feat: use usernames for administrator accounts

Removed online address and some screenshot HTML tags from the README.

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,48 @@
+name: Bug report / Bug 报告
+description: Report something that is not working as expected. / 报告异常或不可用的问题。
+title: "[Bug]: "
+labels: ["bug"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Please write in Chinese or English.
+
+        你可以使用中文或英文填写。
+
+        Please do not include passwords, tokens, API keys, verification codes, session cookies, private keys, real mailbox lists, or unreleased security vulnerability details.
+
+        请不要粘贴密码、Token、API Key、验证码、Session Cookie、私钥、真实邮箱列表，或未公开安全漏洞细节。
+
+  - type: textarea
+    id: details
+    attributes:
+      label: Details / 详情
+      description: What happened? What did you expect instead? / 发生了什么？你原本期望什么？
+      placeholder: "Example / 示例：发送邮件失败，页面提示 500。"
+    validations:
+      required: true
+
+  - type: input
+    id: version
+    attributes:
+      label: Version / 版本
+      description: The LanQin Email version you are using. / 你正在使用的 LanQin Email 版本。
+      placeholder: "v1.2.3"
+    validations:
+      required: true
+
+  - type: textarea
+    id: environment
+    attributes:
+      label: Environment / 环境（可选）
+      description: Add browser, OS, deployment mode, or related config only if helpful. / 如果有帮助，可以补充浏览器、系统、部署方式或相关配置。
+      placeholder: |
+        Browser and OS:
+        Deployment: Docker / local / not sure
+
+  - type: textarea
+    id: logs
+    attributes:
+      label: Logs, screenshots, or steps / 日志、截图或复现步骤（可选）
+      description: Redact secrets and personal data before posting. / 粘贴前请先隐藏敏感信息和个人数据。

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,8 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Security vulnerability / 安全漏洞
+    url: https://github.com/zxyszx/NewSzxcn-Email/security/advisories/new
+    about: Please report security vulnerabilities privately. / 请通过私密渠道报告安全漏洞，不要公开提交漏洞细节。
+  - name: Community chat / 社区交流
+    url: https://t.me/+EhII7MSyi3QwNDQ5
+    about: For informal discussion and quick usage questions. / 适合非正式交流和快速使用问题。

.github/ISSUE_TEMPLATE/deployment_config.yml

@@ -0,0 +1,50 @@
+name: Deployment or configuration / 部署或配置问题
+description: Get help with Docker, domains, DNS, SMTP, IMAP, or runtime configuration. / 获取 Docker、域名、DNS、SMTP、IMAP 或运行配置帮助。
+title: "[Deploy]: "
+labels: ["question"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Please write in Chinese or English.
+
+        你可以使用中文或英文填写。
+
+        Please do not include real passwords, tokens, API keys, private keys, full mail headers with personal data, or production mailbox lists.
+
+        请不要粘贴真实密码、Token、API Key、私钥、包含个人数据的完整邮件头，或生产邮箱列表。
+
+  - type: textarea
+    id: details
+    attributes:
+      label: Details / 详情
+      description: What are you trying to do, and what failed? / 你想完成什么？哪里失败了？
+      placeholder: "Example / 示例：Docker Compose 启动后 Web 可以打开，但 SMTP 587 连接失败。"
+    validations:
+      required: true
+
+  - type: input
+    id: version
+    attributes:
+      label: Version / 版本
+      description: The LanQin Email version you are using. / 你正在使用的 LanQin Email 版本。
+      placeholder: "v1.2.3"
+    validations:
+      required: true
+
+  - type: textarea
+    id: environment
+    attributes:
+      label: Environment and config / 环境与配置（可选）
+      description: Add OS, Docker version, DNS status, or sanitized `.env` lines only if helpful. / 如果有帮助，可以补充系统、Docker 版本、DNS 状态或脱敏后的 `.env` 行。
+      placeholder: |
+        OS:
+        Docker / Compose:
+        Domain or DNS status:
+        Related config, redacted:
+
+  - type: textarea
+    id: logs
+    attributes:
+      label: Logs or screenshots / 日志或截图（可选）
+      description: Redact secrets, mailbox addresses, Message-ID values, and IPs when needed. / 请按需隐藏密钥、邮箱地址、Message-ID 和 IP。

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -0,0 +1,20 @@
+name: Feature request / 功能建议
+description: Suggest an improvement for LanQin Email. / 提出一个改进建议。
+title: "[Feature]: "
+labels: ["enhancement"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Please write in Chinese or English.
+
+        你可以使用中文或英文填写。
+
+  - type: textarea
+    id: details
+    attributes:
+      label: Details / 详情
+      description: What do you want to improve, and why? / 你想改进什么？为什么？
+      placeholder: "Example / 示例：希望管理员可以批量创建邮箱，因为目前一个个添加比较慢。"
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/question.yml

@@ -0,0 +1,31 @@
+name: Question or usage help / 使用问题
+description: Ask a usage question that is not clearly a bug or feature request. / 提交不明显属于 Bug 或功能建议的使用问题。
+title: "[Question]: "
+labels: ["question"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Please write in Chinese or English.
+
+        你可以使用中文或英文填写。
+
+        Please do not include secrets, private mailbox data, or full production logs.
+
+        请不要包含密钥、私人邮箱数据或完整生产日志。
+
+  - type: textarea
+    id: details
+    attributes:
+      label: Details / 详情
+      description: What are you trying to do, and where are you stuck? / 你想完成什么？卡在哪里？
+      placeholder: "Example / 示例：如何给第三方客户端配置 SMTP 和 IMAP？"
+    validations:
+      required: true
+
+  - type: input
+    id: version
+    attributes:
+      label: Version / 版本（可选）
+      description: Add the LanQin Email version if relevant. / 如相关，可以补充 LanQin Email 版本。
+      placeholder: "v1.2.3"

.github/workflows/ai-pr-review.yml

@@ -5,6 +5,14 @@ on:
     branches:
       - main
     types: [opened, synchronize, reopened]
+    paths-ignore:
+      - "**/*.md"
+      - "docs/**"
+      - ".github/ISSUE_TEMPLATE/**"
+      - ".github/release.yml"
+      - ".ai-reviewignore"
+      - "LICENSE"
+      - "deploy/.env.example"
   issue_comment:
     types: [created]
   workflow_dispatch:

.github/workflows/ci.yml

@@ -1,17 +1,28 @@
 name: CI
 
 on:
+  workflow_dispatch:
   push:
     branches:
       - main
     paths-ignore:
       - "**/*.md"
+      - "docs/**"
+      - ".github/ISSUE_TEMPLATE/**"
+      - ".github/release.yml"
+      - ".ai-reviewignore"
+      - "LICENSE"
       - "deploy/.env.example"
   pull_request:
     branches:
       - main
     paths-ignore:
       - "**/*.md"
+      - "docs/**"
+      - ".github/ISSUE_TEMPLATE/**"
+      - ".github/release.yml"
+      - ".ai-reviewignore"
+      - "LICENSE"
       - "deploy/.env.example"
 
 permissions:
@@ -42,7 +53,7 @@ jobs:
           cache-dependency-path: pnpm-lock.yaml
 
       - name: Install web dependencies
-        run: pnpm install --frozen-lockfile --filter lanqin-email-web...
+        run: pnpm install --frozen-lockfile --filter newszxcn-email-web...
 
       - name: Check shadcn/ui usage
         run: pnpm --dir apps/web run check:shadcn

.github/workflows/docker.yml

@@ -1,6 +1,7 @@
 name: Docker Release
 
 on:
+  workflow_dispatch:
   push:
     tags:
       - "v*"
@@ -17,7 +18,6 @@ concurrency:
 
 env:
   REGISTRY: ghcr.io
-  PLATFORMS: linux/amd64
 
 jobs:
   checks:
@@ -35,12 +35,12 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: 24
           cache: pnpm
           cache-dependency-path: pnpm-lock.yaml
 
       - name: Install web dependencies
-        run: pnpm install --frozen-lockfile --filter lanqin-email-web...
+        run: pnpm install --frozen-lockfile --filter newszxcn-email-web...
 
       - name: Check shadcn/ui usage
         run: pnpm --dir apps/web run check:shadcn
@@ -73,10 +73,14 @@ jobs:
         run: |
           tag="${GITHUB_REF_NAME}"
           version="${tag#v}"
+          version="${version#.}"
+          version="${version#-}"
           release_url="https://github.com/${GITHUB_REPOSITORY}/releases/tag/${tag}"
-          echo "tag=${tag}" >> "$GITHUB_OUTPUT"
-          echo "version=${version}" >> "$GITHUB_OUTPUT"
-          echo "release_url=${release_url}" >> "$GITHUB_OUTPUT"
+          {
+            echo "tag=${tag}"
+            echo "version=${version}"
+            echo "release_url=${release_url}"
+          } >> "$GITHUB_OUTPUT"
           echo "::notice::Docker release tag: ${tag}"
 
   docker:
@@ -91,35 +95,42 @@ jobs:
             suffix: ""
             context: .
             file: ./deploy/all-in-one/Dockerfile
+            platforms: linux/amd64,linux/arm64
           - name: api
             suffix: -api
             context: .
             file: ./deploy/api.Dockerfile
+            platforms: linux/amd64,linux/arm64
           - name: web
             suffix: -web
             context: .
             file: ./deploy/web.Dockerfile
+            platforms: linux/amd64,linux/arm64
           - name: postfix
             suffix: -postfix
             context: ./deploy/postfix
             file: ./deploy/postfix/Dockerfile
+            platforms: linux/amd64
           - name: dovecot
             suffix: -dovecot
             context: ./deploy/dovecot
             file: ./deploy/dovecot/Dockerfile
+            platforms: linux/amd64
           - name: rspamd
             suffix: -rspamd
             context: ./deploy/rspamd
             file: ./deploy/rspamd/Dockerfile
+            platforms: linux/amd64
 
     steps:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Setup QEMU
+        uses: docker/setup-qemu-action@v3
+
       - name: Setup Docker Buildx
         uses: docker/setup-buildx-action@v3
-        with:
-          driver: docker
 
       - name: Login to GHCR
         uses: docker/login-action@v3
@@ -133,9 +144,11 @@ jobs:
         shell: bash
         run: |
           image="${REGISTRY}/${GITHUB_REPOSITORY}${{ matrix.suffix }}"
-          echo "name=${image,,}" >> "$GITHUB_OUTPUT"
-          echo "tag=${{ needs.release.outputs.tag }}" >> "$GITHUB_OUTPUT"
-          echo "version=${{ needs.release.outputs.version }}" >> "$GITHUB_OUTPUT"
+          {
+            echo "name=${image,,}"
+            echo "tag=${{ needs.release.outputs.tag }}"
+            echo "version=${{ needs.release.outputs.version }}"
+          } >> "$GITHUB_OUTPUT"
 
       - name: Docker metadata
         id: meta
@@ -148,7 +161,7 @@ jobs:
             type=raw,value=latest
             type=sha,prefix=sha-
           labels: |
-            org.opencontainers.image.title=LanQin Email ${{ matrix.name }}
+            org.opencontainers.image.title=NewSzxcn Email ${{ matrix.name }}
             org.opencontainers.image.version=${{ steps.image.outputs.tag }}
 
       - name: Build and push
@@ -156,9 +169,11 @@ jobs:
         with:
           context: ${{ matrix.context }}
           file: ${{ matrix.file }}
-          platforms: ${{ env.PLATFORMS }}
+          platforms: ${{ matrix.platforms }}
           push: true
           build-args: |
+            APP_VERSION=${{ needs.release.outputs.tag }}
+            APP_COMMIT=${{ github.sha }}
             VITE_APP_VERSION=${{ needs.release.outputs.tag }}
             VITE_RELEASE_URL=${{ needs.release.outputs.release_url }}
           tags: ${{ steps.meta.outputs.tags }}
@@ -195,22 +210,24 @@ jobs:
           fi
 
           if ! gh api -X POST "repos/${repo}/releases/generate-notes" "${generate_args[@]}" --jq '.body' > generated-release-notes.md; then
-            echo "GitHub 自动生成更新日志失败，已回退到提交列表。" > generated-release-notes.md
-            echo >> generated-release-notes.md
-            if [[ -n "${previous_tag}" ]]; then
-              git log --reverse --pretty=format:"- %s ([%h](${repo_url}/commit/%H))" "${previous_tag}..${tag}" >> generated-release-notes.md
-              echo >> generated-release-notes.md
-              echo >> generated-release-notes.md
-              echo "完整更新日志: [${previous_tag}...${tag}](${repo_url}/compare/${previous_tag}...${tag})" >> generated-release-notes.md
-            else
-              echo "- 首个公开版本。" >> generated-release-notes.md
-              echo >> generated-release-notes.md
-              echo "当前提交: [${GITHUB_SHA:0:7}](${repo_url}/commit/${GITHUB_SHA})" >> generated-release-notes.md
-            fi
+            {
+              echo "GitHub 自动生成更新日志失败，已回退到提交列表。"
+              echo
+              if [[ -n "${previous_tag}" ]]; then
+                git log --reverse --pretty=format:"- %s ([%h](${repo_url}/commit/%H))" "${previous_tag}..${tag}"
+                echo
+                echo
+                echo "完整更新日志: [${previous_tag}...${tag}](${repo_url}/compare/${previous_tag}...${tag})"
+              else
+                echo "- 首个公开版本。"
+                echo
+                echo "当前提交: [${GITHUB_SHA:0:7}](${repo_url}/commit/${GITHUB_SHA})"
+              fi
+            } > generated-release-notes.md
           fi
 
           cat > release-notes.md <<EOF
-          # LanQin Email ${tag}
+          # NewSzxcn Email ${tag}
 
           自建邮箱 Webmail 全栈方案，包含 Web、API、Postfix、Dovecot、Rspamd 等组件。
 
@@ -248,7 +265,7 @@ jobs:
         shell: bash
         run: |
           tag="${{ needs.release.outputs.tag }}"
-          title="LanQin Email ${tag}"
+          title="NewSzxcn Email ${tag}"
           if gh release view "${tag}" >/dev/null 2>&1; then
             gh release edit "${tag}" --title "${title}" --notes-file release-notes.md --latest
           else

README.en.md

@@ -0,0 +1,62 @@
+# NewSzxcn Email
+
+NewSzxcn Email is a self-hosted mail server with a complete Webmail client and administration console. It bundles Go, React, Postfix, Dovecot, Rspamd, and SQLite into an all-in-one Docker deployment.
+
+[Releases](https://github.com/zxyszx/NewSzxcn-Email/releases) · [Chinese README](README.md)
+
+## Features
+
+- Webmail with compose, drafts, attachments, search, labels, folders, reminders, import, and export
+- Multiple domains and mailboxes, DKIM, DNS checks, verified forwarding, and external IMAP
+- Incoming mail rules with conditions, ordering, forwarding, moving, and bulk application
+- Administration for users, permission quotas, domains, mailboxes, messages, and send queues
+- SMTP, IMAP, POP3, Postfix, Dovecot, Rspamd, and SMTP Submission
+- Release checks, admin-only web updates, pre-update database backups, and CLI rollback
+
+## One-command install
+
+Debian and Ubuntu on `amd64` or `arm64` are supported.
+
+```bash
+curl -fsSL https://raw.githubusercontent.com/zxyszx/NewSzxcn-Email/main/install.sh | sudo bash
+```
+
+The installer configures `/opt/newszxcn-email`, starts the Docker services, and waits for the health check. DNS records and provider port restrictions must still be configured by the operator.
+
+## Update
+
+System administrators can click the version badge in the admin sidebar to review and install a GitHub release. The updater is only reachable on the internal Docker network.
+
+CLI update and rollback:
+
+```bash
+sudo newszxcn-email update
+sudo newszxcn-email rollback
+```
+
+Useful commands:
+
+```bash
+sudo newszxcn-email status
+sudo newszxcn-email logs
+sudo newszxcn-email uninstall
+```
+
+The uninstall command preserves configuration, messages, and the database under `/opt/newszxcn-email`.
+
+## Required ports
+
+Open TCP ports `25`, `80`, `443`, `465`, `587`, `993`, and `995` as needed. Public delivery also requires correct MX, SPF, DKIM, and DMARC records.
+
+## Manual source deployment
+
+```bash
+git clone https://github.com/zxyszx/NewSzxcn-Email.git
+cd NewSzxcn-Email/deploy
+cp .env.example .env
+docker compose -f docker-compose.yml -f docker-compose.build.yml up -d --build
+```
+
+## License
+
+[MIT](LICENSE)

README.md

@@ -1,206 +1,163 @@
-# LanQin Email
+# NewSzxcn-Email
 
-![Go](https://img.shields.io/badge/Go-1.25+-00ADD8?logo=go)
-![React](https://img.shields.io/badge/React-18.3-61DAFB?logo=react)
-![TypeScript](https://img.shields.io/badge/TypeScript-5.6-3178C6?logo=typescript)
-![SQLite](https://img.shields.io/badge/SQLite-003B57?logo=sqlite)
-![Docker](https://img.shields.io/badge/Docker-2496ED?logo=docker)
-![Postfix](https://img.shields.io/badge/Postfix-5E3C2B?logo=maildotru)
-![Dovecot](https://img.shields.io/badge/Dovecot-4B8BBE)
-![Rspamd](https://img.shields.io/badge/Rspamd-FFD045)
+NewSzxcn-Email 是一个可自建、可管理、带完整 Webmail 与管理后台的开源邮箱系统。
 
-LanQin Email 是一个自建邮箱 Webmail 全栈方案：前端使用 React + TypeScript + shadcn/ui，后端使用 Go + SQLite，部署时可用单容器集成 API、Web、Nginx、Postfix、Dovecot、Rspamd。
+[![Release](https://img.shields.io/github/v/release/zxyszx/NewSzxcn-Email?display_name=tag&sort=semver)](https://github.com/zxyszx/NewSzxcn-Email/releases)
+[![Docker Release](https://github.com/zxyszx/NewSzxcn-Email/actions/workflows/docker.yml/badge.svg)](https://github.com/zxyszx/NewSzxcn-Email/actions/workflows/docker.yml)
+[![CI](https://github.com/zxyszx/NewSzxcn-Email/actions/workflows/ci.yml/badge.svg)](https://github.com/zxyszx/NewSzxcn-Email/actions/workflows/ci.yml)
+[![License](https://img.shields.io/github/license/zxyszx/NewSzxcn-Email)](LICENSE)
 
-## 功能特性
+[版本发布](https://github.com/zxyszx/NewSzxcn-Email/releases) · [部署文档](deploy/README.md) · [English](README.en.md)
 
-- **Webmail 客户端**：多邮箱切换、文件夹、邮件读写、草稿、定时发送、附件、搜索、标签、星标、移动/删除、已读/未读。
-- **邮箱增强**：联系人、签名、收件规则、发件人黑名单、邮件统计、归档已读、清空回收站/垃圾邮件。
-- **多域名/多邮箱**：域名管理、DKIM 密钥生成、DNS 记录展示与检测、邮箱账号、别名转发、无人收件开关。
-- **账号与权限**：登录/注册、会话管理、TOTP 两步验证、Cloudflare Turnstile、用户自助申请邮箱、权限组/RBAC。
-- **管理员面板**：概览清单、用户/权限组/域名/邮箱/别名/全部邮件管理、系统设置、邮件模板、SMTP 测试。
-- **邮件服务栈**：Postfix 投递、Dovecot IMAP/POP3、Rspamd 反垃圾与 DKIM 签名、Maildir 到 SQLite 同步。
-- **部署友好**：默认 all-in-one 单容器，也提供多容器 stack 方便调试 Postfix/Dovecot/Rspamd。
+## 主要功能
 
-## 目录结构
+| 模块 | 能力 |
+| --- | --- |
+| Webmail | 收发邮件、草稿、附件、搜索、星标、标签、自定义文件夹、稍后提醒、导入与导出 |
+| 邮箱管理 | 多邮箱切换、邮箱申请、暂停收信、账号级与邮箱级转发、外部 IMAP |
+| 收信规则 | 多条件匹配、移动、标记、删除、转发、规则排序与应用到已有邮件 |
+| 管理后台 | 账号、权限配额、域名、邮箱、转发、全部邮件、发送队列、系统设置 |
+| 邮件服务 | Postfix、Dovecot、Rspamd、DKIM、IMAP、POP3、SMTP Submission |
+| 安全 | 2FA、Turnstile、权限组、API Token、转发邮箱验证、SSRF 防护 |
+| 运维 | Docker 单镜像部署、在线检查更新、页面一键更新、自动备份、命令行回滚 |
 
-```text
-.
-├── apps/api              # Go API、SQLite schema、邮件同步与业务逻辑
-├── apps/web              # React/Vite Webmail 与管理后台
-├── deploy                # Docker Compose、镜像构建、Postfix/Dovecot/Rspamd 配置
-└── .github/workflows     # Docker 镜像发布流水线
+## 一键安装
+
+支持 Debian / Ubuntu 的 `amd64` 与 `arm64` 服务器。建议至少 2 核、2 GB 内存，并准备一个已解析到服务器的邮件主机名，例如 `mail.example.com`。
+
+```bash
+curl -fsSL https://raw.githubusercontent.com/zxyszx/NewSzxcn-Email/main/install.sh | sudo bash
 ```
 
-## 环境要求
+脚本会自动完成：
 
-### 开发环境
+- 安装或检查 Docker Engine 与 Docker Compose v2
+- 询问邮件域名、访问地址、管理员用户名和密码
+- 创建 `/opt/newszxcn-email` 持久化目录
+- 拉取 GHCR 镜像并启动邮件服务
+- 生成后台在线更新所需的内部鉴权令牌
+- 等待 Web 与 API 健康检查通过
 
-- Go 1.25+
-- Node.js 20+
-- pnpm 10.28.2（可通过 corepack 启用）
+安装完成后访问配置的 `LANQIN_PUBLIC_BASE_URL`。首次登录后，在后台添加邮件域名并按照 DNS 检测页配置记录。
 
-### 部署环境
+> 一键安装不会替你修改 DNS，也不能绕过云厂商对 25 端口的限制。公网收信前必须确认 25 端口可入站，公网发信前需确认 25 端口可出站。
 
-- Docker Engine
-- Docker Compose v2
-- 可解析的邮件域名，以及可用的 25 / 465 / 587 / 993 / 995 等端口
+## 更新与回滚
 
-> 公网收发邮件还需要正确配置 MX、SPF、DKIM、DMARC，并确认云厂商未封禁 SMTP 端口。
+### 后台页面更新
 
-## 快速开始
+超级管理员可点击后台侧栏中的版本号，查看当前版本、最新版本与更新日志。点击“立即更新”后，系统会先在线备份 SQLite 数据库，再拉取新镜像并重启；页面会等待服务恢复后自动刷新。
 
-### 本地开发
+更新服务只在 Docker 内部网络开放，不映射公网端口。普通用户和普通后台权限组无法执行系统更新。
 
-后端：
+### 命令行更新
+
+```bash
+sudo newszxcn-email update
+```
+
+命令行更新会保留当前镜像、备份数据库并执行健康检查。需要回滚时运行：
+
+```bash
+sudo newszxcn-email rollback
+```
+
+常用运维命令：
+
+```bash
+sudo newszxcn-email status
+sudo newszxcn-email logs
+sudo newszxcn-email uninstall
+```
+
+`uninstall` 只移除容器，不删除 `/opt/newszxcn-email` 中的配置、数据库与邮件。
+
+## DNS 与端口
+
+至少需要以下 DNS 记录：
+
+| 类型 | 示例 | 用途 |
+| --- | --- | --- |
+| A / AAAA | `mail.example.com -> 服务器 IP` | 邮件主机与 Webmail |
+| MX | `example.com -> mail.example.com` | 接收邮件 |
+| SPF TXT | 后台生成 | 声明允许发信的服务器 |
+| DKIM TXT | 后台按域名生成 | 邮件签名验证 |
+| DMARC TXT | 后台生成建议值 | 发信策略与报告 |
+
+服务器防火墙和云安全组应按需开放：
+
+| 端口 | 协议 | 用途 |
+| --- | --- | --- |
+| 25 | TCP | SMTP 服务器间收发信 |
+| 80 / 443 | TCP | Webmail 与证书签发 |
+| 465 / 587 | TCP | 邮件客户端 SMTP 发信 |
+| 993 | TCP | IMAP SSL |
+| 995 | TCP | POP3 SSL |
+
+## 数据目录
+
+默认部署目录为 `/opt/newszxcn-email`：
+
+```text
+/opt/newszxcn-email/
+|-- .env                 # 环境配置与内部更新令牌
+|-- docker-compose.yml   # 邮箱主服务与内部更新服务
+|-- data/                # SQLite、附件和更新前备份
+|-- mail/                # Maildir 邮件原文
+`-- dkim/                # DKIM 私钥
+```
+
+升级和重建容器不会删除这些目录。备份时应同时保存 `data`、`mail`、`dkim` 与 `.env`。
+
+## 手动部署
+
+需要自行控制 Compose 配置时：
+
+```bash
+git clone https://github.com/zxyszx/NewSzxcn-Email.git
+cd NewSzxcn-Email/deploy
+cp .env.example .env
+# 编辑 .env
+docker compose pull
+docker compose up -d
+```
+
+本地源码构建：
+
+```bash
+cd deploy
+docker compose -f docker-compose.yml -f docker-compose.build.yml up -d --build
+```
+
+更完整的证书、外部 SMTP、Webhook 和排错说明见 [deploy/README.md](deploy/README.md)。
+
+## 技术栈
+
+- 后端：Go、Chi、SQLite
+- 前端：React、TypeScript、TanStack Query、shadcn/ui、Tailwind CSS
+- 邮件：Postfix、Dovecot、Rspamd
+- 部署：Docker、Docker Compose、GitHub Actions、GHCR
+
+## 本地开发
 
 ```bash
 cd apps/api
-go mod download
-go test ./...
 go run ./cmd/server
 ```
 
-前端（新终端）：
-
 ```bash
 cd apps/web
-corepack enable
-corepack prepare pnpm@10.28.2 --activate
 pnpm install
 pnpm run dev
 ```
 
-访问：
-
-- Web：`http://localhost:5173`
-- API：`http://localhost:8080`
-
-默认管理员邮箱为 `admin@lanqin.local`。建议开发时显式设置 `LANQIN_ADMIN_PASSWORD`；如果未设置，后端首次启动会随机生成密码并输出到日志。
-
-### Docker 部署（单容器）
-
-服务器只需要 `deploy/` 下的 Compose 文件和配置，不需要源码构建：
+提交前建议运行：
 
 ```bash
-cd deploy
-cp .env.example .env
-# 修改 .env：域名、访问地址、管理员邮箱、管理员密码等
-docker compose pull
-docker compose up -d
+cd apps/api && go test ./...
+cd apps/web && pnpm run check
 ```
 
-常用命令：
+## 开源协议
 
-```bash
-# 查看日志
-docker compose logs -f lanqin-email
-
-# 更新镜像并重启
-docker compose pull
-docker compose up -d
-
-# 停止服务
-docker compose down
-```
-
-如需在完整源码仓库中本地构建镜像：
-
-```bash
-cd deploy
-cp .env.example .env
-docker compose -f docker-compose.yml -f docker-compose.build.yml up -d --build
-```
-
-更多部署细节见 [`deploy/README.md`](./deploy/README.md)。
-
-## 首次部署清单
-
-1. 编辑 `deploy/.env`：至少修改 `LANQIN_PUBLIC_HOSTNAME`、`LANQIN_PUBLIC_BASE_URL`、`LANQIN_ADMIN_EMAIL`、`LANQIN_ADMIN_PASSWORD`。
-2. 生产环境建议挂载真实 TLS 证书，并设置 `LANQIN_TLS_CERT_FILE` / `LANQIN_TLS_KEY_FILE`。
-3. 登录管理后台，添加邮件域名。
-4. 在域名管理中复制并配置 MX、SPF、DKIM、DMARC 记录，然后点击 DNS 检测。
-5. 创建邮箱账号、别名转发或权限组，按需开启注册、2FA、Turnstile、自助申请邮箱。
-6. 使用后台 SMTP 测试与 Webmail 收发测试确认链路正常。
-
-## 关键环境变量
-
-完整配置见 [`deploy/.env.example`](./deploy/.env.example)。常用变量如下：
-
-| 变量 | 说明 | 默认/示例 |
-|------|------|-----------|
-| `LANQIN_IMAGE` | all-in-one 镜像 | `ghcr.io/lanqin996/lanqin-email:latest` |
-| `LANQIN_PUBLIC_HOSTNAME` | 邮件服务器主机名，影响 Postfix/DNS 展示/链接 | `mail.example.com` |
-| `LANQIN_PUBLIC_BASE_URL` | Webmail 对外访问地址 | `https://mail.example.com` |
-| `LANQIN_ADMIN_EMAIL` | 初始管理员邮箱 | `admin@example.com` |
-| `LANQIN_ADMIN_PASSWORD` | 初始管理员密码，生产必须修改 | `ChangeMe123!` |
-| `LANQIN_DB_PATH` | SQLite 数据库路径 | `/data/lanqin.db` |
-| `LANQIN_ALLOW_INSECURE_HTTP` | 是否允许非 HTTPS Cookie，本地调试可开 | `false` |
-| `LANQIN_OPEN_REGISTRATION` | 是否开放注册 | `false` |
-| `LANQIN_TWO_FACTOR_ENABLED` | 2FA 功能总开关 | `false` |
-| `LANQIN_TURNSTILE_ENABLED` | 是否启用 Turnstile | `false` |
-| `LANQIN_SMTP_HOST` / `LANQIN_SMTP_PORT` | Webmail 发信 SMTP | `127.0.0.1` / `25` |
-| `LANQIN_MAILDIR_ROOT` | Maildir 根目录 | `/var/mail/vhosts` |
-| `LANQIN_CATCH_ALL_ENABLED` | 未注册收件地址是否进入全部邮件 | `false` |
-| `LANQIN_USER_MAILBOX_APPLY_ENABLED` | 是否允许用户自助申请邮箱 | `false` |
-
-## 架构
-
-```text
-┌────────────────────────────────────────────────────────────┐
-│                    lanqin-email 单容器                     │
-│                                                            │
-│  ┌─────────┐       ┌────────────┐       ┌──────────────┐   │
-│  │  Nginx  │ ───▶  │ Go API     │ ───▶  │ SQLite /data │   │
-│  │ Web 静态│       │ Webmail API│       └──────┬───────┘   │
-│  └─────────┘       └─────┬──────┘              │           │
-│                          │ Maildir sync        │ maps      │
-│  ┌─────────┐       ┌─────▼──────┐       ┌──────▼───────┐   │
-│  │ Rspamd  │ ◀───▶ │ Postfix    │ ───▶  │ Dovecot/LMTP │   │
-│  │ DKIM/AS │       │ SMTP/MTA   │       │ IMAP/POP3    │   │
-│  └─────────┘       └────────────┘       └──────────────┘   │
-└────────────────────────────────────────────────────────────┘
-```
-
-邮件流转：
-
-1. **收件**：Postfix 接收邮件 → Rspamd 评分/标记 → Dovecot 写入 Maildir → API worker 同步到 SQLite → Webmail 展示。
-2. **发件**：Webmail 调用 API → API 构造 MIME → SMTP 提交给 Postfix 或外部 SMTP → 投递到目标地址。
-3. **本地投递**：开发环境中，系统内邮箱互发可直接写入对方 Inbox；未配置 `LANQIN_SMTP_HOST` 时不会真正投递外部收件人。
-4. **第三方客户端**：可通过 SMTP 465/587、IMAP 993、POP3 995 连接；生产环境请配置匹配 `LANQIN_PUBLIC_HOSTNAME` 的证书。
-
-## 开发与验证
-
-```bash
-# API 测试
-cd apps/api
-go test ./...
-
-# Web 检查与构建
-cd apps/web
-pnpm run check
-
-# 单容器源码构建验证
-cd deploy
-docker compose -f docker-compose.yml -f docker-compose.build.yml up -d --build
-```
-
-## 生产注意事项
-
-- 生产环境必须修改默认管理员密码，并妥善保管 `.env`、SQLite 数据库、Maildir 与 DKIM 私钥。
-- Web 可放在宿主机 Nginx/宝塔/边缘网关后，但 SMTP/IMAP/POP3 证书需要单独挂载给容器内 Postfix/Dovecot。
-- 云厂商常默认封禁 25 端口；无法收发公网邮件时先检查端口、安全组、防火墙与反向 DNS。
-- SQLite 适合单机部署；多节点部署前需要迁移数据库，并同步调整 Postfix/Dovecot 查询配置。
-
-## SMTP 提交
-
-- 第三方客户端的 SMTP 提交 `465/587` 由 LanQin API 进程处理。
-- 启用 SMTP 提交前必须配置 `LANQIN_TLS_CERT_FILE` / `LANQIN_TLS_KEY_FILE`；API 不会用 localhost 自签证书对外提供 465/587。
-- Postfix 只保留 `25` 端口，用于公网入站邮件和内部/外部 relay。
-- Webmail/API 和第三方客户端发信都会先写入 Sent，再进入发送队列。
-- 发送队列由 LanQin API 后台 worker relay 到 `LANQIN_SMTP_HOST:LANQIN_SMTP_PORT`，失败会记录审计并按退避策略重试。
-- v1 支持本人邮箱发信；如需 send-as，可使用启用的别名转发 source 指向本人邮箱，或在数据库中配置 `send_as_grants`。
-- 如果客户端随后又通过 IMAP APPEND 写入自己的 Sent 副本，Maildir 同步会按 Sent 文件夹内的 `Message-ID` 去重。
-
-## License
-
-[MIT](./LICENSE)
+[MIT](LICENSE)

README.zh-CN.md

@@ -0,0 +1,158 @@
+# NewSzxcn-Email
+
+NewSzxcn-Email 是一个可自建、可管理、带完整 Webmail 与管理后台的开源邮箱系统。
+
+[版本发布](https://github.com/zxyszx/NewSzxcn-Email/releases) · [部署文档](deploy/README.md) · [English](README.en.md)
+
+## 主要功能
+
+| 模块 | 能力 |
+| --- | --- |
+| Webmail | 收发邮件、草稿、附件、搜索、星标、标签、自定义文件夹、稍后提醒、导入与导出 |
+| 邮箱管理 | 多邮箱切换、邮箱申请、暂停收信、账号级与邮箱级转发、外部 IMAP |
+| 收信规则 | 多条件匹配、移动、标记、删除、转发、规则排序与应用到已有邮件 |
+| 管理后台 | 账号、权限配额、域名、邮箱、转发、全部邮件、发送队列、系统设置 |
+| 邮件服务 | Postfix、Dovecot、Rspamd、DKIM、IMAP、POP3、SMTP Submission |
+| 安全 | 2FA、Turnstile、权限组、API Token、转发邮箱验证、SSRF 防护 |
+| 运维 | Docker 单镜像部署、在线检查更新、页面一键更新、自动备份、命令行回滚 |
+
+## 一键安装
+
+支持 Debian / Ubuntu 的 `amd64` 与 `arm64` 服务器。建议至少 2 核、2 GB 内存，并准备一个已解析到服务器的邮件主机名，例如 `mail.example.com`。
+
+```bash
+curl -fsSL https://raw.githubusercontent.com/zxyszx/NewSzxcn-Email/main/install.sh | sudo bash
+```
+
+脚本会自动完成：
+
+- 安装或检查 Docker Engine 与 Docker Compose v2
+- 询问邮件域名、访问地址、管理员邮箱和密码
+- 创建 `/opt/newszxcn-email` 持久化目录
+- 拉取 GHCR 镜像并启动邮件服务
+- 生成后台在线更新所需的内部鉴权令牌
+- 等待 Web 与 API 健康检查通过
+
+安装完成后访问配置的 `LANQIN_PUBLIC_BASE_URL`。首次登录后，在后台添加邮件域名并按照 DNS 检测页配置记录。
+
+> 一键安装不会替你修改 DNS，也不能绕过云厂商对 25 端口的限制。公网收信前必须确认 25 端口可入站，公网发信前需确认 25 端口可出站。
+
+## 更新与回滚
+
+### 后台页面更新
+
+超级管理员可点击后台侧栏中的版本号，查看当前版本、最新版本与更新日志。点击“立即更新”后，系统会先在线备份 SQLite 数据库，再拉取新镜像并重启；页面会等待服务恢复后自动刷新。
+
+更新服务只在 Docker 内部网络开放，不映射公网端口。普通用户和普通后台权限组无法执行系统更新。
+
+### 命令行更新
+
+```bash
+sudo newszxcn-email update
+```
+
+命令行更新会保留当前镜像、备份数据库并执行健康检查。需要回滚时运行：
+
+```bash
+sudo newszxcn-email rollback
+```
+
+常用运维命令：
+
+```bash
+sudo newszxcn-email status
+sudo newszxcn-email logs
+sudo newszxcn-email uninstall
+```
+
+`uninstall` 只移除容器，不删除 `/opt/newszxcn-email` 中的配置、数据库与邮件。
+
+## DNS 与端口
+
+至少需要以下 DNS 记录：
+
+| 类型 | 示例 | 用途 |
+| --- | --- | --- |
+| A / AAAA | `mail.example.com -> 服务器 IP` | 邮件主机与 Webmail |
+| MX | `example.com -> mail.example.com` | 接收邮件 |
+| SPF TXT | 后台生成 | 声明允许发信的服务器 |
+| DKIM TXT | 后台按域名生成 | 邮件签名验证 |
+| DMARC TXT | 后台生成建议值 | 发信策略与报告 |
+
+服务器防火墙和云安全组应按需开放：
+
+| 端口 | 协议 | 用途 |
+| --- | --- | --- |
+| 25 | TCP | SMTP 服务器间收发信 |
+| 80 / 443 | TCP | Webmail 与证书签发 |
+| 465 / 587 | TCP | 邮件客户端 SMTP 发信 |
+| 993 | TCP | IMAP SSL |
+| 995 | TCP | POP3 SSL |
+
+## 数据目录
+
+默认部署目录为 `/opt/newszxcn-email`：
+
+```text
+/opt/newszxcn-email/
+├── .env                 # 环境配置与内部更新令牌
+├── docker-compose.yml   # 邮箱主服务与内部更新服务
+├── data/                # SQLite、附件和更新前备份
+├── mail/                # Maildir 邮件原文
+└── dkim/                # DKIM 私钥
+```
+
+升级和重建容器不会删除这些目录。备份时应同时保存 `data`、`mail`、`dkim` 与 `.env`。
+
+## 手动部署
+
+需要自行控制 Compose 配置时：
+
+```bash
+git clone https://github.com/zxyszx/NewSzxcn-Email.git
+cd NewSzxcn-Email/deploy
+cp .env.example .env
+# 编辑 .env
+docker compose pull
+docker compose up -d
+```
+
+本地源码构建：
+
+```bash
+cd deploy
+docker compose -f docker-compose.yml -f docker-compose.build.yml up -d --build
+```
+
+更完整的证书、外部 SMTP、Webhook 和排错说明见 [deploy/README.md](deploy/README.md)。
+
+## 技术栈
+
+- 后端：Go、Chi、SQLite
+- 前端：React、TypeScript、TanStack Query、shadcn/ui、Tailwind CSS
+- 邮件：Postfix、Dovecot、Rspamd
+- 部署：Docker、Docker Compose、GitHub Actions、GHCR
+
+## 本地开发
+
+```bash
+cd apps/api
+go run ./cmd/server
+```
+
+```bash
+cd apps/web
+pnpm install
+pnpm run dev
+```
+
+提交前建议运行：
+
+```bash
+cd apps/api && go test ./...
+cd apps/web && pnpm run build
+```
+
+## 开源协议
+
+[MIT](LICENSE)

VERSION

@@ -0,0 +1 @@
+1.2.1

apps/api/go.mod

@@ -13,6 +13,8 @@ require (
 require (
 	github.com/aymerick/douceur v0.2.0 // indirect
 	github.com/dustin/go-humanize v1.0.1 // indirect
+	github.com/emersion/go-imap/v2 v2.0.0-beta.8 // indirect
+	github.com/emersion/go-message v0.18.2 // indirect
 	github.com/emersion/go-sasl v0.0.0-20241020182733-b788ff22d5a6 // indirect
 	github.com/emersion/go-smtp v0.24.0 // indirect
 	github.com/google/uuid v1.6.0 // indirect
@@ -22,6 +24,7 @@ require (
 	github.com/ncruces/go-strftime v0.1.9 // indirect
 	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
 	golang.org/x/net v0.26.0 // indirect
+	golang.org/x/oauth2 v0.36.0 // indirect
 	golang.org/x/sys v0.23.0 // indirect
 	modernc.org/gc/v3 v3.0.0-20240107210532-573471604cb6 // indirect
 	modernc.org/libc v1.55.3 // indirect

apps/api/go.sum

@@ -2,6 +2,10 @@ github.com/aymerick/douceur v0.2.0 h1:Mv+mAeH1Q+n9Fr+oyamOlAkUNPWPlA8PPGR0QAaYuP
 github.com/aymerick/douceur v0.2.0/go.mod h1:wlT5vV2O3h55X9m7iVYN0TBM0NH/MmbLnd30/FjWUq4=
 github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
 github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
+github.com/emersion/go-imap/v2 v2.0.0-beta.8 h1:5IXZK1E33DyeP526320J3RS7eFlCYGFgtbrfapqDPug=
+github.com/emersion/go-imap/v2 v2.0.0-beta.8/go.mod h1:dhoFe2Q0PwLrMD7oZw8ODuaD0vLYPe5uj2wcOMnvh48=
+github.com/emersion/go-message v0.18.2 h1:rl55SQdjd9oJcIoQNhubD2Acs1E6IzlZISRTK7x/Lpg=
+github.com/emersion/go-message v0.18.2/go.mod h1:XpJyL70LwRvq2a8rVbHXikPgKj8+aI0kGdHlg16ibYA=
 github.com/emersion/go-sasl v0.0.0-20241020182733-b788ff22d5a6 h1:oP4q0fw+fOSWn3DfFi4EXdT+B+gTtzx8GC9xsc26Znk=
 github.com/emersion/go-sasl v0.0.0-20241020182733-b788ff22d5a6/go.mod h1:iL2twTeMvZnrg54ZoPDNfJaJaqy0xIQFuBdrLsmspwQ=
 github.com/emersion/go-smtp v0.24.0 h1:g6AfoF140mvW0vLNPD/LuCBLEAdlxOjIXqbIkJIS6Wk=
@@ -26,21 +30,54 @@ github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZb
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
 github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/crypto v0.26.0 h1:RrRspgV4mU+YwB4FYnuBoKsUapNIL5cohGAmSH3azsw=
 golang.org/x/crypto v0.26.0/go.mod h1:GY7jblb9wI+FOo5y8/S2oY4zWP07AkOJ4+jxCqdqn54=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/mod v0.36.0 h1:JJjpVx6myfUsUdAzZuOSTTmRE0PfZeNWzzvKrP7amb4=
 golang.org/x/mod v0.36.0/go.mod h1:moc6ELqsWcOw5Ef3xVprK5ul/MvtVvkIXLziUOICjUQ=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
 golang.org/x/net v0.26.0 h1:soB7SVo0PWrY4vPW/+ay0jKDNScG2X9wFeYlXIvJsOQ=
 golang.org/x/net v0.26.0/go.mod h1:5YKkiSynbBIh3p6iOc/vibscux0x38BZDkn8sCUPxHE=
+golang.org/x/oauth2 v0.36.0 h1:peZ/1z27fi9hUOFCAZaHyrpWG5lwe0RJEEEeH0ThlIs=
+golang.org/x/oauth2 v0.36.0/go.mod h1:YDBUJMTkDnJS+A4BP4eZBjCqtokkg1hODuPjwiGPO7Q=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.21.0 h1:HLII4xRRTtCRkxYp4HNFF0Js/Og6q2i++KXbg0gHCwM=
 golang.org/x/sync v0.21.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.23.0 h1:YfKFowiIMvtgl1UERQoTPPToxltDeZfbj4H7dVUCwmM=
 golang.org/x/sys v0.23.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
+golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
 golang.org/x/text v0.38.0 h1:sXmwo9DwP3OK9EZ7PqAdaooSGozfl/3a6/xJcbzPRhE=
 golang.org/x/text v0.38.0/go.mod h1:YXZt3QhHUKYT53r2lLKFIVi6Ao1jdzrTR/KQ09qyxF4=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
 golang.org/x/tools v0.45.0 h1:18qN3FAooORvApf5XjCXgsuayZOEtXf6JK18I3+ONa8=
 golang.org/x/tools v0.45.0/go.mod h1:LuUGqqaXcXMEFEruIVJVm5mgDD8vww/z/SR1gQ4uE/0=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 modernc.org/cc/v4 v4.21.4 h1:3Be/Rdo1fpr8GrQ7IVw9OHtplU4gWbb+wNgeoBMmGLQ=
 modernc.org/cc/v4 v4.21.4/go.mod h1:HM7VJTZbUCR3rV8EYBi9wxnJ0ZBRiGE5OeGXNA0IsLQ=
 modernc.org/ccgo/v4 v4.19.2 h1:lwQZgvboKD0jBwdaeVCTouxhxAyN6iawF3STraAal8Y=

apps/api/internal/app/admin_handlers.go

@@ -49,9 +49,9 @@ func (a *App) handleAdminOverview(w http.ResponseWriter, r *http.Request) {
 }
 
 func (a *App) handleListUsers(w http.ResponseWriter, r *http.Request) {
-	rows, err := a.db.QueryContext(r.Context(), `SELECT u.id,u.email,u.display_name,u.role,u.disabled,u.two_factor_enabled,u.created_at,COUNT(mb.id),COALESCE(GROUP_CONCAT(mb.address), '')
+	rows, err := a.db.QueryContext(r.Context(), `SELECT u.id,u.login_name,u.email,u.display_name,u.role,u.disabled,u.two_factor_enabled,u.mailbox_limit_override,u.created_at,COUNT(mb.id),COALESCE(GROUP_CONCAT(mb.address), '')
 		FROM users u LEFT JOIN mailboxes mb ON mb.user_id=u.id
-		GROUP BY u.id,u.email,u.display_name,u.role,u.disabled,u.two_factor_enabled,u.created_at
+		GROUP BY u.id,u.login_name,u.email,u.display_name,u.role,u.disabled,u.two_factor_enabled,u.mailbox_limit_override,u.created_at
 		ORDER BY u.created_at DESC`)
 	if err != nil {
 		respondError(w, http.StatusInternalServerError, "failed to list users")
@@ -62,13 +62,15 @@ func (a *App) handleListUsers(w http.ResponseWriter, r *http.Request) {
 	for rows.Next() {
 		var item AdminUser
 		var disabled, twoFactorEnabled int
+		var mailboxLimitOverride sql.NullInt64
 		var created, mailboxCSV string
-		if err := rows.Scan(&item.ID, &item.Email, &item.DisplayName, &item.Role, &disabled, &twoFactorEnabled, &created, &item.MailboxCount, &mailboxCSV); err != nil {
+		if err := rows.Scan(&item.ID, &item.LoginName, &item.Email, &item.DisplayName, &item.Role, &disabled, &twoFactorEnabled, &mailboxLimitOverride, &created, &item.MailboxCount, &mailboxCSV); err != nil {
 			respondError(w, http.StatusInternalServerError, "failed to scan users")
 			return
 		}
 		item.Disabled = intBool(disabled)
 		item.TwoFactorEnabled = intBool(twoFactorEnabled)
+		item.MailboxLimitOverride = intPtrFromNull(mailboxLimitOverride)
 		item.CreatedAt = parseTime(created)
 		item.Mailboxes = splitCSV(mailboxCSV)
 		items = append(items, item)
@@ -92,26 +94,34 @@ func (a *App) handleListUsers(w http.ResponseWriter, r *http.Request) {
 
 func (a *App) handleCreateUser(w http.ResponseWriter, r *http.Request) {
 	var req struct {
-		Email              string   `json:"email"`
-		DisplayName        string   `json:"displayName"`
-		Role               string   `json:"role"`
-		Password           string   `json:"password"`
-		Disabled           bool     `json:"disabled"`
-		PermissionGroupIDs []string `json:"permissionGroupIds"`
+		LoginName            string   `json:"loginName"`
+		Email                string   `json:"email"`
+		DisplayName          string   `json:"displayName"`
+		Role                 string   `json:"role"`
+		Password             string   `json:"password"`
+		Disabled             bool     `json:"disabled"`
+		MailboxLimitOverride *int     `json:"mailboxLimitOverride"`
+		PermissionGroupIDs   []string `json:"permissionGroupIds"`
 	}
 	if err := decodeJSON(r, &req); err != nil {
 		badRequest(w, err)
 		return
 	}
 	actor := currentUser(r)
-	email := normalizeEmail(req.Email)
-	if email == "" || !strings.Contains(email, "@") {
-		badRequest(w, errors.New("invalid email"))
+	var loginName string
+	var err error
+	if strings.TrimSpace(req.LoginName) != "" {
+		loginName, err = cleanUsername(req.LoginName)
+	} else {
+		loginName, err = cleanLoginName(req.Email)
+	}
+	if err != nil {
+		badRequest(w, err)
 		return
 	}
 	displayName := strings.TrimSpace(req.DisplayName)
 	if displayName == "" {
-		displayName = email
+		displayName = loginName
 	}
 	role := strings.TrimSpace(req.Role)
 	if role == "" {
@@ -125,6 +135,14 @@ func (a *App) handleCreateUser(w http.ResponseWriter, r *http.Request) {
 		respondError(w, http.StatusForbidden, "only administrators can create administrator users")
 		return
 	}
+	mailboxLimitOverride, err := normalizeMailboxLimitOverride(req.MailboxLimitOverride)
+	if err != nil {
+		badRequest(w, err)
+		return
+	}
+	if role == "admin" {
+		mailboxLimitOverride = nil
+	}
 	if len(req.Password) < 8 {
 		badRequest(w, errors.New("password must be at least 8 characters"))
 		return
@@ -142,8 +160,8 @@ func (a *App) handleCreateUser(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	defer tx.Rollback()
-	if _, err = tx.ExecContext(r.Context(), `INSERT INTO users(id,email,display_name,role,password_hash,disabled,created_at,updated_at)
-		VALUES(?,?,?,?,?,?,?,?)`, id, email, displayName, role, string(passwordHash), boolInt(req.Disabled), now, now); err != nil {
+	if _, err = tx.ExecContext(r.Context(), `INSERT INTO users(id,login_name,email,display_name,role,password_hash,disabled,mailbox_limit_override,created_at,updated_at)
+		VALUES(?,?,?,?,?,?,?,?,?,?)`, id, loginName, loginName, displayName, role, string(passwordHash), boolInt(req.Disabled), nullableInt(mailboxLimitOverride), now, now); err != nil {
 		badRequest(w, err)
 		return
 	}
@@ -171,10 +189,12 @@ func (a *App) handleUpdateUser(w http.ResponseWriter, r *http.Request) {
 	id := chi.URLParam(r, "id")
 	current := currentUser(r)
 	var req struct {
-		DisplayName        string    `json:"displayName"`
-		Role               string    `json:"role"`
-		Disabled           *bool     `json:"disabled"`
-		PermissionGroupIDs *[]string `json:"permissionGroupIds"`
+		LoginName            string    `json:"loginName"`
+		DisplayName          string    `json:"displayName"`
+		Role                 string    `json:"role"`
+		Disabled             *bool     `json:"disabled"`
+		MailboxLimitOverride *int      `json:"mailboxLimitOverride"`
+		PermissionGroupIDs   *[]string `json:"permissionGroupIds"`
 	}
 	if err := decodeJSON(r, &req); err != nil {
 		badRequest(w, err)
@@ -198,6 +218,15 @@ func (a *App) handleUpdateUser(w http.ResponseWriter, r *http.Request) {
 		respondError(w, http.StatusNotFound, "user not found")
 		return
 	}
+	requestedLoginName := strings.TrimSpace(req.LoginName)
+	loginName := existing.LoginName
+	if requestedLoginName != "" {
+		loginName, err = cleanUsername(requestedLoginName)
+		if err != nil {
+			badRequest(w, err)
+			return
+		}
+	}
 	if current == nil || (current.Role != "admin" && (existing.Role == "admin" || role == "admin")) {
 		respondError(w, http.StatusForbidden, "only administrators can modify administrator users")
 		return
@@ -210,6 +239,17 @@ func (a *App) handleUpdateUser(w http.ResponseWriter, r *http.Request) {
 		badRequest(w, errors.New("default administrator must remain an active super administrator"))
 		return
 	}
+	mailboxLimitOverride := existing.MailboxLimitOverride
+	if req.MailboxLimitOverride != nil {
+		mailboxLimitOverride, err = normalizeMailboxLimitOverride(req.MailboxLimitOverride)
+		if err != nil {
+			badRequest(w, err)
+			return
+		}
+	}
+	if role == "admin" {
+		mailboxLimitOverride = nil
+	}
 	if err := a.ensureAdminRemains(r.Context(), id, role, disabled); err != nil {
 		badRequest(w, err)
 		return
@@ -254,8 +294,16 @@ func (a *App) handleUpdateUser(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	defer tx.Rollback()
-	if _, err := tx.ExecContext(r.Context(), `UPDATE users SET display_name=?, role=?, disabled=?, updated_at=? WHERE id=?`,
-		displayName, role, boolInt(disabled), a.now().UTC().Format(time.RFC3339Nano), id); err != nil {
+	emailIdentity := existing.Email
+	if normalizeLoginName(existing.Email) == normalizeLoginName(existing.LoginName) {
+		emailIdentity = loginName
+	}
+	if _, err := tx.ExecContext(r.Context(), `UPDATE users SET login_name=?, email=?, display_name=?, role=?, disabled=?, mailbox_limit_override=?, updated_at=? WHERE id=?`,
+		loginName, emailIdentity, displayName, role, boolInt(disabled), nullableInt(mailboxLimitOverride), a.now().UTC().Format(time.RFC3339Nano), id); err != nil {
+		if strings.Contains(strings.ToLower(err.Error()), "unique") {
+			badRequest(w, errors.New("登录名已被使用"))
+			return
+		}
 		respondError(w, http.StatusInternalServerError, "failed to update user")
 		return
 	}
@@ -492,14 +540,15 @@ func (a *App) handleListMailboxes(w http.ResponseWriter, r *http.Request) {
 
 func (a *App) handleCreateMailbox(w http.ResponseWriter, r *http.Request) {
 	var req struct {
-		DomainID    string `json:"domainId"`
-		LocalPart   string `json:"localPart"`
-		DisplayName string `json:"displayName"`
-		Password    string `json:"password"`
-		QuotaMB     int    `json:"quotaMb"`
-		Role        string `json:"role"`
-		OwnerEmail  string `json:"ownerEmail"`
-		UserID      string `json:"userId"`
+		DomainID       string `json:"domainId"`
+		LocalPart      string `json:"localPart"`
+		DisplayName    string `json:"displayName"`
+		Password       string `json:"password"`
+		QuotaMB        int    `json:"quotaMb"`
+		Role           string `json:"role"`
+		OwnerLoginName string `json:"ownerLoginName"`
+		OwnerEmail     string `json:"ownerEmail"`
+		UserID         string `json:"userId"`
 	}
 	if err := decodeJSON(r, &req); err != nil {
 		badRequest(w, err)
@@ -568,15 +617,12 @@ func (a *App) handleCreateMailbox(w http.ResponseWriter, r *http.Request) {
 			return
 		}
 	} else {
-		ownerEmail := normalizeEmail(req.OwnerEmail)
-		if ownerEmail == "" {
-			ownerEmail = address
-		}
-		if !strings.Contains(ownerEmail, "@") {
-			badRequest(w, errors.New("invalid owner email"))
+		ownerLoginName, err := cleanLoginName(req.OwnerLoginName, req.OwnerEmail, address)
+		if err != nil {
+			badRequest(w, err)
 			return
 		}
-		err = tx.QueryRowContext(r.Context(), `SELECT id FROM users WHERE email=? AND disabled=0`, ownerEmail).Scan(&userID)
+		err = tx.QueryRowContext(r.Context(), `SELECT id FROM users WHERE (login_name=? OR email=?) AND disabled=0`, ownerLoginName, ownerLoginName).Scan(&userID)
 		if errors.Is(err, sql.ErrNoRows) {
 			passwordHash, err := bcrypt.GenerateFromPassword([]byte(req.Password), bcrypt.DefaultCost)
 			if err != nil {
@@ -585,11 +631,11 @@ func (a *App) handleCreateMailbox(w http.ResponseWriter, r *http.Request) {
 			}
 			userID = newID("usr")
 			ownerDisplayName := displayName
-			if !strings.EqualFold(ownerEmail, address) {
-				ownerDisplayName = ownerEmail
+			if !strings.EqualFold(ownerLoginName, address) {
+				ownerDisplayName = ownerLoginName
 			}
-			_, err = tx.ExecContext(r.Context(), `INSERT INTO users(id,email,display_name,role,password_hash,disabled,created_at,updated_at)
-				VALUES(?,?,?,?,?,?,?,?)`, userID, ownerEmail, ownerDisplayName, role, string(passwordHash), 0, now, now)
+			_, err = tx.ExecContext(r.Context(), `INSERT INTO users(id,login_name,email,display_name,role,password_hash,disabled,created_at,updated_at)
+				VALUES(?,?,?,?,?,?,?,?,?)`, userID, ownerLoginName, ownerLoginName, ownerDisplayName, role, string(passwordHash), 0, now, now)
 			if err != nil {
 				badRequest(w, err)
 				return
@@ -715,7 +761,7 @@ func (a *App) handleDeleteMailbox(w http.ResponseWriter, r *http.Request) {
 	}
 	rows.Close()
 	for _, messageID := range messageIDs {
-		a.deleteMessageFiles(r.Context(), messageID)
+		a.deleteMessage(r.Context(), messageID)
 	}
 	res, err := a.db.ExecContext(r.Context(), `DELETE FROM mailboxes WHERE id=?`, id)
 	if err != nil {
@@ -757,6 +803,13 @@ func (a *App) handleAdminMessages(w http.ResponseWriter, r *http.Request) {
 	q := strings.TrimSpace(r.URL.Query().Get("q"))
 	mailboxID := strings.TrimSpace(r.URL.Query().Get("mailboxId"))
 	folder := strings.TrimSpace(r.URL.Query().Get("folder"))
+	user := currentUser(r)
+	isSystemAdmin := user != nil && user.Role == "admin"
+	wantsUnregistered := mailboxID == "unregistered" || strings.EqualFold(folder, "Unregistered")
+	if wantsUnregistered && !isSystemAdmin {
+		respondError(w, http.StatusForbidden, "system admin required")
+		return
+	}
 	offset, _ := strconv.Atoi(r.URL.Query().Get("cursor"))
 	if offset < 0 {
 		offset = 0
@@ -765,6 +818,9 @@ func (a *App) handleAdminMessages(w http.ResponseWriter, r *http.Request) {
 
 	where := []string{"1=1"}
 	args := []any{}
+	if !isSystemAdmin {
+		where = append(where, "m.mailbox_id IS NOT NULL")
+	}
 	if mailboxID == "unregistered" {
 		where = append(where, "m.mailbox_id IS NULL")
 	} else if mailboxID != "" && mailboxID != "all" {
@@ -786,7 +842,7 @@ func (a *App) handleAdminMessages(w http.ResponseWriter, r *http.Request) {
 	}
 	args = append(args, limit+1, offset)
 
-	rows, err := a.db.QueryContext(r.Context(), `SELECT m.id,COALESCE(m.mailbox_id,''),COALESCE(mb.address,''),COALESCE(u.email,''),COALESCE(m.recipient_addr,''),COALESCE(m.folder_id,''),COALESCE(f.name,'Unregistered'),m.message_uid,m.message_id,m.subject,m.from_addr,COALESCE(m.from_name,''),m.to_addrs,m.cc_addrs,m.bcc_addrs,m.sent_at,m.received_at,m.snippet,m.is_read,m.is_starred,m.has_attachments,m.size_bytes
+	rows, err := a.db.QueryContext(r.Context(), `SELECT m.id,COALESCE(m.mailbox_id,''),COALESCE(mb.address,''),COALESCE(u.email,''),COALESCE(m.recipient_addr,''),COALESCE(m.folder_id,''),COALESCE(f.name,'Unregistered'),m.message_uid,m.imap_uid,m.imap_modseq,m.message_id,m.subject,m.from_addr,COALESCE(m.from_name,''),m.to_addrs,m.cc_addrs,m.bcc_addrs,m.sent_at,m.received_at,m.snippet,m.is_read,m.is_starred,m.has_attachments,m.size_bytes
 		FROM messages m
 		LEFT JOIN folders f ON f.id=m.folder_id
 		LEFT JOIN mailboxes mb ON mb.id=m.mailbox_id
@@ -822,6 +878,11 @@ func (a *App) handleAdminMessage(w http.ResponseWriter, r *http.Request) {
 		respondError(w, http.StatusNotFound, "message not found")
 		return
 	}
+	user := currentUser(r)
+	if msg.MailboxID == "" && (user == nil || user.Role != "admin") {
+		respondError(w, http.StatusForbidden, "system admin required")
+		return
+	}
 	if err := a.db.QueryRowContext(r.Context(), `SELECT COALESCE(mb.address,''),COALESCE(u.email,''),COALESCE(m.recipient_addr,'')
 		FROM messages m
 		LEFT JOIN mailboxes mb ON mb.id=m.mailbox_id
@@ -833,6 +894,116 @@ func (a *App) handleAdminMessage(w http.ResponseWriter, r *http.Request) {
 	respondJSON(w, http.StatusOK, msg)
 }
 
+func (a *App) handleAdminSendAudit(w http.ResponseWriter, r *http.Request) {
+	mailboxID := strings.TrimSpace(r.URL.Query().Get("mailboxId"))
+	messageID := strings.TrimSpace(r.URL.Query().Get("messageId"))
+	event := strings.TrimSpace(r.URL.Query().Get("event"))
+	from, err := adminAuditTimeParam(r.URL.Query().Get("from"), false)
+	if err != nil {
+		badRequest(w, err)
+		return
+	}
+	to, err := adminAuditTimeParam(r.URL.Query().Get("to"), true)
+	if err != nil {
+		badRequest(w, err)
+		return
+	}
+	offset, _ := strconv.Atoi(r.URL.Query().Get("cursor"))
+	if offset < 0 {
+		offset = 0
+	}
+	limit := 50
+
+	where := []string{"1=1"}
+	args := []any{}
+	if mailboxID != "" && mailboxID != "all" {
+		where = append(where, "sae.mailbox_id=?")
+		args = append(args, mailboxID)
+	}
+	if messageID != "" {
+		where = append(where, "(sq.message_id=? OR m.message_id=? OR sae.sent_message_id=?)")
+		args = append(args, messageID, messageID, messageID)
+	}
+	if event != "" && event != "all" {
+		if !isSendAuditEvent(event) {
+			badRequest(w, errors.New("invalid event"))
+			return
+		}
+		where = append(where, "sae.event=?")
+		args = append(args, event)
+	}
+	if from != "" {
+		where = append(where, "sae.created_at>=?")
+		args = append(args, from)
+	}
+	if to != "" {
+		where = append(where, "sae.created_at<=?")
+		args = append(args, to)
+	}
+	args = append(args, limit+1, offset)
+
+	rows, err := a.db.QueryContext(r.Context(), `SELECT sae.id,sae.queue_id,sae.mailbox_id,COALESCE(mb.address,''),sae.sent_message_id,COALESCE(sq.message_id,m.message_id,''),sae.source,sae.event,sae.status,sae.mail_from,sae.header_from,sae.recipients_json,sae.error,sae.created_at
+		FROM send_audit_events sae
+		LEFT JOIN mailboxes mb ON mb.id=sae.mailbox_id
+		LEFT JOIN send_queue sq ON sq.id=sae.queue_id
+		LEFT JOIN messages m ON m.id=sae.sent_message_id
+		WHERE `+strings.Join(where, " AND ")+`
+		ORDER BY sae.created_at DESC, sae.id DESC LIMIT ? OFFSET ?`, args...)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load send audit")
+		return
+	}
+	defer rows.Close()
+	items := []SendAuditEvent{}
+	for rows.Next() {
+		var item SendAuditEvent
+		var recipientsJSON, createdAt string
+		if err := rows.Scan(&item.ID, &item.QueueID, &item.MailboxID, &item.MailboxAddress, &item.SentMessageID, &item.MessageID, &item.Source, &item.Event, &item.Status, &item.MailFrom, &item.HeaderFrom, &recipientsJSON, &item.Error, &createdAt); err != nil {
+			respondError(w, http.StatusInternalServerError, "failed to scan send audit")
+			return
+		}
+		item.Recipients = jsonDecodeSlice(recipientsJSON)
+		item.CreatedAt = parseTime(createdAt)
+		items = append(items, item)
+	}
+	if err := rows.Err(); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load send audit")
+		return
+	}
+	next := ""
+	if len(items) > limit {
+		items = items[:limit]
+		next = strconv.Itoa(offset + limit)
+	}
+	respondJSON(w, http.StatusOK, map[string]any{"items": items, "nextCursor": next})
+}
+
+func adminAuditTimeParam(value string, endOfDay bool) (string, error) {
+	value = strings.TrimSpace(value)
+	if value == "" {
+		return "", nil
+	}
+	if t, err := time.Parse(time.RFC3339Nano, value); err == nil {
+		return t.UTC().Format(time.RFC3339Nano), nil
+	}
+	if t, err := time.Parse("2006-01-02", value); err == nil {
+		if endOfDay {
+			t = t.Add(24*time.Hour - time.Nanosecond)
+		}
+		return t.UTC().Format(time.RFC3339Nano), nil
+	}
+	return "", errors.New("invalid time filter")
+}
+
+func isSendAuditEvent(event string) bool {
+	switch event {
+	case sendAuditAccepted, sendAuditQueued, sendAuditRetry, sendAuditDelivered, sendAuditFailed, sendAuditCanceled:
+		return true
+	default:
+		return false
+	}
+}
+
 func (a *App) handleCreateAlias(w http.ResponseWriter, r *http.Request) {
 	var req struct {
 		DomainID    string `json:"domainId"`
@@ -854,7 +1025,7 @@ func (a *App) handleCreateAlias(w http.ResponseWriter, r *http.Request) {
 		source = normalizeLocalPart(source) + "@" + domain.Name
 	}
 	destination := normalizeEmail(req.Destination)
-	if source == "" || destination == "" || !strings.Contains(destination, "@") {
+	if source == "" || !strings.HasSuffix(source, "@"+domain.Name) || destination == "" || !strings.Contains(destination, "@") {
 		badRequest(w, errors.New("invalid alias"))
 		return
 	}
@@ -899,7 +1070,7 @@ func (a *App) handleUpdateAlias(w http.ResponseWriter, r *http.Request) {
 		source = normalizeLocalPart(source) + "@" + domain.Name
 	}
 	destination := normalizeEmail(req.Destination)
-	if source == "" || destination == "" || !strings.Contains(destination, "@") {
+	if source == "" || !strings.HasSuffix(source, "@"+domain.Name) || destination == "" || !strings.Contains(destination, "@") {
 		badRequest(w, errors.New("invalid alias"))
 		return
 	}
@@ -945,18 +1116,20 @@ func (a *App) domainByID(ctx context.Context, id string) (*Domain, error) {
 }
 
 func (a *App) adminUserByID(ctx context.Context, id string) (*AdminUser, error) {
-	row := a.db.QueryRowContext(ctx, `SELECT u.id,u.email,u.display_name,u.role,u.disabled,u.two_factor_enabled,u.created_at,COUNT(mb.id),COALESCE(GROUP_CONCAT(mb.address), '')
+	row := a.db.QueryRowContext(ctx, `SELECT u.id,u.login_name,u.email,u.display_name,u.role,u.disabled,u.two_factor_enabled,u.mailbox_limit_override,u.created_at,COUNT(mb.id),COALESCE(GROUP_CONCAT(mb.address), '')
 		FROM users u LEFT JOIN mailboxes mb ON mb.user_id=u.id
 		WHERE u.id=?
-		GROUP BY u.id,u.email,u.display_name,u.role,u.disabled,u.two_factor_enabled,u.created_at`, id)
+		GROUP BY u.id,u.login_name,u.email,u.display_name,u.role,u.disabled,u.two_factor_enabled,u.mailbox_limit_override,u.created_at`, id)
 	var item AdminUser
 	var disabled, twoFactorEnabled int
+	var mailboxLimitOverride sql.NullInt64
 	var created, mailboxCSV string
-	if err := row.Scan(&item.ID, &item.Email, &item.DisplayName, &item.Role, &disabled, &twoFactorEnabled, &created, &item.MailboxCount, &mailboxCSV); err != nil {
+	if err := row.Scan(&item.ID, &item.LoginName, &item.Email, &item.DisplayName, &item.Role, &disabled, &twoFactorEnabled, &mailboxLimitOverride, &created, &item.MailboxCount, &mailboxCSV); err != nil {
 		return nil, err
 	}
 	item.Disabled = intBool(disabled)
 	item.TwoFactorEnabled = intBool(twoFactorEnabled)
+	item.MailboxLimitOverride = intPtrFromNull(mailboxLimitOverride)
 	item.CreatedAt = parseTime(created)
 	item.Mailboxes = splitCSV(mailboxCSV)
 	if err := a.attachUserAuthorization(ctx, &item.User); err != nil {
@@ -1039,6 +1212,14 @@ func (a *App) ensureFolder(ctx context.Context, mailboxID, folder string) (strin
 	}
 	role := strings.ToLower(folder)
 	id = newID("fld")
-	_, err := a.db.ExecContext(ctx, `INSERT INTO folders(id,mailbox_id,name,role,created_at) VALUES(?,?,?,?,?)`, id, mailboxID, folder, role, a.now().UTC().Format(time.RFC3339Nano))
+	sortOrder := 0
+	if !isSystemFolderName(folder) {
+		var err error
+		sortOrder, err = a.nextCustomFolderSortOrder(ctx, mailboxID)
+		if err != nil {
+			return "", err
+		}
+	}
+	_, err := a.db.ExecContext(ctx, `INSERT INTO folders(id,mailbox_id,name,role,sort_order,uid_validity,uid_next,highest_modseq,created_at) VALUES(?,?,?,?,?,?,?,?,?)`, id, mailboxID, folder, role, sortOrder, a.newUIDValidity(), 1, 1, a.now().UTC().Format(time.RFC3339Nano))
 	return id, err
 }

apps/api/internal/app/api_token_handlers.go

@@ -0,0 +1,282 @@
+package app
+
+import (
+	"context"
+	"database/sql"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/go-chi/chi/v5"
+)
+
+const defaultAPITokenTTL = 90 * 24 * time.Hour
+
+var validAPITokenScopes = map[string]bool{
+	"*":               true,
+	"domains:read":    true,
+	"domains:write":   true,
+	"mailboxes:read":  true,
+	"mailboxes:write": true,
+	"messages:read":   true,
+	"messages:send":   true,
+	"messages:manage": true,
+	"aliases:read":    true,
+	"aliases:write":   true,
+	"dns:read":        true,
+	"dns:check":       true,
+}
+
+func (a *App) handleListAPITokens(w http.ResponseWriter, r *http.Request) {
+	user := currentUser(r)
+	rows, err := a.db.QueryContext(r.Context(), `SELECT id,name,last_used_at,expires_at,disabled,scopes_json,created_at,updated_at
+		FROM api_tokens WHERE user_id=? ORDER BY created_at DESC`, user.ID)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to list api tokens")
+		return
+	}
+	defer rows.Close()
+	items := []APIToken{}
+	for rows.Next() {
+		item, err := scanAPIToken(rows)
+		if err != nil {
+			respondError(w, http.StatusInternalServerError, "failed to scan api tokens")
+			return
+		}
+		items = append(items, item)
+	}
+	if err := rows.Err(); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to list api tokens")
+		return
+	}
+	respondJSON(w, http.StatusOK, map[string]any{"items": items})
+}
+
+func (a *App) handleCreateAPIToken(w http.ResponseWriter, r *http.Request) {
+	user := currentUser(r)
+	var req struct {
+		Name      string          `json:"name"`
+		ExpiresAt string          `json:"expiresAt"`
+		Scopes    json.RawMessage `json:"scopes"`
+	}
+	if err := decodeJSON(r, &req); err != nil {
+		badRequest(w, err)
+		return
+	}
+	name := strings.TrimSpace(req.Name)
+	if name == "" {
+		badRequest(w, errors.New("name is required"))
+		return
+	}
+	if len([]rune(name)) > 80 {
+		badRequest(w, errors.New("name cannot exceed 80 characters"))
+		return
+	}
+	expiresAt, err := parseOptionalFutureTime(req.ExpiresAt, a.now().UTC())
+	if err != nil {
+		badRequest(w, err)
+		return
+	}
+	if expiresAt == nil {
+		defaultExpiry := a.now().UTC().Add(defaultAPITokenTTL)
+		expiresAt = &defaultExpiry
+	}
+	var requestedScopes []string
+	if len(req.Scopes) > 0 {
+		if string(req.Scopes) == "null" || json.Unmarshal(req.Scopes, &requestedScopes) != nil {
+			badRequest(w, errors.New("scopes must be an array of strings"))
+			return
+		}
+	} else {
+		requestedScopes = nil
+	}
+	scopes, err := normalizeAPITokenScopes(requestedScopes)
+	if err != nil {
+		badRequest(w, err)
+		return
+	}
+	id := newID("apt")
+	token := "lq_" + randomToken()
+	now := a.now().UTC().Format(time.RFC3339Nano)
+	var expiresValue any
+	if expiresAt != nil {
+		expiresValue = expiresAt.UTC().Format(time.RFC3339Nano)
+	}
+	if _, err := a.db.ExecContext(r.Context(), `INSERT INTO api_tokens(id,user_id,name,token_hash,expires_at,disabled,scopes_json,created_at,updated_at)
+		VALUES(?,?,?,?,?,?,?,?,?)`, id, user.ID, name, hashToken(token), expiresValue, 0, jsonEncode(scopes), now, now); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to create api token")
+		return
+	}
+	item, err := a.apiTokenByID(r.Context(), user.ID, id)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load api token")
+		return
+	}
+	respondJSON(w, http.StatusCreated, map[string]any{"token": token, "item": item})
+}
+
+func (a *App) handleUpdateAPIToken(w http.ResponseWriter, r *http.Request) {
+	user := currentUser(r)
+	id := strings.TrimSpace(chi.URLParam(r, "id"))
+	if id == "" {
+		respondError(w, http.StatusNotFound, "api token not found")
+		return
+	}
+	var req struct {
+		Name      *string   `json:"name"`
+		ExpiresAt *string   `json:"expiresAt"`
+		Disabled  *bool     `json:"disabled"`
+		Scopes    *[]string `json:"scopes"`
+	}
+	if err := decodeJSON(r, &req); err != nil {
+		badRequest(w, err)
+		return
+	}
+	current, err := a.apiTokenByID(r.Context(), user.ID, id)
+	if err != nil {
+		respondError(w, http.StatusNotFound, "api token not found")
+		return
+	}
+	name := current.Name
+	if req.Name != nil {
+		name = strings.TrimSpace(*req.Name)
+		if name == "" {
+			badRequest(w, errors.New("name is required"))
+			return
+		}
+		if len([]rune(name)) > 80 {
+			badRequest(w, errors.New("name cannot exceed 80 characters"))
+			return
+		}
+	}
+	var expiresValue any
+	if current.ExpiresAt != nil {
+		expiresValue = current.ExpiresAt.UTC().Format(time.RFC3339Nano)
+	}
+	if req.ExpiresAt != nil {
+		if strings.TrimSpace(*req.ExpiresAt) == "" {
+			badRequest(w, errors.New("expiresAt must be an RFC3339 timestamp"))
+			return
+		}
+		expiresAt, err := parseOptionalFutureTime(*req.ExpiresAt, a.now().UTC())
+		if err != nil {
+			badRequest(w, err)
+			return
+		}
+		expiresValue = nil
+		if expiresAt != nil {
+			expiresValue = expiresAt.UTC().Format(time.RFC3339Nano)
+		}
+	}
+	disabled := current.Disabled
+	if req.Disabled != nil {
+		disabled = *req.Disabled
+	}
+	scopes := current.Scopes
+	if req.Scopes != nil {
+		scopes, err = normalizeAPITokenScopes(*req.Scopes)
+		if err != nil {
+			badRequest(w, err)
+			return
+		}
+	}
+	res, err := a.db.ExecContext(r.Context(), `UPDATE api_tokens SET name=?,expires_at=?,disabled=?,scopes_json=?,updated_at=? WHERE id=? AND user_id=?`,
+		name, expiresValue, boolInt(disabled), jsonEncode(scopes), a.now().UTC().Format(time.RFC3339Nano), id, user.ID)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to update api token")
+		return
+	}
+	if affected, _ := res.RowsAffected(); affected == 0 {
+		respondError(w, http.StatusNotFound, "api token not found")
+		return
+	}
+	item, err := a.apiTokenByID(r.Context(), user.ID, id)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load api token")
+		return
+	}
+	respondJSON(w, http.StatusOK, item)
+}
+
+func (a *App) handleDeleteAPIToken(w http.ResponseWriter, r *http.Request) {
+	user := currentUser(r)
+	res, err := a.db.ExecContext(r.Context(), `DELETE FROM api_tokens WHERE id=? AND user_id=?`, chi.URLParam(r, "id"), user.ID)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to delete api token")
+		return
+	}
+	if affected, _ := res.RowsAffected(); affected == 0 {
+		respondError(w, http.StatusNotFound, "api token not found")
+		return
+	}
+	respondJSON(w, http.StatusOK, map[string]any{"ok": true})
+}
+
+func (a *App) apiTokenByID(ctx context.Context, userID, id string) (APIToken, error) {
+	row := a.db.QueryRowContext(ctx, `SELECT id,name,last_used_at,expires_at,disabled,scopes_json,created_at,updated_at
+		FROM api_tokens WHERE id=? AND user_id=?`, id, userID)
+	return scanAPIToken(row)
+}
+
+type apiTokenScanner interface{ Scan(dest ...any) error }
+
+func scanAPIToken(row apiTokenScanner) (APIToken, error) {
+	var item APIToken
+	var lastUsed, expires sql.NullString
+	var disabled int
+	var scopesJSON, created, updated string
+	if err := row.Scan(&item.ID, &item.Name, &lastUsed, &expires, &disabled, &scopesJSON, &created, &updated); err != nil {
+		return item, err
+	}
+	item.LastUsedAt = nullableTime(lastUsed)
+	item.ExpiresAt = nullableTime(expires)
+	item.Disabled = intBool(disabled)
+	item.Scopes = jsonDecodeSlice(scopesJSON)
+	item.CreatedAt = parseTime(created)
+	item.UpdatedAt = parseTime(updated)
+	return item, nil
+}
+
+func normalizeAPITokenScopes(scopes []string) ([]string, error) {
+	if scopes == nil {
+		return []string{"*"}, nil
+	}
+	if len(scopes) == 0 {
+		return nil, errors.New("at least one api token scope is required")
+	}
+	seen := map[string]bool{}
+	out := make([]string, 0, len(scopes))
+	for _, scope := range scopes {
+		scope = strings.ToLower(strings.TrimSpace(scope))
+		if !validAPITokenScopes[scope] {
+			return nil, fmt.Errorf("invalid api token scope: %s", scope)
+		}
+		if !seen[scope] {
+			seen[scope] = true
+			out = append(out, scope)
+		}
+	}
+	if seen["*"] && len(out) != 1 {
+		return nil, errors.New("wildcard scope cannot be combined with other scopes")
+	}
+	return out, nil
+}
+
+func parseOptionalFutureTime(value string, now time.Time) (*time.Time, error) {
+	value = strings.TrimSpace(value)
+	if value == "" {
+		return nil, nil
+	}
+	t, err := time.Parse(time.RFC3339Nano, value)
+	if err != nil {
+		return nil, errors.New("expiresAt must be an RFC3339 timestamp")
+	}
+	t = t.UTC()
+	if !t.After(now) {
+		return nil, errors.New("expiresAt must be in the future")
+	}
+	return &t, nil
+}

apps/api/internal/app/app.go

@@ -15,6 +15,7 @@ import (
 	"os"
 	"path/filepath"
 	"strings"
+	"sync"
 	"time"
 
 	"golang.org/x/crypto/bcrypt"
@@ -22,12 +23,15 @@ import (
 )
 
 type App struct {
-	cfg          Config
-	db           *sql.DB
-	log          *slog.Logger
-	now          func() time.Time
-	policy       *HTMLPolicy
-	workerCancel context.CancelFunc
+	cfg           Config
+	db            *sql.DB
+	log           *slog.Logger
+	now           func() time.Time
+	policy        *HTMLPolicy
+	workerCancel  context.CancelFunc
+	workerWG      sync.WaitGroup
+	maildirHealth *maildirSyncHealthTracker
+	externalIMAP  externalIMAPClientFactory
 }
 
 func New(cfg Config, logger *slog.Logger) (*App, error) {
@@ -47,7 +51,8 @@ func New(cfg Config, logger *slog.Logger) (*App, error) {
 	}
 	db.SetMaxOpenConns(1)
 
-	a := &App{cfg: cfg, db: db, log: logger, now: time.Now, policy: NewHTMLPolicy()}
+	a := &App{cfg: cfg, db: db, log: logger, now: time.Now, policy: NewHTMLPolicy(), maildirHealth: newMaildirSyncHealthTracker()}
+	a.externalIMAP = a
 	if err := a.configureSQLite(context.Background()); err != nil {
 		db.Close()
 		return nil, err
@@ -70,15 +75,25 @@ func New(cfg Config, logger *slog.Logger) (*App, error) {
 	}
 	workerCtx, cancel := context.WithCancel(context.Background())
 	a.workerCancel = cancel
-	go a.scheduledSendWorker(workerCtx)
+	a.startWorker(func() { a.scheduledSendWorker(workerCtx) })
 	if strings.TrimSpace(a.cfg.MaildirRoot) != "" {
-		go a.maildirWorker(workerCtx)
+		a.startWorker(func() { a.maildirWorker(workerCtx) })
 	}
-	go a.sendQueueWorker(workerCtx)
-	go a.smtpEventsCleanupWorker(workerCtx)
+	a.startWorker(func() { a.sendQueueWorker(workerCtx) })
+	a.startWorker(func() { a.externalIMAPWorker(workerCtx) })
+	a.startWorker(func() { a.smtpEventsCleanupWorker(workerCtx) })
+	a.startWorker(func() { a.statusWebhookWorker(workerCtx) })
 	return a, nil
 }
 
+func (a *App) startWorker(fn func()) {
+	a.workerWG.Add(1)
+	go func() {
+		defer a.workerWG.Done()
+		fn()
+	}()
+}
+
 func (a *App) Close() error {
 	if a == nil || a.db == nil {
 		return nil
@@ -86,6 +101,7 @@ func (a *App) Close() error {
 	if a.workerCancel != nil {
 		a.workerCancel()
 	}
+	a.workerWG.Wait()
 	return a.db.Close()
 }
 
@@ -107,12 +123,14 @@ func (a *App) migrate(ctx context.Context) error {
 	stmts := []string{
 		`CREATE TABLE IF NOT EXISTS users (
 			id TEXT PRIMARY KEY,
+			login_name TEXT NOT NULL DEFAULT '',
 			email TEXT NOT NULL UNIQUE,
 			display_name TEXT NOT NULL,
 			role TEXT NOT NULL CHECK(role IN ('admin','user')),
 			password_hash TEXT NOT NULL,
 			two_factor_secret TEXT NOT NULL DEFAULT '',
 			two_factor_enabled INTEGER NOT NULL DEFAULT 0,
+			mailbox_limit_override INTEGER,
 			disabled INTEGER NOT NULL DEFAULT 0,
 			created_at TEXT NOT NULL,
 			updated_at TEXT NOT NULL
@@ -122,7 +140,7 @@ func (a *App) migrate(ctx context.Context) error {
 			name TEXT NOT NULL UNIQUE,
 			description TEXT NOT NULL DEFAULT '',
 			permissions_json TEXT NOT NULL DEFAULT '[]',
-			limits_json TEXT NOT NULL DEFAULT '{"maxAttachmentMb":25,"smtpDailyLimit":200,"smtpMinuteLimit":20,"imapMinuteLimit":200,"pop3MinuteLimit":150}',
+			limits_json TEXT NOT NULL DEFAULT '{"maxAttachmentMb":25,"maxMailboxCount":9,"smtpDailyLimit":200,"smtpMinuteLimit":20,"imapMinuteLimit":200,"pop3MinuteLimit":150}',
 			system INTEGER NOT NULL DEFAULT 0,
 			created_at TEXT NOT NULL,
 			updated_at TEXT NOT NULL
@@ -148,6 +166,30 @@ func (a *App) migrate(ctx context.Context) error {
 			expires_at TEXT NOT NULL,
 			created_at TEXT NOT NULL
 		)`,
+		`CREATE TABLE IF NOT EXISTS api_tokens (
+			id TEXT PRIMARY KEY,
+			user_id TEXT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+			name TEXT NOT NULL,
+			token_hash TEXT NOT NULL UNIQUE,
+			last_used_at TEXT,
+			expires_at TEXT NOT NULL,
+			disabled INTEGER NOT NULL DEFAULT 0,
+			scopes_json TEXT NOT NULL DEFAULT '["*"]',
+			created_at TEXT NOT NULL,
+			updated_at TEXT NOT NULL
+		)`,
+		`CREATE TABLE IF NOT EXISTS send_idempotency_keys (
+			user_id TEXT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+			idempotency_key TEXT NOT NULL,
+			request_hash TEXT NOT NULL,
+			sent_message_id TEXT NOT NULL DEFAULT '',
+			queue_id TEXT NOT NULL DEFAULT '',
+			created_at TEXT NOT NULL,
+			PRIMARY KEY(user_id, idempotency_key)
+		)`,
+		`CREATE INDEX IF NOT EXISTS idx_send_idempotency_created ON send_idempotency_keys(created_at)`,
+		`CREATE INDEX IF NOT EXISTS idx_api_tokens_user ON api_tokens(user_id, created_at DESC)`,
+		`CREATE INDEX IF NOT EXISTS idx_api_tokens_hash ON api_tokens(token_hash)`,
 		`CREATE TABLE IF NOT EXISTS system_settings (
 			key TEXT PRIMARY KEY,
 			value TEXT NOT NULL,
@@ -187,6 +229,35 @@ func (a *App) migrate(ctx context.Context) error {
 			updated_at TEXT NOT NULL,
 			UNIQUE(domain_id, local_part)
 		)`,
+		`CREATE TABLE IF NOT EXISTS forwarding_verified_emails (
+			id TEXT PRIMARY KEY,
+			user_id TEXT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+			email TEXT NOT NULL,
+			verified INTEGER NOT NULL DEFAULT 0,
+			verified_at TEXT,
+			verification_token_hash TEXT NOT NULL DEFAULT '',
+			verification_sent_at TEXT,
+			verification_expires_at TEXT,
+			delivery_queue_id TEXT NOT NULL DEFAULT '',
+			delivery_status TEXT NOT NULL DEFAULT '',
+			delivery_error TEXT NOT NULL DEFAULT '',
+			created_at TEXT NOT NULL,
+			updated_at TEXT NOT NULL,
+			UNIQUE(user_id, email)
+		)`,
+		`CREATE INDEX IF NOT EXISTS idx_forwarding_verified_emails_user ON forwarding_verified_emails(user_id, email)`,
+		`CREATE TABLE IF NOT EXISTS account_forwarding_settings (
+			user_id TEXT PRIMARY KEY REFERENCES users(id) ON DELETE CASCADE,
+			target_email TEXT NOT NULL DEFAULT '',
+			target_emails TEXT NOT NULL DEFAULT '[]',
+			updated_at TEXT NOT NULL
+		)`,
+		`CREATE TABLE IF NOT EXISTS mailbox_forwarding_settings (
+			mailbox_id TEXT PRIMARY KEY REFERENCES mailboxes(id) ON DELETE CASCADE,
+			target_email TEXT NOT NULL DEFAULT '',
+			target_emails TEXT NOT NULL DEFAULT '[]',
+			updated_at TEXT NOT NULL
+		)`,
 		`CREATE TABLE IF NOT EXISTS aliases (
 			id TEXT PRIMARY KEY,
 			domain_id TEXT NOT NULL REFERENCES domains(id) ON DELETE CASCADE,
@@ -201,6 +272,10 @@ func (a *App) migrate(ctx context.Context) error {
 			mailbox_id TEXT NOT NULL REFERENCES mailboxes(id) ON DELETE CASCADE,
 			name TEXT NOT NULL,
 			role TEXT NOT NULL,
+			sort_order INTEGER NOT NULL DEFAULT 0,
+			uid_validity INTEGER NOT NULL DEFAULT 0,
+			uid_next INTEGER NOT NULL DEFAULT 1,
+			highest_modseq INTEGER NOT NULL DEFAULT 1,
 			created_at TEXT NOT NULL,
 			UNIQUE(mailbox_id, name)
 		)`,
@@ -226,7 +301,14 @@ func (a *App) migrate(ctx context.Context) error {
 			is_starred INTEGER NOT NULL DEFAULT 0,
 			has_attachments INTEGER NOT NULL DEFAULT 0,
 			size_bytes INTEGER NOT NULL DEFAULT 0,
+			auth_results TEXT NOT NULL DEFAULT '',
+			auth_spf TEXT NOT NULL DEFAULT 'unknown',
+			auth_dkim TEXT NOT NULL DEFAULT 'unknown',
+			auth_dmarc TEXT NOT NULL DEFAULT 'unknown',
+			received_spf TEXT NOT NULL DEFAULT '',
 			raw_path TEXT NOT NULL DEFAULT '',
+			imap_uid INTEGER NOT NULL DEFAULT 0,
+			imap_modseq INTEGER NOT NULL DEFAULT 1,
 			created_at TEXT NOT NULL,
 			updated_at TEXT NOT NULL
 		)`,
@@ -288,6 +370,45 @@ func (a *App) migrate(ctx context.Context) error {
 			created_at TEXT NOT NULL
 		)`,
 		`CREATE INDEX IF NOT EXISTS idx_send_audit_events_created ON send_audit_events(created_at)`,
+		`CREATE TABLE IF NOT EXISTS delivery_events (
+			id TEXT PRIMARY KEY,
+			external_id TEXT NOT NULL,
+			provider TEXT NOT NULL,
+			queue_id TEXT NOT NULL DEFAULT '',
+			sent_message_id TEXT NOT NULL DEFAULT '',
+			rfc_message_id TEXT NOT NULL DEFAULT '',
+			recipient TEXT NOT NULL,
+			status TEXT NOT NULL,
+			reason TEXT NOT NULL DEFAULT '',
+			occurred_at TEXT NOT NULL,
+			created_at TEXT NOT NULL,
+			UNIQUE(provider, external_id)
+		)`,
+		`CREATE INDEX IF NOT EXISTS idx_delivery_events_message ON delivery_events(sent_message_id, occurred_at, id)`,
+		`CREATE INDEX IF NOT EXISTS idx_delivery_events_rfc_message ON delivery_events(rfc_message_id, occurred_at, id)`,
+		`CREATE TABLE IF NOT EXISTS status_webhook_outbox (
+			id TEXT PRIMARY KEY,
+			event_key TEXT NOT NULL UNIQUE,
+			event_type TEXT NOT NULL,
+			mailbox_id TEXT NOT NULL DEFAULT '',
+			payload_json TEXT NOT NULL,
+			attempt_count INTEGER NOT NULL DEFAULT 0,
+			next_attempt_at TEXT NOT NULL,
+			last_error TEXT NOT NULL DEFAULT '',
+			created_at TEXT NOT NULL,
+			updated_at TEXT NOT NULL,
+			delivered_at TEXT
+		)`,
+		`CREATE INDEX IF NOT EXISTS idx_status_webhook_outbox_due ON status_webhook_outbox(delivered_at,next_attempt_at,created_at)`,
+		`CREATE INDEX IF NOT EXISTS idx_status_webhook_outbox_mailbox ON status_webhook_outbox(mailbox_id,created_at)`,
+		`CREATE TRIGGER IF NOT EXISTS trg_mailbox_delete_status_webhook_outbox
+			AFTER DELETE ON mailboxes BEGIN
+				DELETE FROM status_webhook_outbox WHERE mailbox_id=OLD.id;
+			END`,
+		`CREATE TRIGGER IF NOT EXISTS trg_send_queue_delete_delivery_events
+			AFTER DELETE ON send_queue BEGIN
+				DELETE FROM delivery_events WHERE queue_id=OLD.id;
+			END`,
 		`CREATE TABLE IF NOT EXISTS attachments (
 			id TEXT PRIMARY KEY,
 			message_id TEXT NOT NULL REFERENCES messages(id) ON DELETE CASCADE,
@@ -332,6 +453,70 @@ func (a *App) migrate(ctx context.Context) error {
 			created_at TEXT NOT NULL
 		)`,
 		`CREATE INDEX IF NOT EXISTS idx_pop3_events_user_created ON pop3_events(user_id, created_at)`,
+		`CREATE TABLE IF NOT EXISTS external_imap_accounts (
+			id TEXT PRIMARY KEY,
+			user_id TEXT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+			mailbox_id TEXT NOT NULL REFERENCES mailboxes(id) ON DELETE CASCADE,
+			name TEXT NOT NULL,
+			host TEXT NOT NULL,
+			port INTEGER NOT NULL,
+			tls_mode TEXT NOT NULL CHECK(tls_mode IN ('tls','starttls','plain')),
+			username TEXT NOT NULL,
+			password_ciphertext TEXT NOT NULL,
+			auth_mode TEXT NOT NULL DEFAULT 'password' CHECK(auth_mode IN ('password','oauth2')),
+			oauth_provider TEXT NOT NULL DEFAULT '',
+			oauth_email TEXT NOT NULL DEFAULT '',
+			oauth_access_token_ciphertext TEXT NOT NULL DEFAULT '',
+			oauth_refresh_token_ciphertext TEXT NOT NULL DEFAULT '',
+			oauth_expiry TEXT,
+			storage_mode TEXT NOT NULL DEFAULT 'local' CHECK(storage_mode IN ('local','remote')),
+			sync_read_state INTEGER NOT NULL DEFAULT 1,
+			enabled INTEGER NOT NULL DEFAULT 1,
+			last_sync_at TEXT,
+			last_status TEXT NOT NULL DEFAULT 'idle',
+			last_error TEXT NOT NULL DEFAULT '',
+			created_at TEXT NOT NULL,
+			updated_at TEXT NOT NULL
+		)`,
+		`CREATE INDEX IF NOT EXISTS idx_external_imap_accounts_user_mailbox ON external_imap_accounts(user_id, mailbox_id)`,
+		`CREATE INDEX IF NOT EXISTS idx_external_imap_accounts_enabled ON external_imap_accounts(enabled, updated_at)`,
+		`CREATE TABLE IF NOT EXISTS external_imap_folder_states (
+			account_id TEXT NOT NULL REFERENCES external_imap_accounts(id) ON DELETE CASCADE,
+			remote_folder TEXT NOT NULL,
+			local_folder_id TEXT NOT NULL DEFAULT '',
+			uid_validity INTEGER NOT NULL DEFAULT 0,
+			last_uid INTEGER NOT NULL DEFAULT 0,
+			last_sync_at TEXT,
+			created_at TEXT NOT NULL,
+			updated_at TEXT NOT NULL,
+			PRIMARY KEY(account_id, remote_folder)
+		)`,
+		`CREATE TABLE IF NOT EXISTS external_imap_messages (
+			account_id TEXT NOT NULL REFERENCES external_imap_accounts(id) ON DELETE CASCADE,
+			remote_folder TEXT NOT NULL,
+			uid_validity INTEGER NOT NULL,
+			uid INTEGER NOT NULL,
+			message_id TEXT NOT NULL DEFAULT '',
+			local_message_id TEXT NOT NULL DEFAULT '',
+			is_read INTEGER NOT NULL DEFAULT 0,
+			created_at TEXT NOT NULL,
+			updated_at TEXT NOT NULL,
+			PRIMARY KEY(account_id, remote_folder, uid_validity, uid)
+		)`,
+		`CREATE INDEX IF NOT EXISTS idx_external_imap_messages_local ON external_imap_messages(local_message_id) WHERE local_message_id <> ''`,
+		`CREATE TABLE IF NOT EXISTS external_imap_sync_runs (
+			id TEXT PRIMARY KEY,
+			account_id TEXT NOT NULL REFERENCES external_imap_accounts(id) ON DELETE CASCADE,
+			folder TEXT NOT NULL DEFAULT '',
+			status TEXT NOT NULL,
+			imported INTEGER NOT NULL DEFAULT 0,
+			skipped INTEGER NOT NULL DEFAULT 0,
+			failed INTEGER NOT NULL DEFAULT 0,
+			error TEXT NOT NULL DEFAULT '',
+			started_at TEXT NOT NULL,
+			finished_at TEXT
+		)`,
+		`CREATE INDEX IF NOT EXISTS idx_external_imap_sync_runs_account_started ON external_imap_sync_runs(account_id, started_at DESC)`,
 
 		`CREATE TABLE IF NOT EXISTS contacts (
 			id TEXT PRIMARY KEY,
@@ -413,9 +598,21 @@ func (a *App) migrate(ctx context.Context) error {
 	if err := a.migrateMessagesFromName(ctx); err != nil {
 		return err
 	}
+	if err := a.migrateMessageAuthentication(ctx); err != nil {
+		return err
+	}
+	if err := a.rebuildHTMLOnlyMessageSnippets(ctx); err != nil {
+		return err
+	}
+	if err := a.migrateUserLoginNames(ctx); err != nil {
+		return err
+	}
 	if err := a.migrateUsersForTwoFactor(ctx); err != nil {
 		return err
 	}
+	if err := a.migrateUserMailboxLimitOverride(ctx); err != nil {
+		return err
+	}
 	if err := a.migrateMailRulesBuilder(ctx); err != nil {
 		return err
 	}
@@ -428,12 +625,215 @@ func (a *App) migrate(ctx context.Context) error {
 	if err := a.migrateSendQueueMessageID(ctx); err != nil {
 		return err
 	}
+	if err := a.migrateIMAPMetadata(ctx); err != nil {
+		return err
+	}
+	if err := a.migrateFolderSortOrder(ctx); err != nil {
+		return err
+	}
+	if err := a.migrateExternalIMAP(ctx); err != nil {
+		return err
+	}
+	if err := a.migrateForwardingVerification(ctx); err != nil {
+		return err
+	}
+	if err := a.migrateForwardingTargets(ctx); err != nil {
+		return err
+	}
+	if err := a.migrateAPITokenScopes(ctx); err != nil {
+		return err
+	}
 	if err := a.ensureDefaultPermissionGroups(ctx); err != nil {
 		return err
 	}
 	return nil
 }
 
+func (a *App) migrateForwardingVerification(ctx context.Context) error {
+	columns := []struct {
+		name string
+		sql  string
+	}{
+		{"verified_at", `ALTER TABLE forwarding_verified_emails ADD COLUMN verified_at TEXT`},
+		{"verification_token_hash", `ALTER TABLE forwarding_verified_emails ADD COLUMN verification_token_hash TEXT NOT NULL DEFAULT ''`},
+		{"verification_sent_at", `ALTER TABLE forwarding_verified_emails ADD COLUMN verification_sent_at TEXT`},
+		{"verification_expires_at", `ALTER TABLE forwarding_verified_emails ADD COLUMN verification_expires_at TEXT`},
+		{"delivery_queue_id", `ALTER TABLE forwarding_verified_emails ADD COLUMN delivery_queue_id TEXT NOT NULL DEFAULT ''`},
+		{"delivery_status", `ALTER TABLE forwarding_verified_emails ADD COLUMN delivery_status TEXT NOT NULL DEFAULT ''`},
+		{"delivery_error", `ALTER TABLE forwarding_verified_emails ADD COLUMN delivery_error TEXT NOT NULL DEFAULT ''`},
+	}
+	for _, column := range columns {
+		if err := a.ensureTableColumn(ctx, "forwarding_verified_emails", column.name, column.sql); err != nil {
+			return err
+		}
+	}
+	_, err := a.db.ExecContext(ctx, `UPDATE forwarding_verified_emails SET verified_at=created_at WHERE verified=1 AND (verified_at IS NULL OR verified_at='')`)
+	return err
+}
+
+func (a *App) migrateForwardingTargets(ctx context.Context) error {
+	if err := a.ensureTableColumn(ctx, "account_forwarding_settings", "target_emails", `ALTER TABLE account_forwarding_settings ADD COLUMN target_emails TEXT NOT NULL DEFAULT '[]'`); err != nil {
+		return err
+	}
+	if err := a.ensureTableColumn(ctx, "mailbox_forwarding_settings", "target_emails", `ALTER TABLE mailbox_forwarding_settings ADD COLUMN target_emails TEXT NOT NULL DEFAULT '[]'`); err != nil {
+		return err
+	}
+	if err := a.backfillForwardingTargets(ctx, "account_forwarding_settings", "user_id"); err != nil {
+		return err
+	}
+	return a.backfillForwardingTargets(ctx, "mailbox_forwarding_settings", "mailbox_id")
+}
+
+func (a *App) backfillForwardingTargets(ctx context.Context, table, keyColumn string) error {
+	rows, err := a.db.QueryContext(ctx, fmt.Sprintf(`SELECT %s,target_email,target_emails FROM %s`, keyColumn, table))
+	if err != nil {
+		return err
+	}
+	defer rows.Close()
+	type row struct {
+		key         string
+		targetEmail string
+		targetsJSON string
+	}
+	var updates []row
+	for rows.Next() {
+		var item row
+		if err := rows.Scan(&item.key, &item.targetEmail, &item.targetsJSON); err != nil {
+			return err
+		}
+		targets := forwardingTargetsFromStored(item.targetEmail, item.targetsJSON)
+		if len(targets) == 0 || len(jsonDecodeSlice(item.targetsJSON)) > 0 {
+			continue
+		}
+		updates = append(updates, item)
+	}
+	if err := rows.Err(); err != nil {
+		return err
+	}
+	if err := rows.Close(); err != nil {
+		return err
+	}
+	for _, item := range updates {
+		targets := forwardingTargetsFromStored(item.targetEmail, item.targetsJSON)
+		if _, err := a.db.ExecContext(ctx, fmt.Sprintf(`UPDATE %s SET target_emails=? WHERE %s=?`, table, keyColumn), jsonEncode(targets), item.key); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (a *App) migrateAPITokenScopes(ctx context.Context) error {
+	rows, err := a.db.QueryContext(ctx, `PRAGMA table_info(api_tokens)`)
+	if err != nil {
+		return err
+	}
+	hasScopes := false
+	for rows.Next() {
+		var cid int
+		var name, typ string
+		var notnull int
+		var dflt any
+		var pk int
+		if err := rows.Scan(&cid, &name, &typ, &notnull, &dflt, &pk); err != nil {
+			rows.Close()
+			return err
+		}
+		if name == "scopes_json" {
+			hasScopes = true
+		}
+	}
+	if err := rows.Close(); err != nil {
+		return err
+	}
+	if hasScopes {
+		return nil
+	}
+	_, err = a.db.ExecContext(ctx, `ALTER TABLE api_tokens ADD COLUMN scopes_json TEXT NOT NULL DEFAULT '["*"]'`)
+	return err
+}
+
+func (a *App) migrateMessageAuthentication(ctx context.Context) error {
+	rows, err := a.db.QueryContext(ctx, `PRAGMA table_info(messages)`)
+	if err != nil {
+		return err
+	}
+	defer rows.Close()
+	columns := map[string]bool{}
+	for rows.Next() {
+		var cid int
+		var name, typ string
+		var notnull int
+		var dflt any
+		var pk int
+		if err := rows.Scan(&cid, &name, &typ, &notnull, &dflt, &pk); err != nil {
+			return err
+		}
+		columns[name] = true
+	}
+	if err := rows.Err(); err != nil {
+		return err
+	}
+	alter := []struct {
+		name string
+		sql  string
+	}{
+		{"auth_results", `ALTER TABLE messages ADD COLUMN auth_results TEXT NOT NULL DEFAULT ''`},
+		{"auth_spf", `ALTER TABLE messages ADD COLUMN auth_spf TEXT NOT NULL DEFAULT 'unknown'`},
+		{"auth_dkim", `ALTER TABLE messages ADD COLUMN auth_dkim TEXT NOT NULL DEFAULT 'unknown'`},
+		{"auth_dmarc", `ALTER TABLE messages ADD COLUMN auth_dmarc TEXT NOT NULL DEFAULT 'unknown'`},
+		{"received_spf", `ALTER TABLE messages ADD COLUMN received_spf TEXT NOT NULL DEFAULT ''`},
+	}
+	for _, item := range alter {
+		if !columns[item.name] {
+			if _, err := a.db.ExecContext(ctx, item.sql); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func (a *App) rebuildHTMLOnlyMessageSnippets(ctx context.Context) error {
+	rows, err := a.db.QueryContext(ctx, `SELECT id,body_html,snippet FROM messages WHERE trim(body_text)='' AND body_html<>''`)
+	if err != nil {
+		return err
+	}
+	defer rows.Close()
+	type update struct {
+		id      string
+		snippet string
+	}
+	updates := []update{}
+	for rows.Next() {
+		var id, bodyHTML, current string
+		if err := rows.Scan(&id, &bodyHTML, &current); err != nil {
+			return err
+		}
+		next := snippetFrom("", bodyHTML)
+		if next != current {
+			updates = append(updates, update{id: id, snippet: next})
+		}
+	}
+	if err := rows.Err(); err != nil {
+		return err
+	}
+	if len(updates) == 0 {
+		return nil
+	}
+	now := a.now().UTC().Format(time.RFC3339Nano)
+	tx, err := a.db.BeginTx(ctx, nil)
+	if err != nil {
+		return err
+	}
+	defer tx.Rollback()
+	for _, item := range updates {
+		if _, err := tx.ExecContext(ctx, `UPDATE messages SET snippet=?,updated_at=? WHERE id=?`, item.snippet, now, item.id); err != nil {
+			return err
+		}
+	}
+	return tx.Commit()
+}
+
 func (a *App) migrateSendQueueMessageID(ctx context.Context) error {
 	rows, err := a.db.QueryContext(ctx, `PRAGMA table_info(send_queue)`)
 	if err != nil {
@@ -516,7 +916,7 @@ func (a *App) migratePermissionGroupLimits(ctx context.Context) error {
 	if hasLimits {
 		return nil
 	}
-	_, err = a.db.ExecContext(ctx, `ALTER TABLE permission_groups ADD COLUMN limits_json TEXT NOT NULL DEFAULT '{"maxAttachmentMb":25,"smtpDailyLimit":200,"smtpMinuteLimit":20,"imapMinuteLimit":200,"pop3MinuteLimit":150}'`)
+	_, err = a.db.ExecContext(ctx, `ALTER TABLE permission_groups ADD COLUMN limits_json TEXT NOT NULL DEFAULT '{"maxAttachmentMb":25,"maxMailboxCount":9,"smtpDailyLimit":200,"smtpMinuteLimit":20,"imapMinuteLimit":200,"pop3MinuteLimit":150}'`)
 	return err
 }
 
@@ -582,7 +982,7 @@ func (a *App) migrateLegacyBootstrapMailbox(ctx context.Context) error {
 			return err
 		}
 		for _, messageID := range messageIDs {
-			a.deleteMessageFiles(ctx, messageID)
+			a.deleteMessage(ctx, messageID)
 		}
 		if _, err := a.db.ExecContext(ctx, `DELETE FROM mailboxes WHERE id=?`, item.id); err != nil {
 			return err
@@ -714,6 +1114,129 @@ func (a *App) migrateUsersForTwoFactor(ctx context.Context) error {
 	return nil
 }
 
+func (a *App) migrateUserLoginNames(ctx context.Context) error {
+	rows, err := a.db.QueryContext(ctx, `PRAGMA table_info(users)`)
+	if err != nil {
+		return err
+	}
+	columns := map[string]bool{}
+	for rows.Next() {
+		var cid int
+		var name, typ string
+		var notnull int
+		var dflt any
+		var pk int
+		if err := rows.Scan(&cid, &name, &typ, &notnull, &dflt, &pk); err != nil {
+			rows.Close()
+			return err
+		}
+		columns[name] = true
+	}
+	if err := rows.Err(); err != nil {
+		rows.Close()
+		return err
+	}
+	if err := rows.Close(); err != nil {
+		return err
+	}
+	if !columns["login_name"] {
+		if _, err := a.db.ExecContext(ctx, `ALTER TABLE users ADD COLUMN login_name TEXT NOT NULL DEFAULT ''`); err != nil {
+			return err
+		}
+	}
+	type loginUser struct {
+		id        string
+		email     string
+		loginName string
+	}
+	userRows, err := a.db.QueryContext(ctx, `SELECT id,email,login_name FROM users ORDER BY created_at,id`)
+	if err != nil {
+		return err
+	}
+	items := []loginUser{}
+	localCounts := map[string]int{}
+	used := map[string]bool{}
+	for userRows.Next() {
+		var item loginUser
+		if err := userRows.Scan(&item.id, &item.email, &item.loginName); err != nil {
+			userRows.Close()
+			return err
+		}
+		item.email = normalizeEmail(item.email)
+		item.loginName = normalizeLoginName(item.loginName)
+		if item.loginName != "" {
+			used[item.loginName] = true
+		}
+		if strings.Contains(item.email, "@") {
+			localCounts[strings.SplitN(item.email, "@", 2)[0]]++
+		}
+		items = append(items, item)
+	}
+	if err := userRows.Err(); err != nil {
+		userRows.Close()
+		return err
+	}
+	if err := userRows.Close(); err != nil {
+		return err
+	}
+	now := a.now().UTC().Format(time.RFC3339Nano)
+	for _, item := range items {
+		if item.loginName != "" {
+			continue
+		}
+		candidate := item.email
+		if strings.Contains(item.email, "@") {
+			local := strings.SplitN(item.email, "@", 2)[0]
+			if localCounts[local] == 1 && !used[local] {
+				candidate = local
+			}
+		}
+		if candidate == "" {
+			candidate = normalizeLoginName(item.id)
+		}
+		base := candidate
+		for suffix := 2; used[candidate]; suffix++ {
+			candidate = fmt.Sprintf("%s-%d", base, suffix)
+		}
+		if _, err := a.db.ExecContext(ctx, `UPDATE users SET login_name=?, updated_at=? WHERE id=?`, candidate, now, item.id); err != nil {
+			return err
+		}
+		used[candidate] = true
+	}
+	_, err = a.db.ExecContext(ctx, `CREATE UNIQUE INDEX IF NOT EXISTS idx_users_login_name ON users(login_name) WHERE login_name <> ''`)
+	return err
+}
+
+func (a *App) migrateUserMailboxLimitOverride(ctx context.Context) error {
+	rows, err := a.db.QueryContext(ctx, `PRAGMA table_info(users)`)
+	if err != nil {
+		return err
+	}
+	defer rows.Close()
+	hasColumn := false
+	for rows.Next() {
+		var cid int
+		var name, typ string
+		var notnull int
+		var dflt any
+		var pk int
+		if err := rows.Scan(&cid, &name, &typ, &notnull, &dflt, &pk); err != nil {
+			return err
+		}
+		if name == "mailbox_limit_override" {
+			hasColumn = true
+		}
+	}
+	if err := rows.Err(); err != nil {
+		return err
+	}
+	if hasColumn {
+		return nil
+	}
+	_, err = a.db.ExecContext(ctx, `ALTER TABLE users ADD COLUMN mailbox_limit_override INTEGER`)
+	return err
+}
+
 func (a *App) migrateMessagesForUnregistered(ctx context.Context) error {
 	rows, err := a.db.QueryContext(ctx, `PRAGMA table_info(messages)`)
 	if err != nil {
@@ -887,12 +1410,25 @@ func (a *App) seed(ctx context.Context) error {
 	}
 	now := a.now().UTC().Format(time.RFC3339Nano)
 	userID := newID("usr")
+	if strings.TrimSpace(a.cfg.AdminUsername) != "" {
+		adminUsername, err := cleanUsername(a.cfg.AdminUsername)
+		if err != nil {
+			return fmt.Errorf("invalid admin username: %w", err)
+		}
+		if _, err := a.db.ExecContext(ctx, `INSERT INTO users(id,login_name,email,display_name,role,password_hash,disabled,created_at,updated_at)
+			VALUES(?,?,?,?,?,?,?,?,?)`, userID, adminUsername, adminUsername, "NewSzxcn Admin", "admin", string(passwordHash), 0, now, now); err != nil {
+			return err
+		}
+		a.log.Warn("created default administrator; change LANQIN_ADMIN_PASSWORD in production", "username", adminUsername)
+		return nil
+	}
 	adminEmail := normalizeEmail(a.cfg.AdminEmail)
 	if adminEmail == "" || !strings.Contains(adminEmail, "@") {
 		return errors.New("invalid admin email")
 	}
-	if _, err := a.db.ExecContext(ctx, `INSERT INTO users(id,email,display_name,role,password_hash,disabled,created_at,updated_at)
-		VALUES(?,?,?,?,?,?,?,?)`, userID, adminEmail, "LanQin Admin", "admin", string(passwordHash), 0, now, now); err != nil {
+	adminLoginName := normalizeLoginName(strings.SplitN(adminEmail, "@", 2)[0])
+	if _, err := a.db.ExecContext(ctx, `INSERT INTO users(id,login_name,email,display_name,role,password_hash,disabled,created_at,updated_at)
+		VALUES(?,?,?,?,?,?,?,?,?)`, userID, adminLoginName, adminEmail, "NewSzxcn Admin", "admin", string(passwordHash), 0, now, now); err != nil {
 		return err
 	}
 	a.log.Warn("created default administrator; change LANQIN_ADMIN_PASSWORD in production", "email", adminEmail)
@@ -927,6 +1463,11 @@ func (a *App) seed(ctx context.Context) error {
 }
 
 func (a *App) ensureConfiguredAdminSuperAdmin(ctx context.Context) error {
+	if adminUsername := normalizeLoginName(a.cfg.AdminUsername); adminUsername != "" && !strings.Contains(adminUsername, "@") {
+		_, err := a.db.ExecContext(ctx, `UPDATE users SET role='admin', disabled=0, updated_at=? WHERE login_name=?`,
+			a.now().UTC().Format(time.RFC3339Nano), adminUsername)
+		return err
+	}
 	adminEmail := normalizeEmail(a.cfg.AdminEmail)
 	if adminEmail == "" || !strings.Contains(adminEmail, "@") {
 		return nil
@@ -996,6 +1537,22 @@ func (a *App) createMailbox(ctx context.Context, userID, domainID, localPart, di
 }
 
 func (a *App) createMailboxWithPasswordHash(ctx context.Context, userID, domainID, localPart, displayName, passwordHash string, quotaMB int, status string) (string, error) {
+	tx, err := a.db.BeginTx(ctx, nil)
+	if err != nil {
+		return "", err
+	}
+	defer tx.Rollback()
+	id, err := a.createMailboxWithPasswordHashTx(ctx, tx, userID, domainID, localPart, displayName, passwordHash, quotaMB, status)
+	if err != nil {
+		return "", err
+	}
+	if err := tx.Commit(); err != nil {
+		return "", err
+	}
+	return id, nil
+}
+
+func (a *App) createMailboxWithPasswordHashTx(ctx context.Context, tx *sql.Tx, userID, domainID, localPart, displayName, passwordHash string, quotaMB int, status string) (string, error) {
 	localPart = normalizeLocalPart(localPart)
 	if localPart == "" {
 		return "", errors.New("invalid local part")
@@ -1007,7 +1564,7 @@ func (a *App) createMailboxWithPasswordHash(ctx context.Context, userID, domainI
 		status = "active"
 	}
 	var domain string
-	if err := a.db.QueryRowContext(ctx, `SELECT name FROM domains WHERE id=?`, domainID).Scan(&domain); err != nil {
+	if err := tx.QueryRowContext(ctx, `SELECT name FROM domains WHERE id=?`, domainID).Scan(&domain); err != nil {
 		return "", err
 	}
 	address := localPart + "@" + domain
@@ -1015,28 +1572,19 @@ func (a *App) createMailboxWithPasswordHash(ctx context.Context, userID, domainI
 		displayName = address
 	}
 
-	tx, err := a.db.BeginTx(ctx, nil)
-	if err != nil {
-		return "", err
-	}
-	defer tx.Rollback()
-
 	id := newID("mbx")
 	now := a.now().UTC().Format(time.RFC3339Nano)
-	_, err = tx.ExecContext(ctx, `INSERT INTO mailboxes(id,user_id,domain_id,local_part,address,display_name,password_hash,quota_mb,status,created_at,updated_at)
+	_, err := tx.ExecContext(ctx, `INSERT INTO mailboxes(id,user_id,domain_id,local_part,address,display_name,password_hash,quota_mb,status,created_at,updated_at)
 		VALUES(?,?,?,?,?,?,?,?,?,?,?)`, id, userID, domainID, localPart, address, displayName, passwordHash, quotaMB, status, now, now)
 	if err != nil {
 		return "", err
 	}
 	for _, f := range defaultFolderDefs() {
-		_, err = tx.ExecContext(ctx, `INSERT INTO folders(id,mailbox_id,name,role,created_at) VALUES(?,?,?,?,?)`, newID("fld"), id, f.name, f.role, now)
+		_, err = tx.ExecContext(ctx, `INSERT INTO folders(id,mailbox_id,name,role,sort_order,uid_validity,uid_next,highest_modseq,created_at) VALUES(?,?,?,?,?,?,?,?,?)`, newID("fld"), id, f.name, f.role, 0, a.newUIDValidity(), 1, 1, now)
 		if err != nil {
 			return "", err
 		}
 	}
-	if err := tx.Commit(); err != nil {
-		return "", err
-	}
 	return id, nil
 }
 
@@ -1046,7 +1594,7 @@ func (a *App) seedWelcomeMessage(ctx context.Context, mailboxID string) error {
 		return err
 	}
 	now := a.now().UTC()
-	subject := "欢迎使用 LanQin Email"
+	subject := "欢迎使用 NewSzxcn 邮箱"
 	bodyText := "你的自建邮箱 Webmail 已经初始化完成。请尽快修改默认管理员密码，并配置 MX/SPF/DKIM/DMARC。"
 	bodyHTML := "<p>你的自建邮箱 Webmail 已经初始化完成。</p><p>请尽快修改默认管理员密码，并配置 MX/SPF/DKIM/DMARC。</p>"
 	if tpl, err := a.mailTemplate(ctx, "welcome"); err == nil {
@@ -1066,7 +1614,7 @@ func (a *App) seedWelcomeMessage(ctx context.Context, mailboxID string) error {
 		MessageID:  fmt.Sprintf("<%s@lanqin.local>", newID("msg")),
 		Subject:    subject,
 		From:       "system@lanqin.local",
-		FromName:   "LanQin Email",
+		FromName:   "NewSzxcn 邮箱",
 		To:         []string{a.cfg.AdminEmail},
 		SentAt:     now,
 		ReceivedAt: now,

apps/api/internal/app/auth_handlers.go

@@ -11,6 +11,7 @@ import (
 
 func (a *App) handleLogin(w http.ResponseWriter, r *http.Request) {
 	var req struct {
+		LoginName      string `json:"loginName"`
 		Email          string `json:"email"`
 		Password       string `json:"password"`
 		TurnstileToken string `json:"turnstileToken"`
@@ -49,14 +50,24 @@ func (a *App) handleLogin(w http.ResponseWriter, r *http.Request) {
 		respondError(w, http.StatusUnauthorized, "人机验证失败，请重试")
 		return
 	}
-	email := normalizeEmail(req.Email)
-	user, passwordHash, err := a.userByEmail(r.Context(), email)
+	var loginName string
+	var err error
+	if strings.TrimSpace(req.LoginName) != "" {
+		loginName, err = cleanUsername(req.LoginName)
+	} else {
+		loginName, err = cleanLoginName(req.Email)
+	}
+	if err != nil {
+		respondError(w, http.StatusUnauthorized, "账号或密码错误")
+		return
+	}
+	user, passwordHash, err := a.userByEmail(r.Context(), loginName)
 	if err != nil || user.Disabled {
-		respondError(w, http.StatusUnauthorized, "邮箱或密码错误")
+		respondError(w, http.StatusUnauthorized, "账号或密码错误")
 		return
 	}
 	if err := bcrypt.CompareHashAndPassword([]byte(passwordHash), []byte(req.Password)); err != nil {
-		respondError(w, http.StatusUnauthorized, "邮箱或密码错误")
+		respondError(w, http.StatusUnauthorized, "账号或密码错误")
 		return
 	}
 	if a.cfg.TwoFactorEnabled && user.TwoFactorEnabled {
@@ -127,8 +138,8 @@ func (a *App) handleRegister(w http.ResponseWriter, r *http.Request) {
 	}
 	now := a.now().UTC().Format(time.RFC3339Nano)
 	userID := newID("usr")
-	if _, err := a.db.ExecContext(r.Context(), `INSERT INTO users(id,email,display_name,role,password_hash,disabled,created_at,updated_at)
-		VALUES(?,?,?,?,?,?,?,?)`, userID, email, displayName, "user", string(passwordHash), 0, now, now); err != nil {
+	if _, err := a.db.ExecContext(r.Context(), `INSERT INTO users(id,login_name,email,display_name,role,password_hash,disabled,created_at,updated_at)
+		VALUES(?,?,?,?,?,?,?,?,?)`, userID, email, email, displayName, "user", string(passwordHash), 0, now, now); err != nil {
 		if strings.Contains(strings.ToLower(err.Error()), "unique") {
 			respondError(w, http.StatusConflict, "该邮箱已被注册")
 			return

apps/api/internal/app/config.go

@@ -8,77 +8,115 @@ import (
 )
 
 type Config struct {
-	Addr                    string
-	DBPath                  string
-	DataDir                 string
-	CookieName              string
-	SessionTTLHours         int
-	AdminEmail              string
-	AdminPassword           string
-	PublicHostname          string
-	PublicBaseURL           string
-	SMTPHost                string
-	SMTPPort                string
-	SMTPUsername            string
-	SMTPPassword            string
-	SMTPRequireTLS          bool
-	SubmissionAddr          string
-	SubmissionTLSAddr       string
-	SubmissionMaxMessageMB  int
-	TLSCertFile             string
-	TLSKeyFile              string
-	MaildirRoot             string
-	MaildirScanSeconds      int
-	AllowInsecureHTTP       bool
-	OpenRegistration        bool
-	TwoFactorEnabled        bool
-	TurnstileEnabled        bool
-	TurnstileSiteKey        string
-	TurnstileSecretKey      string
-	CatchAllEnabled         bool
-	MailAutoRefresh         bool
-	MailRefreshSeconds      int
-	UserMailboxApplyEnabled bool
-	UserMailboxDomainIDs    string
-	ReservedMailboxPrefixes string
+	Addr                            string
+	AppVersion                      string
+	DBPath                          string
+	DataDir                         string
+	CookieName                      string
+	SessionTTLHours                 int
+	AdminUsername                   string
+	AdminEmail                      string
+	AdminPassword                   string
+	PublicHostname                  string
+	PublicBaseURL                   string
+	SMTPHost                        string
+	SMTPPort                        string
+	SMTPUsername                    string
+	SMTPPassword                    string
+	SMTPRequireTLS                  bool
+	SubmissionAddr                  string
+	SubmissionTLSAddr               string
+	SubmissionMaxMessageMB          int
+	TLSCertFile                     string
+	TLSKeyFile                      string
+	MaildirRoot                     string
+	MaildirScanSeconds              int
+	AllowInsecureHTTP               bool
+	OpenRegistration                bool
+	TwoFactorEnabled                bool
+	TurnstileEnabled                bool
+	TurnstileSiteKey                string
+	TurnstileSecretKey              string
+	CatchAllEnabled                 bool
+	MailAutoRefresh                 bool
+	MailRefreshSeconds              int
+	UserMailboxApplyEnabled         bool
+	UserMailboxDomainIDs            string
+	ReservedMailboxPrefixes         string
+	ExternalIMAPEnabled             bool
+	ExternalIMAPSecretKey           string
+	ExternalIMAPSyncSeconds         int
+	ExternalIMAPAllowPrivateHosts   bool
+	ExternalIMAPGmailClientID       string
+	ExternalIMAPGmailClientSecret   string
+	ExternalIMAPOutlookClientID     string
+	ExternalIMAPOutlookClientSecret string
+	MailTranslateEnabled            bool
+	MailTranslateMaxChars           int
+	DeliveryWebhookSecret           string
+	StatusWebhookURL                string
+	StatusWebhookSecret             string
+	StatusWebhookAllowPrivateHosts  bool
+	ReleaseAPIURL                   string
+	UpdateServiceURL                string
+	UpdateServiceToken              string
 }
 
 func LoadConfig() Config {
 	dataDir := getenv("LANQIN_DATA_DIR", "./data")
 	return Config{
-		Addr:                    getenv("LANQIN_ADDR", ":8080"),
-		DBPath:                  getenv("LANQIN_DB_PATH", filepath.Join(dataDir, "lanqin.db")),
-		DataDir:                 dataDir,
-		CookieName:              getenv("LANQIN_COOKIE_NAME", "lanqin_session"),
-		SessionTTLHours:         getenvInt("LANQIN_SESSION_TTL_HOURS", 24*7),
-		AdminEmail:              strings.ToLower(getenv("LANQIN_ADMIN_EMAIL", "admin@lanqin.local")),
-		AdminPassword:           getenv("LANQIN_ADMIN_PASSWORD", ""),
-		PublicHostname:          getenv("LANQIN_PUBLIC_HOSTNAME", "mail.lanqin.local"),
-		PublicBaseURL:           getenv("LANQIN_PUBLIC_BASE_URL", "http://localhost:5173"),
-		SMTPHost:                getenv("LANQIN_SMTP_HOST", ""),
-		SMTPPort:                getenv("LANQIN_SMTP_PORT", "25"),
-		SMTPUsername:            getenv("LANQIN_SMTP_USERNAME", ""),
-		SMTPPassword:            getenv("LANQIN_SMTP_PASSWORD", ""),
-		SMTPRequireTLS:          getenvBool("LANQIN_SMTP_REQUIRE_TLS", false),
-		SubmissionAddr:          getenv("LANQIN_SUBMISSION_ADDR", ""),
-		SubmissionTLSAddr:       getenv("LANQIN_SUBMISSION_TLS_ADDR", ""),
-		SubmissionMaxMessageMB:  getenvInt("LANQIN_SUBMISSION_MAX_MESSAGE_MB", 35),
-		TLSCertFile:             getenv("LANQIN_TLS_CERT_FILE", ""),
-		TLSKeyFile:              getenv("LANQIN_TLS_KEY_FILE", ""),
-		MaildirRoot:             getenv("LANQIN_MAILDIR_ROOT", ""),
-		MaildirScanSeconds:      getenvInt("LANQIN_MAILDIR_SCAN_SECONDS", 30),
-		AllowInsecureHTTP:       getenvBool("LANQIN_ALLOW_INSECURE_HTTP", true),
-		OpenRegistration:        getenvBool("LANQIN_OPEN_REGISTRATION", false),
-		TwoFactorEnabled:        getenvBool("LANQIN_TWO_FACTOR_ENABLED", false),
-		TurnstileEnabled:        getenvBool("LANQIN_TURNSTILE_ENABLED", false),
-		TurnstileSiteKey:        getenv("LANQIN_TURNSTILE_SITE_KEY", ""),
-		TurnstileSecretKey:      getenv("LANQIN_TURNSTILE_SECRET_KEY", ""),
-		CatchAllEnabled:         getenvBool("LANQIN_CATCH_ALL_ENABLED", false),
-		MailAutoRefresh:         getenvBool("LANQIN_MAIL_AUTO_REFRESH", true),
-		MailRefreshSeconds:      getenvInt("LANQIN_MAIL_REFRESH_SECONDS", 30),
-		UserMailboxApplyEnabled: getenvBool("LANQIN_USER_MAILBOX_APPLY_ENABLED", false),
-		UserMailboxDomainIDs:    getenv("LANQIN_USER_MAILBOX_DOMAIN_IDS", ""),
-		ReservedMailboxPrefixes: getenv("LANQIN_RESERVED_MAILBOX_PREFIXES", "admin,postmaster,abuse,hostmaster,webmaster,root,security,noreply,no-reply,mailer-daemon"),
+		Addr:                            getenv("LANQIN_ADDR", ":8080"),
+		AppVersion:                      getenv("LANQIN_APP_VERSION", BuildVersion),
+		DBPath:                          getenv("LANQIN_DB_PATH", filepath.Join(dataDir, "lanqin.db")),
+		DataDir:                         dataDir,
+		CookieName:                      getenv("LANQIN_COOKIE_NAME", "lanqin_session"),
+		SessionTTLHours:                 getenvInt("LANQIN_SESSION_TTL_HOURS", 24*7),
+		AdminUsername:                   normalizeLoginName(getenv("LANQIN_ADMIN_USERNAME", "")),
+		AdminEmail:                      strings.ToLower(getenv("LANQIN_ADMIN_EMAIL", "admin@lanqin.local")),
+		AdminPassword:                   getenv("LANQIN_ADMIN_PASSWORD", ""),
+		PublicHostname:                  getenv("LANQIN_PUBLIC_HOSTNAME", "mail.lanqin.local"),
+		PublicBaseURL:                   getenv("LANQIN_PUBLIC_BASE_URL", "http://localhost:5173"),
+		SMTPHost:                        getenv("LANQIN_SMTP_HOST", ""),
+		SMTPPort:                        getenv("LANQIN_SMTP_PORT", "25"),
+		SMTPUsername:                    getenv("LANQIN_SMTP_USERNAME", ""),
+		SMTPPassword:                    getenv("LANQIN_SMTP_PASSWORD", ""),
+		SMTPRequireTLS:                  getenvBool("LANQIN_SMTP_REQUIRE_TLS", false),
+		SubmissionAddr:                  getenv("LANQIN_SUBMISSION_ADDR", ""),
+		SubmissionTLSAddr:               getenv("LANQIN_SUBMISSION_TLS_ADDR", ""),
+		SubmissionMaxMessageMB:          getenvInt("LANQIN_SUBMISSION_MAX_MESSAGE_MB", 35),
+		TLSCertFile:                     getenv("LANQIN_TLS_CERT_FILE", ""),
+		TLSKeyFile:                      getenv("LANQIN_TLS_KEY_FILE", ""),
+		MaildirRoot:                     getenv("LANQIN_MAILDIR_ROOT", ""),
+		MaildirScanSeconds:              getenvInt("LANQIN_MAILDIR_SCAN_SECONDS", 30),
+		AllowInsecureHTTP:               getenvBool("LANQIN_ALLOW_INSECURE_HTTP", true),
+		OpenRegistration:                getenvBool("LANQIN_OPEN_REGISTRATION", false),
+		TwoFactorEnabled:                getenvBool("LANQIN_TWO_FACTOR_ENABLED", false),
+		TurnstileEnabled:                getenvBool("LANQIN_TURNSTILE_ENABLED", false),
+		TurnstileSiteKey:                getenv("LANQIN_TURNSTILE_SITE_KEY", ""),
+		TurnstileSecretKey:              getenv("LANQIN_TURNSTILE_SECRET_KEY", ""),
+		CatchAllEnabled:                 getenvBool("LANQIN_CATCH_ALL_ENABLED", false),
+		MailAutoRefresh:                 getenvBool("LANQIN_MAIL_AUTO_REFRESH", true),
+		MailRefreshSeconds:              getenvInt("LANQIN_MAIL_REFRESH_SECONDS", 30),
+		UserMailboxApplyEnabled:         getenvBool("LANQIN_USER_MAILBOX_APPLY_ENABLED", false),
+		UserMailboxDomainIDs:            getenv("LANQIN_USER_MAILBOX_DOMAIN_IDS", ""),
+		ReservedMailboxPrefixes:         getenv("LANQIN_RESERVED_MAILBOX_PREFIXES", "admin,postmaster,abuse,hostmaster,webmaster,root,security,noreply,no-reply,mailer-daemon"),
+		ExternalIMAPEnabled:             getenvBool("LANQIN_EXTERNAL_IMAP_ENABLED", false),
+		ExternalIMAPSecretKey:           getenv("LANQIN_EXTERNAL_IMAP_SECRET_KEY", ""),
+		ExternalIMAPSyncSeconds:         getenvInt("LANQIN_EXTERNAL_IMAP_SYNC_SECONDS", 300),
+		ExternalIMAPAllowPrivateHosts:   getenvBool("LANQIN_EXTERNAL_IMAP_ALLOW_PRIVATE_HOSTS", false),
+		ExternalIMAPGmailClientID:       getenv("LANQIN_EXTERNAL_IMAP_GMAIL_CLIENT_ID", ""),
+		ExternalIMAPGmailClientSecret:   getenv("LANQIN_EXTERNAL_IMAP_GMAIL_CLIENT_SECRET", ""),
+		ExternalIMAPOutlookClientID:     getenv("LANQIN_EXTERNAL_IMAP_OUTLOOK_CLIENT_ID", ""),
+		ExternalIMAPOutlookClientSecret: getenv("LANQIN_EXTERNAL_IMAP_OUTLOOK_CLIENT_SECRET", ""),
+		MailTranslateEnabled:            getenvBool("LANQIN_MAIL_TRANSLATE_ENABLED", true),
+		MailTranslateMaxChars:           getenvInt("LANQIN_MAIL_TRANSLATE_MAX_CHARS", 8000),
+		DeliveryWebhookSecret:           getenv("LANQIN_DELIVERY_WEBHOOK_SECRET", ""),
+		StatusWebhookURL:                getenv("LANQIN_STATUS_WEBHOOK_URL", ""),
+		StatusWebhookSecret:             getenv("LANQIN_STATUS_WEBHOOK_SECRET", ""),
+		StatusWebhookAllowPrivateHosts:  getenvBool("LANQIN_STATUS_WEBHOOK_ALLOW_PRIVATE_HOSTS", false),
+		ReleaseAPIURL:                   getenv("LANQIN_RELEASE_API_URL", "https://api.github.com/repos/zxyszx/NewSzxcn-Email/releases/latest"),
+		UpdateServiceURL:                getenv("LANQIN_UPDATE_SERVICE_URL", ""),
+		UpdateServiceToken:              getenv("LANQIN_UPDATE_SERVICE_TOKEN", ""),
 	}
 }
 

apps/api/internal/app/forwarding_delivery.go

@@ -0,0 +1,239 @@
+package app
+
+import (
+	"bytes"
+	"context"
+	"crypto/sha256"
+	"encoding/hex"
+	"fmt"
+	"os"
+	"strings"
+	"unicode"
+)
+
+const forwardingHeaderName = "X-LanQin-Forwarded-By"
+
+func (a *App) processInboundForwarding(ctx context.Context, messageID, mailboxID string, raw []byte) {
+	targets, userID, mailboxAddress, err := a.inboundForwardingTargets(ctx, mailboxID)
+	if err != nil {
+		a.log.Warn("failed to load forwarding target", "message", messageID, "mailbox", mailboxID, "error", err)
+		return
+	}
+	if len(targets) == 0 || userID == "" || mailboxAddress == "" {
+		return
+	}
+	self := normalizeEmail(mailboxAddress)
+	filteredTargets := make([]string, 0, len(targets))
+	for _, target := range targets {
+		if normalizeEmail(target) == self {
+			continue
+		}
+		filteredTargets = append(filteredTargets, target)
+	}
+	targets = dedupeEmails(filteredTargets)
+	if len(targets) == 0 {
+		return
+	}
+	if len(raw) == 0 {
+		raw, err = a.forwardingRawMessage(ctx, messageID)
+		if err != nil {
+			a.log.Warn("failed to load raw message for forwarding", "message", messageID, "error", err)
+			return
+		}
+	}
+	if hasForwardingHeader(raw) {
+		a.log.Warn("skip forwarding message that already has LanQin forwarding header", "message", messageID, "mailbox", mailboxID)
+		return
+	}
+	forwarded := addForwardingHeaders(raw, mailboxAddress, a.cfg.PublicHostname)
+	var rfcMessageID string
+	_ = a.db.QueryRowContext(ctx, `SELECT message_id FROM messages WHERE id=?`, messageID).Scan(&rfcMessageID)
+	if strings.TrimSpace(rfcMessageID) == "" {
+		rfcMessageID = messageID
+	}
+	queueID, err := a.enqueueSend(ctx, sendQueueInput{
+		UserID:        userID,
+		MailboxID:     mailboxID,
+		SentMessageID: messageID,
+		MessageID:     rfcMessageID,
+		Source:        sendSourceForwarding,
+		MailFrom:      mailboxAddress,
+		HeaderFrom:    mailboxAddress,
+		Recipients:    targets,
+		MIMEBytes:     forwarded,
+		Now:           a.now().UTC(),
+	})
+	if err != nil {
+		a.log.Warn("failed to enqueue inbound forwarding", "message", messageID, "mailbox", mailboxID, "targets", strings.Join(targets, ","), "error", err)
+		return
+	}
+	if queueID == "" {
+		a.log.Warn("forwarding target configured but SMTP sending is not configured", "message", messageID, "mailbox", mailboxID, "targets", strings.Join(targets, ","))
+	}
+}
+
+func (a *App) processRuleForwarding(ctx context.Context, messageID, mailboxID string, action MailRuleAction) error {
+	var userID, mailboxAddress string
+	if err := a.db.QueryRowContext(ctx, `SELECT user_id,address FROM mailboxes WHERE id=? AND status='active'`, mailboxID).Scan(&userID, &mailboxAddress); err != nil {
+		return err
+	}
+	targets, err := a.cleanForwardingTargets(ctx, userID, splitRuleForwardTargets(action.Value))
+	if err != nil {
+		return err
+	}
+	self := normalizeEmail(mailboxAddress)
+	filteredTargets := make([]string, 0, len(targets))
+	for _, target := range targets {
+		if normalizeEmail(target) == self {
+			continue
+		}
+		filteredTargets = append(filteredTargets, target)
+	}
+	targets = dedupeEmails(filteredTargets)
+	if len(targets) == 0 {
+		return nil
+	}
+	raw, err := a.forwardingRawMessage(ctx, messageID)
+	if err != nil {
+		return err
+	}
+	if hasForwardingHeader(raw) {
+		a.log.Warn("skip rule forwarding message that already has LanQin forwarding header", "message", messageID, "mailbox", mailboxID)
+		return nil
+	}
+	forwarded := addForwardingHeaders(raw, mailboxAddress, a.cfg.PublicHostname)
+	var rfcMessageID string
+	_ = a.db.QueryRowContext(ctx, `SELECT message_id FROM messages WHERE id=?`, messageID).Scan(&rfcMessageID)
+	if strings.TrimSpace(rfcMessageID) == "" {
+		rfcMessageID = messageID
+	}
+	queueID, err := a.enqueueSend(ctx, sendQueueInput{
+		UserID:        userID,
+		MailboxID:     mailboxID,
+		SentMessageID: messageID,
+		MessageID:     ruleForwardQueueMessageID(rfcMessageID, targets),
+		Source:        sendSourceRuleForwarding,
+		MailFrom:      mailboxAddress,
+		HeaderFrom:    mailboxAddress,
+		Recipients:    targets,
+		MIMEBytes:     forwarded,
+		Now:           a.now().UTC(),
+	})
+	if err != nil {
+		return err
+	}
+	if queueID == "" {
+		a.log.Warn("rule forwarding target configured but SMTP sending is not configured", "message", messageID, "mailbox", mailboxID, "targets", strings.Join(targets, ","))
+	}
+	return nil
+}
+
+func (a *App) inboundForwardingTargets(ctx context.Context, mailboxID string) (targetEmails []string, userID, mailboxAddress string, err error) {
+	var mailboxTarget, mailboxTargetsJSON, accountTarget, accountTargetsJSON string
+	err = a.db.QueryRowContext(ctx, `SELECT mb.user_id,mb.address,COALESCE(mfs.target_email,''),COALESCE(mfs.target_emails,'[]'),COALESCE(afs.target_email,''),COALESCE(afs.target_emails,'[]')
+		FROM mailboxes mb
+		LEFT JOIN mailbox_forwarding_settings mfs ON mfs.mailbox_id=mb.id
+		LEFT JOIN account_forwarding_settings afs ON afs.user_id=mb.user_id
+		WHERE mb.id=? AND mb.status='active'`, mailboxID).Scan(&userID, &mailboxAddress, &mailboxTarget, &mailboxTargetsJSON, &accountTarget, &accountTargetsJSON)
+	if err != nil {
+		return nil, "", "", err
+	}
+	targets := forwardingTargetsFromStored(mailboxTarget, mailboxTargetsJSON)
+	if len(targets) == 0 {
+		targets = forwardingTargetsFromStored(accountTarget, accountTargetsJSON)
+	}
+	if len(targets) == 0 {
+		return nil, userID, mailboxAddress, nil
+	}
+	verifiedTargets := make([]string, 0, len(targets))
+	for _, target := range targets {
+		verified, err := a.forwardingEmailVerified(ctx, userID, target)
+		if err != nil {
+			return nil, "", "", err
+		}
+		if verified {
+			verifiedTargets = append(verifiedTargets, target)
+		}
+	}
+	return dedupeEmails(verifiedTargets), userID, mailboxAddress, nil
+}
+
+func (a *App) forwardingRawMessage(ctx context.Context, messageID string) ([]byte, error) {
+	msg, err := a.storedMessageByID(ctx, messageID)
+	if err != nil {
+		return nil, err
+	}
+	if strings.TrimSpace(msg.RawPath) != "" {
+		if ok, err := a.pathIsUnderMaildirRoot(msg.RawPath); err == nil && ok {
+			if raw, err := os.ReadFile(msg.RawPath); err == nil {
+				return raw, nil
+			}
+		}
+	}
+	attachments, err := a.attachmentInputsForMessage(ctx, messageID)
+	if err != nil {
+		return nil, err
+	}
+	return BuildMIME(MIMEMessage{
+		From:        msg.From,
+		FromName:    msg.FromName,
+		To:          msg.To,
+		CC:          msg.CC,
+		BCC:         msg.BCC,
+		Subject:     msg.Subject,
+		Text:        msg.BodyText,
+		HTML:        msg.BodyHTML,
+		MessageID:   msg.MessageID,
+		Date:        messageDate(msg),
+		Attachments: attachments,
+	})
+}
+
+func splitRuleForwardTargets(value string) []string {
+	return strings.FieldsFunc(value, func(r rune) bool {
+		return unicode.IsSpace(r) || r == ',' || r == '，' || r == ';' || r == '；'
+	})
+}
+
+func ruleForwardQueueMessageID(messageID string, targets []string) string {
+	base := strings.TrimSpace(messageID)
+	if base == "" {
+		base = newID("ruleforward")
+	}
+	sum := sha256.Sum256([]byte(strings.Join(dedupeEmails(targets), ",")))
+	return base + "#rule-forward-" + hex.EncodeToString(sum[:])[:12]
+}
+
+func hasForwardingHeader(raw []byte) bool {
+	header := raw
+	if idx := bytes.Index(raw, []byte("\r\n\r\n")); idx >= 0 {
+		header = raw[:idx]
+	} else if idx := bytes.Index(raw, []byte("\n\n")); idx >= 0 {
+		header = raw[:idx]
+	}
+	return strings.Contains(strings.ToLower(string(header)), strings.ToLower(forwardingHeaderName)+":")
+}
+
+func addForwardingHeaders(raw []byte, mailboxAddress, hostname string) []byte {
+	hostname = strings.TrimSpace(hostname)
+	if hostname == "" {
+		hostname = "lanqin.local"
+	}
+	header := fmt.Sprintf("%s: %s\r\nX-LanQin-Forwarded-For: %s\r\n", forwardingHeaderName, hostname, normalizeEmail(mailboxAddress))
+	if idx := bytes.Index(raw, []byte("\r\n\r\n")); idx >= 0 {
+		out := make([]byte, 0, len(raw)+len(header))
+		out = append(out, raw[:idx]...)
+		out = append(out, []byte("\r\n"+header)...)
+		out = append(out, raw[idx+2:]...)
+		return out
+	}
+	if idx := bytes.Index(raw, []byte("\n\n")); idx >= 0 {
+		lfHeader := strings.ReplaceAll(header, "\r\n", "\n")
+		out := make([]byte, 0, len(raw)+len(lfHeader))
+		out = append(out, raw[:idx]...)
+		out = append(out, []byte("\n"+lfHeader)...)
+		out = append(out, raw[idx+1:]...)
+		return out
+	}
+	return append([]byte(header+"\r\n"), raw...)
+}

apps/api/internal/app/forwarding_handlers.go

@@ -0,0 +1,634 @@
+package app
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	"fmt"
+	"net/http"
+	"net/url"
+	"strings"
+	"time"
+
+	"github.com/go-chi/chi/v5"
+)
+
+const forwardingVerificationTTL = 24 * time.Hour
+
+type ForwardingVerifiedEmail struct {
+	ID                    string     `json:"id"`
+	Email                 string     `json:"email"`
+	Verified              bool       `json:"verified"`
+	CreatedAt             time.Time  `json:"createdAt"`
+	VerifiedAt            *time.Time `json:"verifiedAt,omitempty"`
+	VerificationSentAt    *time.Time `json:"verificationSentAt,omitempty"`
+	VerificationExpiresAt *time.Time `json:"verificationExpiresAt,omitempty"`
+	DeliveryStatus        string     `json:"deliveryStatus,omitempty"`
+	DeliveryError         string     `json:"deliveryError,omitempty"`
+}
+
+type MailboxForwardingRule struct {
+	MailboxID    string   `json:"mailboxId"`
+	TargetEmail  string   `json:"targetEmail"`
+	TargetEmails []string `json:"targetEmails"`
+}
+
+type ForwardingSettings struct {
+	VerifiedEmails      []ForwardingVerifiedEmail `json:"verifiedEmails"`
+	AccountTargetEmail  string                    `json:"accountTargetEmail"`
+	AccountTargetEmails []string                  `json:"accountTargetEmails"`
+	MailboxRules        []MailboxForwardingRule   `json:"mailboxRules"`
+}
+
+func (a *App) handleForwardingSettings(w http.ResponseWriter, r *http.Request) {
+	user := currentUser(r)
+	settings, err := a.forwardingSettings(r.Context(), user.ID)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load forwarding settings")
+		return
+	}
+	respondJSON(w, http.StatusOK, settings)
+}
+
+func (a *App) handleAddForwardingVerifiedEmail(w http.ResponseWriter, r *http.Request) {
+	user := currentUser(r)
+	var req struct {
+		Email string `json:"email"`
+	}
+	if err := decodeJSON(r, &req); err != nil {
+		badRequest(w, err)
+		return
+	}
+	email, ok := a.cleanForwardingVerificationEmail(w, r, user.ID, req.Email)
+	if !ok {
+		return
+	}
+	id, verified, err := a.forwardingVerifiedEmailState(r.Context(), user.ID, email)
+	if err != nil && !errors.Is(err, sql.ErrNoRows) {
+		respondError(w, http.StatusInternalServerError, "failed to load verified email")
+		return
+	}
+	if verified {
+		settings, err := a.forwardingSettings(r.Context(), user.ID)
+		if err != nil {
+			respondError(w, http.StatusInternalServerError, "failed to load forwarding settings")
+			return
+		}
+		respondJSON(w, http.StatusOK, settings)
+		return
+	}
+	if id == "" {
+		id = newID("fwd")
+	}
+	if err := a.issueForwardingVerification(r.Context(), user.ID, id, email, errors.Is(err, sql.ErrNoRows)); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to save verified email")
+		return
+	}
+	settings, err := a.forwardingSettings(r.Context(), user.ID)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load forwarding settings")
+		return
+	}
+	respondJSON(w, http.StatusCreated, settings)
+}
+
+func (a *App) handleResendForwardingVerifiedEmail(w http.ResponseWriter, r *http.Request) {
+	user := currentUser(r)
+	id := strings.TrimSpace(chi.URLParam(r, "id"))
+	if id == "" {
+		respondError(w, http.StatusNotFound, "verified email not found")
+		return
+	}
+	var email string
+	var verified int
+	err := a.db.QueryRowContext(r.Context(), `SELECT email,verified FROM forwarding_verified_emails WHERE id=? AND user_id=?`, id, user.ID).Scan(&email, &verified)
+	if errors.Is(err, sql.ErrNoRows) {
+		respondError(w, http.StatusNotFound, "verified email not found")
+		return
+	}
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load verified email")
+		return
+	}
+	if intBool(verified) {
+		settings, err := a.forwardingSettings(r.Context(), user.ID)
+		if err != nil {
+			respondError(w, http.StatusInternalServerError, "failed to load forwarding settings")
+			return
+		}
+		respondJSON(w, http.StatusOK, settings)
+		return
+	}
+	if err := a.issueForwardingVerification(r.Context(), user.ID, id, email, false); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to resend verification email")
+		return
+	}
+	settings, err := a.forwardingSettings(r.Context(), user.ID)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load forwarding settings")
+		return
+	}
+	respondJSON(w, http.StatusOK, settings)
+}
+
+func (a *App) handleVerifyForwardingEmail(w http.ResponseWriter, r *http.Request) {
+	token := strings.TrimSpace(r.URL.Query().Get("token"))
+	if token == "" {
+		a.renderForwardingVerificationPage(w, http.StatusBadRequest, false, "", "验证链接无效")
+		return
+	}
+	var id, email string
+	var verified int
+	var expiresRaw sql.NullString
+	err := a.db.QueryRowContext(r.Context(), `SELECT id,email,verified,verification_expires_at FROM forwarding_verified_emails WHERE verification_token_hash=?`, hashToken(token)).Scan(&id, &email, &verified, &expiresRaw)
+	if errors.Is(err, sql.ErrNoRows) {
+		a.renderForwardingVerificationPage(w, http.StatusBadRequest, false, "", "验证链接无效或已使用")
+		return
+	}
+	if err != nil {
+		a.renderForwardingVerificationPage(w, http.StatusInternalServerError, false, "", "验证失败，请稍后重试")
+		return
+	}
+	if intBool(verified) {
+		a.renderForwardingVerificationPage(w, http.StatusOK, true, email, "该邮箱已经验证完成")
+		return
+	}
+	if expiresRaw.Valid && expiresRaw.String != "" && parseTime(expiresRaw.String).Before(a.now().UTC()) {
+		a.renderForwardingVerificationPage(w, http.StatusBadRequest, false, email, "验证链接已过期，请回到设置页重新发送")
+		return
+	}
+	now := a.now().UTC().Format(time.RFC3339Nano)
+	_, err = a.db.ExecContext(r.Context(), `UPDATE forwarding_verified_emails
+		SET verified=1,verified_at=?,delivery_status='verified',delivery_error='',updated_at=?
+		WHERE id=?`, now, now, id)
+	if err != nil {
+		a.renderForwardingVerificationPage(w, http.StatusInternalServerError, false, email, "验证失败，请稍后重试")
+		return
+	}
+	a.renderForwardingVerificationPage(w, http.StatusOK, true, email, "验证完成，可以回到设置页选择此转发目标")
+}
+
+func (a *App) handleDeleteForwardingVerifiedEmail(w http.ResponseWriter, r *http.Request) {
+	user := currentUser(r)
+	id := strings.TrimSpace(chi.URLParam(r, "id"))
+	if id == "" {
+		respondError(w, http.StatusNotFound, "verified email not found")
+		return
+	}
+	var email string
+	if err := a.db.QueryRowContext(r.Context(), `SELECT email FROM forwarding_verified_emails WHERE id=? AND user_id=?`, id, user.ID).Scan(&email); err != nil {
+		respondError(w, http.StatusNotFound, "verified email not found")
+		return
+	}
+	tx, err := a.db.BeginTx(r.Context(), nil)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to start transaction")
+		return
+	}
+	defer tx.Rollback()
+	now := a.now().UTC().Format(time.RFC3339Nano)
+	if _, err := tx.ExecContext(r.Context(), `DELETE FROM forwarding_verified_emails WHERE id=? AND user_id=?`, id, user.ID); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to delete verified email")
+		return
+	}
+	if err := a.removeForwardingTargetFromSettings(r.Context(), tx, user.ID, email, now); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to update mailbox forwarding")
+		return
+	}
+	if err := tx.Commit(); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to save forwarding settings")
+		return
+	}
+	settings, err := a.forwardingSettings(r.Context(), user.ID)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load forwarding settings")
+		return
+	}
+	respondJSON(w, http.StatusOK, settings)
+}
+
+func (a *App) handleUpdateAccountForwarding(w http.ResponseWriter, r *http.Request) {
+	user := currentUser(r)
+	var req struct {
+		TargetEmail  string   `json:"targetEmail"`
+		TargetEmails []string `json:"targetEmails"`
+	}
+	if err := decodeJSON(r, &req); err != nil {
+		badRequest(w, err)
+		return
+	}
+	targets, err := a.cleanForwardingTargets(r.Context(), user.ID, forwardingTargetsFromRequest(req.TargetEmail, req.TargetEmails))
+	if err != nil {
+		badRequest(w, err)
+		return
+	}
+	target := firstForwardingTarget(targets)
+	now := a.now().UTC().Format(time.RFC3339Nano)
+	_, err = a.db.ExecContext(r.Context(), `INSERT INTO account_forwarding_settings(user_id,target_email,target_emails,updated_at)
+		VALUES(?,?,?,?)
+		ON CONFLICT(user_id) DO UPDATE SET target_email=excluded.target_email,target_emails=excluded.target_emails,updated_at=excluded.updated_at`,
+		user.ID, target, jsonEncode(targets), now)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to save account forwarding")
+		return
+	}
+	settings, err := a.forwardingSettings(r.Context(), user.ID)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load forwarding settings")
+		return
+	}
+	respondJSON(w, http.StatusOK, settings)
+}
+
+func (a *App) handleUpdateMailboxForwarding(w http.ResponseWriter, r *http.Request) {
+	user := currentUser(r)
+	mailboxID := strings.TrimSpace(chi.URLParam(r, "id"))
+	if mailboxID == "" {
+		respondError(w, http.StatusNotFound, "mailbox not found")
+		return
+	}
+	if ok, err := a.userOwnsMailboxID(r.Context(), user.ID, mailboxID); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to check mailbox")
+		return
+	} else if !ok {
+		respondError(w, http.StatusNotFound, "mailbox not found")
+		return
+	}
+	var req struct {
+		TargetEmail  string   `json:"targetEmail"`
+		TargetEmails []string `json:"targetEmails"`
+	}
+	if err := decodeJSON(r, &req); err != nil {
+		badRequest(w, err)
+		return
+	}
+	targets, err := a.cleanForwardingTargets(r.Context(), user.ID, forwardingTargetsFromRequest(req.TargetEmail, req.TargetEmails))
+	if err != nil {
+		badRequest(w, err)
+		return
+	}
+	target := firstForwardingTarget(targets)
+	if len(targets) == 0 {
+		if _, err := a.db.ExecContext(r.Context(), `DELETE FROM mailbox_forwarding_settings WHERE mailbox_id=?`, mailboxID); err != nil {
+			respondError(w, http.StatusInternalServerError, "failed to save mailbox forwarding")
+			return
+		}
+	} else {
+		now := a.now().UTC().Format(time.RFC3339Nano)
+		if _, err := a.db.ExecContext(r.Context(), `INSERT INTO mailbox_forwarding_settings(mailbox_id,target_email,target_emails,updated_at)
+			VALUES(?,?,?,?)
+			ON CONFLICT(mailbox_id) DO UPDATE SET target_email=excluded.target_email,target_emails=excluded.target_emails,updated_at=excluded.updated_at`,
+			mailboxID, target, jsonEncode(targets), now); err != nil {
+			respondError(w, http.StatusInternalServerError, "failed to save mailbox forwarding")
+			return
+		}
+	}
+	settings, err := a.forwardingSettings(r.Context(), user.ID)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load forwarding settings")
+		return
+	}
+	respondJSON(w, http.StatusOK, settings)
+}
+
+func (a *App) forwardingSettings(ctx context.Context, userID string) (ForwardingSettings, error) {
+	settings := ForwardingSettings{
+		VerifiedEmails: []ForwardingVerifiedEmail{},
+		MailboxRules:   []MailboxForwardingRule{},
+	}
+	rows, err := a.db.QueryContext(ctx, `SELECT fve.id,fve.email,fve.verified,fve.created_at,
+			fve.verified_at,fve.verification_sent_at,fve.verification_expires_at,
+			COALESCE(NULLIF(sq.status,''), fve.delivery_status),
+			COALESCE(NULLIF(sq.last_error,''), fve.delivery_error)
+		FROM forwarding_verified_emails fve
+		LEFT JOIN send_queue sq ON sq.id=fve.delivery_queue_id
+		WHERE fve.user_id=?
+		ORDER BY fve.created_at DESC,fve.email`, userID)
+	if err != nil {
+		return settings, err
+	}
+	defer rows.Close()
+	for rows.Next() {
+		var item ForwardingVerifiedEmail
+		var verified int
+		var created string
+		var verifiedAt, sentAt, expiresAt sql.NullString
+		if err := rows.Scan(&item.ID, &item.Email, &verified, &created, &verifiedAt, &sentAt, &expiresAt, &item.DeliveryStatus, &item.DeliveryError); err != nil {
+			return settings, err
+		}
+		item.Verified = intBool(verified)
+		item.CreatedAt = parseTime(created)
+		item.VerifiedAt = nullableTime(verifiedAt)
+		item.VerificationSentAt = nullableTime(sentAt)
+		item.VerificationExpiresAt = nullableTime(expiresAt)
+		settings.VerifiedEmails = append(settings.VerifiedEmails, item)
+	}
+	if err := rows.Err(); err != nil {
+		return settings, err
+	}
+	var accountTarget, accountTargetsJSON string
+	err = a.db.QueryRowContext(ctx, `SELECT target_email,target_emails FROM account_forwarding_settings WHERE user_id=?`, userID).Scan(&accountTarget, &accountTargetsJSON)
+	if err != nil && !errors.Is(err, sql.ErrNoRows) {
+		return settings, err
+	}
+	settings.AccountTargetEmails = forwardingTargetsFromStored(accountTarget, accountTargetsJSON)
+	settings.AccountTargetEmail = firstForwardingTarget(settings.AccountTargetEmails)
+	rows, err = a.db.QueryContext(ctx, `SELECT mfs.mailbox_id,mfs.target_email,mfs.target_emails
+		FROM mailbox_forwarding_settings mfs
+		JOIN mailboxes mb ON mb.id=mfs.mailbox_id
+		WHERE mb.user_id=? AND (mfs.target_email<>'' OR mfs.target_emails<>'[]')
+		ORDER BY mb.address`, userID)
+	if err != nil {
+		return settings, err
+	}
+	defer rows.Close()
+	for rows.Next() {
+		var item MailboxForwardingRule
+		var target, targetsJSON string
+		if err := rows.Scan(&item.MailboxID, &target, &targetsJSON); err != nil {
+			return settings, err
+		}
+		item.TargetEmails = forwardingTargetsFromStored(target, targetsJSON)
+		item.TargetEmail = firstForwardingTarget(item.TargetEmails)
+		if len(item.TargetEmails) > 0 {
+			settings.MailboxRules = append(settings.MailboxRules, item)
+		}
+	}
+	return settings, rows.Err()
+}
+
+func (a *App) issueForwardingVerification(ctx context.Context, userID, id, email string, insert bool) error {
+	now := a.now().UTC()
+	expires := now.Add(forwardingVerificationTTL)
+	token := randomToken()
+	nowRaw := now.Format(time.RFC3339Nano)
+	expiresRaw := expires.Format(time.RFC3339Nano)
+	if insert {
+		if _, err := a.db.ExecContext(ctx, `INSERT INTO forwarding_verified_emails(id,user_id,email,verified,verified_at,verification_token_hash,verification_sent_at,verification_expires_at,delivery_queue_id,delivery_status,delivery_error,created_at,updated_at)
+			VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?)`,
+			id, userID, email, 0, nil, hashToken(token), nowRaw, expiresRaw, "", sendQueueStatusQueued, "", nowRaw, nowRaw); err != nil {
+			return err
+		}
+	} else {
+		if _, err := a.db.ExecContext(ctx, `UPDATE forwarding_verified_emails
+			SET verified=0,verified_at=NULL,verification_token_hash=?,verification_sent_at=?,verification_expires_at=?,delivery_queue_id='',delivery_status=?,delivery_error='',updated_at=?
+			WHERE id=? AND user_id=?`,
+			hashToken(token), nowRaw, expiresRaw, sendQueueStatusQueued, nowRaw, id, userID); err != nil {
+			return err
+		}
+	}
+	queueID, err := a.sendForwardingVerificationEmail(ctx, userID, email, token, now)
+	if err != nil {
+		_, _ = a.db.ExecContext(ctx, `UPDATE forwarding_verified_emails SET delivery_status=?,delivery_error=?,updated_at=? WHERE id=? AND user_id=?`, sendQueueStatusFailed, err.Error(), nowRaw, id, userID)
+		return nil
+	}
+	if queueID != "" {
+		_, _ = a.db.ExecContext(ctx, `UPDATE forwarding_verified_emails SET delivery_queue_id=?,delivery_status=?,delivery_error='',updated_at=? WHERE id=? AND user_id=?`, queueID, sendQueueStatusQueued, nowRaw, id, userID)
+	}
+	return nil
+}
+
+func (a *App) sendForwardingVerificationEmail(ctx context.Context, userID, targetEmail, token string, now time.Time) (string, error) {
+	if strings.TrimSpace(a.cfg.SMTPHost) == "" {
+		return "", errors.New("SMTP 未配置，无法发送验证邮件")
+	}
+	mb, err := a.primaryMailboxForUser(ctx, userID)
+	if err != nil {
+		return "", err
+	}
+	fromDomain := domainPart(mb.Address)
+	from := "noreply@" + fromDomain
+	link := a.forwardingVerificationURL(token)
+	text := "邮箱转发验证\n\n您正在将此邮箱添加为邮件转发目标地址。请打开以下链接完成验证：\n" + link + "\n\n此链接 24 小时内有效。如果您没有发起此操作，请忽略此邮件。"
+	html := `<div style="font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Arial,sans-serif;color:#111827;line-height:1.6;padding:32px 24px">
+<div style="max-width:640px;margin:0 auto">
+<h1 style="font-size:28px;line-height:1.25;margin:0 0 28px;font-weight:700">邮箱转发验证</h1>
+<p style="font-size:17px;margin:0 0 28px">您正在将此邮箱添加为邮件转发目标地址。请点击下方按钮完成验证：</p>
+<p style="text-align:center;margin:0 0 34px"><a href="` + htmlEscape(link) + `" style="display:inline-block;background:#2563eb;color:#ffffff;text-decoration:none;border-radius:8px;padding:14px 38px;font-size:18px;font-weight:700">确认验证</a></p>
+<p style="font-size:15px;color:#6b7280;margin:0 0 12px">如果按钮无法点击，请复制以下链接到浏览器：</p>
+<p style="font-size:15px;color:#6b7280;word-break:break-all;margin:0 0 28px">` + htmlEscape(link) + `</p>
+<p style="font-size:15px;color:#9ca3af;margin:0">此链接 24 小时内有效。如果您没有发起此操作，请忽略此邮件。</p>
+</div></div>`
+	messageID := fmt.Sprintf("<%s@%s>", newID("fwdverify"), fromDomain)
+	mimeBytes, err := BuildMIME(MIMEMessage{From: from, FromName: "noreply", To: []string{targetEmail}, Subject: "邮箱转发验证", Text: text, HTML: html, MessageID: messageID, Date: now})
+	if err != nil {
+		return "", err
+	}
+	return a.enqueueSend(ctx, sendQueueInput{
+		UserID:     userID,
+		MailboxID:  mb.ID,
+		MessageID:  messageID,
+		Source:     sendSourceForwardingVerification,
+		MailFrom:   from,
+		HeaderFrom: from,
+		Recipients: []string{targetEmail},
+		MIMEBytes:  mimeBytes,
+		Now:        now,
+	})
+}
+
+func (a *App) forwardingVerificationURL(token string) string {
+	base := strings.TrimRight(strings.TrimSpace(a.cfg.PublicBaseURL), "/")
+	if base == "" {
+		base = "https://" + strings.Trim(strings.TrimSpace(a.cfg.PublicHostname), "/")
+	}
+	return base + "/api/verify-email?token=" + url.QueryEscape(token)
+}
+
+func (a *App) renderForwardingVerificationPage(w http.ResponseWriter, status int, ok bool, email, message string) {
+	title := "邮箱转发验证"
+	heading := "验证失败"
+	color := "#dc2626"
+	if ok {
+		heading = "验证完成"
+		color = "#2563eb"
+	}
+	w.Header().Set("Content-Type", "text/html; charset=utf-8")
+	w.WriteHeader(status)
+	_, _ = fmt.Fprintf(w, `<!doctype html><html lang="zh-CN"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><title>%s</title></head><body style="margin:0;background:#f8fafc;color:#0f172a;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Arial,sans-serif"><main style="min-height:100vh;display:grid;place-items:center;padding:24px"><section style="width:min(100%%,520px);background:white;border:1px solid #e2e8f0;border-radius:14px;padding:34px 30px;box-shadow:0 18px 45px rgba(15,23,42,.08)"><h1 style="margin:0 0 14px;font-size:28px">%s</h1><p style="margin:0 0 10px;font-size:17px;color:#475569">%s</p><p style="margin:0 0 26px;font-size:15px;color:#64748b">%s</p><a href="/" style="display:inline-block;border-radius:8px;background:%s;color:white;text-decoration:none;padding:12px 18px;font-weight:700">返回邮箱</a></section></main></body></html>`,
+		title, heading, htmlEscape(message), htmlEscape(email), color)
+}
+
+func (a *App) cleanForwardingVerificationEmail(w http.ResponseWriter, r *http.Request, userID, value string) (string, bool) {
+	email := normalizeEmail(value)
+	if email == "" || !strings.Contains(email, "@") {
+		badRequest(w, errors.New("邮箱地址无效"))
+		return "", false
+	}
+	if owns, err := a.userOwnsMailboxAddress(r.Context(), userID, email); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to check mailbox")
+		return "", false
+	} else if owns {
+		badRequest(w, errors.New("不能把当前账号邮箱作为转发验证邮箱"))
+		return "", false
+	}
+	return email, true
+}
+
+func (a *App) forwardingVerifiedEmailState(ctx context.Context, userID, email string) (id string, verified bool, err error) {
+	var verifiedInt int
+	err = a.db.QueryRowContext(ctx, `SELECT id,verified FROM forwarding_verified_emails WHERE user_id=? AND email=?`, userID, normalizeEmail(email)).Scan(&id, &verifiedInt)
+	return id, intBool(verifiedInt), err
+}
+
+func (a *App) primaryMailboxForUser(ctx context.Context, userID string) (Mailbox, error) {
+	var mb Mailbox
+	var created string
+	err := a.db.QueryRowContext(ctx, `SELECT id,user_id,domain_id,local_part,address,display_name,quota_mb,status,created_at
+		FROM mailboxes WHERE user_id=? AND status='active' ORDER BY created_at,id LIMIT 1`, userID).
+		Scan(&mb.ID, &mb.UserID, &mb.DomainID, &mb.LocalPart, &mb.Address, &mb.DisplayName, &mb.QuotaMB, &mb.Status, &created)
+	if errors.Is(err, sql.ErrNoRows) {
+		return mb, errors.New("当前账号没有可用于发送验证邮件的邮箱")
+	}
+	mb.CreatedAt = parseTime(created)
+	return mb, err
+}
+
+func (a *App) forwardingEmailVerified(ctx context.Context, userID, email string) (bool, error) {
+	var count int
+	err := a.db.QueryRowContext(ctx, `SELECT COUNT(1) FROM forwarding_verified_emails WHERE user_id=? AND email=? AND verified=1`, userID, normalizeEmail(email)).Scan(&count)
+	if err != nil {
+		return false, err
+	}
+	return count > 0, nil
+}
+
+func forwardingTargetsFromRequest(targetEmail string, targetEmails []string) []string {
+	if len(targetEmails) > 0 {
+		return targetEmails
+	}
+	if strings.TrimSpace(targetEmail) == "" {
+		return nil
+	}
+	return []string{targetEmail}
+}
+
+func (a *App) cleanForwardingTargets(ctx context.Context, userID string, values []string) ([]string, error) {
+	targets := make([]string, 0, len(values))
+	seen := map[string]bool{}
+	for _, value := range values {
+		value = strings.TrimSpace(value)
+		if value == "" || strings.EqualFold(value, "none") {
+			continue
+		}
+		target := normalizeEmail(value)
+		if target == "" || !strings.Contains(target, "@") {
+			return nil, errors.New("转发邮箱无效")
+		}
+		if seen[target] {
+			continue
+		}
+		ok, err := a.forwardingEmailVerified(ctx, userID, target)
+		if err != nil {
+			return nil, err
+		}
+		if !ok {
+			return nil, errors.New("请先完成邮箱验证")
+		}
+		seen[target] = true
+		targets = append(targets, target)
+	}
+	return targets, nil
+}
+
+func forwardingTargetsFromStored(targetEmail, targetsJSON string) []string {
+	targets := dedupeEmails(jsonDecodeSlice(targetsJSON))
+	if len(targets) > 0 {
+		return targets
+	}
+	target := normalizeEmail(targetEmail)
+	if target == "" {
+		return nil
+	}
+	return []string{target}
+}
+
+func firstForwardingTarget(targets []string) string {
+	if len(targets) == 0 {
+		return ""
+	}
+	return targets[0]
+}
+
+func removeForwardingTarget(targets []string, email string) []string {
+	email = normalizeEmail(email)
+	next := make([]string, 0, len(targets))
+	for _, target := range targets {
+		if normalizeEmail(target) == email {
+			continue
+		}
+		next = append(next, normalizeEmail(target))
+	}
+	return dedupeEmails(next)
+}
+
+func (a *App) removeForwardingTargetFromSettings(ctx context.Context, tx *sql.Tx, userID, email, now string) error {
+	var accountTarget, accountTargetsJSON string
+	if err := tx.QueryRowContext(ctx, `SELECT target_email,target_emails FROM account_forwarding_settings WHERE user_id=?`, userID).Scan(&accountTarget, &accountTargetsJSON); err != nil && !errors.Is(err, sql.ErrNoRows) {
+		return err
+	} else if err == nil {
+		targets := removeForwardingTarget(forwardingTargetsFromStored(accountTarget, accountTargetsJSON), email)
+		if _, err := tx.ExecContext(ctx, `UPDATE account_forwarding_settings SET target_email=?,target_emails=?,updated_at=? WHERE user_id=?`, firstForwardingTarget(targets), jsonEncode(targets), now, userID); err != nil {
+			return err
+		}
+	}
+
+	rows, err := tx.QueryContext(ctx, `SELECT mfs.mailbox_id,mfs.target_email,mfs.target_emails
+		FROM mailbox_forwarding_settings mfs
+		JOIN mailboxes mb ON mb.id=mfs.mailbox_id
+		WHERE mb.user_id=?`, userID)
+	if err != nil {
+		return err
+	}
+	type mailboxRow struct {
+		id          string
+		target      string
+		targetsJSON string
+	}
+	var items []mailboxRow
+	for rows.Next() {
+		var item mailboxRow
+		if err := rows.Scan(&item.id, &item.target, &item.targetsJSON); err != nil {
+			rows.Close()
+			return err
+		}
+		items = append(items, item)
+	}
+	if err := rows.Close(); err != nil {
+		return err
+	}
+	if err := rows.Err(); err != nil {
+		return err
+	}
+	for _, item := range items {
+		targets := removeForwardingTarget(forwardingTargetsFromStored(item.target, item.targetsJSON), email)
+		if len(targets) == 0 {
+			if _, err := tx.ExecContext(ctx, `DELETE FROM mailbox_forwarding_settings WHERE mailbox_id=?`, item.id); err != nil {
+				return err
+			}
+			continue
+		}
+		if _, err := tx.ExecContext(ctx, `UPDATE mailbox_forwarding_settings SET target_email=?,target_emails=?,updated_at=? WHERE mailbox_id=?`, firstForwardingTarget(targets), jsonEncode(targets), now, item.id); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (a *App) userOwnsMailboxID(ctx context.Context, userID, mailboxID string) (bool, error) {
+	var count int
+	err := a.db.QueryRowContext(ctx, `SELECT COUNT(1) FROM mailboxes WHERE id=? AND user_id=? AND status='active'`, mailboxID, userID).Scan(&count)
+	if err != nil {
+		return false, err
+	}
+	return count > 0, nil
+}
+
+func (a *App) userOwnsMailboxAddress(ctx context.Context, userID, address string) (bool, error) {
+	var count int
+	err := a.db.QueryRowContext(ctx, `SELECT COUNT(1) FROM mailboxes WHERE user_id=? AND address=? AND status='active'`, userID, normalizeEmail(address)).Scan(&count)
+	if err != nil {
+		return false, err
+	}
+	return count > 0, nil
+}

apps/api/internal/app/imap_metadata.go

@@ -0,0 +1,274 @@
+package app
+
+import (
+	"context"
+	"database/sql"
+	"math"
+	"time"
+)
+
+type imapMetadata struct {
+	UID    int64
+	ModSeq int64
+}
+
+func (a *App) migrateIMAPMetadata(ctx context.Context) error {
+	if err := a.ensureTableColumn(ctx, "folders", "uid_validity", `ALTER TABLE folders ADD COLUMN uid_validity INTEGER NOT NULL DEFAULT 0`); err != nil {
+		return err
+	}
+	if err := a.ensureTableColumn(ctx, "folders", "uid_next", `ALTER TABLE folders ADD COLUMN uid_next INTEGER NOT NULL DEFAULT 1`); err != nil {
+		return err
+	}
+	if err := a.ensureTableColumn(ctx, "folders", "highest_modseq", `ALTER TABLE folders ADD COLUMN highest_modseq INTEGER NOT NULL DEFAULT 1`); err != nil {
+		return err
+	}
+	if err := a.ensureTableColumn(ctx, "messages", "imap_uid", `ALTER TABLE messages ADD COLUMN imap_uid INTEGER NOT NULL DEFAULT 0`); err != nil {
+		return err
+	}
+	if err := a.ensureTableColumn(ctx, "messages", "imap_modseq", `ALTER TABLE messages ADD COLUMN imap_modseq INTEGER NOT NULL DEFAULT 1`); err != nil {
+		return err
+	}
+	if _, err := a.db.ExecContext(ctx, `UPDATE folders SET uid_validity=? WHERE uid_validity=0`, a.newUIDValidity()); err != nil {
+		return err
+	}
+	if _, err := a.db.ExecContext(ctx, `UPDATE folders SET uid_next=1 WHERE uid_next<1`); err != nil {
+		return err
+	}
+	if _, err := a.db.ExecContext(ctx, `UPDATE folders SET highest_modseq=1 WHERE highest_modseq<1`); err != nil {
+		return err
+	}
+	if err := a.backfillIMAPUIDs(ctx); err != nil {
+		return err
+	}
+	_, err := a.db.ExecContext(ctx, `CREATE UNIQUE INDEX IF NOT EXISTS idx_messages_folder_imap_uid ON messages(folder_id, imap_uid) WHERE folder_id IS NOT NULL AND imap_uid > 0`)
+	return err
+}
+
+func (a *App) migrateFolderSortOrder(ctx context.Context) error {
+	if err := a.ensureTableColumn(ctx, "folders", "sort_order", `ALTER TABLE folders ADD COLUMN sort_order INTEGER NOT NULL DEFAULT 0`); err != nil {
+		return err
+	}
+	rows, err := a.db.QueryContext(ctx, `SELECT id FROM folders WHERE lower(name) NOT IN ('inbox','sent','drafts','archive','spam','trash') ORDER BY mailbox_id, created_at, name, id`)
+	if err != nil {
+		return err
+	}
+	var folderIDs []string
+	for rows.Next() {
+		var id string
+		if err := rows.Scan(&id); err != nil {
+			rows.Close()
+			return err
+		}
+		folderIDs = append(folderIDs, id)
+	}
+	if err := rows.Err(); err != nil {
+		rows.Close()
+		return err
+	}
+	rows.Close()
+	order := customFolderDefaultSortOrderBase + 1
+	for _, id := range folderIDs {
+		if _, err := a.db.ExecContext(ctx, `UPDATE folders SET sort_order=? WHERE id=? AND sort_order=0`, order, id); err != nil {
+			return err
+		}
+		order++
+	}
+	return nil
+}
+
+func (a *App) ensureTableColumn(ctx context.Context, table, column, alterSQL string) error {
+	rows, err := a.db.QueryContext(ctx, `PRAGMA table_info(`+table+`)`)
+	if err != nil {
+		return err
+	}
+	defer rows.Close()
+	for rows.Next() {
+		var cid int
+		var name, typ string
+		var notNull int
+		var dflt any
+		var pk int
+		if err := rows.Scan(&cid, &name, &typ, &notNull, &dflt, &pk); err != nil {
+			return err
+		}
+		if name == column {
+			return nil
+		}
+	}
+	if err := rows.Err(); err != nil {
+		return err
+	}
+	_, err = a.db.ExecContext(ctx, alterSQL)
+	return err
+}
+
+func (a *App) backfillIMAPUIDs(ctx context.Context) error {
+	rows, err := a.db.QueryContext(ctx, `SELECT id FROM folders ORDER BY created_at,id`)
+	if err != nil {
+		return err
+	}
+	var folderIDs []string
+	for rows.Next() {
+		var folderID string
+		if err := rows.Scan(&folderID); err != nil {
+			rows.Close()
+			return err
+		}
+		folderIDs = append(folderIDs, folderID)
+	}
+	if err := rows.Err(); err != nil {
+		rows.Close()
+		return err
+	}
+	if err := rows.Close(); err != nil {
+		return err
+	}
+	for _, folderID := range folderIDs {
+		if err := a.backfillFolderIMAPUIDs(ctx, folderID); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (a *App) backfillFolderIMAPUIDs(ctx context.Context, folderID string) error {
+	rows, err := a.db.QueryContext(ctx, `SELECT id FROM messages WHERE folder_id=? AND imap_uid=0 ORDER BY created_at,id`, folderID)
+	if err != nil {
+		return err
+	}
+	var messageIDs []string
+	for rows.Next() {
+		var messageID string
+		if err := rows.Scan(&messageID); err != nil {
+			rows.Close()
+			return err
+		}
+		messageIDs = append(messageIDs, messageID)
+	}
+	if err := rows.Err(); err != nil {
+		rows.Close()
+		return err
+	}
+	if err := rows.Close(); err != nil {
+		return err
+	}
+	for _, messageID := range messageIDs {
+		meta, err := a.nextIMAPMetadata(ctx, a.db, folderID)
+		if err != nil {
+			return err
+		}
+		if _, err := a.db.ExecContext(ctx, `UPDATE messages SET imap_uid=?,imap_modseq=? WHERE id=?`, meta.UID, meta.ModSeq, messageID); err != nil {
+			return err
+		}
+	}
+	var maxUID, maxModSeq int64
+	if err := a.db.QueryRowContext(ctx, `SELECT COALESCE(MAX(imap_uid),0),COALESCE(MAX(imap_modseq),1) FROM messages WHERE folder_id=?`, folderID).Scan(&maxUID, &maxModSeq); err != nil {
+		return err
+	}
+	_, err = a.db.ExecContext(ctx, `UPDATE folders SET uid_next=MAX(uid_next,?),highest_modseq=MAX(highest_modseq,?) WHERE id=?`, maxUID+1, maxModSeq, folderID)
+	return err
+}
+
+func (a *App) newUIDValidity() int64 {
+	value := a.now().UTC().Unix()
+	if value <= 0 {
+		return time.Now().UTC().Unix()
+	}
+	return value
+}
+
+func (a *App) nextIMAPMetadata(ctx context.Context, db dbExecutor, folderID string) (imapMetadata, error) {
+	if folderID == "" {
+		return imapMetadata{}, nil
+	}
+	rowDB, ok := db.(dbQueryer)
+	if !ok {
+		return imapMetadata{}, nil
+	}
+	var nextUID, highestModSeq int64
+	err := rowDB.QueryRowContext(ctx, `SELECT uid_next,highest_modseq FROM folders WHERE id=?`, folderID).Scan(&nextUID, &highestModSeq)
+	if err != nil {
+		return imapMetadata{}, err
+	}
+	if nextUID < 1 {
+		nextUID = 1
+	}
+	nextModSeq := highestModSeq + 1
+	if nextModSeq < 1 {
+		nextModSeq = 1
+	}
+	if _, err := db.ExecContext(ctx, `UPDATE folders SET uid_next=?,highest_modseq=MAX(highest_modseq,?) WHERE id=?`, nextUID+1, nextModSeq, folderID); err != nil {
+		return imapMetadata{}, err
+	}
+	return imapMetadata{UID: nextUID, ModSeq: nextModSeq}, nil
+}
+
+func (a *App) bumpFolderModSeq(ctx context.Context, folderID string) (int64, error) {
+	return a.bumpFolderModSeqWithDB(ctx, a.db, folderID)
+}
+
+func (a *App) bumpFolderModSeqWithDB(ctx context.Context, db dbExecutor, folderID string) (int64, error) {
+	if folderID == "" {
+		return 0, nil
+	}
+	rowDB, ok := db.(dbQueryer)
+	if !ok {
+		return 0, nil
+	}
+	var current int64
+	if err := rowDB.QueryRowContext(ctx, `SELECT highest_modseq FROM folders WHERE id=?`, folderID).Scan(&current); err != nil {
+		if err == sql.ErrNoRows {
+			return 0, nil
+		}
+		return 0, err
+	}
+	next := current + 1
+	if next < 1 || next == math.MaxInt64 {
+		next = current
+	}
+	if _, err := db.ExecContext(ctx, `UPDATE folders SET highest_modseq=MAX(highest_modseq,?) WHERE id=?`, next, folderID); err != nil {
+		return 0, err
+	}
+	return next, nil
+}
+
+func (a *App) touchMessageIMAPModSeq(ctx context.Context, messageID string) error {
+	var folderID sql.NullString
+	if err := a.db.QueryRowContext(ctx, `SELECT folder_id FROM messages WHERE id=?`, messageID).Scan(&folderID); err != nil {
+		return err
+	}
+	if !folderID.Valid || folderID.String == "" {
+		return nil
+	}
+	modSeq, err := a.bumpFolderModSeq(ctx, folderID.String)
+	if err != nil {
+		return err
+	}
+	if modSeq == 0 {
+		return nil
+	}
+	_, err = a.db.ExecContext(ctx, `UPDATE messages SET imap_modseq=? WHERE id=?`, modSeq, messageID)
+	return err
+}
+
+func (a *App) updateMessageModSeq(ctx context.Context, messageID string, folderID string) (int64, error) {
+	if folderID == "" {
+		var dbFolderID sql.NullString
+		if err := a.db.QueryRowContext(ctx, `SELECT folder_id FROM messages WHERE id=?`, messageID).Scan(&dbFolderID); err != nil {
+			return 0, err
+		}
+		if !dbFolderID.Valid || dbFolderID.String == "" {
+			return 0, nil
+		}
+		folderID = dbFolderID.String
+	}
+	modSeq, err := a.bumpFolderModSeq(ctx, folderID)
+	if err != nil {
+		return 0, err
+	}
+	if modSeq == 0 {
+		return 0, nil
+	}
+	_, err = a.db.ExecContext(ctx, `UPDATE messages SET imap_modseq=? WHERE id=?`, modSeq, messageID)
+	return modSeq, err
+}

apps/api/internal/app/mail_transfer_handlers.go

@@ -0,0 +1,351 @@
+package app
+
+import (
+	"archive/zip"
+	"bufio"
+	"bytes"
+	"context"
+	"database/sql"
+	"errors"
+	"fmt"
+	"io"
+	"mime/multipart"
+	"net/http"
+	"os"
+	"path/filepath"
+	"regexp"
+	"strings"
+)
+
+const maxMailImportBytes int64 = 256 << 20
+
+var exportFilenameUnsafe = regexp.MustCompile(`[^a-zA-Z0-9._-]+`)
+
+func (a *App) handleExportMail(w http.ResponseWriter, r *http.Request) {
+	ids, err := a.exportMessageIDs(r)
+	if err != nil {
+		if errors.Is(err, sql.ErrNoRows) {
+			respondError(w, http.StatusNotFound, "mailbox or label not found")
+			return
+		}
+		if errors.Is(err, errSystemAdminRequired) {
+			respondError(w, http.StatusForbidden, "system admin required")
+			return
+		}
+		badRequest(w, err)
+		return
+	}
+
+	filename := fmt.Sprintf("mail-export-%s.zip", a.now().UTC().Format("20060102-150405"))
+	w.Header().Set("Content-Type", "application/zip")
+	w.Header().Set("Content-Disposition", fmt.Sprintf(`attachment; filename="%s"`, filename))
+	w.Header().Set("Cache-Control", "no-store")
+
+	zw := zip.NewWriter(w)
+	usedNames := make(map[string]int, len(ids))
+	for index, id := range ids {
+		raw, subject, err := a.rawMessageForExport(r.Context(), id)
+		if err != nil {
+			_ = zw.Close()
+			return
+		}
+		entryName := uniqueExportFilename(exportMessageFilename(subject, id, index), usedNames)
+		entry, err := zw.CreateHeader(&zip.FileHeader{Name: entryName, Method: zip.Deflate})
+		if err != nil {
+			_ = zw.Close()
+			return
+		}
+		if _, err := entry.Write(raw); err != nil {
+			_ = zw.Close()
+			return
+		}
+	}
+	_ = zw.Close()
+}
+
+var errSystemAdminRequired = errors.New("system admin required")
+
+func (a *App) exportMessageIDs(r *http.Request) ([]string, error) {
+	user := currentUser(r)
+	if user == nil {
+		return nil, errors.New("no user")
+	}
+	view := strings.ToLower(strings.TrimSpace(r.URL.Query().Get("view")))
+	mailboxID := strings.TrimSpace(r.URL.Query().Get("mailboxId"))
+	where := []string{}
+	args := []any{}
+
+	if view == "unknown" {
+		if user.Role != "admin" {
+			return nil, errSystemAdminRequired
+		}
+		where = append(where, "m.mailbox_id IS NULL")
+	} else {
+		where = append(where, "EXISTS (SELECT 1 FROM mailboxes owner_mb WHERE owner_mb.id=m.mailbox_id AND owner_mb.user_id=? AND owner_mb.status='active')")
+		args = append(args, user.ID)
+		if mailboxID != "" && !isAllMailboxID(mailboxID) {
+			if _, err := a.mailboxForCurrentUserWithID(r, mailboxID); err != nil {
+				return nil, err
+			}
+			where = append(where, "m.mailbox_id=?")
+			args = append(args, mailboxID)
+		}
+		switch view {
+		case "", "folder":
+			folder := strings.TrimSpace(r.URL.Query().Get("folder"))
+			if folder == "" {
+				folder = "Inbox"
+			}
+			normalized, err := normalizeFolderNameForUser(folder)
+			if err != nil {
+				return nil, err
+			}
+			where = append(where, "f.name=?")
+			args = append(args, normalized)
+		case "starred":
+			where = append(where, "m.is_starred=1")
+		case "label":
+			labelID := strings.TrimSpace(r.URL.Query().Get("labelId"))
+			if labelID == "" || !a.labelBelongsToUser(r.Context(), labelID, user.ID) {
+				return nil, sql.ErrNoRows
+			}
+			where = append(where, "EXISTS (SELECT 1 FROM message_labels ml WHERE ml.message_id=m.id AND ml.label_id=?)")
+			args = append(args, labelID)
+		default:
+			return nil, errors.New("unsupported mail view")
+		}
+	}
+
+	rows, err := a.db.QueryContext(r.Context(), `SELECT m.id FROM messages m LEFT JOIN folders f ON f.id=m.folder_id WHERE `+strings.Join(where, " AND ")+` ORDER BY m.received_at DESC,m.id`, args...)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	ids := []string{}
+	for rows.Next() {
+		var id string
+		if err := rows.Scan(&id); err != nil {
+			return nil, err
+		}
+		ids = append(ids, id)
+	}
+	return ids, rows.Err()
+}
+
+func (a *App) rawMessageForExport(ctx context.Context, id string) ([]byte, string, error) {
+	msg, err := a.storedMessageByID(ctx, id)
+	if err != nil {
+		return nil, "", err
+	}
+	if msg.RawPath != "" {
+		if ok, pathErr := a.pathIsUnderMaildirRoot(msg.RawPath); pathErr == nil && ok {
+			if raw, readErr := os.ReadFile(msg.RawPath); readErr == nil {
+				return raw, msg.Subject, nil
+			}
+		}
+	}
+	attachments, err := a.attachmentInputsForMessage(ctx, id)
+	if err != nil {
+		return nil, "", err
+	}
+	raw, err := BuildMIME(MIMEMessage{
+		From: msg.From, FromName: msg.FromName, To: msg.To, CC: msg.CC, BCC: msg.BCC,
+		Subject: msg.Subject, Text: msg.BodyText, HTML: msg.BodyHTML, MessageID: msg.MessageID,
+		Date: messageDate(msg), Attachments: attachments,
+	})
+	return raw, msg.Subject, err
+}
+
+func exportMessageFilename(subject, id string, index int) string {
+	name := exportFilenameUnsafe.ReplaceAllString(strings.TrimSpace(subject), "-")
+	name = strings.Trim(name, ".-_")
+	if name == "" {
+		name = "message"
+	}
+	if len(name) > 80 {
+		name = name[:80]
+	}
+	return fmt.Sprintf("%04d-%s-%s.eml", index+1, name, id)
+}
+
+func uniqueExportFilename(name string, used map[string]int) string {
+	used[name]++
+	if used[name] == 1 {
+		return name
+	}
+	base := strings.TrimSuffix(name, filepath.Ext(name))
+	return fmt.Sprintf("%s-%d%s", base, used[name], filepath.Ext(name))
+}
+
+func (a *App) handleImportMail(w http.ResponseWriter, r *http.Request) {
+	r.Body = http.MaxBytesReader(w, r.Body, maxMailImportBytes)
+	if err := r.ParseMultipartForm(maxMailImportBytes); err != nil {
+		respondError(w, http.StatusRequestEntityTooLarge, "import is too large")
+		return
+	}
+	if r.MultipartForm != nil {
+		defer r.MultipartForm.RemoveAll()
+	}
+	mb, err := a.mailboxForCurrentUserWithID(r, r.FormValue("mailboxId"))
+	if err != nil {
+		respondError(w, http.StatusNotFound, "mailbox not found")
+		return
+	}
+	folderName := strings.TrimSpace(r.FormValue("folder"))
+	if folderName == "" {
+		folderName = "Inbox"
+	}
+	folderName, err = normalizeFolderNameForUser(folderName)
+	if err != nil {
+		badRequest(w, err)
+		return
+	}
+	folderID, err := a.ensureFolder(r.Context(), mb.ID, folderName)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load folder")
+		return
+	}
+	files := r.MultipartForm.File["files"]
+	if len(files) == 0 {
+		files = r.MultipartForm.File["file"]
+	}
+	if len(files) == 0 {
+		badRequest(w, errors.New("at least one EML or MBOX file is required"))
+		return
+	}
+
+	imported, skipped := 0, 0
+	problems := []string{}
+	maxMessageBytes := int64(a.cfg.SubmissionMaxMessageMB) * 1024 * 1024
+	if maxMessageBytes <= 0 {
+		maxMessageBytes = 35 * 1024 * 1024
+	}
+	for _, header := range files {
+		messages, fileErr := readImportFile(header, maxMessageBytes)
+		if fileErr != nil {
+			skipped++
+			problems = appendImportProblem(problems, fmt.Sprintf("%s: %v", header.Filename, fileErr))
+			continue
+		}
+		for _, raw := range messages {
+			if err := a.importRawMessage(r.Context(), mb, folderID, raw); err != nil {
+				skipped++
+				problems = appendImportProblem(problems, fmt.Sprintf("%s: %v", header.Filename, err))
+				continue
+			}
+			imported++
+		}
+	}
+	if imported == 0 && len(problems) > 0 {
+		badRequest(w, errors.New(problems[0]))
+		return
+	}
+	respondJSON(w, http.StatusOK, map[string]any{"ok": true, "imported": imported, "skipped": skipped, "errors": problems})
+}
+
+func readImportFile(header *multipart.FileHeader, maxMessageBytes int64) ([][]byte, error) {
+	ext := strings.ToLower(filepath.Ext(header.Filename))
+	if ext != ".eml" && ext != ".mbox" {
+		return nil, errors.New("only .eml and .mbox files are supported")
+	}
+	file, err := header.Open()
+	if err != nil {
+		return nil, err
+	}
+	defer file.Close()
+	if ext == ".eml" {
+		raw, err := io.ReadAll(io.LimitReader(file, maxMessageBytes+1))
+		if err != nil {
+			return nil, err
+		}
+		if int64(len(raw)) > maxMessageBytes {
+			return nil, fmt.Errorf("message exceeds %d MB", maxMessageBytes/(1024*1024))
+		}
+		if len(bytes.TrimSpace(raw)) == 0 {
+			return nil, errors.New("message is empty")
+		}
+		return [][]byte{raw}, nil
+	}
+	return parseMBOX(file, maxMessageBytes)
+}
+
+func parseMBOX(reader io.Reader, maxMessageBytes int64) ([][]byte, error) {
+	scanner := bufio.NewScanner(reader)
+	bufferSize := int(maxMessageBytes + 1024)
+	if bufferSize < 64*1024 {
+		bufferSize = 64 * 1024
+	}
+	scanner.Buffer(make([]byte, 64*1024), bufferSize)
+	var current bytes.Buffer
+	messages := [][]byte{}
+	seenSeparator := false
+	flush := func() error {
+		raw := bytes.TrimSpace(current.Bytes())
+		current.Reset()
+		if len(raw) == 0 {
+			return nil
+		}
+		if int64(len(raw)) > maxMessageBytes {
+			return fmt.Errorf("message exceeds %d MB", maxMessageBytes/(1024*1024))
+		}
+		messages = append(messages, append([]byte(nil), raw...))
+		return nil
+	}
+	for scanner.Scan() {
+		line := scanner.Bytes()
+		if bytes.HasPrefix(line, []byte("From ")) {
+			if seenSeparator {
+				if err := flush(); err != nil {
+					return nil, err
+				}
+			}
+			seenSeparator = true
+			continue
+		}
+		if bytes.HasPrefix(line, []byte(">From ")) {
+			line = line[1:]
+		}
+		current.Write(line)
+		current.WriteString("\r\n")
+		if int64(current.Len()) > maxMessageBytes {
+			return nil, fmt.Errorf("message exceeds %d MB", maxMessageBytes/(1024*1024))
+		}
+	}
+	if err := scanner.Err(); err != nil {
+		return nil, err
+	}
+	if err := flush(); err != nil {
+		return nil, err
+	}
+	if len(messages) == 0 {
+		return nil, errors.New("MBOX contains no messages")
+	}
+	return messages, nil
+}
+
+func (a *App) importRawMessage(ctx context.Context, mb *Mailbox, folderID string, raw []byte) error {
+	msg, attachments, err := a.parseMaildirMessage(raw, mb.Address)
+	if err != nil {
+		return fmt.Errorf("invalid message: %w", err)
+	}
+	msg.MailboxID = mb.ID
+	msg.FolderID = folderID
+	msg.RecipientAddr = mb.Address
+	msg.RawPath = ""
+	id, err := a.insertMessage(ctx, msg, attachments)
+	if err != nil {
+		return err
+	}
+	if err := a.writeRawMessageToMaildir(ctx, id, raw, false); err != nil {
+		a.deleteMessage(ctx, id)
+		return err
+	}
+	return nil
+}
+
+func appendImportProblem(items []string, problem string) []string {
+	if len(items) >= 5 {
+		return items
+	}
+	return append(items, problem)
+}

apps/api/internal/app/mail_transfer_handlers_test.go

@@ -0,0 +1,174 @@
+package app
+
+import (
+	"archive/zip"
+	"bytes"
+	"encoding/json"
+	"io"
+	"mime/multipart"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+)
+
+func TestParseMBOXMultipleMessages(t *testing.T) {
+	raw := strings.Join([]string{
+		"From sender@example.com Mon Jan  1 00:00:00 2024",
+		"From: sender@example.com",
+		"To: first@example.com",
+		"Subject: first",
+		"",
+		"first body",
+		">From escaped body line",
+		"From sender@example.com Tue Jan  2 00:00:00 2024",
+		"From: sender@example.com",
+		"To: second@example.com",
+		"Subject: second",
+		"",
+		"second body",
+	}, "\n")
+	messages, err := parseMBOX(strings.NewReader(raw), 1<<20)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(messages) != 2 {
+		t.Fatalf("messages=%d", len(messages))
+	}
+	if !bytes.Contains(messages[0], []byte("Subject: first")) || !bytes.Contains(messages[0], []byte("From escaped body line")) {
+		t.Fatalf("first message=%q", messages[0])
+	}
+	if !bytes.Contains(messages[1], []byte("Subject: second")) {
+		t.Fatalf("second message=%q", messages[1])
+	}
+}
+
+func TestMailImportExportAndOwnership(t *testing.T) {
+	a := newTestApp(t)
+	ts := httptest.NewServer(a.Router())
+	defer ts.Close()
+	admin := &testClient{t: t, server: ts}
+	var login map[string]any
+	if code := admin.do("POST", "/api/auth/login", map[string]string{"email": "admin@lanqin.local", "password": "ChangeMe123!"}, &login); code != http.StatusOK {
+		t.Fatalf("admin login=%d", code)
+	}
+	var domains struct {
+		Items []Domain `json:"items"`
+	}
+	if code := admin.do("GET", "/api/admin/domains", nil, &domains); code != http.StatusOK || len(domains.Items) == 0 {
+		t.Fatalf("domains code=%d items=%d", code, len(domains.Items))
+	}
+	ownerMailbox := createTestMailbox(t, admin, domains.Items[0].ID, "transfer-owner", "Transfer Owner", "Password123!", nil)
+	otherMailbox := createTestMailbox(t, admin, domains.Items[0].ID, "transfer-other", "Transfer Other", "Password123!", nil)
+	owner := &testClient{t: t, server: ts}
+	if code := owner.do("POST", "/api/auth/login", map[string]string{"email": ownerMailbox.Address, "password": "Password123!"}, &login); code != http.StatusOK {
+		t.Fatalf("owner login=%d", code)
+	}
+
+	eml := []byte("From: sender@example.com\r\nTo: " + ownerMailbox.Address + "\r\nSubject: imported message\r\nMessage-ID: <imported@example.com>\r\nContent-Type: text/plain; charset=utf-8\r\n\r\nhello import")
+	var imported struct {
+		Imported int      `json:"imported"`
+		Skipped  int      `json:"skipped"`
+		Errors   []string `json:"errors"`
+	}
+	if code := doMailImport(t, owner, ownerMailbox.ID, "Inbox", map[string][]byte{"message.eml": eml}, &imported); code != http.StatusOK || imported.Imported != 1 || imported.Skipped != 0 {
+		t.Fatalf("import code=%d response=%+v", code, imported)
+	}
+
+	var list struct {
+		Items []MailMessage `json:"items"`
+	}
+	if code := owner.do("GET", "/api/mail/messages?folder=Inbox&mailboxId="+ownerMailbox.ID, nil, &list); code != http.StatusOK || len(list.Items) != 1 || list.Items[0].Subject != "imported message" {
+		t.Fatalf("list code=%d items=%+v", code, list.Items)
+	}
+
+	status, archive := getMailExport(t, owner, "/api/mail/export?view=folder&folder=Inbox&mailboxId="+ownerMailbox.ID)
+	if status != http.StatusOK {
+		t.Fatalf("export status=%d body=%q", status, archive)
+	}
+	zr, err := zip.NewReader(bytes.NewReader(archive), int64(len(archive)))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(zr.File) != 1 {
+		t.Fatalf("zip entries=%d", len(zr.File))
+	}
+	entry, err := zr.File[0].Open()
+	if err != nil {
+		t.Fatal(err)
+	}
+	exported, err := io.ReadAll(entry)
+	entry.Close()
+	if err != nil || !bytes.Contains(exported, []byte("Subject: imported message")) {
+		t.Fatalf("exported message err=%v raw=%q", err, exported)
+	}
+
+	var denied map[string]any
+	if code := doMailImport(t, owner, otherMailbox.ID, "Inbox", map[string][]byte{"message.eml": eml}, &denied); code != http.StatusNotFound {
+		t.Fatalf("cross-mailbox import code=%d", code)
+	}
+	status, _ = getMailExport(t, owner, "/api/mail/export?view=unknown")
+	if status != http.StatusForbidden {
+		t.Fatalf("unknown export status=%d", status)
+	}
+}
+
+func doMailImport(t *testing.T, client *testClient, mailboxID, folder string, files map[string][]byte, out any) int {
+	t.Helper()
+	var body bytes.Buffer
+	writer := multipart.NewWriter(&body)
+	_ = writer.WriteField("mailboxId", mailboxID)
+	_ = writer.WriteField("folder", folder)
+	for name, content := range files {
+		part, err := writer.CreateFormFile("files", name)
+		if err != nil {
+			t.Fatal(err)
+		}
+		if _, err := part.Write(content); err != nil {
+			t.Fatal(err)
+		}
+	}
+	if err := writer.Close(); err != nil {
+		t.Fatal(err)
+	}
+	req, err := http.NewRequest(http.MethodPost, client.server.URL+"/api/mail/import", &body)
+	if err != nil {
+		t.Fatal(err)
+	}
+	req.Header.Set("Content-Type", writer.FormDataContentType())
+	if client.cookie != nil {
+		req.AddCookie(client.cookie)
+	}
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer resp.Body.Close()
+	if out != nil {
+		if err := json.NewDecoder(resp.Body).Decode(out); err != nil {
+			t.Fatalf("decode import response: %v", err)
+		}
+	}
+	return resp.StatusCode
+}
+
+func getMailExport(t *testing.T, client *testClient, path string) (int, []byte) {
+	t.Helper()
+	req, err := http.NewRequest(http.MethodGet, client.server.URL+path, nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if client.cookie != nil {
+		req.AddCookie(client.cookie)
+	}
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer resp.Body.Close()
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return resp.StatusCode, body
+}

apps/api/internal/app/mail_translate.go

@@ -0,0 +1,297 @@
+package app
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"strings"
+	"time"
+	"unicode/utf8"
+
+	"github.com/go-chi/chi/v5"
+	"golang.org/x/net/html"
+)
+
+const googleTranslateEndpoint = "https://translate.googleapis.com/translate_a/single"
+
+type translateMailMessageRequest struct {
+	TargetLanguage string `json:"targetLanguage"`
+}
+
+type translateMailMessageResponse struct {
+	TranslatedText string `json:"translatedText"`
+	TranslatedHTML string `json:"translatedHtml,omitempty"`
+	SourceLanguage string `json:"sourceLanguage,omitempty"`
+	TargetLanguage string `json:"targetLanguage"`
+	Truncated      bool   `json:"truncated"`
+}
+
+func (a *App) handleTranslateMailMessage(w http.ResponseWriter, r *http.Request) {
+	if !a.cfg.MailTranslateEnabled {
+		respondError(w, http.StatusForbidden, "mail translation is disabled")
+		return
+	}
+	var req translateMailMessageRequest
+	if err := decodeJSON(r, &req); err != nil {
+		badRequest(w, err)
+		return
+	}
+	target := normalizeTranslateTarget(req.TargetLanguage)
+	if target == "" {
+		respondError(w, http.StatusBadRequest, "unsupported target language")
+		return
+	}
+	msg, err := a.loadMessageForRequest(r, chi.URLParam(r, "id"), true)
+	if err != nil {
+		respondError(w, http.StatusNotFound, "message not found")
+		return
+	}
+	text := strings.TrimSpace(msg.BodyText)
+	if text == "" {
+		text = strings.TrimSpace(msg.Snippet)
+	}
+	if text == "" {
+		respondError(w, http.StatusBadRequest, "message has no translatable text")
+		return
+	}
+	maxChars := a.cfg.MailTranslateMaxChars
+	if maxChars <= 0 {
+		maxChars = 8000
+	}
+	text, truncated := truncateRunes(text, maxChars)
+	translated, source, err := googleFreeTranslate(r.Context(), text, target)
+	if err != nil {
+		a.log.Warn("mail translation failed", "message_id", msg.ID, "target", target, "error", err)
+		respondError(w, http.StatusBadGateway, "translation failed")
+		return
+	}
+	translatedHTML := ""
+	if strings.TrimSpace(msg.BodyHTML) != "" {
+		translatedHTML, _ = translateHTMLTextNodes(r.Context(), a.policy, msg.BodyHTML, target, maxChars)
+	}
+	respondJSON(w, http.StatusOK, translateMailMessageResponse{TranslatedText: translated, TranslatedHTML: translatedHTML, SourceLanguage: source, TargetLanguage: target, Truncated: truncated})
+}
+
+func (a *App) handleTranslateExternalIMAPMessage(w http.ResponseWriter, r *http.Request) {
+	if !a.cfg.MailTranslateEnabled {
+		respondError(w, http.StatusForbidden, "mail translation is disabled")
+		return
+	}
+	var req translateMailMessageRequest
+	if err := decodeJSON(r, &req); err != nil {
+		badRequest(w, err)
+		return
+	}
+	target := normalizeTranslateTarget(req.TargetLanguage)
+	if target == "" {
+		respondError(w, http.StatusBadRequest, "unsupported target language")
+		return
+	}
+	account, ok := a.externalIMAPAccountForMailRequest(w, r)
+	if !ok {
+		return
+	}
+	folder, uid, ok := decodeExternalRemoteID(w, chi.URLParam(r, "remoteId"))
+	if !ok {
+		return
+	}
+	client, err := a.externalIMAP.openExternalIMAPClient(r.Context(), account)
+	if err != nil {
+		respondError(w, http.StatusBadRequest, "connection failed: "+err.Error())
+		return
+	}
+	defer client.Close()
+	raw, remote, err := client.FetchRaw(r.Context(), folder, uid)
+	if err != nil {
+		respondError(w, http.StatusBadRequest, "failed to load remote message")
+		return
+	}
+	stored, _, err := a.parseMaildirMessage(raw, account.Username)
+	text := ""
+	if err == nil {
+		text = strings.TrimSpace(stored.BodyText)
+		if text == "" {
+			text = strings.TrimSpace(stored.Snippet)
+		}
+	}
+	if text == "" {
+		text = strings.TrimSpace(remote.Snippet)
+	}
+	if text == "" {
+		respondError(w, http.StatusBadRequest, "message has no translatable text")
+		return
+	}
+	maxChars := a.cfg.MailTranslateMaxChars
+	if maxChars <= 0 {
+		maxChars = 8000
+	}
+	text, truncated := truncateRunes(text, maxChars)
+	translated, source, err := googleFreeTranslate(r.Context(), text, target)
+	if err != nil {
+		a.log.Warn("external mail translation failed", "account_id", account.ID, "remote_id", chi.URLParam(r, "remoteId"), "target", target, "error", err)
+		respondError(w, http.StatusBadGateway, "translation failed")
+		return
+	}
+	translatedHTML := ""
+	if err == nil && strings.TrimSpace(stored.BodyHTML) != "" {
+		translatedHTML, _ = translateHTMLTextNodes(r.Context(), a.policy, stored.BodyHTML, target, maxChars)
+	}
+	respondJSON(w, http.StatusOK, translateMailMessageResponse{TranslatedText: translated, TranslatedHTML: translatedHTML, SourceLanguage: source, TargetLanguage: target, Truncated: truncated})
+}
+
+func translateHTMLTextNodes(ctx context.Context, policy *HTMLPolicy, bodyHTML, target string, maxChars int) (string, error) {
+	nodes, err := html.ParseFragment(strings.NewReader(bodyHTML), nil)
+	if err != nil {
+		return "", err
+	}
+	remaining := maxChars
+	var translateNode func(*html.Node) error
+	translateNode = func(n *html.Node) error {
+		if n.Type == html.ElementNode && shouldSkipHTMLTranslationElement(n.Data) {
+			return nil
+		}
+		if n.Type == html.TextNode {
+			text := strings.TrimSpace(n.Data)
+			if text != "" && containsTranslatableLetter(text) && remaining > 0 {
+				limited, _ := truncateRunes(text, remaining)
+				remaining -= utf8.RuneCountInString(limited)
+				translated, _, err := googleFreeTranslate(ctx, limited, target)
+				if err != nil {
+					return err
+				}
+				n.Data = strings.Replace(n.Data, text, translated, 1)
+			}
+		}
+		for c := n.FirstChild; c != nil; c = c.NextSibling {
+			if err := translateNode(c); err != nil {
+				return err
+			}
+		}
+		return nil
+	}
+	for _, n := range nodes {
+		if err := translateNode(n); err != nil {
+			return "", err
+		}
+	}
+	var b bytes.Buffer
+	for _, n := range nodes {
+		if err := html.Render(&b, n); err != nil {
+			return "", err
+		}
+	}
+	if policy != nil {
+		return policy.Sanitize(b.String()), nil
+	}
+	return b.String(), nil
+}
+
+func shouldSkipHTMLTranslationElement(tag string) bool {
+	switch strings.ToLower(tag) {
+	case "script", "style", "code", "pre", "textarea":
+		return true
+	default:
+		return false
+	}
+}
+
+func containsTranslatableLetter(value string) bool {
+	for _, r := range value {
+		if (r >= 'A' && r <= 'Z') || (r >= 'a' && r <= 'z') || (r >= '\u4e00' && r <= '\u9fff') {
+			return true
+		}
+	}
+	return false
+}
+
+func normalizeTranslateTarget(value string) string {
+	switch strings.ToLower(strings.TrimSpace(value)) {
+	case "zh", "zh-cn", "zh-hans", "zh_cn":
+		return "zh-CN"
+	case "zh-tw", "zh-hant", "zh_hk", "zh-hk", "zh-mo":
+		return "zh-TW"
+	case "en", "en-us", "en-gb":
+		return "en"
+	default:
+		return ""
+	}
+}
+
+func truncateRunes(value string, max int) (string, bool) {
+	if max <= 0 || utf8.RuneCountInString(value) <= max {
+		return value, false
+	}
+	out := make([]rune, 0, max)
+	for i, r := range value {
+		if len(out) >= max {
+			return string(out), i < len(value)
+		}
+		out = append(out, r)
+	}
+	return string(out), false
+}
+
+func googleFreeTranslate(ctx context.Context, text, target string) (string, string, error) {
+	ctx, cancel := context.WithTimeout(ctx, 12*time.Second)
+	defer cancel()
+	params := url.Values{}
+	params.Set("client", "gtx")
+	params.Set("sl", "auto")
+	params.Set("tl", target)
+	params.Set("dt", "t")
+	params.Set("q", text)
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, googleTranslateEndpoint+"?"+params.Encode(), nil)
+	if err != nil {
+		return "", "", err
+	}
+	req.Header.Set("User-Agent", "Mozilla/5.0")
+	res, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return "", "", err
+	}
+	defer res.Body.Close()
+	if res.StatusCode != http.StatusOK {
+		_, _ = io.Copy(io.Discard, io.LimitReader(res.Body, 1024))
+		return "", "", fmt.Errorf("google translate status %d", res.StatusCode)
+	}
+	var raw any
+	if err := json.NewDecoder(io.LimitReader(res.Body, 4*1024*1024)).Decode(&raw); err != nil {
+		return "", "", err
+	}
+	translated, source := parseGoogleTranslateResponse(raw)
+	translated = strings.TrimSpace(translated)
+	if translated == "" {
+		return "", source, errors.New("empty translation")
+	}
+	return translated, source, nil
+}
+
+func parseGoogleTranslateResponse(raw any) (string, string) {
+	root, _ := raw.([]any)
+	var b strings.Builder
+	if len(root) > 0 {
+		if sentences, ok := root[0].([]any); ok {
+			for _, item := range sentences {
+				parts, ok := item.([]any)
+				if !ok || len(parts) == 0 {
+					continue
+				}
+				if s, ok := parts[0].(string); ok {
+					b.WriteString(s)
+				}
+			}
+		}
+	}
+	source := ""
+	if len(root) > 2 {
+		if s, ok := root[2].(string); ok {
+			source = s
+		}
+	}
+	return b.String(), source
+}

apps/api/internal/app/mail_translate_test.go

@@ -0,0 +1,32 @@
+package app
+
+import "testing"
+
+func TestParseGoogleTranslateResponse(t *testing.T) {
+	raw := []any{
+		[]any{
+			[]any{"你好", "Hello", nil, nil, float64(3)},
+			[]any{"，世界", ", world", nil, nil, float64(3)},
+		},
+		nil,
+		"en",
+	}
+	translated, source := parseGoogleTranslateResponse(raw)
+	if translated != "你好，世界" {
+		t.Fatalf("translated = %q", translated)
+	}
+	if source != "en" {
+		t.Fatalf("source = %q", source)
+	}
+}
+
+func TestTruncateRunes(t *testing.T) {
+	got, truncated := truncateRunes("你好world", 4)
+	if got != "你好wo" || !truncated {
+		t.Fatalf("truncateRunes() = %q, %v", got, truncated)
+	}
+	got, truncated = truncateRunes("你好", 4)
+	if got != "你好" || truncated {
+		t.Fatalf("truncateRunes() = %q, %v", got, truncated)
+	}
+}

apps/api/internal/app/maildir_health.go

@@ -0,0 +1,197 @@
+package app
+
+import (
+	"net/http"
+	"strings"
+	"sync"
+	"time"
+)
+
+const maxMaildirRecentErrors = 10
+
+type maildirSyncCounts struct {
+	FilesScanned     int      `json:"filesScanned"`
+	Imported         int      `json:"imported"`
+	Backfilled       int      `json:"backfilled"`
+	Cleaned          int      `json:"cleaned"`
+	FileErrors       int      `json:"fileErrors"`
+	fileErrorDetails []string `json:"-"`
+}
+
+func (c maildirSyncCounts) total() int {
+	return c.Imported + c.Backfilled + c.Cleaned
+}
+
+type maildirSyncRun struct {
+	StartedAt  time.Time         `json:"startedAt"`
+	FinishedAt *time.Time        `json:"finishedAt,omitempty"`
+	DurationMs int64             `json:"durationMs"`
+	Status     string            `json:"status"`
+	Error      string            `json:"error,omitempty"`
+	Counts     maildirSyncCounts `json:"counts"`
+}
+
+type maildirSyncHealthResponse struct {
+	Configured    bool              `json:"configured"`
+	Enabled       bool              `json:"enabled"`
+	Root          string            `json:"root"`
+	ScanSeconds   int               `json:"scanSeconds"`
+	WorkerStarted bool              `json:"workerStarted"`
+	Running       bool              `json:"running"`
+	LastRun       *maildirSyncRun   `json:"lastRun,omitempty"`
+	LastError     string            `json:"lastError,omitempty"`
+	NextRunAt     *time.Time        `json:"nextRunAt,omitempty"`
+	RecentErrors  []string          `json:"recentErrors"`
+	Summary       maildirSyncCounts `json:"summary"`
+}
+
+type maildirSyncHealthTracker struct {
+	mu            sync.Mutex
+	workerStarted bool
+	running       bool
+	current       *maildirSyncRun
+	lastRun       *maildirSyncRun
+	lastError     string
+	nextRunAt     *time.Time
+	recentErrors  []string
+	summary       maildirSyncCounts
+}
+
+func newMaildirSyncHealthTracker() *maildirSyncHealthTracker {
+	return &maildirSyncHealthTracker{}
+}
+
+func (h *maildirSyncHealthTracker) markWorkerStarted(nextRunAt *time.Time) {
+	if h == nil {
+		return
+	}
+	h.mu.Lock()
+	defer h.mu.Unlock()
+	h.workerStarted = true
+	h.nextRunAt = cloneTimePtr(nextRunAt)
+}
+
+func (h *maildirSyncHealthTracker) markWorkerStopped() {
+	if h == nil {
+		return
+	}
+	h.mu.Lock()
+	defer h.mu.Unlock()
+	h.workerStarted = false
+	h.nextRunAt = nil
+}
+
+func (h *maildirSyncHealthTracker) markRunStarted(startedAt time.Time) {
+	if h == nil {
+		return
+	}
+	h.mu.Lock()
+	defer h.mu.Unlock()
+	run := &maildirSyncRun{StartedAt: startedAt.UTC(), Status: "running"}
+	h.running = true
+	h.current = run
+	h.lastRun = cloneMaildirSyncRun(run)
+}
+
+func (h *maildirSyncHealthTracker) markRunFinished(finishedAt time.Time, counts maildirSyncCounts, err error, nextRunAt *time.Time) {
+	if h == nil {
+		return
+	}
+	h.mu.Lock()
+	defer h.mu.Unlock()
+	run := h.current
+	if run == nil {
+		run = &maildirSyncRun{StartedAt: finishedAt.UTC()}
+	}
+	finished := finishedAt.UTC()
+	run.FinishedAt = &finished
+	run.DurationMs = finished.Sub(run.StartedAt).Milliseconds()
+	run.Counts = counts
+	run.Status = "success"
+	run.Error = ""
+	if err != nil {
+		run.Status = "error"
+		run.Error = err.Error()
+		h.lastError = run.Error
+		h.pushRecentError(run.Error)
+	} else if counts.FileErrors > 0 {
+		run.Status = "partial"
+		if len(counts.fileErrorDetails) > 0 {
+			run.Error = counts.fileErrorDetails[0]
+			h.lastError = run.Error
+		}
+		for _, detail := range counts.fileErrorDetails {
+			h.pushRecentError(detail)
+		}
+	} else {
+		h.lastError = ""
+	}
+	h.summary.FilesScanned += counts.FilesScanned
+	h.summary.Imported += counts.Imported
+	h.summary.Backfilled += counts.Backfilled
+	h.summary.Cleaned += counts.Cleaned
+	h.summary.FileErrors += counts.FileErrors
+	h.running = false
+	h.current = nil
+	h.lastRun = cloneMaildirSyncRun(run)
+	h.nextRunAt = cloneTimePtr(nextRunAt)
+}
+
+func (h *maildirSyncHealthTracker) snapshot(cfg Config) maildirSyncHealthResponse {
+	root := strings.TrimSpace(cfg.MaildirRoot)
+	scanSeconds := cfg.MaildirScanSeconds
+	if scanSeconds <= 0 {
+		scanSeconds = 30
+	}
+	out := maildirSyncHealthResponse{
+		Configured:  root != "",
+		Enabled:     root != "",
+		Root:        root,
+		ScanSeconds: scanSeconds,
+	}
+	if h == nil {
+		return out
+	}
+	h.mu.Lock()
+	defer h.mu.Unlock()
+	out.WorkerStarted = h.workerStarted
+	out.Running = h.running
+	out.LastRun = cloneMaildirSyncRun(h.lastRun)
+	out.LastError = h.lastError
+	out.NextRunAt = cloneTimePtr(h.nextRunAt)
+	out.RecentErrors = append([]string(nil), h.recentErrors...)
+	out.Summary = h.summary
+	return out
+}
+
+func (h *maildirSyncHealthTracker) pushRecentError(value string) {
+	value = strings.TrimSpace(value)
+	if value == "" {
+		return
+	}
+	h.recentErrors = append([]string{value}, h.recentErrors...)
+	if len(h.recentErrors) > maxMaildirRecentErrors {
+		h.recentErrors = h.recentErrors[:maxMaildirRecentErrors]
+	}
+}
+
+func cloneMaildirSyncRun(in *maildirSyncRun) *maildirSyncRun {
+	if in == nil {
+		return nil
+	}
+	out := *in
+	out.FinishedAt = cloneTimePtr(in.FinishedAt)
+	return &out
+}
+
+func cloneTimePtr(in *time.Time) *time.Time {
+	if in == nil {
+		return nil
+	}
+	out := in.UTC()
+	return &out
+}
+
+func (a *App) handleMaildirSyncHealth(w http.ResponseWriter, r *http.Request) {
+	respondJSON(w, http.StatusOK, a.maildirHealth.snapshot(a.cfg))
+}

apps/api/internal/app/maildir_ownership_other.go

@@ -0,0 +1,7 @@
+//go:build !unix
+
+package app
+
+func applyMaildirOwnership(path string) error {
+	return nil
+}

apps/api/internal/app/maildir_ownership_unix.go

@@ -0,0 +1,17 @@
+//go:build unix
+
+package app
+
+import "os"
+
+const (
+	maildirOwnerUID = 5000
+	maildirOwnerGID = 5000
+)
+
+func applyMaildirOwnership(path string) error {
+	if os.Geteuid() != 0 {
+		return nil
+	}
+	return os.Chown(path, maildirOwnerUID, maildirOwnerGID)
+}

apps/api/internal/app/maildir_sync.go

@@ -49,54 +49,79 @@ func (a *App) maildirWorker(ctx context.Context) {
 	if interval <= 0 {
 		interval = 30 * time.Second
 	}
+	nextRunAt := a.now().UTC()
+	a.maildirHealth.markWorkerStarted(&nextRunAt)
 	a.log.Info("maildir sync worker started", "root", a.cfg.MaildirRoot, "interval", interval.String())
-	if n, err := a.syncMaildirOnce(ctx); err != nil {
+	if counts, err := a.syncMaildirOnceTracked(ctx, interval); err != nil {
 		a.log.Warn("initial maildir sync failed", "error", err)
-	} else if n > 0 {
-		a.log.Info("initial maildir sync imported messages", "count", n)
+	} else if n := counts.total(); n > 0 {
+		a.log.Info("initial maildir sync processed messages", "count", n)
 	}
 	ticker := time.NewTicker(interval)
 	defer ticker.Stop()
 	for {
 		select {
 		case <-ctx.Done():
+			a.maildirHealth.markWorkerStopped()
 			a.log.Info("maildir sync worker stopped")
 			return
 		case <-ticker.C:
-			n, err := a.syncMaildirOnce(ctx)
+			counts, err := a.syncMaildirOnceTracked(ctx, interval)
 			if err != nil {
 				a.log.Warn("maildir sync failed", "error", err)
 				continue
 			}
-			if n > 0 {
-				a.log.Info("maildir sync imported messages", "count", n)
+			if n := counts.total(); n > 0 {
+				a.log.Info("maildir sync processed messages", "count", n)
 			}
 		}
 	}
 }
 
+func (a *App) syncMaildirOnceTracked(ctx context.Context, interval time.Duration) (maildirSyncCounts, error) {
+	startedAt := a.now().UTC()
+	a.maildirHealth.markRunStarted(startedAt)
+	counts, err := a.syncMaildirOnceDetailed(ctx)
+	finishedAt := a.now().UTC()
+	var nextRunAt *time.Time
+	if interval > 0 && err == nil {
+		next := finishedAt.Add(interval)
+		nextRunAt = &next
+	}
+	a.maildirHealth.markRunFinished(finishedAt, counts, err, nextRunAt)
+	return counts, err
+}
+
 func (a *App) syncMaildirOnce(ctx context.Context) (int, error) {
+	counts, err := a.syncMaildirOnceDetailed(ctx)
+	return counts.total(), err
+}
+
+func (a *App) syncMaildirOnceDetailed(ctx context.Context) (maildirSyncCounts, error) {
 	root := strings.TrimSpace(a.cfg.MaildirRoot)
 	if root == "" {
-		return 0, nil
+		return maildirSyncCounts{}, nil
 	}
 	mailboxes, err := a.maildirMailboxes(ctx)
 	if err != nil {
-		return 0, err
+		return maildirSyncCounts{}, err
 	}
-	imported := 0
+	counts := maildirSyncCounts{}
 	for _, mb := range mailboxes {
 		if mb.Unregistered {
-			count, err := a.syncUnregisteredMaildir(ctx, mb)
+			mbCounts, err := a.syncUnregisteredMaildirDetailed(ctx, mb)
+			counts.FilesScanned += mbCounts.FilesScanned
+			counts.Imported += mbCounts.Imported
+			counts.FileErrors += mbCounts.FileErrors
+			counts.fileErrorDetails = append(counts.fileErrorDetails, mbCounts.fileErrorDetails...)
 			if err != nil {
-				return imported, err
+				return counts, err
 			}
-			imported += count
 			continue
 		}
 		folders, err := a.maildirFolders(ctx, mb.ID)
 		if err != nil {
-			return imported, err
+			return counts, err
 		}
 		base := filepath.Join(root, mb.Domain, mb.LocalPart, "Maildir")
 		for _, folder := range folders {
@@ -104,7 +129,7 @@ func (a *App) syncMaildirOnce(ctx context.Context) (int, error) {
 			for _, sub := range []string{"new", "cur"} {
 				select {
 				case <-ctx.Done():
-					return imported, ctx.Err()
+					return counts, ctx.Err()
 				default:
 				}
 				dir := filepath.Join(folderBase, sub)
@@ -113,26 +138,39 @@ func (a *App) syncMaildirOnce(ctx context.Context) (int, error) {
 					if errors.Is(err, os.ErrNotExist) {
 						continue
 					}
-					return imported, err
+					return counts, err
 				}
 				for _, entry := range entries {
 					if entry.IsDir() || strings.HasPrefix(entry.Name(), ".") {
 						continue
 					}
 					path := filepath.Join(dir, entry.Name())
+					counts.FilesScanned++
 					ok, err := a.syncMaildirFile(ctx, mb, folder, path)
 					if err != nil {
+						counts.FileErrors++
+						counts.fileErrorDetails = append(counts.fileErrorDetails, fmt.Sprintf("%s: %v", path, err))
 						a.log.Warn("maildir file import failed", "path", path, "error", err)
 						continue
 					}
 					if ok {
-						imported++
+						counts.Imported++
 					}
 				}
 			}
 		}
 	}
-	return imported, nil
+	backfilled, err := a.backfillSQLiteMessagesToMaildir(ctx)
+	if err != nil {
+		return counts, err
+	}
+	counts.Backfilled += backfilled
+	cleaned, err := a.cleanupMissingMaildirMessages(ctx)
+	if err != nil {
+		return counts, err
+	}
+	counts.Cleaned += cleaned
+	return counts, nil
 }
 
 func (a *App) maildirMailboxes(ctx context.Context) ([]maildirMailbox, error) {
@@ -179,12 +217,17 @@ func (a *App) maildirMailboxes(ctx context.Context) ([]maildirMailbox, error) {
 }
 
 func (a *App) syncUnregisteredMaildir(ctx context.Context, mb maildirMailbox) (int, error) {
+	counts, err := a.syncUnregisteredMaildirDetailed(ctx, mb)
+	return counts.Imported, err
+}
+
+func (a *App) syncUnregisteredMaildirDetailed(ctx context.Context, mb maildirMailbox) (maildirSyncCounts, error) {
 	base := filepath.Join(strings.TrimSpace(a.cfg.MaildirRoot), mb.Domain, mb.LocalPart, "Maildir")
-	imported := 0
+	counts := maildirSyncCounts{}
 	for _, sub := range []string{"new", "cur"} {
 		select {
 		case <-ctx.Done():
-			return imported, ctx.Err()
+			return counts, ctx.Err()
 		default:
 		}
 		dir := filepath.Join(base, sub)
@@ -193,24 +236,27 @@ func (a *App) syncUnregisteredMaildir(ctx context.Context, mb maildirMailbox) (i
 			if errors.Is(err, os.ErrNotExist) {
 				continue
 			}
-			return imported, err
+			return counts, err
 		}
 		for _, entry := range entries {
 			if entry.IsDir() || strings.HasPrefix(entry.Name(), ".") {
 				continue
 			}
 			path := filepath.Join(dir, entry.Name())
+			counts.FilesScanned++
 			ok, err := a.syncUnregisteredMaildirFile(ctx, mb, path)
 			if err != nil {
+				counts.FileErrors++
+				counts.fileErrorDetails = append(counts.fileErrorDetails, fmt.Sprintf("%s: %v", path, err))
 				a.log.Warn("unregistered maildir file import failed", "path", path, "error", err)
 				continue
 			}
 			if ok {
-				imported++
+				counts.Imported++
 			}
 		}
 	}
-	return imported, nil
+	return counts, nil
 }
 
 func (a *App) syncUnregisteredMaildirFile(ctx context.Context, mb maildirMailbox, path string) (bool, error) {
@@ -248,6 +294,7 @@ func (a *App) syncUnregisteredMaildirFile(ctx context.Context, mb maildirMailbox
 	if exists, err := a.unregisteredMaildirMessageExists(ctx, path, msg.MessageID, msg.RecipientAddr); err != nil {
 		return false, err
 	} else if exists {
+		a.attachUnregisteredMaildirRawPathToExisting(ctx, path, msg.MessageID, msg.RecipientAddr)
 		return false, nil
 	}
 	_, err = a.insertMessage(ctx, msg, attachments)
@@ -291,7 +338,7 @@ func (a *App) syncMaildirFile(ctx context.Context, mb maildirMailbox, folder mai
 	}
 	msg.MailboxID = mb.ID
 	msg.FolderID = folder.ID
-	msg.IsRead = !strings.EqualFold(folder.Name, "Inbox")
+	msg.IsRead, msg.IsStarred = maildirFlagsFromPath(path, folder.Name)
 	msg.RawPath = path
 	if msg.MessageUID == "" {
 		msg.MessageUID = newID("uid")
@@ -311,11 +358,20 @@ func (a *App) syncMaildirFile(ctx context.Context, mb maildirMailbox, folder mai
 	if exists, err := a.maildirMessageExists(ctx, mb.ID, folder.ID, path, msg.MessageID); err != nil {
 		return false, err
 	} else if exists {
+		if _, err := a.syncExistingMaildirMessageState(ctx, mb.ID, folder.ID, path, msg.MessageID, msg.IsRead, msg.IsStarred); err != nil {
+			return false, err
+		}
+		return false, nil
+	}
+	if handled, err := a.syncExistingMaildirMessageState(ctx, mb.ID, folder.ID, path, msg.MessageID, msg.IsRead, msg.IsStarred); err != nil {
+		return false, err
+	} else if handled {
 		return false, nil
 	}
 	id, err := a.insertMessage(ctx, msg, attachments)
 	if err == nil && strings.EqualFold(folder.Name, "Inbox") {
 		a.applyInboundControls(ctx, id, mb.ID, msg.From, msg.Subject)
+		a.processInboundForwarding(ctx, id, mb.ID, raw)
 	}
 	return err == nil, err
 }
@@ -338,6 +394,210 @@ func (a *App) unregisteredMaildirMessageExists(ctx context.Context, rawPath, mes
 	return count > 0, nil
 }
 
+func (a *App) attachMaildirRawPathToExisting(ctx context.Context, mailboxID, folderID, rawPath, messageID string) {
+	if strings.TrimSpace(messageID) == "" || strings.TrimSpace(rawPath) == "" {
+		return
+	}
+	if _, err := a.db.ExecContext(ctx, `UPDATE messages SET raw_path=?,updated_at=? WHERE mailbox_id=? AND folder_id=? AND message_id=? AND message_id <> '' AND raw_path=''`,
+		rawPath, a.now().UTC().Format(time.RFC3339Nano), mailboxID, folderID, messageID); err != nil {
+		a.log.Warn("failed to attach maildir raw path to existing message", "path", rawPath, "error", err)
+	}
+}
+
+func (a *App) syncExistingMaildirMessageState(ctx context.Context, mailboxID, folderID, rawPath, messageID string, read, starred bool) (bool, error) {
+	now := a.now().UTC().Format(time.RFC3339Nano)
+	var samePathID, oldFolderID string
+	var oldRead, oldStarred int
+	var oldModSeq int64
+	err := a.db.QueryRowContext(ctx, `SELECT id,COALESCE(folder_id,''),is_read,is_starred,imap_modseq FROM messages WHERE mailbox_id=? AND raw_path=?`, mailboxID, rawPath).Scan(&samePathID, &oldFolderID, &oldRead, &oldStarred, &oldModSeq)
+	if err == nil {
+		if oldFolderID != folderID {
+			if oldFolderID != "" {
+				if _, err := a.bumpFolderModSeq(ctx, oldFolderID); err != nil {
+					return false, err
+				}
+			}
+			meta, err := a.nextIMAPMetadata(ctx, a.db, folderID)
+			if err != nil {
+				return false, err
+			}
+			_, err = a.db.ExecContext(ctx, `UPDATE messages SET folder_id=?,raw_path=?,is_read=?,is_starred=?,imap_uid=?,imap_modseq=?,updated_at=? WHERE id=?`,
+				folderID, rawPath, boolInt(read), boolInt(starred), meta.UID, meta.ModSeq, now, samePathID)
+			return err == nil, err
+		}
+		modSeq := oldModSeq
+		if oldRead != boolInt(read) || oldStarred != boolInt(starred) {
+			modSeq, err = a.bumpFolderModSeq(ctx, folderID)
+			if err != nil {
+				return false, err
+			}
+		}
+		_, err = a.db.ExecContext(ctx, `UPDATE messages SET raw_path=?,is_read=?,is_starred=?,imap_modseq=CASE WHEN ? > 0 THEN ? ELSE imap_modseq END,updated_at=? WHERE id=?`,
+			rawPath, boolInt(read), boolInt(starred), modSeq, modSeq, now, samePathID)
+		return err == nil, err
+	}
+	if err != nil && !errors.Is(err, sql.ErrNoRows) {
+		return false, err
+	}
+	if strings.TrimSpace(messageID) == "" {
+		return false, nil
+	}
+	type candidate struct {
+		ID      string
+		RawPath string
+	}
+	rows, err := a.db.QueryContext(ctx, `SELECT id,raw_path FROM messages WHERE mailbox_id=? AND message_id=? AND message_id <> '' ORDER BY CASE WHEN folder_id=? THEN 0 ELSE 1 END, created_at`, mailboxID, messageID, folderID)
+	if err != nil {
+		return false, err
+	}
+	var chosen candidate
+	for rows.Next() {
+		var c candidate
+		if err := rows.Scan(&c.ID, &c.RawPath); err != nil {
+			rows.Close()
+			return false, err
+		}
+		if c.RawPath == "" || c.RawPath == rawPath {
+			chosen = c
+			break
+		}
+		ok, err := a.pathIsUnderMaildirRoot(c.RawPath)
+		if err != nil {
+			rows.Close()
+			return false, err
+		}
+		if ok {
+			if _, err := os.Stat(c.RawPath); errors.Is(err, os.ErrNotExist) {
+				chosen = c
+				break
+			} else if err != nil {
+				rows.Close()
+				return false, err
+			}
+		}
+	}
+	if err := rows.Err(); err != nil {
+		rows.Close()
+		return false, err
+	}
+	if err := rows.Close(); err != nil {
+		return false, err
+	}
+	if chosen.ID == "" {
+		a.removeDuplicateMaildirMessage(ctx, rawPath, mailboxID, folderID, messageID)
+		return false, nil
+	}
+	var previousFolderID string
+	if err := a.db.QueryRowContext(ctx, `SELECT COALESCE(folder_id,'') FROM messages WHERE id=?`, chosen.ID).Scan(&previousFolderID); err != nil {
+		return false, err
+	}
+	if previousFolderID != "" && previousFolderID != folderID {
+		if _, err := a.bumpFolderModSeq(ctx, previousFolderID); err != nil {
+			return false, err
+		}
+	}
+	meta, err := a.nextIMAPMetadata(ctx, a.db, folderID)
+	if err != nil {
+		return false, err
+	}
+	_, err = a.db.ExecContext(ctx, `UPDATE messages SET folder_id=?,raw_path=?,is_read=?,is_starred=?,imap_uid=?,imap_modseq=?,updated_at=? WHERE id=?`, folderID, rawPath, boolInt(read), boolInt(starred), meta.UID, meta.ModSeq, now, chosen.ID)
+	return err == nil, err
+}
+
+func (a *App) removeDuplicateMaildirMessage(ctx context.Context, rawPath, mailboxID, folderID, messageID string) {
+	var existing string
+	err := a.db.QueryRowContext(ctx, `SELECT raw_path FROM messages WHERE mailbox_id=? AND folder_id=? AND message_id=? AND message_id <> '' AND raw_path<>'' LIMIT 1`, mailboxID, folderID, messageID).Scan(&existing)
+	if err != nil || existing == "" || existing == rawPath {
+		return
+	}
+	a.removeMaildirPath(ctx, rawPath)
+}
+
+func (a *App) cleanupMissingMaildirMessages(ctx context.Context) (int, error) {
+	if strings.TrimSpace(a.cfg.MaildirRoot) == "" {
+		return 0, nil
+	}
+	cutoff := a.now().UTC().Add(-5 * time.Minute).Format(time.RFC3339Nano)
+	rows, err := a.db.QueryContext(ctx, `SELECT id,raw_path FROM messages WHERE COALESCE(mailbox_id,'')<>'' AND raw_path<>'' AND updated_at<?`, cutoff)
+	if err != nil {
+		return 0, err
+	}
+	type item struct {
+		ID      string
+		RawPath string
+	}
+	var missing []item
+	for rows.Next() {
+		var it item
+		if err := rows.Scan(&it.ID, &it.RawPath); err != nil {
+			rows.Close()
+			return 0, err
+		}
+		ok, err := a.pathIsUnderMaildirRoot(it.RawPath)
+		if err != nil {
+			rows.Close()
+			return 0, err
+		}
+		if !ok {
+			continue
+		}
+		if _, err := os.Stat(it.RawPath); errors.Is(err, os.ErrNotExist) {
+			missing = append(missing, it)
+		} else if err != nil {
+			rows.Close()
+			return 0, err
+		}
+	}
+	if err := rows.Err(); err != nil {
+		rows.Close()
+		return 0, err
+	}
+	if err := rows.Close(); err != nil {
+		return 0, err
+	}
+	for _, it := range missing {
+		a.deleteMessageFiles(ctx, it.ID)
+		var folderID sql.NullString
+		_ = a.db.QueryRowContext(ctx, `SELECT folder_id FROM messages WHERE id=?`, it.ID).Scan(&folderID)
+		if _, err := a.db.ExecContext(ctx, `DELETE FROM messages WHERE id=?`, it.ID); err != nil {
+			return 0, err
+		}
+		if folderID.Valid && folderID.String != "" {
+			if _, err := a.bumpFolderModSeq(ctx, folderID.String); err != nil {
+				return 0, err
+			}
+		}
+	}
+	return len(missing), nil
+}
+
+func maildirFlagsFromPath(path, folderName string) (bool, bool) {
+	base := filepath.Base(path)
+	flags := ""
+	hasFlags := false
+	for _, sep := range []string{maildirFlagSeparator(), ":2,", "!2,"} {
+		if idx := strings.LastIndex(base, sep); idx >= 0 {
+			flags = base[idx+len(sep):]
+			hasFlags = true
+			break
+		}
+	}
+	if hasFlags {
+		return strings.ContainsRune(flags, 'S'), strings.ContainsRune(flags, 'F')
+	}
+	return !strings.EqualFold(folderName, "Inbox"), false
+}
+
+func (a *App) attachUnregisteredMaildirRawPathToExisting(ctx context.Context, rawPath, messageID, recipient string) {
+	if strings.TrimSpace(messageID) == "" || strings.TrimSpace(rawPath) == "" {
+		return
+	}
+	if _, err := a.db.ExecContext(ctx, `UPDATE messages SET raw_path=?,updated_at=? WHERE mailbox_id IS NULL AND recipient_addr=? AND message_id=? AND message_id <> '' AND raw_path=''`,
+		rawPath, a.now().UTC().Format(time.RFC3339Nano), recipient, messageID); err != nil {
+		a.log.Warn("failed to attach unregistered maildir raw path to existing message", "path", rawPath, "error", err)
+	}
+}
+
 func unregisteredRecipientFromMessage(msg storedMessage, domain string) string {
 	domain = normalizeDomain(domain)
 	for _, address := range append(append([]string{}, msg.To...), msg.CC...) {
@@ -382,19 +642,20 @@ func (a *App) parseMaildirMessage(raw []byte, fallbackTo string) (storedMessage,
 		receivedAt = sentAt
 	}
 	return storedMessage{
-		MessageUID: newID("uid"),
-		MessageID:  strings.TrimSpace(m.Header.Get("Message-Id")),
-		Subject:    subject,
-		From:       from,
-		FromName:   fromName,
-		To:         to,
-		CC:         cc,
-		SentAt:     sentAt,
-		ReceivedAt: receivedAt,
-		Snippet:    snippetFrom(bodyText, bodyHTML),
-		BodyText:   bodyText,
-		BodyHTML:   bodyHTML,
-		IsRead:     false,
+		MessageUID:     newID("uid"),
+		MessageID:      strings.TrimSpace(m.Header.Get("Message-Id")),
+		Subject:        subject,
+		From:           from,
+		FromName:       fromName,
+		To:             to,
+		CC:             cc,
+		SentAt:         sentAt,
+		ReceivedAt:     receivedAt,
+		Snippet:        snippetFrom(bodyText, bodyHTML),
+		BodyText:       bodyText,
+		BodyHTML:       bodyHTML,
+		IsRead:         false,
+		Authentication: parseMailAuthentication(textproto.MIMEHeader(m.Header)),
 	}, parsed.Attachments, nil
 }
 

apps/api/internal/app/maildir_write.go

@@ -0,0 +1,613 @@
+package app
+
+import (
+	"context"
+	"database/sql"
+	"encoding/base64"
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+	"runtime"
+	"strings"
+	"time"
+)
+
+func (a *App) writeStoredMessageToMaildir(ctx context.Context, messageID string, msg storedMessage, attachments []AttachmentInput) error {
+	if strings.TrimSpace(a.cfg.MaildirRoot) == "" || strings.TrimSpace(msg.MailboxID) == "" || strings.TrimSpace(msg.FolderID) == "" {
+		return nil
+	}
+	raw, err := BuildMIME(MIMEMessage{
+		From:        msg.From,
+		FromName:    msg.FromName,
+		To:          msg.To,
+		CC:          msg.CC,
+		BCC:         msg.BCC,
+		Subject:     msg.Subject,
+		Text:        msg.BodyText,
+		HTML:        msg.BodyHTML,
+		MessageID:   msg.MessageID,
+		Date:        messageDate(msg),
+		Attachments: attachments,
+	})
+	if err != nil {
+		return err
+	}
+	return a.writeRawMessageToMaildir(ctx, messageID, raw, false)
+}
+
+func (a *App) rewriteMessageMaildir(ctx context.Context, messageID string) error {
+	if strings.TrimSpace(a.cfg.MaildirRoot) == "" {
+		return nil
+	}
+	msg, err := a.storedMessageByID(ctx, messageID)
+	if err != nil {
+		return err
+	}
+	attachments, err := a.attachmentInputsForMessage(ctx, messageID)
+	if err != nil {
+		return err
+	}
+	raw, err := BuildMIME(MIMEMessage{
+		From:        msg.From,
+		FromName:    msg.FromName,
+		To:          msg.To,
+		CC:          msg.CC,
+		BCC:         msg.BCC,
+		Subject:     msg.Subject,
+		Text:        msg.BodyText,
+		HTML:        msg.BodyHTML,
+		MessageID:   msg.MessageID,
+		Date:        messageDate(msg),
+		Attachments: attachments,
+	})
+	if err != nil {
+		return err
+	}
+	return a.writeRawMessageToMaildir(ctx, messageID, raw, true)
+}
+
+func (a *App) writeRawMessageToMaildir(ctx context.Context, messageID string, raw []byte, replace bool) error {
+	state, err := a.maildirMessageState(ctx, messageID)
+	if err != nil {
+		return err
+	}
+	return a.writeRawMessageToMaildirFolder(ctx, messageID, state.FolderID, raw, replace, false)
+}
+
+func (a *App) writeRawMessageToMaildirFolder(ctx context.Context, messageID, folderID string, raw []byte, replace bool, updateFolder bool) error {
+	if strings.TrimSpace(a.cfg.MaildirRoot) == "" {
+		return nil
+	}
+	state, err := a.maildirMessageState(ctx, messageID)
+	if err != nil {
+		return err
+	}
+	if folderID != "" {
+		oldFolderID := state.FolderID
+		state.FolderID = folderID
+		if updateFolder && oldFolderID != "" && oldFolderID != state.FolderID {
+			if _, err := a.bumpFolderModSeq(ctx, oldFolderID); err != nil {
+				return err
+			}
+		}
+	}
+	if state.MailboxID == "" || state.FolderID == "" {
+		return nil
+	}
+	if !replace && state.RawPath != "" {
+		if ok, err := a.pathIsUnderMaildirRoot(state.RawPath); err != nil {
+			return err
+		} else if ok {
+			if _, err := os.Stat(state.RawPath); err == nil {
+				return nil
+			} else if !errors.Is(err, os.ErrNotExist) {
+				return err
+			}
+		}
+	}
+	mb, err := a.maildirMailboxByID(ctx, state.MailboxID)
+	if err != nil {
+		return err
+	}
+	folderName, err := a.folderNameByID(ctx, state.FolderID)
+	if err != nil {
+		return err
+	}
+	base := filepath.Join(strings.TrimSpace(a.cfg.MaildirRoot), mb.Domain, mb.LocalPart, "Maildir")
+	folderBase := maildirFolderPath(base, folderName)
+	subdir := "cur"
+	if strings.EqualFold(folderName, "Inbox") && !state.IsRead {
+		subdir = "new"
+	}
+	if err := ensureMaildirFolderDirs(base, folderBase); err != nil {
+		return err
+	}
+	filename := maildirFilename(messageID, state.MessageID)
+	tmpPath := filepath.Join(folderBase, "tmp", filename)
+	finalPath := filepath.Join(folderBase, subdir, filename)
+	finalPath = maildirPathWithFlags(finalPath, state.IsRead, state.IsStarred)
+	if err := os.WriteFile(tmpPath, raw, 0o600); err != nil {
+		return err
+	}
+	if err := applyMaildirOwnership(tmpPath); err != nil {
+		_ = os.Remove(tmpPath)
+		return err
+	}
+	if err := os.Rename(tmpPath, finalPath); err != nil {
+		_ = os.Remove(tmpPath)
+		return err
+	}
+	if replace || state.RawPath != "" {
+		a.removeMaildirPath(ctx, state.RawPath)
+	}
+	if updateFolder {
+		if state.IMAPUID > 0 && folderID == "" {
+			modSeq, metaErr := a.bumpFolderModSeq(ctx, state.FolderID)
+			if metaErr != nil {
+				return metaErr
+			}
+			_, err = a.db.ExecContext(ctx, `UPDATE messages SET folder_id=?,raw_path=?,imap_modseq=CASE WHEN ? > 0 THEN ? ELSE imap_modseq END,updated_at=? WHERE id=?`, state.FolderID, finalPath, modSeq, modSeq, a.now().UTC().Format(time.RFC3339Nano), messageID)
+		} else {
+			meta, metaErr := a.nextIMAPMetadata(ctx, a.db, state.FolderID)
+			if metaErr != nil {
+				return metaErr
+			}
+			_, err = a.db.ExecContext(ctx, `UPDATE messages SET folder_id=?,raw_path=?,imap_uid=?,imap_modseq=?,updated_at=? WHERE id=?`, state.FolderID, finalPath, meta.UID, meta.ModSeq, a.now().UTC().Format(time.RFC3339Nano), messageID)
+		}
+	} else {
+		modSeq, metaErr := a.bumpFolderModSeq(ctx, state.FolderID)
+		if metaErr != nil {
+			return metaErr
+		}
+		_, err = a.db.ExecContext(ctx, `UPDATE messages SET raw_path=?,imap_modseq=CASE WHEN ? > 0 THEN ? ELSE imap_modseq END,updated_at=? WHERE id=?`, finalPath, modSeq, modSeq, a.now().UTC().Format(time.RFC3339Nano), messageID)
+	}
+	return err
+}
+
+func (a *App) moveMessageMaildir(ctx context.Context, messageID, targetFolderID string) error {
+	if strings.TrimSpace(a.cfg.MaildirRoot) == "" {
+		state, stateErr := a.maildirMessageState(ctx, messageID)
+		if stateErr != nil {
+			return stateErr
+		}
+		if state.FolderID != "" && state.FolderID != targetFolderID {
+			if _, err := a.bumpFolderModSeq(ctx, state.FolderID); err != nil {
+				return err
+			}
+		}
+		meta, metaErr := a.nextIMAPMetadata(ctx, a.db, targetFolderID)
+		if metaErr != nil {
+			return metaErr
+		}
+		_, err := a.db.ExecContext(ctx, `UPDATE messages SET folder_id=?,imap_uid=?,imap_modseq=?,updated_at=? WHERE id=?`, targetFolderID, meta.UID, meta.ModSeq, a.now().UTC().Format(time.RFC3339Nano), messageID)
+		return err
+	}
+	state, err := a.maildirMessageState(ctx, messageID)
+	if err != nil {
+		return err
+	}
+	if state.MailboxID == "" {
+		return nil
+	}
+	state.FolderID = targetFolderID
+	if state.RawPath == "" {
+		return a.writeMessageToNewMaildirFolder(ctx, messageID, targetFolderID)
+	}
+	ok, err := a.pathIsUnderMaildirRoot(state.RawPath)
+	if err != nil {
+		return err
+	}
+	if !ok {
+		return a.writeMessageToNewMaildirFolder(ctx, messageID, targetFolderID)
+	}
+	if _, err := os.Stat(state.RawPath); err != nil {
+		if errors.Is(err, os.ErrNotExist) {
+			return a.writeMessageToNewMaildirFolder(ctx, messageID, targetFolderID)
+		}
+		return err
+	}
+	mb, err := a.maildirMailboxByID(ctx, state.MailboxID)
+	if err != nil {
+		return err
+	}
+	folderName, err := a.folderNameByID(ctx, targetFolderID)
+	if err != nil {
+		return err
+	}
+	base := filepath.Join(strings.TrimSpace(a.cfg.MaildirRoot), mb.Domain, mb.LocalPart, "Maildir")
+	folderBase := maildirFolderPath(base, folderName)
+	if err := ensureMaildirFolderDirs(base, folderBase); err != nil {
+		return err
+	}
+	subdir := "cur"
+	if strings.EqualFold(folderName, "Inbox") && !state.IsRead {
+		subdir = "new"
+	}
+	targetPath := filepath.Join(folderBase, subdir, filepath.Base(state.RawPath))
+	if filepath.Clean(targetPath) != filepath.Clean(state.RawPath) {
+		if err := os.Rename(state.RawPath, targetPath); err != nil {
+			return err
+		}
+		if err := applyMaildirOwnership(targetPath); err != nil {
+			return err
+		}
+	}
+	if state.FolderID != "" && state.FolderID != targetFolderID {
+		if _, err := a.bumpFolderModSeq(ctx, state.FolderID); err != nil {
+			return err
+		}
+	}
+	meta, err := a.nextIMAPMetadata(ctx, a.db, targetFolderID)
+	if err != nil {
+		return err
+	}
+	_, err = a.db.ExecContext(ctx, `UPDATE messages SET folder_id=?,raw_path=?,imap_uid=?,imap_modseq=?,updated_at=? WHERE id=?`, targetFolderID, targetPath, meta.UID, meta.ModSeq, a.now().UTC().Format(time.RFC3339Nano), messageID)
+	return err
+}
+
+func (a *App) writeMessageToNewMaildirFolder(ctx context.Context, messageID, folderID string) error {
+	msg, err := a.storedMessageByID(ctx, messageID)
+	if err != nil {
+		return err
+	}
+	msg.FolderID = folderID
+	attachments, err := a.attachmentInputsForMessage(ctx, messageID)
+	if err != nil {
+		return err
+	}
+	raw, err := BuildMIME(MIMEMessage{
+		From:        msg.From,
+		FromName:    msg.FromName,
+		To:          msg.To,
+		CC:          msg.CC,
+		BCC:         msg.BCC,
+		Subject:     msg.Subject,
+		Text:        msg.BodyText,
+		HTML:        msg.BodyHTML,
+		MessageID:   msg.MessageID,
+		Date:        messageDate(msg),
+		Attachments: attachments,
+	})
+	if err != nil {
+		return err
+	}
+	return a.writeRawMessageToMaildirFolder(ctx, messageID, folderID, raw, true, true)
+}
+
+func (a *App) deleteMessageMaildirFile(ctx context.Context, messageID string) {
+	var rawPath string
+	if err := a.db.QueryRowContext(ctx, `SELECT raw_path FROM messages WHERE id=?`, messageID).Scan(&rawPath); err != nil {
+		return
+	}
+	a.removeMaildirPath(ctx, rawPath)
+}
+
+func (a *App) updateMessageMaildirFlags(ctx context.Context, messageID string, read, starred *bool) error {
+	if strings.TrimSpace(a.cfg.MaildirRoot) == "" {
+		return nil
+	}
+	state, err := a.maildirMessageState(ctx, messageID)
+	if err != nil {
+		return err
+	}
+	if state.RawPath == "" {
+		return nil
+	}
+	ok, err := a.pathIsUnderMaildirRoot(state.RawPath)
+	if err != nil {
+		return err
+	}
+	if !ok {
+		return nil
+	}
+	if _, err := os.Stat(state.RawPath); err != nil {
+		if errors.Is(err, os.ErrNotExist) {
+			return nil
+		}
+		return err
+	}
+	currentRead := state.IsRead
+	currentStarred := state.IsStarred
+	if read != nil {
+		currentRead = *read
+	}
+	if starred != nil {
+		currentStarred = *starred
+	}
+	targetPath := maildirPathWithFlags(state.RawPath, currentRead, currentStarred)
+	if filepath.Clean(targetPath) == filepath.Clean(state.RawPath) {
+		return nil
+	}
+	if err := os.MkdirAll(filepath.Dir(targetPath), 0o755); err != nil {
+		return err
+	}
+	if err := os.Rename(state.RawPath, targetPath); err != nil {
+		return err
+	}
+	if err := applyMaildirOwnership(targetPath); err != nil {
+		return err
+	}
+	modSeq, err := a.bumpFolderModSeq(ctx, state.FolderID)
+	if err != nil {
+		return err
+	}
+	_, err = a.db.ExecContext(ctx, `UPDATE messages SET raw_path=?,imap_modseq=CASE WHEN ? > 0 THEN ? ELSE imap_modseq END,updated_at=? WHERE id=?`, targetPath, modSeq, modSeq, a.now().UTC().Format(time.RFC3339Nano), messageID)
+	return err
+}
+
+func (a *App) removeMaildirPath(ctx context.Context, rawPath string) {
+	rawPath = strings.TrimSpace(rawPath)
+	if rawPath == "" {
+		return
+	}
+	ok, err := a.pathIsUnderMaildirRoot(rawPath)
+	if err != nil || !ok {
+		if err != nil {
+			a.log.Warn("failed to validate maildir path", "path", rawPath, "error", err)
+		}
+		return
+	}
+	if err := os.Remove(rawPath); err != nil && !errors.Is(err, os.ErrNotExist) {
+		a.log.Warn("failed to remove maildir message", "path", rawPath, "error", err)
+	}
+}
+
+func (a *App) backfillSQLiteMessagesToMaildir(ctx context.Context) (int, error) {
+	if strings.TrimSpace(a.cfg.MaildirRoot) == "" {
+		return 0, nil
+	}
+	rows, err := a.db.QueryContext(ctx, `SELECT id FROM messages WHERE COALESCE(mailbox_id,'')<>'' AND COALESCE(folder_id,'')<>'' AND raw_path='' ORDER BY created_at LIMIT 100`)
+	if err != nil {
+		return 0, err
+	}
+	var ids []string
+	for rows.Next() {
+		select {
+		case <-ctx.Done():
+			rows.Close()
+			return 0, ctx.Err()
+		default:
+		}
+		var id string
+		if err := rows.Scan(&id); err != nil {
+			rows.Close()
+			return 0, err
+		}
+		ids = append(ids, id)
+	}
+	if err := rows.Err(); err != nil {
+		rows.Close()
+		return 0, err
+	}
+	if err := rows.Close(); err != nil {
+		return 0, err
+	}
+	count := 0
+	for _, id := range ids {
+		if err := a.rewriteMessageMaildir(ctx, id); err != nil {
+			return count, err
+		}
+		count++
+	}
+	return count, nil
+}
+
+type maildirMessageState struct {
+	MailboxID  string
+	FolderID   string
+	MessageID  string
+	RawPath    string
+	IsRead     bool
+	IsStarred  bool
+	IMAPUID    int64
+	IMAPModSeq int64
+}
+
+func (a *App) maildirMessageState(ctx context.Context, id string) (maildirMessageState, error) {
+	var state maildirMessageState
+	var mailboxID, folderID sql.NullString
+	var read, starred int
+	err := a.db.QueryRowContext(ctx, `SELECT mailbox_id,folder_id,message_id,raw_path,is_read,is_starred,imap_uid,imap_modseq FROM messages WHERE id=?`, id).Scan(&mailboxID, &folderID, &state.MessageID, &state.RawPath, &read, &starred, &state.IMAPUID, &state.IMAPModSeq)
+	if err != nil {
+		return state, err
+	}
+	state.MailboxID = mailboxID.String
+	state.FolderID = folderID.String
+	state.IsRead = intBool(read)
+	state.IsStarred = intBool(starred)
+	return state, nil
+}
+
+func (a *App) storedMessageByID(ctx context.Context, id string) (storedMessage, error) {
+	row := a.db.QueryRowContext(ctx, `SELECT COALESCE(mailbox_id,''),COALESCE(folder_id,''),recipient_addr,message_uid,message_id,subject,from_addr,from_name,to_addrs,cc_addrs,bcc_addrs,sent_at,received_at,snippet,body_text,body_html,is_read,is_starred,raw_path FROM messages WHERE id=?`, id)
+	var msg storedMessage
+	var toJSON, ccJSON, bccJSON, sent, received string
+	var read, starred int
+	err := row.Scan(&msg.MailboxID, &msg.FolderID, &msg.RecipientAddr, &msg.MessageUID, &msg.MessageID, &msg.Subject, &msg.From, &msg.FromName, &toJSON, &ccJSON, &bccJSON, &sent, &received, &msg.Snippet, &msg.BodyText, &msg.BodyHTML, &read, &starred, &msg.RawPath)
+	if err != nil {
+		return msg, err
+	}
+	msg.To = jsonDecodeSlice(toJSON)
+	msg.CC = jsonDecodeSlice(ccJSON)
+	msg.BCC = jsonDecodeSlice(bccJSON)
+	msg.SentAt = parseTime(sent)
+	msg.ReceivedAt = parseTime(received)
+	msg.IsRead = intBool(read)
+	msg.IsStarred = intBool(starred)
+	return msg, nil
+}
+
+func (a *App) attachmentInputsForMessage(ctx context.Context, messageID string) ([]AttachmentInput, error) {
+	rows, err := a.db.QueryContext(ctx, `SELECT filename,content_type,storage_path FROM attachments WHERE message_id=? ORDER BY filename`, messageID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var out []AttachmentInput
+	for rows.Next() {
+		var filename, contentType, storagePath string
+		if err := rows.Scan(&filename, &contentType, &storagePath); err != nil {
+			return nil, err
+		}
+		data, err := os.ReadFile(storagePath)
+		if err != nil {
+			return nil, err
+		}
+		out = append(out, AttachmentInput{Filename: filename, ContentType: contentType, ContentBase64: base64.StdEncoding.EncodeToString(data)})
+	}
+	return out, rows.Err()
+}
+
+func (a *App) maildirMailboxByID(ctx context.Context, mailboxID string) (maildirMailbox, error) {
+	var mb maildirMailbox
+	err := a.db.QueryRowContext(ctx, `SELECT m.id,m.address,m.local_part,d.name FROM mailboxes m JOIN domains d ON d.id=m.domain_id WHERE m.id=?`, mailboxID).Scan(&mb.ID, &mb.Address, &mb.LocalPart, &mb.Domain)
+	return mb, err
+}
+
+func (a *App) folderNameByID(ctx context.Context, folderID string) (string, error) {
+	var name string
+	err := a.db.QueryRowContext(ctx, `SELECT name FROM folders WHERE id=?`, folderID).Scan(&name)
+	return name, err
+}
+
+func (a *App) pathIsUnderMaildirRoot(path string) (bool, error) {
+	root := strings.TrimSpace(a.cfg.MaildirRoot)
+	if root == "" || strings.TrimSpace(path) == "" {
+		return false, nil
+	}
+	rootAbs, err := filepath.Abs(root)
+	if err != nil {
+		return false, err
+	}
+	pathAbs, err := filepath.Abs(path)
+	if err != nil {
+		return false, err
+	}
+	rel, err := filepath.Rel(rootAbs, pathAbs)
+	if err != nil {
+		return false, err
+	}
+	return rel != "." && !strings.HasPrefix(rel, ".."+string(filepath.Separator)) && rel != "..", nil
+}
+
+func ensureMaildirFolderDirs(base, folderBase string) error {
+	for _, sub := range []string{"tmp", "new", "cur"} {
+		if err := os.MkdirAll(filepath.Join(folderBase, sub), 0o755); err != nil {
+			return err
+		}
+	}
+	for _, dir := range maildirOwnershipDirs(base, folderBase) {
+		if err := applyMaildirOwnership(dir); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func maildirOwnershipDirs(base, folderBase string) []string {
+	dirs := []string{
+		filepath.Dir(filepath.Dir(base)),
+		filepath.Dir(base),
+		base,
+	}
+	if filepath.Clean(folderBase) != filepath.Clean(base) {
+		dirs = append(dirs, folderBase)
+	}
+	dirs = append(dirs, filepath.Join(folderBase, "tmp"), filepath.Join(folderBase, "new"), filepath.Join(folderBase, "cur"))
+	return dirs
+}
+
+func maildirFilename(messageID, headerMessageID string) string {
+	base := strings.TrimSpace(headerMessageID)
+	if base == "" {
+		base = messageID
+	}
+	return fmt.Sprintf("%d.%s.%s", time.Now().UnixNano(), safeMaildirName(messageID), safeMaildirName(base))
+}
+
+func safeMaildirName(value string) string {
+	value = strings.Trim(value, "<>")
+	var b strings.Builder
+	for _, r := range value {
+		switch {
+		case r >= 'a' && r <= 'z', r >= 'A' && r <= 'Z', r >= '0' && r <= '9':
+			b.WriteRune(r)
+		case r == '.', r == '_', r == '-', r == '@':
+			b.WriteRune(r)
+		default:
+			b.WriteByte('_')
+		}
+	}
+	out := strings.Trim(b.String(), "._-")
+	if out == "" {
+		out = "message"
+	}
+	if len(out) > 120 {
+		out = out[:120]
+	}
+	return out
+}
+
+func messageDate(msg storedMessage) time.Time {
+	if !msg.SentAt.IsZero() {
+		return msg.SentAt
+	}
+	if !msg.ReceivedAt.IsZero() {
+		return msg.ReceivedAt
+	}
+	return time.Now().UTC()
+}
+
+func maildirPathWithFlags(path string, read, starred bool) string {
+	dir := filepath.Dir(path)
+	name := filepath.Base(path)
+	if read || starred {
+		dir = filepath.Join(filepath.Dir(dir), "cur")
+	} else if filepath.Base(dir) == "cur" {
+		dir = filepath.Join(filepath.Dir(dir), "new")
+	}
+	base := name
+	sep := maildirFlagSeparator()
+	existingFlags := ""
+	if idx := strings.LastIndex(base, sep); idx >= 0 {
+		existingFlags = base[idx+len(sep):]
+		base = base[:idx]
+	}
+	flags := preserveMaildirFlags(existingFlags, "SF")
+	if read {
+		flags = appendMaildirFlag(flags, 'S')
+	}
+	if starred {
+		flags = appendMaildirFlag(flags, 'F')
+	}
+	if flags != "" {
+		base += sep + flags
+	}
+	return filepath.Join(dir, base)
+}
+
+func preserveMaildirFlags(flags, managed string) string {
+	var b strings.Builder
+	for _, flag := range flags {
+		if strings.ContainsRune(managed, flag) || strings.ContainsRune(b.String(), flag) {
+			continue
+		}
+		b.WriteRune(flag)
+	}
+	return b.String()
+}
+
+func appendMaildirFlag(flags string, flag rune) string {
+	if strings.ContainsRune(flags, flag) {
+		return flags
+	}
+	return flags + string(flag)
+}
+
+func maildirFlagSeparator() string {
+	if runtime.GOOS == "windows" {
+		return "!2,"
+	}
+	return ":2,"
+}

apps/api/internal/app/open_api_extended.go

@@ -0,0 +1,414 @@
+package app
+
+import (
+	"crypto/hmac"
+	"crypto/sha256"
+	"database/sql"
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"io"
+	"net/http"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/go-chi/chi/v5"
+)
+
+const deliveryWebhookMaxAge = 5 * time.Minute
+
+type deliveryWebhookEvent struct {
+	ID           string `json:"id"`
+	Provider     string `json:"provider"`
+	QueueID      string `json:"queueId"`
+	MessageID    string `json:"messageId"`
+	RFCMessageID string `json:"rfcMessageId"`
+	Recipient    string `json:"recipient"`
+	Status       string `json:"status"`
+	Reason       string `json:"reason"`
+	OccurredAt   string `json:"occurredAt"`
+}
+
+func (a *App) handleOpenAPIDeliveryWebhook(w http.ResponseWriter, r *http.Request) {
+	secret := strings.TrimSpace(a.cfg.DeliveryWebhookSecret)
+	if secret == "" {
+		respondError(w, http.StatusServiceUnavailable, "delivery webhook is not configured")
+		return
+	}
+	timestamp := strings.TrimSpace(r.Header.Get("X-LanQin-Timestamp"))
+	signature := strings.TrimPrefix(strings.TrimSpace(r.Header.Get("X-LanQin-Signature")), "sha256=")
+	unix, err := strconv.ParseInt(timestamp, 10, 64)
+	if err != nil || signature == "" {
+		respondError(w, http.StatusUnauthorized, "invalid webhook signature")
+		return
+	}
+	signedAt := time.Unix(unix, 0)
+	if delta := a.now().UTC().Sub(signedAt); delta < -deliveryWebhookMaxAge || delta > deliveryWebhookMaxAge {
+		respondError(w, http.StatusUnauthorized, "webhook timestamp is outside the allowed window")
+		return
+	}
+	body, err := io.ReadAll(http.MaxBytesReader(w, r.Body, 1<<20))
+	if err != nil {
+		badRequest(w, errors.New("invalid webhook body"))
+		return
+	}
+	mac := hmac.New(sha256.New, []byte(secret))
+	_, _ = mac.Write([]byte(timestamp + "."))
+	_, _ = mac.Write(body)
+	expected, err := hex.DecodeString(signature)
+	if err != nil || !hmac.Equal(mac.Sum(nil), expected) {
+		respondError(w, http.StatusUnauthorized, "invalid webhook signature")
+		return
+	}
+	var payload struct {
+		Events []deliveryWebhookEvent `json:"events"`
+	}
+	dec := json.NewDecoder(strings.NewReader(string(body)))
+	dec.DisallowUnknownFields()
+	if err := dec.Decode(&payload); err != nil || len(payload.Events) == 0 || len(payload.Events) > 100 {
+		badRequest(w, errors.New("events must contain between 1 and 100 items"))
+		return
+	}
+	accepted := 0
+	tx, err := a.db.BeginTx(r.Context(), nil)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to start delivery event transaction")
+		return
+	}
+	defer tx.Rollback()
+	for _, event := range payload.Events {
+		inserted, err := a.storeDeliveryEvent(r, tx, event)
+		if err != nil {
+			badRequest(w, err)
+			return
+		}
+		if inserted {
+			accepted++
+		}
+	}
+	if err := tx.Commit(); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to store delivery events")
+		return
+	}
+	respondJSON(w, http.StatusOK, map[string]any{"ok": true, "accepted": accepted, "duplicates": len(payload.Events) - accepted})
+}
+
+func (a *App) storeDeliveryEvent(r *http.Request, tx *sql.Tx, event deliveryWebhookEvent) (bool, error) {
+	event.ID = strings.TrimSpace(event.ID)
+	event.Provider = strings.ToLower(strings.TrimSpace(event.Provider))
+	event.QueueID = strings.TrimSpace(event.QueueID)
+	event.MessageID = strings.TrimSpace(event.MessageID)
+	event.RFCMessageID = strings.TrimSpace(event.RFCMessageID)
+	event.Recipient = normalizeEmail(event.Recipient)
+	event.Status = strings.ToLower(strings.TrimSpace(event.Status))
+	if event.ID == "" || len(event.ID) > 200 || event.Provider == "" || len(event.Provider) > 80 || event.Recipient == "" || len(event.Recipient) > 320 || len(event.Reason) > 2000 || !validDeliveryEventStatus(event.Status) {
+		return false, errors.New("invalid delivery event")
+	}
+	if event.QueueID == "" && event.MessageID == "" && event.RFCMessageID == "" {
+		return false, errors.New("queueId, messageId, or rfcMessageId is required")
+	}
+	occurredAt, err := time.Parse(time.RFC3339Nano, event.OccurredAt)
+	if err != nil {
+		return false, errors.New("occurredAt must be an RFC3339 timestamp")
+	}
+	var queueID, sentMessageID, rfcMessageID string
+	err = tx.QueryRowContext(r.Context(), `SELECT id,sent_message_id,message_id FROM send_queue
+		WHERE (?<>'' AND id=?) OR (?<>'' AND sent_message_id=?) OR (?<>'' AND message_id=?)
+		ORDER BY created_at DESC LIMIT 1`, event.QueueID, event.QueueID, event.MessageID, event.MessageID, event.RFCMessageID, event.RFCMessageID).Scan(&queueID, &sentMessageID, &rfcMessageID)
+	if err != nil {
+		return false, errors.New("send item not found")
+	}
+	if (event.QueueID != "" && event.QueueID != queueID) || (event.MessageID != "" && event.MessageID != sentMessageID) || (event.RFCMessageID != "" && event.RFCMessageID != rfcMessageID) {
+		return false, errors.New("delivery event identifiers do not refer to the same send item")
+	}
+	var recipientsJSON string
+	if err := tx.QueryRowContext(r.Context(), `SELECT recipients_json FROM send_queue WHERE id=?`, queueID).Scan(&recipientsJSON); err != nil {
+		return false, errors.New("send item not found")
+	}
+	foundRecipient := false
+	for _, recipient := range jsonDecodeSlice(recipientsJSON) {
+		if normalizeEmail(recipient) == event.Recipient {
+			foundRecipient = true
+			break
+		}
+	}
+	if !foundRecipient {
+		return false, errors.New("delivery event recipient does not belong to the send item")
+	}
+	id := newID("dev")
+	createdAt := a.now().UTC()
+	reason := strings.TrimSpace(event.Reason)
+	res, err := tx.ExecContext(r.Context(), `INSERT OR IGNORE INTO delivery_events(id,external_id,provider,queue_id,sent_message_id,rfc_message_id,recipient,status,reason,occurred_at,created_at)
+		VALUES(?,?,?,?,?,?,?,?,?,?,?)`, id, event.ID, event.Provider, queueID, sentMessageID, rfcMessageID, event.Recipient, event.Status, reason, occurredAt.UTC().Format(time.RFC3339Nano), createdAt.Format(time.RFC3339Nano))
+	if err != nil {
+		return false, err
+	}
+	n, _ := res.RowsAffected()
+	if n > 0 {
+		item := DeliveryEvent{ID: id, ExternalID: event.ID, Provider: event.Provider, QueueID: queueID, MessageID: sentMessageID, RFCMessageID: rfcMessageID, Recipient: event.Recipient, Status: event.Status, Reason: reason, OccurredAt: occurredAt.UTC(), CreatedAt: createdAt}
+		var mailboxID string
+		if err := tx.QueryRowContext(r.Context(), `SELECT mailbox_id FROM send_queue WHERE id=?`, queueID).Scan(&mailboxID); err != nil {
+			return false, err
+		}
+		if err := a.enqueueStatusWebhook(r.Context(), tx, "delivery:"+event.Provider+":"+event.ID, "delivery."+event.Status, mailboxID, item); err != nil {
+			return false, err
+		}
+	}
+	return n > 0, nil
+}
+
+func validDeliveryEventStatus(status string) bool {
+	switch status {
+	case "delivered", "bounced", "complained", "rejected", "deferred":
+		return true
+	default:
+		return false
+	}
+}
+
+func (a *App) handleOpenAPIListSends(w http.ResponseWriter, r *http.Request) {
+	user := currentUser(r)
+	limit := parseOpenAPILimit(r, 30, 100)
+	where := "mb.user_id=?"
+	args := []any{user.ID}
+	if mailboxID := strings.TrimSpace(r.URL.Query().Get("mailboxId")); mailboxID != "" {
+		where += " AND sq.mailbox_id=?"
+		args = append(args, mailboxID)
+	}
+	if status := strings.TrimSpace(r.URL.Query().Get("status")); status != "" {
+		if !validSendQueueStatus(status) {
+			badRequest(w, errors.New("invalid send queue status"))
+			return
+		}
+		where += " AND sq.status=?"
+		args = append(args, status)
+	}
+	cursorCreatedAt, cursorID, _, err := parseSendQueueCursor(r.URL.Query().Get("cursor"))
+	if err != nil {
+		badRequest(w, err)
+		return
+	}
+	if cursorCreatedAt != "" {
+		where += " AND (sq.created_at<? OR (sq.created_at=? AND sq.id<?))"
+		args = append(args, cursorCreatedAt, cursorCreatedAt, cursorID)
+	}
+	args = append(args, limit+1)
+	rows, err := a.db.QueryContext(r.Context(), `SELECT sq.id,sq.mailbox_id,sq.sent_message_id,sq.message_id,COALESCE(m.subject,''),sq.source,sq.mail_from,sq.header_from,sq.recipients_json,sq.status,sq.attempt_count,sq.max_attempts,sq.next_attempt_at,sq.last_error,sq.created_at,sq.updated_at,sq.delivered_at
+		FROM send_queue sq JOIN mailboxes mb ON mb.id=sq.mailbox_id LEFT JOIN messages m ON m.id=sq.sent_message_id
+		WHERE `+where+` ORDER BY sq.created_at DESC,sq.id DESC LIMIT ?`, args...)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to list sends")
+		return
+	}
+	defer rows.Close()
+	items := []openAPISendStatus{}
+	for rows.Next() {
+		item, err := scanSendQueueEntry(rows)
+		if err != nil {
+			respondError(w, http.StatusInternalServerError, "failed to scan sends")
+			return
+		}
+		status := openAPISendStatusFromQueue(item, item.MailFrom)
+		a.applyDeliveryStatus(r.Context(), &status)
+		items = append(items, status)
+	}
+	if err := rows.Err(); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to list sends")
+		return
+	}
+	next := ""
+	if len(items) > limit {
+		items = items[:limit]
+		last := items[len(items)-1]
+		next = encodeSendQueueCursor(last.CreatedAt, last.QueueID)
+	}
+	respondJSON(w, http.StatusOK, map[string]any{"items": items, "nextCursor": next})
+}
+
+func (a *App) handleOpenAPISendEvents(w http.ResponseWriter, r *http.Request) {
+	item, err := a.resolveOpenAPISendQueue(r, chi.URLParam(r, "id"))
+	if err != nil {
+		respondError(w, http.StatusNotFound, "send item not found")
+		return
+	}
+	audit, err := a.sendAuditEvents(r, item.ID)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load send events")
+		return
+	}
+	delivery, err := a.deliveryEvents(r, item.SentMessageID)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load delivery events")
+		return
+	}
+	respondJSON(w, http.StatusOK, map[string]any{"auditEvents": audit, "deliveryEvents": delivery})
+}
+
+func (a *App) handleOpenAPIRetrySend(w http.ResponseWriter, r *http.Request) {
+	item, err := a.resolveOpenAPISendQueue(r, chi.URLParam(r, "id"))
+	if err != nil {
+		respondError(w, http.StatusNotFound, "send item not found")
+		return
+	}
+	if item.Status != sendQueueStatusFailed {
+		badRequest(w, errors.New("send item is not failed"))
+		return
+	}
+	now := a.now().UTC().Format(time.RFC3339Nano)
+	res, err := a.db.ExecContext(r.Context(), `UPDATE send_queue SET status=?,attempt_count=0,next_attempt_at=?,last_error='',updated_at=?,delivered_at=NULL WHERE id=? AND status=?`, sendQueueStatusQueued, now, now, item.ID, sendQueueStatusFailed)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to retry send item")
+		return
+	}
+	if affected, _ := res.RowsAffected(); affected == 0 {
+		respondError(w, http.StatusConflict, "send item status changed")
+		return
+	}
+	a.recordSendAudit(r.Context(), sendAuditRetry, sendQueueStatusQueued, sendAuditInputFromEntry(item, currentUser(r).ID, ""))
+	updated, _ := a.loadSendQueueEntryForUser(r.Context(), item.ID, currentUser(r).ID)
+	respondJSON(w, http.StatusOK, openAPISendStatusFromQueue(updated, updated.MailFrom))
+}
+
+func (a *App) handleOpenAPICancelSend(w http.ResponseWriter, r *http.Request) {
+	item, err := a.resolveOpenAPISendQueue(r, chi.URLParam(r, "id"))
+	if err != nil {
+		respondError(w, http.StatusNotFound, "send item not found")
+		return
+	}
+	if item.Status != sendQueueStatusQueued && item.Status != sendQueueStatusFailed {
+		badRequest(w, errors.New("send item cannot be canceled"))
+		return
+	}
+	now := a.now().UTC().Format(time.RFC3339Nano)
+	res, err := a.db.ExecContext(r.Context(), `UPDATE send_queue SET status=?,last_error='',updated_at=? WHERE id=? AND status IN (?,?)`, sendQueueStatusCanceled, now, item.ID, sendQueueStatusQueued, sendQueueStatusFailed)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to cancel send item")
+		return
+	}
+	if affected, _ := res.RowsAffected(); affected == 0 {
+		respondError(w, http.StatusConflict, "send item status changed")
+		return
+	}
+	a.recordSendAudit(r.Context(), sendAuditCanceled, sendQueueStatusCanceled, sendAuditInputFromEntry(item, currentUser(r).ID, ""))
+	updated, _ := a.loadSendQueueEntryForUser(r.Context(), item.ID, currentUser(r).ID)
+	respondJSON(w, http.StatusOK, openAPISendStatusFromQueue(updated, updated.MailFrom))
+}
+
+func sendAuditInputFromEntry(item SendQueueEntry, userID, errorText string) sendAuditInput {
+	return sendAuditInput{QueueID: item.ID, UserID: userID, MailboxID: item.MailboxID, SentMessageID: item.SentMessageID, Source: item.Source, MailFrom: item.MailFrom, HeaderFrom: item.HeaderFrom, Recipients: item.Recipients, Error: errorText}
+}
+
+func (a *App) resolveOpenAPISendQueue(r *http.Request, id string) (SendQueueEntry, error) {
+	user := currentUser(r)
+	if item, err := a.loadSendQueueEntryForUser(r.Context(), strings.TrimSpace(id), user.ID); err == nil {
+		return item, nil
+	}
+	return a.loadLatestSendQueueForMessage(r.Context(), strings.TrimSpace(id), user.ID)
+}
+
+func (a *App) handleOpenAPIMessage(w http.ResponseWriter, r *http.Request) {
+	msg, err := a.loadMessageForRequest(r, chi.URLParam(r, "id"), true)
+	if err != nil {
+		respondError(w, http.StatusNotFound, "message not found")
+		return
+	}
+	respondJSON(w, http.StatusOK, msg)
+}
+
+func (a *App) handleOpenAPIListAliases(w http.ResponseWriter, r *http.Request) {
+	limit := parseOpenAPILimit(r, 50, 100)
+	sortValue, cursorID, err := parseOpenAPIListCursor(r.URL.Query().Get("cursor"))
+	if err != nil {
+		badRequest(w, err)
+		return
+	}
+	rows, err := a.db.QueryContext(r.Context(), `SELECT id,domain_id,source,destination,enabled,created_at FROM aliases
+		WHERE (?='' OR source>? OR (source=? AND id>?)) ORDER BY source,id LIMIT ?`, sortValue, sortValue, sortValue, cursorID, limit+1)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to list aliases")
+		return
+	}
+	defer rows.Close()
+	items := []Alias{}
+	for rows.Next() {
+		item, err := scanOpenAPIAlias(rows)
+		if err != nil {
+			respondError(w, http.StatusInternalServerError, "failed to scan aliases")
+			return
+		}
+		items = append(items, item)
+	}
+	if err := rows.Err(); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to list aliases")
+		return
+	}
+	next := ""
+	if len(items) > limit {
+		items = items[:limit]
+		last := items[len(items)-1]
+		next = encodeOpenAPIListCursor(last.Source, last.ID)
+	}
+	respondJSON(w, http.StatusOK, map[string]any{"items": items, "nextCursor": next})
+}
+
+func (a *App) handleOpenAPIGetAlias(w http.ResponseWriter, r *http.Request) {
+	item, err := scanOpenAPIAlias(a.db.QueryRowContext(r.Context(), `SELECT id,domain_id,source,destination,enabled,created_at FROM aliases WHERE id=?`, chi.URLParam(r, "id")))
+	if err != nil {
+		respondError(w, http.StatusNotFound, "alias not found")
+		return
+	}
+	respondJSON(w, http.StatusOK, item)
+}
+
+type aliasScanner interface{ Scan(...any) error }
+
+func scanOpenAPIAlias(row aliasScanner) (Alias, error) {
+	var item Alias
+	var enabled int
+	var created string
+	err := row.Scan(&item.ID, &item.DomainID, &item.Source, &item.Destination, &enabled, &created)
+	item.Enabled = intBool(enabled)
+	item.CreatedAt = parseTime(created)
+	return item, err
+}
+
+func (a *App) sendAuditEvents(r *http.Request, queueID string) ([]SendAuditEvent, error) {
+	rows, err := a.db.QueryContext(r.Context(), `SELECT id,queue_id,mailbox_id,sent_message_id,source,event,status,mail_from,header_from,recipients_json,error,created_at FROM send_audit_events WHERE queue_id=? ORDER BY created_at,id`, queueID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	items := []SendAuditEvent{}
+	for rows.Next() {
+		var item SendAuditEvent
+		var recipientsJSON, createdAt string
+		if err := rows.Scan(&item.ID, &item.QueueID, &item.MailboxID, &item.SentMessageID, &item.Source, &item.Event, &item.Status, &item.MailFrom, &item.HeaderFrom, &recipientsJSON, &item.Error, &createdAt); err != nil {
+			return nil, err
+		}
+		item.Recipients = jsonDecodeSlice(recipientsJSON)
+		item.CreatedAt = parseTime(createdAt)
+		items = append(items, item)
+	}
+	return items, rows.Err()
+}
+
+func (a *App) deliveryEvents(r *http.Request, sentMessageID string) ([]DeliveryEvent, error) {
+	rows, err := a.db.QueryContext(r.Context(), `SELECT id,external_id,provider,queue_id,sent_message_id,rfc_message_id,recipient,status,reason,occurred_at,created_at FROM delivery_events WHERE sent_message_id=? ORDER BY occurred_at,id`, sentMessageID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	items := []DeliveryEvent{}
+	for rows.Next() {
+		var item DeliveryEvent
+		var occurredAt, createdAt string
+		if err := rows.Scan(&item.ID, &item.ExternalID, &item.Provider, &item.QueueID, &item.MessageID, &item.RFCMessageID, &item.Recipient, &item.Status, &item.Reason, &occurredAt, &createdAt); err != nil {
+			return nil, err
+		}
+		item.OccurredAt = parseTime(occurredAt)
+		item.CreatedAt = parseTime(createdAt)
+		items = append(items, item)
+	}
+	return items, rows.Err()
+}

apps/api/internal/app/open_api_handlers.go

@@ -0,0 +1,937 @@
+package app
+
+import (
+	"context"
+	"crypto/sha256"
+	"database/sql"
+	"encoding/base64"
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"net/http"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/go-chi/chi/v5"
+	"golang.org/x/crypto/bcrypt"
+)
+
+func (a *App) handleOpenAPIListDomains(w http.ResponseWriter, r *http.Request) {
+	limit := parseOpenAPILimit(r, 50, 100)
+	sortValue, cursorID, err := parseOpenAPIListCursor(r.URL.Query().Get("cursor"))
+	if err != nil {
+		badRequest(w, err)
+		return
+	}
+	rows, err := a.db.QueryContext(r.Context(), `SELECT id,name,status,dkim_selector,dkim_public_key,dns_status,dns_checked_at,created_at FROM domains
+		WHERE (?='' OR name>? OR (name=? AND id>?)) ORDER BY name,id LIMIT ?`, sortValue, sortValue, sortValue, cursorID, limit+1)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to list domains")
+		return
+	}
+	defer rows.Close()
+	items := []Domain{}
+	for rows.Next() {
+		item, err := scanDomain(rows)
+		if err != nil {
+			respondError(w, http.StatusInternalServerError, "failed to scan domains")
+			return
+		}
+		items = append(items, item)
+	}
+	if err := rows.Err(); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to list domains")
+		return
+	}
+	next := ""
+	if len(items) > limit {
+		items = items[:limit]
+		last := items[len(items)-1]
+		next = encodeOpenAPIListCursor(last.Name, last.ID)
+	}
+	respondJSON(w, http.StatusOK, map[string]any{"items": items, "nextCursor": next})
+}
+
+func (a *App) handleOpenAPICreateDomain(w http.ResponseWriter, r *http.Request) {
+	var req struct {
+		Name string `json:"name"`
+	}
+	if err := decodeJSON(r, &req); err != nil {
+		badRequest(w, err)
+		return
+	}
+	id, err := a.createDomainTx(r.Context(), nil, req.Name)
+	if err != nil {
+		badRequest(w, err)
+		return
+	}
+	domain, err := a.domainByID(r.Context(), id)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load domain")
+		return
+	}
+	respondJSON(w, http.StatusCreated, domain)
+}
+
+func (a *App) handleOpenAPIGetDomain(w http.ResponseWriter, r *http.Request) {
+	domain, err := a.domainByID(r.Context(), chi.URLParam(r, "id"))
+	if err != nil {
+		respondError(w, http.StatusNotFound, "domain not found")
+		return
+	}
+	respondJSON(w, http.StatusOK, domain)
+}
+
+func (a *App) handleOpenAPIUpdateDomain(w http.ResponseWriter, r *http.Request) {
+	var req struct {
+		Status string `json:"status"`
+	}
+	if err := decodeJSON(r, &req); err != nil {
+		badRequest(w, err)
+		return
+	}
+	status := strings.TrimSpace(req.Status)
+	if status != "active" && status != "disabled" {
+		badRequest(w, errors.New("invalid status"))
+		return
+	}
+	id := chi.URLParam(r, "id")
+	res, err := a.db.ExecContext(r.Context(), `UPDATE domains SET status=?, updated_at=? WHERE id=?`, status, a.now().UTC().Format(time.RFC3339Nano), id)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to update domain")
+		return
+	}
+	if affected, _ := res.RowsAffected(); affected == 0 {
+		respondError(w, http.StatusNotFound, "domain not found")
+		return
+	}
+	domain, err := a.domainByID(r.Context(), id)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load domain")
+		return
+	}
+	respondJSON(w, http.StatusOK, domain)
+}
+
+func (a *App) handleOpenAPIDeleteDomain(w http.ResponseWriter, r *http.Request) {
+	id := chi.URLParam(r, "id")
+	var count int
+	if err := a.db.QueryRowContext(r.Context(), `SELECT COUNT(*) FROM mailboxes WHERE domain_id=?`, id).Scan(&count); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to check domain")
+		return
+	}
+	if count > 0 {
+		badRequest(w, errors.New("domain still has mailboxes"))
+		return
+	}
+	res, err := a.db.ExecContext(r.Context(), `DELETE FROM domains WHERE id=?`, id)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to delete domain")
+		return
+	}
+	if affected, _ := res.RowsAffected(); affected == 0 {
+		respondError(w, http.StatusNotFound, "domain not found")
+		return
+	}
+	respondJSON(w, http.StatusOK, map[string]any{"ok": true})
+}
+
+func (a *App) handleOpenAPIListMailboxes(w http.ResponseWriter, r *http.Request) {
+	limit := parseOpenAPILimit(r, 50, 100)
+	sortValue, cursorID, err := parseOpenAPIListCursor(r.URL.Query().Get("cursor"))
+	if err != nil {
+		badRequest(w, err)
+		return
+	}
+	rows, err := a.db.QueryContext(r.Context(), `SELECT mb.id,mb.user_id,u.email,mb.domain_id,mb.local_part,mb.address,mb.display_name,mb.quota_mb,mb.status,mb.created_at
+		FROM mailboxes mb JOIN users u ON u.id=mb.user_id
+		WHERE (?='' OR mb.address>? OR (mb.address=? AND mb.id>?)) ORDER BY mb.address,mb.id LIMIT ?`, sortValue, sortValue, sortValue, cursorID, limit+1)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to list mailboxes")
+		return
+	}
+	defer rows.Close()
+	items := []Mailbox{}
+	for rows.Next() {
+		item, err := scanMailbox(rows)
+		if err != nil {
+			respondError(w, http.StatusInternalServerError, "failed to scan mailboxes")
+			return
+		}
+		items = append(items, item)
+	}
+	if err := rows.Err(); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to list mailboxes")
+		return
+	}
+	next := ""
+	if len(items) > limit {
+		items = items[:limit]
+		last := items[len(items)-1]
+		next = encodeOpenAPIListCursor(last.Address, last.ID)
+	}
+	respondJSON(w, http.StatusOK, map[string]any{"items": items, "nextCursor": next})
+}
+
+func (a *App) handleOpenAPICreateMailbox(w http.ResponseWriter, r *http.Request) {
+	var req struct {
+		DomainID    string `json:"domainId"`
+		LocalPart   string `json:"localPart"`
+		DisplayName string `json:"displayName"`
+		Password    string `json:"password"`
+		QuotaMB     int    `json:"quotaMb"`
+		OwnerEmail  string `json:"ownerEmail"`
+		UserID      string `json:"userId"`
+	}
+	if err := decodeJSON(r, &req); err != nil {
+		badRequest(w, err)
+		return
+	}
+	if err := requireString("domainId", req.DomainID); err != nil {
+		badRequest(w, err)
+		return
+	}
+	if err := requireString("localPart", req.LocalPart); err != nil {
+		badRequest(w, err)
+		return
+	}
+	if len(req.Password) < 8 {
+		badRequest(w, errors.New("password must be at least 8 characters"))
+		return
+	}
+	domain, err := a.domainByID(r.Context(), req.DomainID)
+	if err != nil {
+		respondError(w, http.StatusNotFound, "domain not found")
+		return
+	}
+	localPart := normalizeLocalPart(req.LocalPart)
+	if localPart == "" {
+		badRequest(w, errors.New("localPart is required"))
+		return
+	}
+	address := localPart + "@" + domain.Name
+	displayName := strings.TrimSpace(req.DisplayName)
+	if displayName == "" {
+		displayName = address
+	}
+	passwordHash, err := bcrypt.GenerateFromPassword([]byte(req.Password), bcrypt.DefaultCost)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to hash password")
+		return
+	}
+	tx, err := a.db.BeginTx(r.Context(), nil)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to start transaction")
+		return
+	}
+	defer tx.Rollback()
+	userID, err := a.resolveMailboxOwnerTx(r.Context(), tx, req.UserID, req.OwnerEmail, address, displayName, string(passwordHash))
+	if err != nil {
+		respondMailboxOwnerError(w, err)
+		return
+	}
+	mailboxID, err := a.createMailboxWithPasswordHashTx(r.Context(), tx, userID, req.DomainID, localPart, displayName, string(passwordHash), req.QuotaMB, "active")
+	if err != nil {
+		badRequest(w, err)
+		return
+	}
+	if err := tx.Commit(); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to create mailbox")
+		return
+	}
+	mailbox, err := a.mailboxByID(r.Context(), mailboxID)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load mailbox")
+		return
+	}
+	respondJSON(w, http.StatusCreated, mailbox)
+}
+
+func (a *App) handleOpenAPIGetMailbox(w http.ResponseWriter, r *http.Request) {
+	mailbox, err := a.mailboxByID(r.Context(), chi.URLParam(r, "id"))
+	if err != nil {
+		respondError(w, http.StatusNotFound, "mailbox not found")
+		return
+	}
+	respondJSON(w, http.StatusOK, mailbox)
+}
+
+func (a *App) handleOpenAPIUpdateMailbox(w http.ResponseWriter, r *http.Request) {
+	id := chi.URLParam(r, "id")
+	current, err := a.mailboxByID(r.Context(), id)
+	if err != nil {
+		respondError(w, http.StatusNotFound, "mailbox not found")
+		return
+	}
+	var req struct {
+		DisplayName string `json:"displayName"`
+		QuotaMB     int    `json:"quotaMb"`
+		Status      string `json:"status"`
+		UserID      string `json:"userId"`
+	}
+	if err := decodeJSON(r, &req); err != nil {
+		badRequest(w, err)
+		return
+	}
+	displayName := strings.TrimSpace(req.DisplayName)
+	if displayName == "" {
+		displayName = current.DisplayName
+	}
+	quotaMB := req.QuotaMB
+	if quotaMB <= 0 {
+		quotaMB = current.QuotaMB
+	}
+	status := strings.TrimSpace(req.Status)
+	if status == "" {
+		status = current.Status
+	}
+	if status != "active" && status != "disabled" {
+		badRequest(w, errors.New("invalid status"))
+		return
+	}
+	userID := strings.TrimSpace(req.UserID)
+	if userID == "" {
+		userID = current.UserID
+	}
+	if err := a.ensureActiveUserExists(r.Context(), userID); err != nil {
+		respondMailboxOwnerError(w, err)
+		return
+	}
+	res, err := a.db.ExecContext(r.Context(), `UPDATE mailboxes SET user_id=?,display_name=?,quota_mb=?,status=?,updated_at=? WHERE id=?`,
+		userID, displayName, quotaMB, status, a.now().UTC().Format(time.RFC3339Nano), id)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to update mailbox")
+		return
+	}
+	if affected, _ := res.RowsAffected(); affected == 0 {
+		respondError(w, http.StatusNotFound, "mailbox not found")
+		return
+	}
+	mailbox, err := a.mailboxByID(r.Context(), id)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load mailbox")
+		return
+	}
+	respondJSON(w, http.StatusOK, mailbox)
+}
+
+func (a *App) handleOpenAPIDeleteMailbox(w http.ResponseWriter, r *http.Request) {
+	id := chi.URLParam(r, "id")
+	var owner string
+	if err := a.db.QueryRowContext(r.Context(), `SELECT user_id FROM mailboxes WHERE id=?`, id).Scan(&owner); err != nil {
+		respondError(w, http.StatusNotFound, "mailbox not found")
+		return
+	}
+	current := currentUser(r)
+	if current != nil && owner == current.ID {
+		var count int
+		if err := a.db.QueryRowContext(r.Context(), `SELECT COUNT(*) FROM mailboxes WHERE user_id=?`, owner).Scan(&count); err != nil {
+			respondError(w, http.StatusInternalServerError, "failed to check mailbox")
+			return
+		}
+		if count <= 1 {
+			badRequest(w, errors.New("cannot delete your last mailbox"))
+			return
+		}
+	}
+	rows, err := a.db.QueryContext(r.Context(), `SELECT id FROM messages WHERE mailbox_id=?`, id)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load mailbox messages")
+		return
+	}
+	messageIDs := []string{}
+	for rows.Next() {
+		var messageID string
+		if rows.Scan(&messageID) == nil {
+			messageIDs = append(messageIDs, messageID)
+		}
+	}
+	rows.Close()
+	for _, messageID := range messageIDs {
+		a.deleteMessage(r.Context(), messageID)
+	}
+	res, err := a.db.ExecContext(r.Context(), `DELETE FROM mailboxes WHERE id=?`, id)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to delete mailbox")
+		return
+	}
+	if affected, _ := res.RowsAffected(); affected == 0 {
+		respondError(w, http.StatusNotFound, "mailbox not found")
+		return
+	}
+	respondJSON(w, http.StatusOK, map[string]any{"ok": true})
+}
+
+func (a *App) handleOpenAPIResetMailboxPassword(w http.ResponseWriter, r *http.Request) {
+	var req struct {
+		Password string `json:"password"`
+	}
+	if err := decodeJSON(r, &req); err != nil {
+		badRequest(w, err)
+		return
+	}
+	if len(req.Password) < 8 {
+		badRequest(w, errors.New("password must be at least 8 characters"))
+		return
+	}
+	var userID string
+	if err := a.db.QueryRowContext(r.Context(), `SELECT user_id FROM mailboxes WHERE id=?`, chi.URLParam(r, "id")).Scan(&userID); err != nil {
+		respondError(w, http.StatusNotFound, "mailbox not found")
+		return
+	}
+	hash, err := bcrypt.GenerateFromPassword([]byte(req.Password), bcrypt.DefaultCost)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to hash password")
+		return
+	}
+	now := a.now().UTC().Format(time.RFC3339Nano)
+	tx, err := a.db.BeginTx(r.Context(), nil)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to start transaction")
+		return
+	}
+	defer tx.Rollback()
+	if _, err := tx.ExecContext(r.Context(), `UPDATE users SET password_hash=?,updated_at=? WHERE id=?`, string(hash), now, userID); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to reset password")
+		return
+	}
+	res, err := tx.ExecContext(r.Context(), `UPDATE mailboxes SET password_hash=?,updated_at=? WHERE user_id=?`, string(hash), now, userID)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to reset mailbox passwords")
+		return
+	}
+	if err := tx.Commit(); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to save password")
+		return
+	}
+	affected, _ := res.RowsAffected()
+	respondJSON(w, http.StatusOK, map[string]any{"ok": true, "affectedMailboxes": affected})
+}
+
+func (a *App) handleOpenAPISendMail(w http.ResponseWriter, r *http.Request) {
+	var req mailComposeInput
+	if err := decodeJSON(r, &req); err != nil {
+		badRequest(w, err)
+		return
+	}
+	mb, err := a.mailboxForCurrentUserWithID(r, req.MailboxID)
+	if err != nil {
+		respondError(w, http.StatusNotFound, "mailbox not found")
+		return
+	}
+	idempotencyKey := strings.TrimSpace(r.Header.Get("Idempotency-Key"))
+	requestJSON, _ := json.Marshal(req)
+	requestSum := sha256.Sum256(requestJSON)
+	requestHash := hex.EncodeToString(requestSum[:])
+	if idempotencyKey != "" {
+		if len(idempotencyKey) > 128 || strings.ContainsAny(idempotencyKey, "\r\n") {
+			badRequest(w, errors.New("invalid Idempotency-Key"))
+			return
+		}
+		status, replayed, err := a.reserveOpenAPISendIdempotency(r.Context(), currentUser(r).ID, idempotencyKey, requestHash)
+		if err != nil {
+			respondError(w, http.StatusConflict, err.Error())
+			return
+		}
+		if replayed {
+			w.Header().Set("Idempotency-Replayed", "true")
+			respondJSON(w, http.StatusOK, status)
+			return
+		}
+	}
+	msg, err := a.sendMailWithSource(r.Context(), currentUser(r), mb, req, sendSourceOpenAPI)
+	if err != nil {
+		if idempotencyKey != "" {
+			_, _ = a.db.ExecContext(r.Context(), `DELETE FROM send_idempotency_keys WHERE user_id=? AND idempotency_key=? AND sent_message_id=''`, currentUser(r).ID, idempotencyKey)
+		}
+		respondSendError(w, err)
+		return
+	}
+	status := openAPISendStatusFromMessage(msg, mb.Address)
+	if msg.SendQueueID != "" {
+		if item, err := a.loadSendQueueEntryForUser(r.Context(), msg.SendQueueID, mb.UserID); err == nil {
+			status = openAPISendStatusFromQueue(item, mb.Address)
+		}
+	} else {
+		item, err := a.loadLatestSendQueueForMailboxMessage(r.Context(), msg.ID, mb.ID)
+		if err == nil {
+			status = openAPISendStatusFromQueue(item, mb.Address)
+		}
+	}
+	a.applyDeliveryStatus(r.Context(), &status)
+	if idempotencyKey != "" {
+		_, _ = a.db.ExecContext(r.Context(), `UPDATE send_idempotency_keys SET sent_message_id=?,queue_id=? WHERE user_id=? AND idempotency_key=?`, status.MessageID, status.QueueID, currentUser(r).ID, idempotencyKey)
+	}
+	respondJSON(w, http.StatusCreated, status)
+}
+
+func (a *App) handleOpenAPISendStatus(w http.ResponseWriter, r *http.Request) {
+	user := currentUser(r)
+	id := strings.TrimSpace(chi.URLParam(r, "id"))
+	item, err := a.loadSendQueueEntryForUser(r.Context(), id, user.ID)
+	if err != nil {
+		item, err = a.loadSendQueueEntryForSentMessage(r.Context(), id, user.ID)
+	}
+	if err == nil {
+		mailboxAddress := ""
+		if mb, mbErr := a.mailboxByID(r.Context(), item.MailboxID); mbErr == nil {
+			mailboxAddress = mb.Address
+		}
+		status := openAPISendStatusFromQueue(item, mailboxAddress)
+		a.applyDeliveryStatus(r.Context(), &status)
+		respondJSON(w, http.StatusOK, status)
+		return
+	}
+	msg, err := a.loadOpenAPISentMessageForUser(r.Context(), id, user.ID)
+	if err != nil {
+		respondError(w, http.StatusNotFound, "send item not found")
+		return
+	}
+	mailboxAddress := ""
+	if mb, mbErr := a.mailboxByID(r.Context(), msg.MailboxID); mbErr == nil {
+		mailboxAddress = mb.Address
+	}
+	respondJSON(w, http.StatusOK, openAPISendStatusFromMessage(msg, mailboxAddress))
+}
+
+func (a *App) handleOpenAPIMailboxMessages(w http.ResponseWriter, r *http.Request) {
+	user := currentUser(r)
+	mailboxID := strings.TrimSpace(chi.URLParam(r, "id"))
+	if _, err := a.mailboxForUserByID(r.Context(), user.ID, mailboxID); err != nil {
+		respondError(w, http.StatusNotFound, "mailbox not found")
+		return
+	}
+	limit := parseOpenAPILimit(r, 30, 100)
+	cursorReceivedAt, cursorID, offset, err := parseOpenAPIMessageCursor(r.URL.Query().Get("cursor"))
+	if err != nil {
+		badRequest(w, err)
+		return
+	}
+	folder := strings.TrimSpace(r.URL.Query().Get("folder"))
+	if folder == "" {
+		folder = "Inbox"
+	}
+	where := "m.mailbox_id=?"
+	args := []any{mailboxID}
+	if folder != "" && !strings.EqualFold(folder, "all") {
+		where += " AND lower(f.name)=lower(?)"
+		args = append(args, folder)
+	}
+	if q := strings.TrimSpace(r.URL.Query().Get("q")); q != "" {
+		where += " AND (m.subject LIKE ? OR m.from_addr LIKE ? OR m.from_name LIKE ? OR m.to_addrs LIKE ? OR m.snippet LIKE ? OR m.body_text LIKE ?)"
+		like := "%" + q + "%"
+		args = append(args, like, like, like, like, like, like)
+	}
+	if cursorReceivedAt != "" {
+		where += " AND (m.received_at<? OR (m.received_at=? AND m.id<?))"
+		args = append(args, cursorReceivedAt, cursorReceivedAt, cursorID)
+	}
+	args = append(args, limit+1)
+	query := `SELECT m.id,m.mailbox_id,m.folder_id,f.name,m.message_uid,m.imap_uid,m.imap_modseq,m.message_id,m.subject,m.from_addr,COALESCE(m.from_name,''),m.to_addrs,m.cc_addrs,m.bcc_addrs,m.sent_at,m.received_at,m.snippet,m.is_read,m.is_starred,m.has_attachments,m.size_bytes
+		FROM messages m JOIN folders f ON f.id=m.folder_id
+		WHERE ` + where + `
+		ORDER BY m.received_at DESC,m.id DESC LIMIT ?`
+	if offset > 0 {
+		query += " OFFSET ?"
+		args = append(args, offset)
+	}
+	rows, err := a.db.QueryContext(r.Context(), query, args...)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load messages")
+		return
+	}
+	defer rows.Close()
+	items := []MailMessage{}
+	for rows.Next() {
+		item, err := scanMessageSummary(rows)
+		if err != nil {
+			respondError(w, http.StatusInternalServerError, "failed to scan messages")
+			return
+		}
+		items = append(items, item)
+	}
+	if err := rows.Err(); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load messages")
+		return
+	}
+	nextCursor := ""
+	if len(items) > limit {
+		items = items[:limit]
+		last := items[len(items)-1]
+		nextCursor = encodeOpenAPIMessageCursor(last.ReceivedAt, last.ID)
+	}
+	respondJSON(w, http.StatusOK, map[string]any{"items": items, "nextCursor": nextCursor})
+}
+
+type domainScanner interface{ Scan(dest ...any) error }
+
+func scanDomain(row domainScanner) (Domain, error) {
+	var item Domain
+	var checked sql.NullString
+	var created string
+	err := row.Scan(&item.ID, &item.Name, &item.Status, &item.DKIMSelector, &item.DKIMPublicKey, &item.DNSStatus, &checked, &created)
+	if err != nil {
+		return item, err
+	}
+	item.DNSCheckedAt = nullableTime(checked)
+	item.CreatedAt = parseTime(created)
+	return item, nil
+}
+
+type mailboxScanner interface{ Scan(dest ...any) error }
+
+func scanMailbox(row mailboxScanner) (Mailbox, error) {
+	var item Mailbox
+	var created string
+	err := row.Scan(&item.ID, &item.UserID, &item.UserEmail, &item.DomainID, &item.LocalPart, &item.Address, &item.DisplayName, &item.QuotaMB, &item.Status, &created)
+	if err != nil {
+		return item, err
+	}
+	item.CreatedAt = parseTime(created)
+	return item, nil
+}
+
+type openAPISendStatus struct {
+	ID                string                   `json:"id"`
+	QueueID           string                   `json:"queueId,omitempty"`
+	Status            string                   `json:"status"`
+	QueueStatus       string                   `json:"queueStatus,omitempty"`
+	MessageID         string                   `json:"messageId"`
+	RFCMessageID      string                   `json:"rfcMessageId"`
+	MailboxID         string                   `json:"mailboxId"`
+	MailboxAddress    string                   `json:"mailboxAddress,omitempty"`
+	Subject           string                   `json:"subject,omitempty"`
+	Recipients        []string                 `json:"recipients,omitempty"`
+	AttemptCount      int                      `json:"attemptCount,omitempty"`
+	MaxAttempts       int                      `json:"maxAttempts,omitempty"`
+	NextAttemptAt     *time.Time               `json:"nextAttemptAt,omitempty"`
+	LastError         string                   `json:"lastError,omitempty"`
+	CreatedAt         time.Time                `json:"createdAt"`
+	UpdatedAt         *time.Time               `json:"updatedAt,omitempty"`
+	DeliveredAt       *time.Time               `json:"deliveredAt,omitempty"`
+	RecipientStatuses []openAPIRecipientStatus `json:"recipientStatuses,omitempty"`
+}
+
+type openAPIRecipientStatus struct {
+	Recipient  string    `json:"recipient"`
+	Status     string    `json:"status"`
+	Reason     string    `json:"reason,omitempty"`
+	Provider   string    `json:"provider,omitempty"`
+	OccurredAt time.Time `json:"occurredAt"`
+}
+
+func openAPISendStatusFromQueue(item SendQueueEntry, mailboxAddress string) openAPISendStatus {
+	status := item.Status
+	if status == sendQueueStatusDelivered {
+		status = "relayed"
+	}
+	return openAPISendStatus{
+		ID:             firstNonEmpty(item.SentMessageID, item.ID),
+		QueueID:        item.ID,
+		Status:         status,
+		QueueStatus:    item.Status,
+		MessageID:      item.SentMessageID,
+		RFCMessageID:   item.MessageID,
+		MailboxID:      item.MailboxID,
+		MailboxAddress: mailboxAddress,
+		Subject:        item.Subject,
+		Recipients:     item.Recipients,
+		AttemptCount:   item.AttemptCount,
+		MaxAttempts:    item.MaxAttempts,
+		NextAttemptAt:  timePtr(item.NextAttemptAt),
+		LastError:      item.LastError,
+		CreatedAt:      item.CreatedAt,
+		UpdatedAt:      timePtr(item.UpdatedAt),
+		DeliveredAt:    item.DeliveredAt,
+	}
+}
+
+func (a *App) reserveOpenAPISendIdempotency(ctx context.Context, userID, key, requestHash string) (openAPISendStatus, bool, error) {
+	_, _ = a.db.ExecContext(ctx, `DELETE FROM send_idempotency_keys WHERE created_at<?`, a.now().UTC().Add(-24*time.Hour).Format(time.RFC3339Nano))
+	res, err := a.db.ExecContext(ctx, `INSERT OR IGNORE INTO send_idempotency_keys(user_id,idempotency_key,request_hash,created_at) VALUES(?,?,?,?)`, userID, key, requestHash, a.now().UTC().Format(time.RFC3339Nano))
+	if err != nil {
+		return openAPISendStatus{}, false, err
+	}
+	if n, _ := res.RowsAffected(); n > 0 {
+		return openAPISendStatus{}, false, nil
+	}
+	var storedHash, sentMessageID, queueID string
+	if err := a.db.QueryRowContext(ctx, `SELECT request_hash,sent_message_id,queue_id FROM send_idempotency_keys WHERE user_id=? AND idempotency_key=?`, userID, key).Scan(&storedHash, &sentMessageID, &queueID); err != nil {
+		return openAPISendStatus{}, false, err
+	}
+	if storedHash != requestHash {
+		return openAPISendStatus{}, false, errors.New("Idempotency-Key was already used with a different request")
+	}
+	if sentMessageID == "" {
+		return openAPISendStatus{}, false, errors.New("a request with this Idempotency-Key is still processing")
+	}
+	item, err := a.loadSendQueueEntryForUser(ctx, queueID, userID)
+	if err != nil {
+		return openAPISendStatus{}, false, err
+	}
+	status := openAPISendStatusFromQueue(item, item.MailFrom)
+	a.applyDeliveryStatus(ctx, &status)
+	return status, true, nil
+}
+
+func (a *App) applyDeliveryStatus(ctx context.Context, status *openAPISendStatus) {
+	rows, err := a.db.QueryContext(ctx, `SELECT recipient,status,reason,provider,occurred_at FROM delivery_events
+		WHERE sent_message_id=? ORDER BY occurred_at DESC,id DESC`, status.MessageID)
+	if err != nil {
+		return
+	}
+	defer rows.Close()
+	seen := map[string]bool{}
+	counts := map[string]int{}
+	for rows.Next() {
+		var item openAPIRecipientStatus
+		var occurredAt string
+		if rows.Scan(&item.Recipient, &item.Status, &item.Reason, &item.Provider, &occurredAt) != nil || seen[item.Recipient] {
+			continue
+		}
+		seen[item.Recipient] = true
+		item.OccurredAt = parseTime(occurredAt)
+		status.RecipientStatuses = append(status.RecipientStatuses, item)
+		counts[item.Status]++
+	}
+	if len(status.RecipientStatuses) == 0 {
+		return
+	}
+	if len(status.RecipientStatuses) < len(status.Recipients) || len(counts) > 1 {
+		status.Status = "partial"
+		return
+	}
+	for _, value := range []string{"complained", "bounced", "rejected", "deferred", "delivered"} {
+		if counts[value] > 0 {
+			status.Status = value
+			return
+		}
+	}
+}
+
+func firstNonEmpty(values ...string) string {
+	for _, value := range values {
+		if strings.TrimSpace(value) != "" {
+			return value
+		}
+	}
+	return ""
+}
+
+type openAPIMessageCursor struct {
+	ReceivedAt string `json:"receivedAt"`
+	ID         string `json:"id"`
+}
+
+type openAPIListCursor struct {
+	Sort string `json:"sort"`
+	ID   string `json:"id"`
+}
+
+func encodeOpenAPIMessageCursor(receivedAt time.Time, id string) string {
+	payload, _ := json.Marshal(openAPIMessageCursor{ReceivedAt: receivedAt.UTC().Format(time.RFC3339Nano), ID: id})
+	return base64.RawURLEncoding.EncodeToString(payload)
+}
+
+func parseOpenAPIMessageCursor(raw string) (receivedAt, id string, offset int, err error) {
+	raw = strings.TrimSpace(raw)
+	if raw == "" {
+		return "", "", 0, nil
+	}
+	if n, convErr := strconv.Atoi(raw); convErr == nil {
+		if n < 0 {
+			return "", "", 0, errors.New("invalid cursor")
+		}
+		return "", "", n, nil
+	}
+	data, err := base64.RawURLEncoding.DecodeString(raw)
+	if err != nil {
+		return "", "", 0, errors.New("invalid cursor")
+	}
+	var cursor openAPIMessageCursor
+	if err := json.Unmarshal(data, &cursor); err != nil || cursor.ReceivedAt == "" || cursor.ID == "" {
+		return "", "", 0, errors.New("invalid cursor")
+	}
+	if _, err := time.Parse(time.RFC3339Nano, cursor.ReceivedAt); err != nil {
+		return "", "", 0, errors.New("invalid cursor")
+	}
+	return cursor.ReceivedAt, cursor.ID, 0, nil
+}
+
+func encodeOpenAPIListCursor(sortValue, id string) string {
+	payload, _ := json.Marshal(openAPIListCursor{Sort: sortValue, ID: id})
+	return base64.RawURLEncoding.EncodeToString(payload)
+}
+
+func parseOpenAPIListCursor(raw string) (sortValue, id string, err error) {
+	raw = strings.TrimSpace(raw)
+	if raw == "" {
+		return "", "", nil
+	}
+	data, err := base64.RawURLEncoding.DecodeString(raw)
+	if err != nil {
+		return "", "", errors.New("invalid cursor")
+	}
+	var cursor openAPIListCursor
+	if err := json.Unmarshal(data, &cursor); err != nil || cursor.Sort == "" || cursor.ID == "" {
+		return "", "", errors.New("invalid cursor")
+	}
+	return cursor.Sort, cursor.ID, nil
+}
+
+func openAPISendStatusFromMessage(msg *MailMessage, mailboxAddress string) openAPISendStatus {
+	recipients := append(append([]string{}, msg.To...), msg.CC...)
+	recipients = append(recipients, msg.BCC...)
+	return openAPISendStatus{
+		ID:             msg.ID,
+		Status:         sendAuditAccepted,
+		MessageID:      msg.ID,
+		RFCMessageID:   msg.MessageID,
+		MailboxID:      msg.MailboxID,
+		MailboxAddress: mailboxAddress,
+		Subject:        msg.Subject,
+		Recipients:     dedupeEmails(recipients),
+		CreatedAt:      msg.ReceivedAt,
+	}
+}
+
+func timePtr(t time.Time) *time.Time {
+	if t.IsZero() {
+		return nil
+	}
+	return &t
+}
+
+func (a *App) resolveMailboxOwnerTx(ctx context.Context, tx *sql.Tx, userID, ownerEmail, address, displayName, passwordHash string) (string, error) {
+	userID = strings.TrimSpace(userID)
+	if userID != "" {
+		var disabled int
+		if err := tx.QueryRowContext(ctx, `SELECT disabled FROM users WHERE id=?`, userID).Scan(&disabled); err != nil {
+			if errors.Is(err, sql.ErrNoRows) {
+				return "", errNotFound
+			}
+			return "", err
+		}
+		if intBool(disabled) {
+			return "", errors.New("owner user is disabled")
+		}
+		return userID, nil
+	}
+	email := normalizeEmail(ownerEmail)
+	if email == "" {
+		email = address
+	}
+	if !strings.Contains(email, "@") {
+		return "", errors.New("invalid owner email")
+	}
+	var existing string
+	err := tx.QueryRowContext(ctx, `SELECT id FROM users WHERE (login_name=? OR email=?) AND disabled=0`, email, email).Scan(&existing)
+	if err == nil {
+		return existing, nil
+	}
+	if !errors.Is(err, sql.ErrNoRows) {
+		return "", err
+	}
+	userID = newID("usr")
+	now := a.now().UTC().Format(time.RFC3339Nano)
+	if displayName == "" {
+		displayName = email
+	}
+	_, err = tx.ExecContext(ctx, `INSERT INTO users(id,login_name,email,display_name,role,password_hash,disabled,created_at,updated_at)
+		VALUES(?,?,?,?,?,?,?,?,?)`, userID, email, email, displayName, "user", passwordHash, 0, now, now)
+	return userID, err
+}
+
+func (a *App) ensureActiveUserExists(ctx context.Context, userID string) error {
+	var disabled int
+	if err := a.db.QueryRowContext(ctx, `SELECT disabled FROM users WHERE id=?`, userID).Scan(&disabled); err != nil {
+		if errors.Is(err, sql.ErrNoRows) {
+			return errNotFound
+		}
+		return err
+	}
+	if intBool(disabled) {
+		return errors.New("owner user is disabled")
+	}
+	return nil
+}
+
+func respondMailboxOwnerError(w http.ResponseWriter, err error) {
+	if errors.Is(err, errNotFound) {
+		respondError(w, http.StatusNotFound, "owner user not found")
+		return
+	}
+	if err != nil {
+		badRequest(w, err)
+		return
+	}
+}
+
+func respondSendError(w http.ResponseWriter, err error) {
+	switch {
+	case errors.Is(err, errNoRecipients), errors.Is(err, errInvalidMIME), errors.Is(err, errAttachmentTooLarge):
+		badRequest(w, err)
+	case errors.Is(err, errSMTPRateLimited):
+		respondError(w, http.StatusTooManyRequests, err.Error())
+	case errors.Is(err, errSenderNotAuthorized):
+		respondError(w, http.StatusForbidden, err.Error())
+	case errors.Is(err, errMailboxQuotaExceeded):
+		respondError(w, http.StatusInsufficientStorage, err.Error())
+	default:
+		respondError(w, http.StatusInternalServerError, err.Error())
+	}
+}
+
+func (a *App) loadLatestSendQueueForMessage(ctx context.Context, sentMessageID, userID string) (SendQueueEntry, error) {
+	row := a.db.QueryRowContext(ctx, `SELECT sq.id,sq.mailbox_id,sq.sent_message_id,sq.message_id,COALESCE(m.subject,''),sq.source,sq.mail_from,sq.header_from,sq.recipients_json,sq.status,sq.attempt_count,sq.max_attempts,sq.next_attempt_at,sq.last_error,sq.created_at,sq.updated_at,sq.delivered_at
+		FROM send_queue sq JOIN mailboxes mb ON mb.id=sq.mailbox_id LEFT JOIN messages m ON m.id=sq.sent_message_id
+		WHERE sq.sent_message_id=? AND mb.user_id=? ORDER BY sq.created_at DESC, sq.id DESC LIMIT 1`, sentMessageID, userID)
+	return scanSendQueueEntry(row)
+}
+
+func (a *App) loadLatestSendQueueForMailboxMessage(ctx context.Context, sentMessageID, mailboxID string) (SendQueueEntry, error) {
+	row := a.db.QueryRowContext(ctx, `SELECT sq.id,sq.mailbox_id,sq.sent_message_id,sq.message_id,COALESCE(m.subject,''),sq.source,sq.mail_from,sq.header_from,sq.recipients_json,sq.status,sq.attempt_count,sq.max_attempts,sq.next_attempt_at,sq.last_error,sq.created_at,sq.updated_at,sq.delivered_at
+		FROM send_queue sq LEFT JOIN messages m ON m.id=sq.sent_message_id
+		WHERE sq.sent_message_id=? AND sq.mailbox_id=? ORDER BY sq.created_at DESC, sq.id DESC LIMIT 1`, sentMessageID, mailboxID)
+	return scanSendQueueEntry(row)
+}
+
+func (a *App) loadSendQueueEntryForSentMessage(ctx context.Context, sentMessageID, userID string) (SendQueueEntry, error) {
+	return a.loadLatestSendQueueForMessage(ctx, sentMessageID, userID)
+}
+
+func (a *App) loadOpenAPISentMessageForUser(ctx context.Context, id, userID string) (*MailMessage, error) {
+	var messageID string
+	err := a.db.QueryRowContext(ctx, `SELECT m.id
+		FROM messages m JOIN mailboxes mb ON mb.id=m.mailbox_id JOIN folders f ON f.id=m.folder_id
+		WHERE (m.id=? OR m.message_id=?) AND mb.user_id=? AND lower(f.name)='sent'
+		ORDER BY m.received_at DESC LIMIT 1`, id, id, userID).Scan(&messageID)
+	if err != nil {
+		return nil, err
+	}
+	return a.messageByID(ctx, messageID, false)
+}
+
+func parseOpenAPILimit(r *http.Request, defaultLimit, maxLimit int) int {
+	limit, err := strconv.Atoi(r.URL.Query().Get("limit"))
+	if err != nil || limit <= 0 {
+		return defaultLimit
+	}
+	if limit > maxLimit {
+		return maxLimit
+	}
+	return limit
+}
+
+func parseOpenAPIOffset(r *http.Request) int {
+	cursor := strings.TrimSpace(r.URL.Query().Get("cursor"))
+	if cursor == "" {
+		return 0
+	}
+	offset, err := strconv.Atoi(cursor)
+	if err != nil || offset < 0 {
+		return 0
+	}
+	return offset
+}

apps/api/internal/app/permissions.go

@@ -137,16 +137,18 @@ type PermissionGroup struct {
 }
 
 type PermissionLimits struct {
-	MaxAttachmentMB  int `json:"maxAttachmentMb"`
-	SMTPDailyLimit   int `json:"smtpDailyLimit"`
-	SMTPMinuteLimit  int `json:"smtpMinuteLimit"`
-	IMAPMinuteLimit  int `json:"imapMinuteLimit"`
-	POP3MinuteLimit  int `json:"pop3MinuteLimit"`
+	MaxAttachmentMB int `json:"maxAttachmentMb"`
+	MaxMailboxCount int `json:"maxMailboxCount"`
+	SMTPDailyLimit  int `json:"smtpDailyLimit"`
+	SMTPMinuteLimit int `json:"smtpMinuteLimit"`
+	IMAPMinuteLimit int `json:"imapMinuteLimit"`
+	POP3MinuteLimit int `json:"pop3MinuteLimit"`
 }
 
 func defaultPermissionLimits() PermissionLimits {
 	return PermissionLimits{
 		MaxAttachmentMB: 25,
+		MaxMailboxCount: 9,
 		SMTPDailyLimit:  200,
 		SMTPMinuteLimit: 20,
 		IMAPMinuteLimit: 200,
@@ -158,6 +160,9 @@ func normalizePermissionLimits(limits PermissionLimits) (PermissionLimits, error
 	if limits.MaxAttachmentMB < 0 {
 		return PermissionLimits{}, errors.New("maxAttachmentMb cannot be negative")
 	}
+	if limits.MaxMailboxCount < 0 {
+		return PermissionLimits{}, errors.New("maxMailboxCount cannot be negative")
+	}
 	if limits.SMTPDailyLimit < 0 {
 		return PermissionLimits{}, errors.New("smtpDailyLimit cannot be negative")
 	}
@@ -173,6 +178,17 @@ func normalizePermissionLimits(limits PermissionLimits) (PermissionLimits, error
 	return limits, nil
 }
 
+func normalizeMailboxLimitOverride(value *int) (*int, error) {
+	if value == nil {
+		return nil, nil
+	}
+	if *value < 0 {
+		return nil, errors.New("mailboxLimitOverride cannot be negative")
+	}
+	normalized := *value
+	return &normalized, nil
+}
+
 func decodeStoredLimits(value string) PermissionLimits {
 	limits := defaultPermissionLimits()
 	if strings.TrimSpace(value) == "" {
@@ -197,11 +213,12 @@ func encodePermissionLimits(limits PermissionLimits) string {
 
 func mergePermissionLimits(left, right PermissionLimits) PermissionLimits {
 	return PermissionLimits{
-		MaxAttachmentMB:  mergeLimitValue(left.MaxAttachmentMB, right.MaxAttachmentMB),
-		SMTPDailyLimit:   mergeLimitValue(left.SMTPDailyLimit, right.SMTPDailyLimit),
-		SMTPMinuteLimit:  mergeLimitValue(left.SMTPMinuteLimit, right.SMTPMinuteLimit),
-		IMAPMinuteLimit:  mergeLimitValue(left.IMAPMinuteLimit, right.IMAPMinuteLimit),
-		POP3MinuteLimit:  mergeLimitValue(left.POP3MinuteLimit, right.POP3MinuteLimit),
+		MaxAttachmentMB: mergeLimitValue(left.MaxAttachmentMB, right.MaxAttachmentMB),
+		MaxMailboxCount: mergeLimitValue(left.MaxMailboxCount, right.MaxMailboxCount),
+		SMTPDailyLimit:  mergeLimitValue(left.SMTPDailyLimit, right.SMTPDailyLimit),
+		SMTPMinuteLimit: mergeLimitValue(left.SMTPMinuteLimit, right.SMTPMinuteLimit),
+		IMAPMinuteLimit: mergeLimitValue(left.IMAPMinuteLimit, right.IMAPMinuteLimit),
+		POP3MinuteLimit: mergeLimitValue(left.POP3MinuteLimit, right.POP3MinuteLimit),
 	}
 }
 
@@ -216,11 +233,12 @@ func mergeLimitValue(left, right int) int {
 }
 
 func minimalLimits() PermissionLimits {
-	// minimalLimits sets every field to 1 so that mergePermissionLimits 
-	// (which takes the max of each field) produces correct aggregation 
+	// minimalLimits sets every field to 1 so that mergePermissionLimits
+	// (which takes the max of each field) produces correct aggregation
 	// when no group has a limit set for a given field.
 	return PermissionLimits{
 		MaxAttachmentMB: 1,
+		MaxMailboxCount: 1,
 		SMTPDailyLimit:  1,
 		SMTPMinuteLimit: 1,
 		IMAPMinuteLimit: 1,
@@ -236,6 +254,7 @@ func actorCanGrantLimits(actor *User, limits PermissionLimits) bool {
 		return true
 	}
 	return canGrantLimitValue(actor.Limits.MaxAttachmentMB, limits.MaxAttachmentMB) &&
+		canGrantLimitValue(actor.Limits.MaxMailboxCount, limits.MaxMailboxCount) &&
 		canGrantLimitValue(actor.Limits.SMTPDailyLimit, limits.SMTPDailyLimit) &&
 		canGrantLimitValue(actor.Limits.SMTPMinuteLimit, limits.SMTPMinuteLimit) &&
 		canGrantLimitValue(actor.Limits.IMAPMinuteLimit, limits.IMAPMinuteLimit) &&
@@ -292,20 +311,20 @@ var permissionCatalogItems = []PermissionInfo{
 	{Key: PermissionMailRules, Label: "管理收件规则", Description: "查看、新增和删除本人的收件规则。", Category: "个人中心"},
 	{Key: PermissionMailBlocked, Label: "管理拦截名单", Description: "查看、新增和删除本人的发件人拦截规则。", Category: "个人中心"},
 	{Key: PermissionMailStats, Label: "查看邮箱统计", Description: "查看本人邮箱统计和清理概览。", Category: "个人中心"},
-	{Key: PermissionMailboxApply, Label: "自助申请邮箱", Description: "在开放申请时为本人申请邮箱账号。", Category: "个人中心"},
+	{Key: PermissionMailboxApply, Label: "自助申请邮箱", Description: "在开放申请时为本人申请邮箱。", Category: "个人中心"},
 
 	{Key: PermissionAdminOverview, Label: "查看概览", Description: "查看后台统计和首次配置检查。", Category: "概览"},
 
-	{Key: PermissionUsersView, Label: "查看用户", Description: "查看用户列表、状态和绑定邮箱。", Category: "用户"},
-	{Key: PermissionUsersCreate, Label: "创建用户", Description: "创建普通用户并分配权限组。", Category: "用户"},
-	{Key: PermissionUsersUpdate, Label: "编辑用户", Description: "修改用户显示名称、状态和权限组。", Category: "用户"},
-	{Key: PermissionUsersDelete, Label: "删除用户", Description: "删除非受保护用户。", Category: "用户"},
-	{Key: PermissionUsersResetPassword, Label: "重置用户密码", Description: "为用户重置登录密码。", Category: "用户"},
+	{Key: PermissionUsersView, Label: "查看账号", Description: "查看账号列表、状态、邮箱数量上限和绑定邮箱。", Category: "账号管理"},
+	{Key: PermissionUsersCreate, Label: "创建账号", Description: "创建普通账号并分配权限配额。", Category: "账号管理"},
+	{Key: PermissionUsersUpdate, Label: "编辑账号", Description: "修改账号显示名称、状态、邮箱数量上限和权限配额。", Category: "账号管理"},
+	{Key: PermissionUsersDelete, Label: "删除账号", Description: "删除非受保护账号。", Category: "账号管理"},
+	{Key: PermissionUsersResetPassword, Label: "重置账号密码", Description: "为账号重置登录密码。", Category: "账号管理"},
 
-	{Key: PermissionGroupsView, Label: "查看权限组", Description: "查看权限组、权限目录和使用人数。", Category: "权限组"},
-	{Key: PermissionGroupsCreate, Label: "创建权限组", Description: "创建自定义权限组。", Category: "权限组"},
-	{Key: PermissionGroupsUpdate, Label: "编辑权限组", Description: "修改自定义权限组名称、说明和权限。", Category: "权限组"},
-	{Key: PermissionGroupsDelete, Label: "删除权限组", Description: "删除未被用户使用的自定义权限组。", Category: "权限组"},
+	{Key: PermissionGroupsView, Label: "查看权限配额", Description: "查看权限配额、权限目录和使用人数。", Category: "权限配额"},
+	{Key: PermissionGroupsCreate, Label: "创建权限配额", Description: "创建自定义权限配额。", Category: "权限配额"},
+	{Key: PermissionGroupsUpdate, Label: "编辑权限配额", Description: "修改自定义权限配额名称、说明、功能权限和额度。", Category: "权限配额"},
+	{Key: PermissionGroupsDelete, Label: "删除权限配额", Description: "删除未被账号使用的自定义权限配额。", Category: "权限配额"},
 
 	{Key: PermissionDomainsView, Label: "查看域名", Description: "查看邮件域名和 DKIM 配置。", Category: "域名"},
 	{Key: PermissionDomainsCreate, Label: "添加域名", Description: "添加新的邮件域名。", Category: "域名"},
@@ -315,15 +334,15 @@ var permissionCatalogItems = []PermissionInfo{
 	{Key: PermissionDNSView, Label: "查看 DNS", Description: "查看域名需要配置的 DNS 记录。", Category: "DNS"},
 	{Key: PermissionDNSCheck, Label: "执行 DNS 检测", Description: "触发 MX、SPF、DKIM、DMARC 检测。", Category: "DNS"},
 
-	{Key: PermissionMailboxesView, Label: "查看邮箱账号", Description: "查看邮箱账号列表和归属用户。", Category: "邮箱账号"},
-	{Key: PermissionMailboxesCreate, Label: "创建邮箱账号", Description: "创建邮箱账号并准备归属用户。", Category: "邮箱账号"},
-	{Key: PermissionMailboxesUpdate, Label: "编辑邮箱账号", Description: "修改邮箱归属、显示名、配额和状态。", Category: "邮箱账号"},
-	{Key: PermissionMailboxesDelete, Label: "删除邮箱账号", Description: "删除邮箱账号及关联邮件文件。", Category: "邮箱账号"},
+	{Key: PermissionMailboxesView, Label: "查看邮箱", Description: "查看邮箱列表和归属账号。", Category: "邮箱管理"},
+	{Key: PermissionMailboxesCreate, Label: "创建邮箱", Description: "创建邮箱并准备归属账号。", Category: "邮箱管理"},
+	{Key: PermissionMailboxesUpdate, Label: "编辑邮箱", Description: "修改邮箱归属、显示名、配额和状态。", Category: "邮箱管理"},
+	{Key: PermissionMailboxesDelete, Label: "删除邮箱", Description: "删除邮箱及关联邮件文件。", Category: "邮箱管理"},
 
-	{Key: PermissionAliasesView, Label: "查看别名转发", Description: "查看别名转发规则。", Category: "别名转发"},
-	{Key: PermissionAliasesCreate, Label: "创建别名转发", Description: "创建新的别名转发。", Category: "别名转发"},
-	{Key: PermissionAliasesUpdate, Label: "编辑别名转发", Description: "修改别名转发来源、目标和启用状态。", Category: "别名转发"},
-	{Key: PermissionAliasesDelete, Label: "删除别名转发", Description: "删除别名转发规则。", Category: "别名转发"},
+	{Key: PermissionAliasesView, Label: "查看邮件转发", Description: "查看邮件转发规则。", Category: "邮件转发"},
+	{Key: PermissionAliasesCreate, Label: "创建邮件转发", Description: "创建新的邮件转发规则。", Category: "邮件转发"},
+	{Key: PermissionAliasesUpdate, Label: "编辑邮件转发", Description: "修改邮件转发来源、目标和启用状态。", Category: "邮件转发"},
+	{Key: PermissionAliasesDelete, Label: "删除邮件转发", Description: "删除邮件转发规则。", Category: "邮件转发"},
 
 	{Key: PermissionMessagesView, Label: "查看邮件列表", Description: "查看全局邮件列表和搜索结果。", Category: "邮件审计"},
 	{Key: PermissionMessagesRead, Label: "查看邮件正文", Description: "查看任意邮箱及未注册收件人的邮件正文。", Category: "邮件审计"},
@@ -435,8 +454,8 @@ func defaultPermissionGroups() []PermissionGroup {
 	return []PermissionGroup{
 		{
 			ID:          PermissionGroupSuperAdmin,
-			Name:        "超级管理员",
-			Description: "拥有全部后台权限，由用户身份决定，不通过权限组分配。",
+			Name:        "管理员",
+			Description: "拥有全部后台权限，由账号身份决定，不通过权限配额分配。",
 			Permissions: allPermissionKeys(),
 			Limits:      PermissionLimits{},
 			System:      true,
@@ -597,6 +616,9 @@ func (a *App) attachUserAuthorization(ctx context.Context, u *User) error {
 	if u == nil {
 		return nil
 	}
+	if u.LoginName == "" {
+		u.LoginName = u.Email
+	}
 	permissions, err := a.permissionsForUser(ctx, u.ID, u.Role)
 	if err != nil {
 		return err
@@ -611,6 +633,9 @@ func (a *App) attachUserAuthorization(ctx context.Context, u *User) error {
 	}
 	u.Permissions = permissions
 	u.Limits = limits
+	if u.Role != "admin" && u.MailboxLimitOverride != nil {
+		u.Limits.MaxMailboxCount = *u.MailboxLimitOverride
+	}
 	u.PermissionGroupIDs = groupIDs
 	u.PermissionGroups = groups
 	u.Protected = a.isDefaultAdminUser(u)
@@ -769,7 +794,7 @@ func (a *App) effectiveLimitsForUserGroups(ctx context.Context, tx *sql.Tx, grou
 
 func (a *App) permissionGroupsForUser(ctx context.Context, userID, role string) ([]string, []PermissionGroupSummary, error) {
 	if role == "admin" {
-		group := PermissionGroupSummary{ID: PermissionGroupSuperAdmin, Name: "超级管理员"}
+		group := PermissionGroupSummary{ID: PermissionGroupSuperAdmin, Name: "管理员"}
 		return []string{group.ID}, []PermissionGroupSummary{group}, nil
 	}
 	ids := []string{PermissionGroupRegular}
@@ -1032,6 +1057,9 @@ func (a *App) isDefaultAdminUser(u *User) bool {
 	if u == nil {
 		return false
 	}
+	if adminUsername := normalizeLoginName(a.cfg.AdminUsername); adminUsername != "" && !strings.Contains(adminUsername, "@") {
+		return strings.EqualFold(normalizeLoginName(u.LoginName), adminUsername)
+	}
 	adminEmail := normalizeEmail(a.cfg.AdminEmail)
 	return adminEmail != "" && strings.EqualFold(normalizeEmail(u.Email), adminEmail)
 }

apps/api/internal/app/router_auth.go

@@ -15,6 +15,7 @@ import (
 type contextKey string
 
 const userContextKey contextKey = "user"
+const apiTokenScopesContextKey contextKey = "api_token_scopes"
 
 func (a *App) Router() http.Handler {
 	r := chi.NewRouter()
@@ -31,14 +32,25 @@ func (a *App) Router() http.Handler {
 
 	r.Route("/api", func(r chi.Router) {
 		r.Get("/public/settings", a.handlePublicSettings)
+		r.Get("/verify-email", a.handleVerifyForwardingEmail)
 		r.Post("/auth/register", a.handleRegister)
 		r.Post("/auth/login", a.handleLogin)
 		r.Post("/auth/logout", a.handleLogout)
 		r.With(a.requireAuth).Get("/me", a.handleMe)
 		r.With(a.requireAuth).Post("/me/profile", a.handleUpdateProfile)
 		r.With(a.requireAuth).Post("/me/password", a.handleChangePassword)
+		r.With(a.requireAuth).Get("/me/api-tokens", a.handleListAPITokens)
+		r.With(a.requireAuth).Post("/me/api-tokens", a.handleCreateAPIToken)
+		r.With(a.requireAuth).Post("/me/api-tokens/{id}", a.handleUpdateAPIToken)
+		r.With(a.requireAuth).Delete("/me/api-tokens/{id}", a.handleDeleteAPIToken)
 		r.With(a.requireAuth, a.requirePermission(PermissionMailboxApply)).Get("/me/mailbox-apply-options", a.handleMailboxApplyOptions)
 		r.With(a.requireAuth, a.requirePermission(PermissionMailboxApply)).Post("/me/mailboxes/apply", a.handleApplyMailbox)
+		r.With(a.requireAuth, a.requirePermission(PermissionMailAccess)).Get("/me/forwarding", a.handleForwardingSettings)
+		r.With(a.requireAuth, a.requirePermission(PermissionMailAccess)).Post("/me/forwarding/verified-emails", a.handleAddForwardingVerifiedEmail)
+		r.With(a.requireAuth, a.requirePermission(PermissionMailAccess)).Post("/me/forwarding/verified-emails/{id}/resend", a.handleResendForwardingVerifiedEmail)
+		r.With(a.requireAuth, a.requirePermission(PermissionMailAccess)).Delete("/me/forwarding/verified-emails/{id}", a.handleDeleteForwardingVerifiedEmail)
+		r.With(a.requireAuth, a.requirePermission(PermissionMailAccess)).Post("/me/forwarding/account", a.handleUpdateAccountForwarding)
+		r.With(a.requireAuth, a.requirePermission(PermissionMailAccess)).Post("/me/mailboxes/{id}/forwarding", a.handleUpdateMailboxForwarding)
 		r.With(a.requireAuth).Post("/me/2fa/setup", a.handleTwoFactorSetup)
 		r.With(a.requireAuth).Post("/me/2fa/enable", a.handleTwoFactorEnable)
 		r.With(a.requireAuth).Post("/me/2fa/disable", a.handleTwoFactorDisable)
@@ -53,25 +65,59 @@ func (a *App) Router() http.Handler {
 		r.With(a.requireAuth, a.requirePermission(PermissionMailSignatures)).Get("/me/signatures/default", a.handleDefaultSignature)
 		r.With(a.requireAuth, a.requirePermission(PermissionMailRules)).Get("/me/rules", a.handleListRules)
 		r.With(a.requireAuth, a.requirePermission(PermissionMailRules)).Post("/me/rules", a.handleCreateRule)
+		r.With(a.requireAuth, a.requirePermission(PermissionMailRules)).Post("/me/rules/{id}", a.handleUpdateRule)
+		r.With(a.requireAuth, a.requirePermission(PermissionMailRules)).Post("/me/rules/{id}/move", a.handleMoveRule)
+		r.With(a.requireAuth, a.requirePermission(PermissionMailRules)).Post("/me/rules/{id}/apply", a.handleApplyRule)
 		r.With(a.requireAuth, a.requirePermission(PermissionMailRules)).Delete("/me/rules/{id}", a.handleDeleteRule)
 		r.With(a.requireAuth, a.requirePermission(PermissionMailBlocked)).Get("/me/blocked-senders", a.handleListBlockedSenders)
 		r.With(a.requireAuth, a.requirePermission(PermissionMailBlocked)).Post("/me/blocked-senders", a.handleCreateBlockedSender)
 		r.With(a.requireAuth, a.requirePermission(PermissionMailBlocked)).Delete("/me/blocked-senders/{id}", a.handleDeleteBlockedSender)
 		r.With(a.requireAuth, a.requirePermission(PermissionMailStats)).Get("/me/stats", a.handleMailStats)
 		r.With(a.requireAuth, a.requirePermission(PermissionMailOrganize)).Post("/me/cleanup", a.handleMailCleanup)
+		r.With(a.requireAuth, a.requirePermission(PermissionMailAccess), a.requireExternalIMAPEnabled).Get("/me/external-imap-accounts", a.handleListExternalIMAPAccounts)
+		r.With(a.requireAuth, a.requirePermission(PermissionMailAccess), a.requireExternalIMAPEnabled).Post("/me/external-imap-accounts", a.handleCreateExternalIMAPAccount)
+		r.With(a.requireAuth, a.requirePermission(PermissionMailAccess), a.requireExternalIMAPEnabled).Post("/me/external-imap-accounts/{id}", a.handleUpdateExternalIMAPAccount)
+		r.With(a.requireAuth, a.requirePermission(PermissionMailAccess), a.requireExternalIMAPEnabled).Delete("/me/external-imap-accounts/{id}", a.handleDeleteExternalIMAPAccount)
+		r.With(a.requireAuth, a.requirePermission(PermissionMailAccess), a.requireExternalIMAPEnabled).Post("/me/external-imap-accounts/{id}/test", a.handleTestExternalIMAPAccount)
+		r.With(a.requireAuth, a.requirePermission(PermissionMailAccess), a.requireExternalIMAPEnabled).Get("/me/external-imap-accounts/{id}/runs", a.handleExternalIMAPSyncRuns)
+		r.With(a.requireAuth, a.requirePermission(PermissionMailAccess), a.requireExternalIMAPEnabled).Post("/me/external-imap-accounts/{id}/sync", a.handleSyncExternalIMAPAccount)
+		r.With(a.requireAuth, a.requirePermission(PermissionMailAccess), a.requireExternalIMAPEnabled).Post("/me/external-imap-accounts/{id}/sync-folder", a.handleSyncExternalIMAPFolder)
+		r.With(a.requireAuth, a.requirePermission(PermissionMailAccess), a.requireExternalIMAPEnabled).Post("/me/external-imap-oauth/{provider}/start", a.handleStartExternalIMAPOAuth)
+		r.With(a.requireExternalIMAPEnabled).Get("/external-imap-oauth/{provider}/callback", a.handleExternalIMAPOAuthCallback)
 		r.With(a.requireAuth).Get("/events", a.handleEvents)
 
+		r.Post("/open/v1/delivery-events", a.handleOpenAPIDeliveryWebhook)
+		r.Route("/open", func(r chi.Router) { a.registerOpenAPIRoutes(r) })
+		r.Route("/open/v1", func(r chi.Router) { a.registerOpenAPIRoutes(r) })
+
 		r.Group(func(r chi.Router) {
 			r.Use(a.requireAuth)
 			r.With(a.requirePermission(PermissionMailAccess)).Get("/mail/mailboxes", a.handleMyMailboxes)
 			r.With(a.requirePermission(PermissionMailRead)).Get("/mail/folders", a.handleMailFolders)
+			r.With(a.requirePermission(PermissionMailOrganize)).Post("/mail/folders", a.handleCreateMailFolder)
+			r.With(a.requirePermission(PermissionMailOrganize)).Post("/mail/folders/reorder", a.handleReorderMailFolders)
+			r.With(a.requirePermission(PermissionMailOrganize)).Delete("/mail/folders/{id}", a.handleDeleteMailFolder)
 			r.With(a.requireAnyPermission(PermissionMailRead, PermissionMailLabels)).Get("/mail/labels", a.handleMailLabels)
 			r.With(a.requirePermission(PermissionMailLabels)).Post("/mail/labels", a.handleCreateMailLabel)
 			r.With(a.requirePermission(PermissionMailLabels)).Delete("/mail/labels/{id}", a.handleDeleteMailLabel)
 			r.With(a.requirePermission(PermissionMailRead)).Get("/mail/messages", a.handleMailMessages)
 			r.With(a.requirePermission(PermissionMailRead)).Get("/mail/starred", a.handleStarredMessages)
+			r.With(a.requirePermission(PermissionMailRead)).Get("/mail/export", a.handleExportMail)
+			r.With(a.requirePermission(PermissionMailOrganize)).Post("/mail/import", a.handleImportMail)
 			r.With(a.requirePermission(PermissionMailRead)).Get("/mail/messages/{id}", a.handleMailMessage)
+			r.With(a.requirePermission(PermissionMailRead)).Post("/mail/messages/{id}/translate", a.handleTranslateMailMessage)
+			r.With(a.requirePermission(PermissionMailRead), a.requireExternalIMAPEnabled).Get("/mail/external-accounts", a.handleMailExternalAccounts)
+			r.With(a.requirePermission(PermissionMailRead), a.requireExternalIMAPEnabled).Get("/mail/external-accounts/{id}/folders", a.handleExternalIMAPFolders)
+			r.With(a.requirePermission(PermissionMailRead), a.requireExternalIMAPEnabled).Get("/mail/external-accounts/{id}/messages", a.handleExternalIMAPMessages)
+			r.With(a.requirePermission(PermissionMailRead), a.requireExternalIMAPEnabled).Get("/mail/external-accounts/{id}/messages/{remoteId}", a.handleExternalIMAPMessage)
+			r.With(a.requirePermission(PermissionMailRead), a.requireExternalIMAPEnabled).Post("/mail/external-accounts/{id}/messages/{remoteId}/translate", a.handleTranslateExternalIMAPMessage)
+			r.With(a.requirePermission(PermissionMailAttachments), a.requireExternalIMAPEnabled).Get("/mail/external-accounts/{id}/attachments/{remoteId}/{partId}", a.handleExternalIMAPAttachment)
+			r.With(a.requirePermission(PermissionMailOrganize), a.requireExternalIMAPEnabled).Post("/mail/external-accounts/{id}/messages/{remoteId}/mark-read", a.handleExternalIMAPMarkRead)
 			r.With(a.requirePermission(PermissionMailSend)).Post("/mail/send", a.handleMailSend)
+			r.With(a.requirePermission(PermissionMailRead)).Get("/mail/send-queue", a.handleSendQueue)
+			r.With(a.requirePermission(PermissionMailRead)).Get("/mail/send-queue/{id}/audit", a.handleSendQueueAudit)
+			r.With(a.requirePermission(PermissionMailSend)).Post("/mail/send-queue/{id}/retry", a.handleRetrySendQueue)
+			r.With(a.requirePermission(PermissionMailSend)).Delete("/mail/send-queue/{id}", a.handleCancelSendQueue)
 			r.With(a.requirePermission(PermissionMailSchedule)).Get("/mail/scheduled-sends", a.handleScheduledSends)
 			r.With(a.requirePermission(PermissionMailSchedule), a.requirePermission(PermissionMailSend)).Post("/mail/schedule-send", a.handleScheduleSend)
 			r.With(a.requirePermission(PermissionMailSchedule)).Delete("/mail/schedule-send/{id}", a.handleCancelScheduledSend)
@@ -90,6 +136,8 @@ func (a *App) Router() http.Handler {
 		r.Group(func(r chi.Router) {
 			r.Use(a.requireAuth)
 			r.Use(a.requireAdminAccess)
+			r.Get("/admin/system/version", a.handleSystemVersion)
+			r.Post("/admin/system/update", a.handleSystemUpdate)
 			r.With(a.requirePermission(PermissionAdminOverview)).Get("/admin/overview", a.handleAdminOverview)
 			r.With(a.requireAnyPermission(PermissionUsersView, PermissionMailboxesView)).Get("/admin/users", a.handleListUsers)
 			r.With(a.requirePermission(PermissionUsersCreate)).Post("/admin/users", a.handleCreateUser)
@@ -115,9 +163,11 @@ func (a *App) Router() http.Handler {
 			r.With(a.requirePermission(PermissionAliasesUpdate)).Post("/admin/aliases/{id}", a.handleUpdateAlias)
 			r.With(a.requirePermission(PermissionAliasesDelete)).Delete("/admin/aliases/{id}", a.handleDeleteAlias)
 			r.With(a.requirePermission(PermissionMessagesView)).Get("/admin/messages", a.handleAdminMessages)
+			r.With(a.requirePermission(PermissionMessagesView)).Get("/admin/send-audit", a.handleAdminSendAudit)
 			r.With(a.requirePermission(PermissionMessagesRead)).Get("/admin/messages/{id}", a.handleAdminMessage)
 			r.With(a.requirePermission(PermissionMessagesAttachment)).Get("/admin/attachments/{id}", a.handleAdminAttachment)
 			r.With(a.requirePermission(PermissionSettingsView)).Get("/admin/settings", a.handleGetSystemSettings)
+			r.With(a.requirePermission(PermissionSettingsView)).Get("/admin/maildir-sync/health", a.handleMaildirSyncHealth)
 			r.With(a.requirePermission(PermissionSettingsUpdate)).Post("/admin/settings", a.handleUpdateSystemSettings)
 			r.With(a.requirePermission(PermissionSettingsTestSMTP)).Post("/admin/settings/test-smtp", a.handleTestSMTP)
 			r.With(a.requirePermission(PermissionTemplatesView)).Get("/admin/mail-templates", a.handleListMailTemplates)
@@ -131,6 +181,37 @@ func (a *App) Router() http.Handler {
 	return r
 }
 
+func (a *App) registerOpenAPIRoutes(r chi.Router) {
+	r.Use(a.requireAPIToken)
+	r.With(a.requireAPITokenScope("domains:read"), a.requireAdminAccess, a.requireAnyPermission(PermissionDomainsView, PermissionDNSView, PermissionMailboxesView, PermissionAliasesView, PermissionSettingsView, PermissionTemplatesView)).Get("/domains", a.handleOpenAPIListDomains)
+	r.With(a.requireAPITokenScope("domains:write"), a.requireAdminAccess, a.requirePermission(PermissionDomainsCreate)).Post("/domains", a.handleOpenAPICreateDomain)
+	r.With(a.requireAPITokenScope("domains:read"), a.requireAdminAccess, a.requireAnyPermission(PermissionDomainsView, PermissionDNSView, PermissionMailboxesView, PermissionAliasesView, PermissionSettingsView, PermissionTemplatesView)).Get("/domains/{id}", a.handleOpenAPIGetDomain)
+	r.With(a.requireAPITokenScope("domains:write"), a.requireAdminAccess, a.requirePermission(PermissionDomainsUpdate)).Post("/domains/{id}", a.handleOpenAPIUpdateDomain)
+	r.With(a.requireAPITokenScope("domains:write"), a.requireAdminAccess, a.requirePermission(PermissionDomainsDelete)).Delete("/domains/{id}", a.handleOpenAPIDeleteDomain)
+	r.With(a.requireAPITokenScope("dns:read"), a.requireAdminAccess, a.requirePermission(PermissionDNSView)).Get("/domains/{id}/dns-records", a.handleDNSRecords)
+	r.With(a.requireAPITokenScope("dns:check"), a.requireAdminAccess, a.requirePermission(PermissionDNSCheck)).Post("/domains/{id}/dns-check", a.handleDNSCheck)
+	r.With(a.requireAPITokenScope("mailboxes:read"), a.requireAdminAccess, a.requireAnyPermission(PermissionMailboxesView, PermissionMessagesView)).Get("/mailboxes", a.handleOpenAPIListMailboxes)
+	r.With(a.requireAPITokenScope("mailboxes:write"), a.requireAdminAccess, a.requirePermission(PermissionMailboxesCreate)).Post("/mailboxes", a.handleOpenAPICreateMailbox)
+	r.With(a.requireAPITokenScope("mailboxes:read"), a.requireAdminAccess, a.requireAnyPermission(PermissionMailboxesView, PermissionMessagesView)).Get("/mailboxes/{id}", a.handleOpenAPIGetMailbox)
+	r.With(a.requireAPITokenScope("mailboxes:write"), a.requireAdminAccess, a.requirePermission(PermissionMailboxesUpdate)).Post("/mailboxes/{id}", a.handleOpenAPIUpdateMailbox)
+	r.With(a.requireAPITokenScope("mailboxes:write"), a.requireAdminAccess, a.requirePermission(PermissionUsersResetPassword)).Post("/mailboxes/{id}/password", a.handleOpenAPIResetMailboxPassword)
+	r.With(a.requireAPITokenScope("mailboxes:write"), a.requireAdminAccess, a.requirePermission(PermissionMailboxesDelete)).Delete("/mailboxes/{id}", a.handleOpenAPIDeleteMailbox)
+	r.With(a.requireAPITokenScope("messages:send"), a.requirePermission(PermissionMailSend)).Post("/send", a.handleOpenAPISendMail)
+	r.With(a.requireAPITokenScope("messages:read"), a.requirePermission(PermissionMailRead)).Get("/send", a.handleOpenAPIListSends)
+	r.With(a.requireAPITokenScope("messages:read"), a.requirePermission(PermissionMailRead)).Get("/send/{id}", a.handleOpenAPISendStatus)
+	r.With(a.requireAPITokenScope("messages:read"), a.requirePermission(PermissionMailRead)).Get("/send/{id}/events", a.handleOpenAPISendEvents)
+	r.With(a.requireAPITokenScope("messages:manage"), a.requirePermission(PermissionMailSend)).Post("/send/{id}/retry", a.handleOpenAPIRetrySend)
+	r.With(a.requireAPITokenScope("messages:manage"), a.requirePermission(PermissionMailSend)).Post("/send/{id}/cancel", a.handleOpenAPICancelSend)
+	r.With(a.requireAPITokenScope("messages:read"), a.requirePermission(PermissionMailRead)).Get("/mailboxes/{id}/messages", a.handleOpenAPIMailboxMessages)
+	r.With(a.requireAPITokenScope("messages:read"), a.requirePermission(PermissionMailRead)).Get("/messages/{id}", a.handleOpenAPIMessage)
+	r.With(a.requireAPITokenScope("messages:read"), a.requirePermission(PermissionMailAttachments)).Get("/attachments/{id}", a.handleAttachment)
+	r.With(a.requireAPITokenScope("aliases:read"), a.requireAdminAccess, a.requirePermission(PermissionAliasesView)).Get("/aliases", a.handleOpenAPIListAliases)
+	r.With(a.requireAPITokenScope("aliases:write"), a.requireAdminAccess, a.requirePermission(PermissionAliasesCreate)).Post("/aliases", a.handleCreateAlias)
+	r.With(a.requireAPITokenScope("aliases:read"), a.requireAdminAccess, a.requirePermission(PermissionAliasesView)).Get("/aliases/{id}", a.handleOpenAPIGetAlias)
+	r.With(a.requireAPITokenScope("aliases:write"), a.requireAdminAccess, a.requirePermission(PermissionAliasesUpdate)).Post("/aliases/{id}", a.handleUpdateAlias)
+	r.With(a.requireAPITokenScope("aliases:write"), a.requireAdminAccess, a.requirePermission(PermissionAliasesDelete)).Delete("/aliases/{id}", a.handleDeleteAlias)
+}
+
 func (a *App) corsMiddleware(next http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		origin := r.Header.Get("Origin")
@@ -138,7 +219,7 @@ func (a *App) corsMiddleware(next http.Handler) http.Handler {
 			w.Header().Set("Access-Control-Allow-Origin", origin)
 			w.Header().Set("Vary", "Origin")
 			w.Header().Set("Access-Control-Allow-Credentials", "true")
-			w.Header().Set("Access-Control-Allow-Headers", "Content-Type")
+			w.Header().Set("Access-Control-Allow-Headers", "Content-Type, Authorization, Idempotency-Key")
 			w.Header().Set("Access-Control-Allow-Methods", "GET,POST,DELETE,OPTIONS")
 		}
 		if r.Method == http.MethodOptions {
@@ -160,6 +241,32 @@ func (a *App) requireAuth(next http.Handler) http.Handler {
 	})
 }
 
+func (a *App) requireAPIToken(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		user, scopes, err := a.authenticateAPIToken(r)
+		if err != nil {
+			respondError(w, http.StatusUnauthorized, "api token required")
+			return
+		}
+		ctx := context.WithValue(r.Context(), userContextKey, user)
+		ctx = context.WithValue(ctx, apiTokenScopesContextKey, scopes)
+		next.ServeHTTP(w, r.WithContext(ctx))
+	})
+}
+
+func (a *App) requireAPITokenScope(scope string) func(http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			scopes, _ := r.Context().Value(apiTokenScopesContextKey).(map[string]bool)
+			if !scopes["*"] && !scopes[scope] {
+				respondError(w, http.StatusForbidden, "api token scope required: "+scope)
+				return
+			}
+			next.ServeHTTP(w, r)
+		})
+	}
+}
+
 func currentUser(r *http.Request) *User {
 	user, _ := r.Context().Value(userContextKey).(*User)
 	return user
@@ -170,17 +277,19 @@ func (a *App) authenticateRequest(r *http.Request) (*User, error) {
 	if err != nil || cookie.Value == "" {
 		return nil, errors.New("no session")
 	}
-	row := a.db.QueryRowContext(r.Context(), `SELECT u.id,u.email,u.display_name,u.role,u.disabled,u.two_factor_enabled,u.created_at
+	row := a.db.QueryRowContext(r.Context(), `SELECT u.id,u.login_name,u.email,u.display_name,u.role,u.disabled,u.two_factor_enabled,u.mailbox_limit_override,u.created_at
 		FROM sessions s JOIN users u ON u.id=s.user_id
 		WHERE s.token_hash=? AND s.expires_at > ?`, hashToken(cookie.Value), a.now().UTC().Format(time.RFC3339Nano))
 	var u User
 	var disabled, twoFactorEnabled int
+	var mailboxLimitOverride sql.NullInt64
 	var created string
-	if err := row.Scan(&u.ID, &u.Email, &u.DisplayName, &u.Role, &disabled, &twoFactorEnabled, &created); err != nil {
+	if err := row.Scan(&u.ID, &u.LoginName, &u.Email, &u.DisplayName, &u.Role, &disabled, &twoFactorEnabled, &mailboxLimitOverride, &created); err != nil {
 		return nil, err
 	}
 	u.Disabled = intBool(disabled)
 	u.TwoFactorEnabled = intBool(twoFactorEnabled)
+	u.MailboxLimitOverride = intPtrFromNull(mailboxLimitOverride)
 	u.CreatedAt = parseTime(created)
 	if u.Disabled {
 		return nil, errors.New("disabled")
@@ -191,13 +300,60 @@ func (a *App) authenticateRequest(r *http.Request) (*User, error) {
 	return &u, nil
 }
 
+func (a *App) authenticateAPIToken(r *http.Request) (*User, map[string]bool, error) {
+	token := bearerToken(r)
+	if token == "" {
+		return nil, nil, errors.New("no api token")
+	}
+	now := a.now().UTC().Format(time.RFC3339Nano)
+	row := a.db.QueryRowContext(r.Context(), `SELECT at.id,at.scopes_json,u.id,u.login_name,u.email,u.display_name,u.role,u.disabled,u.two_factor_enabled,u.mailbox_limit_override,u.created_at
+		FROM api_tokens at JOIN users u ON u.id=at.user_id
+		WHERE at.token_hash=? AND at.disabled=0 AND at.expires_at > ?`, hashToken(token), now)
+	var tokenID, scopesJSON string
+	var u User
+	var disabled, twoFactorEnabled int
+	var mailboxLimitOverride sql.NullInt64
+	var created string
+	if err := row.Scan(&tokenID, &scopesJSON, &u.ID, &u.LoginName, &u.Email, &u.DisplayName, &u.Role, &disabled, &twoFactorEnabled, &mailboxLimitOverride, &created); err != nil {
+		return nil, nil, err
+	}
+	u.Disabled = intBool(disabled)
+	u.TwoFactorEnabled = intBool(twoFactorEnabled)
+	u.MailboxLimitOverride = intPtrFromNull(mailboxLimitOverride)
+	u.CreatedAt = parseTime(created)
+	if u.Disabled {
+		return nil, nil, errors.New("disabled")
+	}
+	if err := a.attachUserAuthorization(r.Context(), &u); err != nil {
+		return nil, nil, err
+	}
+	_, _ = a.db.ExecContext(r.Context(), `UPDATE api_tokens SET last_used_at=? WHERE id=?`, now, tokenID)
+	scopes := map[string]bool{}
+	for _, scope := range jsonDecodeSlice(scopesJSON) {
+		scopes[scope] = true
+	}
+	return &u, scopes, nil
+}
+
+func bearerToken(r *http.Request) string {
+	fields := strings.Fields(strings.TrimSpace(r.Header.Get("Authorization")))
+	if len(fields) != 2 || !strings.EqualFold(fields[0], "Bearer") {
+		return ""
+	}
+	return fields[1]
+}
+
 func (a *App) userByEmail(ctx context.Context, email string) (*User, string, error) {
-	row := a.db.QueryRowContext(ctx, `SELECT id,email,display_name,role,password_hash,disabled,two_factor_enabled,created_at FROM users WHERE email=?`, email)
+	loginName := normalizeLoginName(email)
+	row := a.db.QueryRowContext(ctx, `SELECT id,login_name,email,display_name,role,password_hash,disabled,two_factor_enabled,mailbox_limit_override,created_at
+		FROM users WHERE login_name=? OR email=?
+		ORDER BY CASE WHEN login_name=? THEN 0 ELSE 1 END LIMIT 1`, loginName, loginName, loginName)
 	var u User
 	var passwordHash string
 	var disabled, twoFactorEnabled int
+	var mailboxLimitOverride sql.NullInt64
 	var created string
-	if err := row.Scan(&u.ID, &u.Email, &u.DisplayName, &u.Role, &passwordHash, &disabled, &twoFactorEnabled, &created); err != nil {
+	if err := row.Scan(&u.ID, &u.LoginName, &u.Email, &u.DisplayName, &u.Role, &passwordHash, &disabled, &twoFactorEnabled, &mailboxLimitOverride, &created); err != nil {
 		if errors.Is(err, sql.ErrNoRows) {
 			return nil, "", errNotFound
 		}
@@ -205,6 +361,7 @@ func (a *App) userByEmail(ctx context.Context, email string) (*User, string, err
 	}
 	u.Disabled = intBool(disabled)
 	u.TwoFactorEnabled = intBool(twoFactorEnabled)
+	u.MailboxLimitOverride = intPtrFromNull(mailboxLimitOverride)
 	u.CreatedAt = parseTime(created)
 	if err := a.attachUserAuthorization(ctx, &u); err != nil {
 		return nil, "", err
@@ -213,11 +370,12 @@ func (a *App) userByEmail(ctx context.Context, email string) (*User, string, err
 }
 
 func (a *App) userByID(ctx context.Context, id string) (*User, error) {
-	row := a.db.QueryRowContext(ctx, `SELECT id,email,display_name,role,disabled,two_factor_enabled,created_at FROM users WHERE id=?`, id)
+	row := a.db.QueryRowContext(ctx, `SELECT id,login_name,email,display_name,role,disabled,two_factor_enabled,mailbox_limit_override,created_at FROM users WHERE id=?`, id)
 	var u User
 	var disabled, twoFactorEnabled int
+	var mailboxLimitOverride sql.NullInt64
 	var created string
-	if err := row.Scan(&u.ID, &u.Email, &u.DisplayName, &u.Role, &disabled, &twoFactorEnabled, &created); err != nil {
+	if err := row.Scan(&u.ID, &u.LoginName, &u.Email, &u.DisplayName, &u.Role, &disabled, &twoFactorEnabled, &mailboxLimitOverride, &created); err != nil {
 		if errors.Is(err, sql.ErrNoRows) {
 			return nil, errNotFound
 		}
@@ -225,6 +383,7 @@ func (a *App) userByID(ctx context.Context, id string) (*User, error) {
 	}
 	u.Disabled = intBool(disabled)
 	u.TwoFactorEnabled = intBool(twoFactorEnabled)
+	u.MailboxLimitOverride = intPtrFromNull(mailboxLimitOverride)
 	u.CreatedAt = parseTime(created)
 	if err := a.attachUserAuthorization(ctx, &u); err != nil {
 		return nil, err

apps/api/internal/app/send_queue.go

@@ -16,15 +16,21 @@ const (
 	sendQueueStatusSending   = "sending"
 	sendQueueStatusDelivered = "delivered"
 	sendQueueStatusFailed    = "failed"
+	sendQueueStatusCanceled  = "canceled"
 
 	sendAuditAccepted  = "accepted"
 	sendAuditQueued    = "queued"
 	sendAuditDelivered = "delivered"
 	sendAuditFailed    = "failed"
 	sendAuditRetry     = "retry"
+	sendAuditCanceled  = "canceled"
 
-	sendSourceWebmail    = "webmail"
-	sendSourceSubmission = "submission"
+	sendSourceWebmail                = "webmail"
+	sendSourceSubmission             = "submission"
+	sendSourceOpenAPI                = "open_api"
+	sendSourceForwarding             = "forwarding"
+	sendSourceRuleForwarding         = "rule_forwarding"
+	sendSourceForwardingVerification = "forwarding_verification"
 
 	sendQueueStaleAfter  = 15 * time.Minute
 	sendQueueConcurrency = 4
@@ -85,7 +91,7 @@ func (a *App) enqueueSend(ctx context.Context, in sendQueueInput) (string, error
 			return "", err
 		}
 		if existingID != id {
-			if status == sendQueueStatusDelivered || (status == sendQueueStatusFailed && attemptCount >= maxAttempts) {
+			if status == sendQueueStatusDelivered || status == sendQueueStatusCanceled || (status == sendQueueStatusFailed && attemptCount >= maxAttempts) {
 				_, err := a.db.ExecContext(ctx, `UPDATE send_queue SET user_id=?,sent_message_id=?,mail_from=?,header_from=?,recipients_json=?,mime_base64=?,status=?,attempt_count=0,next_attempt_at=?,last_error='',updated_at=?,delivered_at=NULL WHERE id=? AND status=?`,
 					in.UserID, in.SentMessageID, normalizeEmail(in.MailFrom), normalizeEmail(in.HeaderFrom), recipientsJSON, mimeBase64, sendQueueStatusQueued, now.Format(time.RFC3339Nano), now.Format(time.RFC3339Nano), existingID, status)
 				if err != nil {
@@ -124,6 +130,12 @@ func (a *App) sendQueueWorker(ctx context.Context) {
 	ticker := time.NewTicker(10 * time.Second)
 	defer ticker.Stop()
 	for {
+		select {
+		case <-ctx.Done():
+			a.log.Info("send queue worker stopped")
+			return
+		default:
+		}
 		if err := a.processDueSendQueue(ctx); err != nil {
 			a.log.Warn("send queue worker failed", "error", err)
 		}
@@ -230,12 +242,12 @@ func (a *App) recoverStaleSendQueueItems(ctx context.Context) error {
 			}
 			continue
 		}
-		res, err := a.db.ExecContext(ctx, `UPDATE send_queue SET status=?,next_attempt_at=?,last_error=?,updated_at=? WHERE id=? AND status=?`, sendQueueStatusFailed, now, "send attempt interrupted", now, item.ID, sendQueueStatusSending)
+		res, err := a.db.ExecContext(ctx, `UPDATE send_queue SET status=?,next_attempt_at=?,last_error=?,updated_at=? WHERE id=? AND status=?`, sendQueueStatusQueued, now, "send attempt interrupted", now, item.ID, sendQueueStatusSending)
 		if err != nil {
 			return err
 		}
 		if n, _ := res.RowsAffected(); n > 0 {
-			a.recordSendAudit(ctx, sendAuditRetry, sendQueueStatusFailed, sendAuditInputFromQueue(item, "send attempt interrupted"))
+			a.recordSendAudit(ctx, sendAuditRetry, sendQueueStatusQueued, sendAuditInputFromQueue(item, "send attempt interrupted"))
 		}
 	}
 	return nil
@@ -356,10 +368,26 @@ func (a *App) recordSendAudit(ctx context.Context, event, status string, in send
 	if source == "" {
 		source = "unknown"
 	}
-	_, err := a.db.ExecContext(ctx, `INSERT INTO send_audit_events(id,queue_id,user_id,mailbox_id,sent_message_id,source,event,status,mail_from,header_from,recipients_json,error,created_at)
-		VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?)`, newID("audit"), in.QueueID, in.UserID, in.MailboxID, in.SentMessageID, source, event, status, normalizeEmail(in.MailFrom), normalizeEmail(in.HeaderFrom), jsonEncode(dedupeEmails(in.Recipients)), in.Error, a.now().UTC().Format(time.RFC3339Nano))
+	id := newID("audit")
+	createdAt := a.now().UTC()
+	item := SendAuditEvent{ID: id, QueueID: in.QueueID, MailboxID: in.MailboxID, SentMessageID: in.SentMessageID, Source: source, Event: event, Status: status, MailFrom: normalizeEmail(in.MailFrom), HeaderFrom: normalizeEmail(in.HeaderFrom), Recipients: dedupeEmails(in.Recipients), Error: in.Error, CreatedAt: createdAt}
+	tx, err := a.db.BeginTx(ctx, nil)
 	if err != nil {
+		a.log.Warn("failed to start send audit transaction", "event", event, "error", err)
+		return
+	}
+	defer tx.Rollback()
+	if _, err := tx.ExecContext(ctx, `INSERT INTO send_audit_events(id,queue_id,user_id,mailbox_id,sent_message_id,source,event,status,mail_from,header_from,recipients_json,error,created_at)
+		VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?)`, id, in.QueueID, in.UserID, in.MailboxID, in.SentMessageID, source, event, status, item.MailFrom, item.HeaderFrom, jsonEncode(item.Recipients), in.Error, createdAt.Format(time.RFC3339Nano)); err != nil {
 		a.log.Warn("failed to record send audit", "event", event, "error", err)
+		return
+	}
+	if err := a.enqueueStatusWebhook(ctx, tx, "audit:"+id, "send."+event, in.MailboxID, item); err != nil {
+		a.log.Warn("failed to enqueue send status webhook", "event", event, "error", err)
+		return
+	}
+	if err := tx.Commit(); err != nil {
+		a.log.Warn("failed to commit send audit", "event", event, "error", err)
 	}
 }
 

apps/api/internal/app/settings_handlers.go

@@ -10,63 +10,80 @@ import (
 )
 
 type SystemSettings struct {
-	PublicHostname          string   `json:"publicHostname"`
-	PublicBaseURL           string   `json:"publicBaseUrl"`
-	SMTPHost                string   `json:"smtpHost"`
-	SMTPPort                string   `json:"smtpPort"`
-	SMTPUsername            string   `json:"smtpUsername"`
-	SMTPPasswordSet         bool     `json:"smtpPasswordSet"`
-	SMTPRequireTLS          bool     `json:"smtpRequireTls"`
-	MaildirRoot             string   `json:"maildirRoot"`
-	MaildirScanSeconds      int      `json:"maildirScanSeconds"`
-	SessionTTLHours         int      `json:"sessionTtlHours"`
-	AllowInsecureHTTP       bool     `json:"allowInsecureHttp"`
-	OpenRegistration        bool     `json:"openRegistration"`
-	TwoFactorEnabled        bool     `json:"twoFactorEnabled"`
-	TurnstileEnabled        bool     `json:"turnstileEnabled"`
-	TurnstileSiteKey        string   `json:"turnstileSiteKey"`
-	TurnstileSecretSet      bool     `json:"turnstileSecretSet"`
-	CatchAllEnabled         bool     `json:"catchAllEnabled"`
-	MailAutoRefresh         bool     `json:"mailAutoRefresh"`
-	MailRefreshSeconds      int      `json:"mailRefreshSeconds"`
-	UserMailboxApplyEnabled bool     `json:"userMailboxApplyEnabled"`
-	UserMailboxDomainIDs    []string `json:"userMailboxDomainIds"`
-	ReservedMailboxPrefixes string   `json:"reservedMailboxPrefixes"`
+	PublicHostname                     string   `json:"publicHostname"`
+	PublicBaseURL                      string   `json:"publicBaseUrl"`
+	SMTPHost                           string   `json:"smtpHost"`
+	SMTPPort                           string   `json:"smtpPort"`
+	SMTPUsername                       string   `json:"smtpUsername"`
+	SMTPPasswordSet                    bool     `json:"smtpPasswordSet"`
+	SMTPRequireTLS                     bool     `json:"smtpRequireTls"`
+	MaildirRoot                        string   `json:"maildirRoot"`
+	MaildirScanSeconds                 int      `json:"maildirScanSeconds"`
+	SessionTTLHours                    int      `json:"sessionTtlHours"`
+	AllowInsecureHTTP                  bool     `json:"allowInsecureHttp"`
+	OpenRegistration                   bool     `json:"openRegistration"`
+	TwoFactorEnabled                   bool     `json:"twoFactorEnabled"`
+	TurnstileEnabled                   bool     `json:"turnstileEnabled"`
+	TurnstileSiteKey                   string   `json:"turnstileSiteKey"`
+	TurnstileSecretSet                 bool     `json:"turnstileSecretSet"`
+	CatchAllEnabled                    bool     `json:"catchAllEnabled"`
+	MailAutoRefresh                    bool     `json:"mailAutoRefresh"`
+	MailRefreshSeconds                 int      `json:"mailRefreshSeconds"`
+	UserMailboxApplyEnabled            bool     `json:"userMailboxApplyEnabled"`
+	UserMailboxDomainIDs               []string `json:"userMailboxDomainIds"`
+	ReservedMailboxPrefixes            string   `json:"reservedMailboxPrefixes"`
+	ExternalIMAPEnabled                bool     `json:"externalImapEnabled"`
+	ExternalIMAPSecretSet              bool     `json:"externalImapSecretSet"`
+	ExternalIMAPSyncSeconds            int      `json:"externalImapSyncSeconds"`
+	ExternalIMAPAllowPrivateHosts      bool     `json:"externalImapAllowPrivateHosts"`
+	ExternalIMAPGmailClientID          string   `json:"externalImapGmailClientId"`
+	ExternalIMAPGmailClientSecretSet   bool     `json:"externalImapGmailClientSecretSet"`
+	ExternalIMAPOutlookClientID        string   `json:"externalImapOutlookClientId"`
+	ExternalIMAPOutlookClientSecretSet bool     `json:"externalImapOutlookClientSecretSet"`
 }
 
 type systemSettingsUpdate struct {
-	PublicHostname          string   `json:"publicHostname"`
-	PublicBaseURL           string   `json:"publicBaseUrl"`
-	SMTPHost                string   `json:"smtpHost"`
-	SMTPPort                string   `json:"smtpPort"`
-	SMTPUsername            string   `json:"smtpUsername"`
-	SMTPPassword            string   `json:"smtpPassword"`
-	SMTPRequireTLS          bool     `json:"smtpRequireTls"`
-	MaildirRoot             string   `json:"maildirRoot"`
-	MaildirScanSeconds      int      `json:"maildirScanSeconds"`
-	SessionTTLHours         int      `json:"sessionTtlHours"`
-	AllowInsecureHTTP       bool     `json:"allowInsecureHttp"`
-	OpenRegistration        bool     `json:"openRegistration"`
-	TwoFactorEnabled        bool     `json:"twoFactorEnabled"`
-	TurnstileEnabled        bool     `json:"turnstileEnabled"`
-	TurnstileSiteKey        string   `json:"turnstileSiteKey"`
-	TurnstileSecretKey      string   `json:"turnstileSecretKey"`
-	CatchAllEnabled         bool     `json:"catchAllEnabled"`
-	MailAutoRefresh         bool     `json:"mailAutoRefresh"`
-	MailRefreshSeconds      int      `json:"mailRefreshSeconds"`
-	UserMailboxApplyEnabled bool     `json:"userMailboxApplyEnabled"`
-	UserMailboxDomainIDs    []string `json:"userMailboxDomainIds"`
-	ReservedMailboxPrefixes string   `json:"reservedMailboxPrefixes"`
+	PublicHostname                  string   `json:"publicHostname"`
+	PublicBaseURL                   string   `json:"publicBaseUrl"`
+	SMTPHost                        string   `json:"smtpHost"`
+	SMTPPort                        string   `json:"smtpPort"`
+	SMTPUsername                    string   `json:"smtpUsername"`
+	SMTPPassword                    string   `json:"smtpPassword"`
+	SMTPRequireTLS                  bool     `json:"smtpRequireTls"`
+	MaildirRoot                     string   `json:"maildirRoot"`
+	MaildirScanSeconds              int      `json:"maildirScanSeconds"`
+	SessionTTLHours                 int      `json:"sessionTtlHours"`
+	AllowInsecureHTTP               bool     `json:"allowInsecureHttp"`
+	OpenRegistration                bool     `json:"openRegistration"`
+	TwoFactorEnabled                bool     `json:"twoFactorEnabled"`
+	TurnstileEnabled                bool     `json:"turnstileEnabled"`
+	TurnstileSiteKey                string   `json:"turnstileSiteKey"`
+	TurnstileSecretKey              string   `json:"turnstileSecretKey"`
+	CatchAllEnabled                 bool     `json:"catchAllEnabled"`
+	MailAutoRefresh                 bool     `json:"mailAutoRefresh"`
+	MailRefreshSeconds              int      `json:"mailRefreshSeconds"`
+	UserMailboxApplyEnabled         bool     `json:"userMailboxApplyEnabled"`
+	UserMailboxDomainIDs            []string `json:"userMailboxDomainIds"`
+	ReservedMailboxPrefixes         string   `json:"reservedMailboxPrefixes"`
+	ExternalIMAPEnabled             bool     `json:"externalImapEnabled"`
+	ExternalIMAPSecretKey           string   `json:"externalImapSecretKey"`
+	ExternalIMAPSyncSeconds         int      `json:"externalImapSyncSeconds"`
+	ExternalIMAPAllowPrivateHosts   bool     `json:"externalImapAllowPrivateHosts"`
+	ExternalIMAPGmailClientID       string   `json:"externalImapGmailClientId"`
+	ExternalIMAPGmailClientSecret   string   `json:"externalImapGmailClientSecret"`
+	ExternalIMAPOutlookClientID     string   `json:"externalImapOutlookClientId"`
+	ExternalIMAPOutlookClientSecret string   `json:"externalImapOutlookClientSecret"`
 }
 
 type PublicSettings struct {
-	OpenRegistration bool           `json:"openRegistration"`
-	TurnstileEnabled bool           `json:"turnstileEnabled"`
-	TurnstileSiteKey string         `json:"turnstileSiteKey"`
-	PublicHostname   string         `json:"publicHostname"`
-	MailAutoRefresh  bool           `json:"mailAutoRefresh"`
-	MailRefreshMs    int            `json:"mailRefreshMs"`
-	MailboxDomains   []PublicDomain `json:"mailboxDomains,omitempty"`
+	OpenRegistration    bool           `json:"openRegistration"`
+	TurnstileEnabled    bool           `json:"turnstileEnabled"`
+	TurnstileSiteKey    string         `json:"turnstileSiteKey"`
+	PublicHostname      string         `json:"publicHostname"`
+	MailAutoRefresh     bool           `json:"mailAutoRefresh"`
+	MailRefreshMs       int            `json:"mailRefreshMs"`
+	ExternalIMAPEnabled bool           `json:"externalImapEnabled"`
+	MailboxDomains      []PublicDomain `json:"mailboxDomains,omitempty"`
 }
 
 type PublicDomain struct {
@@ -88,7 +105,7 @@ func (a *App) handlePublicSettings(w http.ResponseWriter, r *http.Request) {
 	if refreshSeconds <= 0 {
 		refreshSeconds = 30
 	}
-	settings := PublicSettings{OpenRegistration: a.cfg.OpenRegistration, TurnstileEnabled: enabled, TurnstileSiteKey: a.cfg.TurnstileSiteKey, PublicHostname: a.cfg.PublicHostname, MailAutoRefresh: a.cfg.MailAutoRefresh, MailRefreshMs: refreshSeconds * 1000}
+	settings := PublicSettings{OpenRegistration: a.cfg.OpenRegistration, TurnstileEnabled: enabled, TurnstileSiteKey: a.cfg.TurnstileSiteKey, PublicHostname: a.cfg.PublicHostname, MailAutoRefresh: a.cfg.MailAutoRefresh, MailRefreshMs: refreshSeconds * 1000, ExternalIMAPEnabled: a.cfg.ExternalIMAPEnabled}
 
 	// Include available domains for mailbox creation during registration
 	if a.cfg.OpenRegistration {
@@ -165,6 +182,27 @@ func (a *App) handleUpdateSystemSettings(w http.ResponseWriter, r *http.Request)
 	next.UserMailboxApplyEnabled = req.UserMailboxApplyEnabled
 	next.UserMailboxDomainIDs = strings.Join(cleanIDList(req.UserMailboxDomainIDs), ",")
 	next.ReservedMailboxPrefixes = strings.Join(parseReservedPrefixes(req.ReservedMailboxPrefixes), ",")
+	next.ExternalIMAPEnabled = req.ExternalIMAPEnabled
+	if strings.TrimSpace(req.ExternalIMAPSecretKey) != "" {
+		next.ExternalIMAPSecretKey = strings.TrimSpace(req.ExternalIMAPSecretKey)
+	}
+	if req.ExternalIMAPSyncSeconds <= 0 {
+		req.ExternalIMAPSyncSeconds = 300
+	}
+	next.ExternalIMAPSyncSeconds = req.ExternalIMAPSyncSeconds
+	next.ExternalIMAPAllowPrivateHosts = req.ExternalIMAPAllowPrivateHosts
+	next.ExternalIMAPGmailClientID = strings.TrimSpace(req.ExternalIMAPGmailClientID)
+	if strings.TrimSpace(req.ExternalIMAPGmailClientSecret) != "" {
+		next.ExternalIMAPGmailClientSecret = strings.TrimSpace(req.ExternalIMAPGmailClientSecret)
+	}
+	next.ExternalIMAPOutlookClientID = strings.TrimSpace(req.ExternalIMAPOutlookClientID)
+	if strings.TrimSpace(req.ExternalIMAPOutlookClientSecret) != "" {
+		next.ExternalIMAPOutlookClientSecret = strings.TrimSpace(req.ExternalIMAPOutlookClientSecret)
+	}
+	if next.ExternalIMAPEnabled && strings.TrimSpace(next.ExternalIMAPSecretKey) == "" {
+		badRequest(w, errors.New("外部 IMAP 加密密钥未设置"))
+		return
+	}
 
 	if err := a.saveSystemSettings(r.Context(), next); err != nil {
 		respondError(w, http.StatusInternalServerError, "failed to save settings")
@@ -213,7 +251,7 @@ func (a *App) handleTestSMTP(w http.ResponseWriter, r *http.Request) {
 		domain = "lanqin.local"
 	}
 	now := a.now().UTC()
-	subject := "LanQin Email SMTP 测试"
+	subject := "NewSzxcn 邮箱 SMTP 测试"
 	bodyText := "这是一封 SMTP 测试邮件。"
 	bodyHTML := "<p>这是一封 SMTP 测试邮件。</p>"
 	if tpl, err := a.mailTemplate(r.Context(), smtpTestTemplateKey); err == nil {
@@ -248,28 +286,36 @@ func (a *App) handleTestSMTP(w http.ResponseWriter, r *http.Request) {
 
 func (a *App) systemSettingsSnapshot() SystemSettings {
 	return SystemSettings{
-		PublicHostname:          a.cfg.PublicHostname,
-		PublicBaseURL:           a.cfg.PublicBaseURL,
-		SMTPHost:                a.cfg.SMTPHost,
-		SMTPPort:                a.cfg.SMTPPort,
-		SMTPUsername:            a.cfg.SMTPUsername,
-		SMTPPasswordSet:         strings.TrimSpace(a.cfg.SMTPPassword) != "",
-		SMTPRequireTLS:          a.cfg.SMTPRequireTLS,
-		MaildirRoot:             a.cfg.MaildirRoot,
-		MaildirScanSeconds:      a.cfg.MaildirScanSeconds,
-		SessionTTLHours:         a.cfg.SessionTTLHours,
-		AllowInsecureHTTP:       a.cfg.AllowInsecureHTTP,
-		OpenRegistration:        a.cfg.OpenRegistration,
-		TwoFactorEnabled:        a.cfg.TwoFactorEnabled,
-		TurnstileEnabled:        a.cfg.TurnstileEnabled,
-		TurnstileSiteKey:        a.cfg.TurnstileSiteKey,
-		TurnstileSecretSet:      strings.TrimSpace(a.cfg.TurnstileSecretKey) != "",
-		CatchAllEnabled:         a.cfg.CatchAllEnabled,
-		MailAutoRefresh:         a.cfg.MailAutoRefresh,
-		MailRefreshSeconds:      a.cfg.MailRefreshSeconds,
-		UserMailboxApplyEnabled: a.cfg.UserMailboxApplyEnabled,
-		UserMailboxDomainIDs:    cleanIDList(strings.Split(a.cfg.UserMailboxDomainIDs, ",")),
-		ReservedMailboxPrefixes: strings.Join(parseReservedPrefixes(a.cfg.ReservedMailboxPrefixes), "\n"),
+		PublicHostname:                     a.cfg.PublicHostname,
+		PublicBaseURL:                      a.cfg.PublicBaseURL,
+		SMTPHost:                           a.cfg.SMTPHost,
+		SMTPPort:                           a.cfg.SMTPPort,
+		SMTPUsername:                       a.cfg.SMTPUsername,
+		SMTPPasswordSet:                    strings.TrimSpace(a.cfg.SMTPPassword) != "",
+		SMTPRequireTLS:                     a.cfg.SMTPRequireTLS,
+		MaildirRoot:                        a.cfg.MaildirRoot,
+		MaildirScanSeconds:                 a.cfg.MaildirScanSeconds,
+		SessionTTLHours:                    a.cfg.SessionTTLHours,
+		AllowInsecureHTTP:                  a.cfg.AllowInsecureHTTP,
+		OpenRegistration:                   a.cfg.OpenRegistration,
+		TwoFactorEnabled:                   a.cfg.TwoFactorEnabled,
+		TurnstileEnabled:                   a.cfg.TurnstileEnabled,
+		TurnstileSiteKey:                   a.cfg.TurnstileSiteKey,
+		TurnstileSecretSet:                 strings.TrimSpace(a.cfg.TurnstileSecretKey) != "",
+		CatchAllEnabled:                    a.cfg.CatchAllEnabled,
+		MailAutoRefresh:                    a.cfg.MailAutoRefresh,
+		MailRefreshSeconds:                 a.cfg.MailRefreshSeconds,
+		UserMailboxApplyEnabled:            a.cfg.UserMailboxApplyEnabled,
+		UserMailboxDomainIDs:               cleanIDList(strings.Split(a.cfg.UserMailboxDomainIDs, ",")),
+		ReservedMailboxPrefixes:            strings.Join(parseReservedPrefixes(a.cfg.ReservedMailboxPrefixes), "\n"),
+		ExternalIMAPEnabled:                a.cfg.ExternalIMAPEnabled,
+		ExternalIMAPSecretSet:              strings.TrimSpace(a.cfg.ExternalIMAPSecretKey) != "",
+		ExternalIMAPSyncSeconds:            a.cfg.ExternalIMAPSyncSeconds,
+		ExternalIMAPAllowPrivateHosts:      a.cfg.ExternalIMAPAllowPrivateHosts,
+		ExternalIMAPGmailClientID:          a.cfg.ExternalIMAPGmailClientID,
+		ExternalIMAPGmailClientSecretSet:   strings.TrimSpace(a.cfg.ExternalIMAPGmailClientSecret) != "",
+		ExternalIMAPOutlookClientID:        a.cfg.ExternalIMAPOutlookClientID,
+		ExternalIMAPOutlookClientSecretSet: strings.TrimSpace(a.cfg.ExternalIMAPOutlookClientSecret) != "",
 	}
 }
 
@@ -335,6 +381,24 @@ func (a *App) loadPersistedSystemSettings(ctx context.Context) error {
 			a.cfg.UserMailboxDomainIDs = value
 		case "reservedMailboxPrefixes":
 			a.cfg.ReservedMailboxPrefixes = value
+		case "externalImapEnabled":
+			a.cfg.ExternalIMAPEnabled = value == "true"
+		case "externalImapSecretKey":
+			a.cfg.ExternalIMAPSecretKey = value
+		case "externalImapSyncSeconds":
+			if n, err := strconv.Atoi(value); err == nil && n > 0 {
+				a.cfg.ExternalIMAPSyncSeconds = n
+			}
+		case "externalImapAllowPrivateHosts":
+			a.cfg.ExternalIMAPAllowPrivateHosts = value == "true"
+		case "externalImapGmailClientId":
+			a.cfg.ExternalIMAPGmailClientID = value
+		case "externalImapGmailClientSecret":
+			a.cfg.ExternalIMAPGmailClientSecret = value
+		case "externalImapOutlookClientId":
+			a.cfg.ExternalIMAPOutlookClientID = value
+		case "externalImapOutlookClientSecret":
+			a.cfg.ExternalIMAPOutlookClientSecret = value
 		}
 	}
 	return rows.Err()
@@ -342,28 +406,36 @@ func (a *App) loadPersistedSystemSettings(ctx context.Context) error {
 
 func (a *App) saveSystemSettings(ctx context.Context, cfg Config) error {
 	values := map[string]string{
-		"publicHostname":          cfg.PublicHostname,
-		"publicBaseUrl":           cfg.PublicBaseURL,
-		"smtpHost":                cfg.SMTPHost,
-		"smtpPort":                cfg.SMTPPort,
-		"smtpUsername":            cfg.SMTPUsername,
-		"smtpPassword":            cfg.SMTPPassword,
-		"smtpRequireTls":          strconv.FormatBool(cfg.SMTPRequireTLS),
-		"maildirRoot":             cfg.MaildirRoot,
-		"maildirScanSeconds":      strconv.Itoa(cfg.MaildirScanSeconds),
-		"sessionTtlHours":         strconv.Itoa(cfg.SessionTTLHours),
-		"allowInsecureHttp":       strconv.FormatBool(cfg.AllowInsecureHTTP),
-		"openRegistration":        strconv.FormatBool(cfg.OpenRegistration),
-		"twoFactorEnabled":        strconv.FormatBool(cfg.TwoFactorEnabled),
-		"turnstileEnabled":        strconv.FormatBool(cfg.TurnstileEnabled),
-		"turnstileSiteKey":        cfg.TurnstileSiteKey,
-		"turnstileSecretKey":      cfg.TurnstileSecretKey,
-		"catchAllEnabled":         strconv.FormatBool(cfg.CatchAllEnabled),
-		"mailAutoRefresh":         strconv.FormatBool(cfg.MailAutoRefresh),
-		"mailRefreshSeconds":      strconv.Itoa(cfg.MailRefreshSeconds),
-		"userMailboxApplyEnabled": strconv.FormatBool(cfg.UserMailboxApplyEnabled),
-		"userMailboxDomainIds":    strings.Join(cleanIDList(strings.Split(cfg.UserMailboxDomainIDs, ",")), ","),
-		"reservedMailboxPrefixes": strings.Join(parseReservedPrefixes(cfg.ReservedMailboxPrefixes), ","),
+		"publicHostname":                  cfg.PublicHostname,
+		"publicBaseUrl":                   cfg.PublicBaseURL,
+		"smtpHost":                        cfg.SMTPHost,
+		"smtpPort":                        cfg.SMTPPort,
+		"smtpUsername":                    cfg.SMTPUsername,
+		"smtpPassword":                    cfg.SMTPPassword,
+		"smtpRequireTls":                  strconv.FormatBool(cfg.SMTPRequireTLS),
+		"maildirRoot":                     cfg.MaildirRoot,
+		"maildirScanSeconds":              strconv.Itoa(cfg.MaildirScanSeconds),
+		"sessionTtlHours":                 strconv.Itoa(cfg.SessionTTLHours),
+		"allowInsecureHttp":               strconv.FormatBool(cfg.AllowInsecureHTTP),
+		"openRegistration":                strconv.FormatBool(cfg.OpenRegistration),
+		"twoFactorEnabled":                strconv.FormatBool(cfg.TwoFactorEnabled),
+		"turnstileEnabled":                strconv.FormatBool(cfg.TurnstileEnabled),
+		"turnstileSiteKey":                cfg.TurnstileSiteKey,
+		"turnstileSecretKey":              cfg.TurnstileSecretKey,
+		"catchAllEnabled":                 strconv.FormatBool(cfg.CatchAllEnabled),
+		"mailAutoRefresh":                 strconv.FormatBool(cfg.MailAutoRefresh),
+		"mailRefreshSeconds":              strconv.Itoa(cfg.MailRefreshSeconds),
+		"userMailboxApplyEnabled":         strconv.FormatBool(cfg.UserMailboxApplyEnabled),
+		"userMailboxDomainIds":            strings.Join(cleanIDList(strings.Split(cfg.UserMailboxDomainIDs, ",")), ","),
+		"reservedMailboxPrefixes":         strings.Join(parseReservedPrefixes(cfg.ReservedMailboxPrefixes), ","),
+		"externalImapEnabled":             strconv.FormatBool(cfg.ExternalIMAPEnabled),
+		"externalImapSecretKey":           cfg.ExternalIMAPSecretKey,
+		"externalImapSyncSeconds":         strconv.Itoa(cfg.ExternalIMAPSyncSeconds),
+		"externalImapAllowPrivateHosts":   strconv.FormatBool(cfg.ExternalIMAPAllowPrivateHosts),
+		"externalImapGmailClientId":       cfg.ExternalIMAPGmailClientID,
+		"externalImapGmailClientSecret":   cfg.ExternalIMAPGmailClientSecret,
+		"externalImapOutlookClientId":     cfg.ExternalIMAPOutlookClientID,
+		"externalImapOutlookClientSecret": cfg.ExternalIMAPOutlookClientSecret,
 	}
 	now := a.now().UTC().Format(time.RFC3339Nano)
 	tx, err := a.db.BeginTx(ctx, nil)

apps/api/internal/app/status_webhook.go

@@ -0,0 +1,216 @@
+package app
+
+import (
+	"bytes"
+	"context"
+	"crypto/hmac"
+	"crypto/sha256"
+	"encoding/hex"
+	"errors"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+	"time"
+)
+
+const statusWebhookMaxAttempts = 10
+
+type statusWebhookEnvelope struct {
+	ID        string `json:"id"`
+	Type      string `json:"type"`
+	CreatedAt string `json:"createdAt"`
+	Data      any    `json:"data"`
+}
+
+func (a *App) enqueueStatusWebhook(ctx context.Context, db dbExecutor, eventKey, eventType, mailboxID string, data any) error {
+	if strings.TrimSpace(a.cfg.StatusWebhookURL) == "" {
+		return nil
+	}
+	now := a.now().UTC()
+	id := newID("whk")
+	payload := jsonEncode(statusWebhookEnvelope{ID: id, Type: eventType, CreatedAt: now.Format(time.RFC3339Nano), Data: data})
+	_, err := db.ExecContext(ctx, `INSERT OR IGNORE INTO status_webhook_outbox(id,event_key,event_type,mailbox_id,payload_json,next_attempt_at,created_at,updated_at)
+		VALUES(?,?,?,?,?,?,?,?)`, id, eventKey, eventType, mailboxID, payload, now.Format(time.RFC3339Nano), now.Format(time.RFC3339Nano), now.Format(time.RFC3339Nano))
+	return err
+}
+
+func (a *App) statusWebhookWorker(ctx context.Context) {
+	if strings.TrimSpace(a.cfg.StatusWebhookURL) == "" {
+		return
+	}
+	a.log.Info("status webhook worker started")
+	ticker := time.NewTicker(10 * time.Second)
+	defer ticker.Stop()
+	for {
+		if err := a.processDueStatusWebhooks(ctx); err != nil && !errors.Is(err, context.Canceled) {
+			a.log.Warn("status webhook worker failed", "error", err)
+		}
+		select {
+		case <-ctx.Done():
+			a.log.Info("status webhook worker stopped")
+			return
+		case <-ticker.C:
+		}
+	}
+}
+
+func (a *App) processDueStatusWebhooks(ctx context.Context) error {
+	if strings.TrimSpace(a.cfg.StatusWebhookURL) == "" {
+		return nil
+	}
+	_, _ = a.db.ExecContext(ctx, `DELETE FROM status_webhook_outbox
+		WHERE updated_at<? AND (delivered_at IS NOT NULL OR attempt_count>=?)`, a.now().UTC().Add(-30*24*time.Hour).Format(time.RFC3339Nano), statusWebhookMaxAttempts)
+	rows, err := a.db.QueryContext(ctx, `SELECT id,payload_json,attempt_count FROM status_webhook_outbox
+		WHERE delivered_at IS NULL AND attempt_count<? AND next_attempt_at<=? ORDER BY next_attempt_at,created_at LIMIT 20`, statusWebhookMaxAttempts, a.now().UTC().Format(time.RFC3339Nano))
+	if err != nil {
+		return err
+	}
+	type item struct {
+		id, payload string
+		attempt     int
+	}
+	items := []item{}
+	for rows.Next() {
+		var value item
+		if err := rows.Scan(&value.id, &value.payload, &value.attempt); err != nil {
+			rows.Close()
+			return err
+		}
+		items = append(items, value)
+	}
+	if err := rows.Close(); err != nil {
+		return err
+	}
+	for _, value := range items {
+		if err := a.deliverStatusWebhook(ctx, value.id, []byte(value.payload)); err != nil {
+			now := a.now().UTC()
+			next := now.Add(sendRetryDelay(value.attempt + 1))
+			_, _ = a.db.ExecContext(ctx, `UPDATE status_webhook_outbox SET attempt_count=attempt_count+1,next_attempt_at=?,last_error=?,updated_at=? WHERE id=? AND delivered_at IS NULL`, next.Format(time.RFC3339Nano), truncateWebhookError(err.Error()), now.Format(time.RFC3339Nano), value.id)
+			continue
+		}
+		now := a.now().UTC().Format(time.RFC3339Nano)
+		_, _ = a.db.ExecContext(ctx, `UPDATE status_webhook_outbox SET attempt_count=attempt_count+1,last_error='',updated_at=?,delivered_at=? WHERE id=? AND delivered_at IS NULL`, now, now, value.id)
+	}
+	return nil
+}
+
+func (a *App) deliverStatusWebhook(ctx context.Context, eventID string, payload []byte) error {
+	target, err := a.validatedStatusWebhookURL(ctx)
+	if err != nil {
+		return err
+	}
+	timestamp := strconv.FormatInt(a.now().UTC().Unix(), 10)
+	mac := hmac.New(sha256.New, []byte(a.cfg.StatusWebhookSecret))
+	_, _ = mac.Write([]byte(timestamp + "."))
+	_, _ = mac.Write(payload)
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, target.String(), bytes.NewReader(payload))
+	if err != nil {
+		return err
+	}
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("User-Agent", "NewSzxcn-Email-Webhook/1.0")
+	req.Header.Set("X-LanQin-Webhook-Id", eventID)
+	req.Header.Set("X-LanQin-Timestamp", timestamp)
+	req.Header.Set("X-LanQin-Signature", "sha256="+hex.EncodeToString(mac.Sum(nil)))
+	client := &http.Client{
+		Timeout:       10 * time.Second,
+		CheckRedirect: func(*http.Request, []*http.Request) error { return http.ErrUseLastResponse },
+		Transport:     &http.Transport{DialContext: a.statusWebhookDialContext, DisableKeepAlives: true, TLSHandshakeTimeout: 5 * time.Second, ResponseHeaderTimeout: 5 * time.Second},
+	}
+	resp, err := client.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	_, _ = io.Copy(io.Discard, io.LimitReader(resp.Body, 64<<10))
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		return fmt.Errorf("status webhook returned %d", resp.StatusCode)
+	}
+	return nil
+}
+
+func (a *App) validatedStatusWebhookURL(ctx context.Context) (*url.URL, error) {
+	if strings.TrimSpace(a.cfg.StatusWebhookSecret) == "" {
+		return nil, errors.New("LANQIN_STATUS_WEBHOOK_SECRET is required")
+	}
+	target, err := url.Parse(strings.TrimSpace(a.cfg.StatusWebhookURL))
+	if err != nil || target.Hostname() == "" || target.User != nil || target.Fragment != "" {
+		return nil, errors.New("invalid status webhook URL")
+	}
+	if target.Scheme != "https" && !(a.cfg.StatusWebhookAllowPrivateHosts && target.Scheme == "http") {
+		return nil, errors.New("status webhook URL must use HTTPS")
+	}
+	if !a.cfg.StatusWebhookAllowPrivateHosts {
+		if err := validatePublicWebhookHost(ctx, target.Hostname()); err != nil {
+			return nil, err
+		}
+	}
+	return target, nil
+}
+
+func (a *App) statusWebhookDialContext(ctx context.Context, network, address string) (net.Conn, error) {
+	host, port, err := net.SplitHostPort(address)
+	if err != nil {
+		return nil, err
+	}
+	if a.cfg.StatusWebhookAllowPrivateHosts {
+		return (&net.Dialer{Timeout: 5 * time.Second}).DialContext(ctx, network, address)
+	}
+	ips, err := net.DefaultResolver.LookupIP(ctx, "ip", host)
+	if err != nil {
+		return nil, err
+	}
+	for _, ip := range ips {
+		if !isPublicStatusWebhookIP(ip) {
+			return nil, errors.New("private or local status webhook hosts are not allowed")
+		}
+	}
+	dialer := &net.Dialer{Timeout: 5 * time.Second}
+	var lastErr error
+	for _, ip := range ips {
+		conn, err := dialer.DialContext(ctx, network, net.JoinHostPort(ip.String(), port))
+		if err == nil {
+			return conn, nil
+		}
+		lastErr = err
+	}
+	if lastErr == nil {
+		lastErr = errors.New("status webhook host resolved without usable addresses")
+	}
+	return nil, lastErr
+}
+
+func validatePublicWebhookHost(ctx context.Context, host string) error {
+	if strings.EqualFold(host, "localhost") {
+		return errors.New("localhost status webhook hosts are not allowed")
+	}
+	ips, err := net.DefaultResolver.LookupIP(ctx, "ip", host)
+	if err != nil {
+		return fmt.Errorf("failed to resolve status webhook host: %w", err)
+	}
+	for _, ip := range ips {
+		if !isPublicStatusWebhookIP(ip) {
+			return errors.New("private or local status webhook hosts are not allowed")
+		}
+	}
+	return nil
+}
+
+func isPublicStatusWebhookIP(ip net.IP) bool {
+	if ip == nil {
+		return false
+	}
+	return ip.IsGlobalUnicast() && !ip.IsLoopback() && !ip.IsPrivate() && !ip.IsLinkLocalUnicast() && !ip.IsLinkLocalMulticast() && !ip.IsMulticast() && !ip.IsUnspecified()
+}
+
+func truncateWebhookError(value string) string {
+	value = strings.TrimSpace(value)
+	if len(value) > 1000 {
+		return value[:1000]
+	}
+	return value
+}

apps/api/internal/app/submission.go

@@ -241,6 +241,15 @@ func (a *App) submitSMTPMessage(ctx context.Context, user *User, mb *Mailbox, ma
 	if err != nil {
 		return err
 	}
+	if insertedSent {
+		if err := a.rewriteMessageMaildir(ctx, sentID); err != nil {
+			a.deleteMessage(ctx, sentID)
+			if sentFolderID, ferr := a.ensureFolder(ctx, mb.ID, "Sent"); ferr == nil {
+				a.deleteSentDedupeKey(ctx, mb.ID, sentFolderID, msg.MessageID)
+			}
+			return err
+		}
+	}
 	a.recordSendAudit(ctx, sendAuditAccepted, sendQueueStatusQueued, sendAuditInput{UserID: user.ID, MailboxID: mb.ID, SentMessageID: sentID, Source: sendSourceSubmission, MailFrom: mailFrom, HeaderFrom: msg.From, Recipients: recipients})
 	if sentID != "" {
 		if _, err := a.enqueueSend(ctx, sendQueueInput{UserID: user.ID, MailboxID: mb.ID, SentMessageID: sentID, MessageID: msg.MessageID, Source: sendSourceSubmission, MailFrom: mailFrom, HeaderFrom: msg.From, Recipients: recipients, MIMEBytes: prepared, Now: a.now().UTC()}); err != nil {

apps/api/internal/app/system_update_handlers.go

@@ -0,0 +1,282 @@
+package app
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"os"
+	"path/filepath"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+)
+
+var (
+	BuildVersion = "dev"
+	BuildCommit  = ""
+	BuildDate    = ""
+)
+
+type systemVersionInfo struct {
+	CurrentVersion  string     `json:"currentVersion"`
+	CurrentCommit   string     `json:"currentCommit,omitempty"`
+	BuildDate       string     `json:"buildDate,omitempty"`
+	LatestVersion   string     `json:"latestVersion,omitempty"`
+	LatestName      string     `json:"latestName,omitempty"`
+	ReleaseURL      string     `json:"releaseUrl,omitempty"`
+	ReleaseNotes    string     `json:"releaseNotes,omitempty"`
+	PublishedAt     *time.Time `json:"publishedAt,omitempty"`
+	UpdateAvailable bool       `json:"updateAvailable"`
+	UpdateEnabled   bool       `json:"updateEnabled"`
+	CheckError      string     `json:"checkError,omitempty"`
+}
+
+type githubRelease struct {
+	TagName     string    `json:"tag_name"`
+	Name        string    `json:"name"`
+	HTMLURL     string    `json:"html_url"`
+	Body        string    `json:"body"`
+	PublishedAt time.Time `json:"published_at"`
+}
+
+func (a *App) handleSystemVersion(w http.ResponseWriter, r *http.Request) {
+	info, err := a.systemVersion(r.Context())
+	if err != nil {
+		info.CheckError = "暂时无法连接版本服务"
+		a.log.Warn("check system version", "error", err)
+	}
+	respondJSON(w, http.StatusOK, info)
+}
+
+func (a *App) handleSystemUpdate(w http.ResponseWriter, r *http.Request) {
+	user := currentUser(r)
+	if user == nil || user.Role != "admin" {
+		respondError(w, http.StatusForbidden, "system administrator required")
+		return
+	}
+	if !a.updateEnabled() {
+		respondError(w, http.StatusServiceUnavailable, "online update is not configured")
+		return
+	}
+
+	info, err := a.systemVersion(r.Context())
+	if err != nil {
+		respondError(w, http.StatusBadGateway, "failed to check latest release")
+		return
+	}
+	if !info.UpdateAvailable {
+		respondError(w, http.StatusConflict, "already on the latest version")
+		return
+	}
+
+	backupPath, err := a.backupDatabaseBeforeUpdate(r.Context())
+	if err != nil {
+		a.log.Error("backup database before update", "error", err)
+		respondError(w, http.StatusInternalServerError, "failed to back up database")
+		return
+	}
+	if err := a.triggerUpdateService(r.Context()); err != nil {
+		a.log.Error("trigger system update", "error", err)
+		respondError(w, http.StatusBadGateway, "failed to start update")
+		return
+	}
+
+	a.log.Info("system update requested", "user", user.ID, "from", info.CurrentVersion, "to", info.LatestVersion, "backup", backupPath)
+	respondJSON(w, http.StatusAccepted, map[string]any{
+		"ok":             true,
+		"currentVersion": info.CurrentVersion,
+		"targetVersion":  info.LatestVersion,
+		"message":        "更新已启动，服务会在完成后自动恢复",
+	})
+}
+
+func (a *App) systemVersion(ctx context.Context) (systemVersionInfo, error) {
+	current := strings.TrimSpace(a.cfg.AppVersion)
+	if current == "" {
+		current = BuildVersion
+	}
+	info := systemVersionInfo{
+		CurrentVersion: current,
+		CurrentCommit:  strings.TrimSpace(BuildCommit),
+		BuildDate:      strings.TrimSpace(BuildDate),
+		UpdateEnabled:  a.updateEnabled(),
+	}
+
+	release, err := a.fetchLatestRelease(ctx)
+	if err != nil {
+		return info, err
+	}
+	info.LatestVersion = strings.TrimSpace(release.TagName)
+	info.LatestName = strings.TrimSpace(release.Name)
+	info.ReleaseURL = strings.TrimSpace(release.HTMLURL)
+	info.ReleaseNotes = strings.TrimSpace(release.Body)
+	if !release.PublishedAt.IsZero() {
+		info.PublishedAt = &release.PublishedAt
+	}
+	info.UpdateAvailable = versionIsNewer(info.LatestVersion, info.CurrentVersion)
+	return info, nil
+}
+
+func (a *App) fetchLatestRelease(ctx context.Context) (githubRelease, error) {
+	endpoint := strings.TrimSpace(a.cfg.ReleaseAPIURL)
+	parsed, err := url.Parse(endpoint)
+	if err != nil || parsed.Host == "" || (parsed.Scheme != "http" && parsed.Scheme != "https") {
+		return githubRelease{}, errors.New("invalid release API URL")
+	}
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, parsed.String(), nil)
+	if err != nil {
+		return githubRelease{}, err
+	}
+	req.Header.Set("Accept", "application/vnd.github+json")
+	req.Header.Set("User-Agent", "NewSzxcn-Email/"+strings.TrimPrefix(a.cfg.AppVersion, "v"))
+	client := &http.Client{
+		Timeout: 8 * time.Second,
+		CheckRedirect: func(*http.Request, []*http.Request) error {
+			return http.ErrUseLastResponse
+		},
+	}
+	resp, err := client.Do(req)
+	if err != nil {
+		return githubRelease{}, err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != http.StatusOK {
+		_, _ = io.Copy(io.Discard, io.LimitReader(resp.Body, 4096))
+		return githubRelease{}, fmt.Errorf("release API returned %s", resp.Status)
+	}
+	var release githubRelease
+	if err := json.NewDecoder(io.LimitReader(resp.Body, 2<<20)).Decode(&release); err != nil {
+		return githubRelease{}, err
+	}
+	if strings.TrimSpace(release.TagName) == "" {
+		return githubRelease{}, errors.New("release API returned an empty tag")
+	}
+	return release, nil
+}
+
+func (a *App) updateEnabled() bool {
+	return strings.TrimSpace(a.cfg.UpdateServiceURL) != "" && strings.TrimSpace(a.cfg.UpdateServiceToken) != ""
+}
+
+func (a *App) triggerUpdateService(ctx context.Context) error {
+	parsed, err := url.Parse(strings.TrimSpace(a.cfg.UpdateServiceURL))
+	if err != nil || parsed.Host == "" || (parsed.Scheme != "http" && parsed.Scheme != "https") {
+		return errors.New("invalid update service URL")
+	}
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, parsed.String(), nil)
+	if err != nil {
+		return err
+	}
+	req.Header.Set("Authorization", "Bearer "+strings.TrimSpace(a.cfg.UpdateServiceToken))
+	client := &http.Client{
+		Timeout: 30 * time.Second,
+		CheckRedirect: func(*http.Request, []*http.Request) error {
+			return http.ErrUseLastResponse
+		},
+	}
+	resp, err := client.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	_, _ = io.Copy(io.Discard, io.LimitReader(resp.Body, 64<<10))
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		return fmt.Errorf("update service returned %s", resp.Status)
+	}
+	return nil
+}
+
+func (a *App) backupDatabaseBeforeUpdate(ctx context.Context) (string, error) {
+	backupDir := filepath.Join(a.cfg.DataDir, "backups")
+	if err := os.MkdirAll(backupDir, 0o700); err != nil {
+		return "", err
+	}
+	backupPath := filepath.Join(backupDir, "pre-update-"+a.now().UTC().Format("20060102T150405.000000000Z")+".db")
+	quotedPath := strings.ReplaceAll(backupPath, "'", "''")
+	if _, err := a.db.ExecContext(ctx, "VACUUM INTO '"+quotedPath+"'"); err != nil {
+		return "", err
+	}
+	if err := pruneUpdateBackups(backupDir, 5); err != nil {
+		a.log.Warn("prune update backups", "error", err)
+	}
+	return backupPath, nil
+}
+
+func pruneUpdateBackups(dir string, keep int) error {
+	entries, err := os.ReadDir(dir)
+	if err != nil {
+		return err
+	}
+	type backupFile struct {
+		path    string
+		modTime time.Time
+	}
+	backups := make([]backupFile, 0, len(entries))
+	for _, entry := range entries {
+		if entry.IsDir() || !strings.HasPrefix(entry.Name(), "pre-update-") || !strings.HasSuffix(entry.Name(), ".db") {
+			continue
+		}
+		info, err := entry.Info()
+		if err != nil {
+			return err
+		}
+		backups = append(backups, backupFile{path: filepath.Join(dir, entry.Name()), modTime: info.ModTime()})
+	}
+	sort.Slice(backups, func(i, j int) bool { return backups[i].modTime.After(backups[j].modTime) })
+	if keep < 0 {
+		keep = 0
+	}
+	if len(backups) <= keep {
+		return nil
+	}
+	for _, backup := range backups[keep:] {
+		if err := os.Remove(backup.path); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+var versionPattern = regexp.MustCompile(`^[vV]?(\d+)(?:\.(\d+))?(?:\.(\d+))?(?:-([0-9A-Za-z.-]+))?(?:\+[0-9A-Za-z.-]+)?$`)
+
+func versionIsNewer(latest, current string) bool {
+	latestParts, latestPrerelease, latestOK := parseVersion(latest)
+	currentParts, currentPrerelease, currentOK := parseVersion(current)
+	if !latestOK {
+		return false
+	}
+	if !currentOK {
+		return true
+	}
+	for i := 0; i < len(latestParts); i++ {
+		if latestParts[i] != currentParts[i] {
+			return latestParts[i] > currentParts[i]
+		}
+	}
+	return currentPrerelease != "" && latestPrerelease == ""
+}
+
+func parseVersion(value string) ([3]int, string, bool) {
+	match := versionPattern.FindStringSubmatch(strings.TrimSpace(value))
+	if match == nil {
+		return [3]int{}, "", false
+	}
+	var parts [3]int
+	for i := 0; i < 3; i++ {
+		if match[i+1] == "" {
+			continue
+		}
+		part, err := strconv.Atoi(match[i+1])
+		if err != nil {
+			return [3]int{}, "", false
+		}
+		parts[i] = part
+	}
+	return parts, match[4], true
+}

apps/api/internal/app/system_update_handlers_test.go

@@ -0,0 +1,164 @@
+package app
+
+import (
+	"context"
+	"encoding/json"
+	"io"
+	"log/slog"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"strings"
+	"sync/atomic"
+	"testing"
+)
+
+func TestSystemVersionAndUpdate(t *testing.T) {
+	releaseServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		_, _ = io.WriteString(w, `{"tag_name":"v0.2.0","name":"Version 0.2.0","html_url":"https://example.test/releases/v0.2.0","body":"Release notes","published_at":"2026-08-03T00:00:00Z"}`)
+	}))
+	defer releaseServer.Close()
+
+	var updateRequests atomic.Int32
+	updateServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != http.MethodPost {
+			t.Errorf("update method = %s", r.Method)
+		}
+		if got := r.Header.Get("Authorization"); got != "Bearer update-secret" {
+			t.Errorf("authorization = %q", got)
+		}
+		updateRequests.Add(1)
+		w.WriteHeader(http.StatusOK)
+	}))
+	defer updateServer.Close()
+
+	dir := t.TempDir()
+	a := newTestAppWithConfig(t, Config{
+		Addr:               ":0",
+		AppVersion:         "v0.1.0",
+		DBPath:             filepath.Join(dir, "lanqin.db"),
+		DataDir:            dir,
+		CookieName:         "lanqin_test",
+		SessionTTLHours:    24,
+		AdminEmail:         "admin@lanqin.local",
+		AdminPassword:      "ChangeMe123!",
+		PublicHostname:     "mail.example.test",
+		PublicBaseURL:      "http://localhost:5173",
+		AllowInsecureHTTP:  true,
+		ReleaseAPIURL:      releaseServer.URL,
+		UpdateServiceURL:   updateServer.URL,
+		UpdateServiceToken: "update-secret",
+	})
+	ts := httptest.NewServer(a.Router())
+	defer ts.Close()
+	admin := &testClient{t: t, server: ts}
+	if code := admin.do("POST", "/api/auth/login", map[string]string{"email": "admin@lanqin.local", "password": "ChangeMe123!"}, nil); code != http.StatusOK {
+		t.Fatalf("login code=%d", code)
+	}
+
+	var version systemVersionInfo
+	if code := admin.do("GET", "/api/admin/system/version", nil, &version); code != http.StatusOK {
+		t.Fatalf("version code=%d", code)
+	}
+	if version.CurrentVersion != "v0.1.0" || version.LatestVersion != "v0.2.0" || !version.UpdateAvailable || !version.UpdateEnabled {
+		t.Fatalf("unexpected version response: %+v", version)
+	}
+
+	var update map[string]any
+	if code := admin.do("POST", "/api/admin/system/update", nil, &update); code != http.StatusAccepted {
+		t.Fatalf("update code=%d response=%v", code, update)
+	}
+	if updateRequests.Load() != 1 {
+		t.Fatalf("update requests=%d", updateRequests.Load())
+	}
+	backups, err := filepath.Glob(filepath.Join(dir, "backups", "pre-update-*.db"))
+	if err != nil || len(backups) != 1 {
+		t.Fatalf("backups=%v err=%v", backups, err)
+	}
+	if info, err := os.Stat(backups[0]); err != nil || info.Size() == 0 {
+		t.Fatalf("backup stat=%v err=%v", info, err)
+	}
+}
+
+func TestSystemUpdateRequiresSystemAdministrator(t *testing.T) {
+	a := newTestApp(t)
+	req := httptest.NewRequest(http.MethodPost, "/api/admin/system/update", nil)
+	req = req.WithContext(context.WithValue(req.Context(), userContextKey, &User{ID: "operator", Role: "user"}))
+	recorder := httptest.NewRecorder()
+	a.handleSystemUpdate(recorder, req)
+	if recorder.Code != http.StatusForbidden {
+		t.Fatalf("code=%d body=%s", recorder.Code, recorder.Body.String())
+	}
+}
+
+func TestSystemVersionHandlesReleaseFailure(t *testing.T) {
+	dir := t.TempDir()
+	a, err := New(Config{
+		Addr:              ":0",
+		AppVersion:        "v0.1.0",
+		DBPath:            filepath.Join(dir, "lanqin.db"),
+		DataDir:           dir,
+		CookieName:        "lanqin_test",
+		SessionTTLHours:   24,
+		AdminEmail:        "admin@lanqin.local",
+		AdminPassword:     "ChangeMe123!",
+		PublicHostname:    "mail.example.test",
+		PublicBaseURL:     "http://localhost:5173",
+		ReleaseAPIURL:     "http://127.0.0.1:1/releases/latest",
+		AllowInsecureHTTP: true,
+	}, slog.New(slog.NewTextHandler(io.Discard, nil)))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer a.Close()
+	req := httptest.NewRequest(http.MethodGet, "/api/admin/system/version", nil)
+	recorder := httptest.NewRecorder()
+	a.handleSystemVersion(recorder, req)
+	if recorder.Code != http.StatusOK {
+		t.Fatalf("code=%d", recorder.Code)
+	}
+	var info systemVersionInfo
+	if err := json.Unmarshal(recorder.Body.Bytes(), &info); err != nil {
+		t.Fatal(err)
+	}
+	if !strings.Contains(info.CheckError, "版本服务") || info.CurrentVersion != "v0.1.0" {
+		t.Fatalf("unexpected response: %+v", info)
+	}
+}
+
+func TestVersionIsNewer(t *testing.T) {
+	tests := []struct {
+		latest  string
+		current string
+		want    bool
+	}{
+		{"v0.2.0", "v0.1.9", true},
+		{"v1.0.0", "v0.99.99", true},
+		{"v1.0.0", "v1.0.0", false},
+		{"v1.0.0-beta.1", "v1.0.0", false},
+		{"v1.0.0", "v1.0.0-beta.1", true},
+		{"v1.0.0+build.2", "v1.0.0+build.1", false},
+		{"v1.0.0", "dev", true},
+	}
+	for _, tt := range tests {
+		if got := versionIsNewer(tt.latest, tt.current); got != tt.want {
+			t.Errorf("versionIsNewer(%q, %q)=%v want %v", tt.latest, tt.current, got, tt.want)
+		}
+	}
+}
+
+func TestPruneUpdateBackupsWithFewerFilesThanLimit(t *testing.T) {
+	dir := t.TempDir()
+	path := filepath.Join(dir, "pre-update-one.db")
+	if err := os.WriteFile(path, []byte("backup"), 0o600); err != nil {
+		t.Fatal(err)
+	}
+	if err := pruneUpdateBackups(dir, 5); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := os.Stat(path); err != nil {
+		t.Fatalf("backup should be retained: %v", err)
+	}
+}

apps/api/internal/app/template_handlers.go

@@ -43,7 +43,7 @@ func defaultMailTemplates() []MailTemplate {
 		{
 			Key:       "welcome",
 			Name:      "欢迎邮件",
-			Subject:   "欢迎使用 LanQin Email",
+			Subject:   "欢迎使用 NewSzxcn 邮箱",
 			BodyText:  "你的自建邮箱 Webmail 已经初始化完成。\n\n请尽快修改默认管理员密码，并配置 MX/SPF/DKIM/DMARC。",
 			BodyHTML:  "<p>你的自建邮箱 Webmail 已经初始化完成。</p><p>请尽快修改默认管理员密码，并配置 MX/SPF/DKIM/DMARC。</p>",
 			UpdatedAt: now,
@@ -51,7 +51,7 @@ func defaultMailTemplates() []MailTemplate {
 		{
 			Key:       smtpTestTemplateKey,
 			Name:      "SMTP 测试",
-			Subject:   "LanQin Email SMTP 测试",
+			Subject:   "NewSzxcn 邮箱 SMTP 测试",
 			BodyText:  "这是一封 SMTP 测试邮件。\n\n发件人：{{from}}\n收件人：{{to}}\n时间：{{time}}\n主机：{{publicHostname}}",
 			BodyHTML:  "<p>这是一封 SMTP 测试邮件。</p><p>发件人：{{from}}<br>收件人：{{to}}<br>时间：{{time}}<br>主机：{{publicHostname}}</p>",
 			UpdatedAt: now,

apps/api/internal/app/two_factor.go

@@ -122,11 +122,12 @@ func (a *App) deleteLoginChallenge(ctx context.Context, id string) {
 }
 
 func (a *App) loadUserAuthByID(ctx context.Context, id string) (*User, string, error) {
-	row := a.db.QueryRowContext(ctx, `SELECT id,email,display_name,role,disabled,two_factor_enabled,two_factor_secret,created_at FROM users WHERE id=?`, id)
+	row := a.db.QueryRowContext(ctx, `SELECT id,login_name,email,display_name,role,disabled,two_factor_enabled,two_factor_secret,mailbox_limit_override,created_at FROM users WHERE id=?`, id)
 	var u User
 	var disabled, twoFactorEnabled int
+	var mailboxLimitOverride sql.NullInt64
 	var secret, created string
-	if err := row.Scan(&u.ID, &u.Email, &u.DisplayName, &u.Role, &disabled, &twoFactorEnabled, &secret, &created); err != nil {
+	if err := row.Scan(&u.ID, &u.LoginName, &u.Email, &u.DisplayName, &u.Role, &disabled, &twoFactorEnabled, &secret, &mailboxLimitOverride, &created); err != nil {
 		if errors.Is(err, sql.ErrNoRows) {
 			return nil, "", errNotFound
 		}
@@ -134,6 +135,7 @@ func (a *App) loadUserAuthByID(ctx context.Context, id string) (*User, string, e
 	}
 	u.Disabled = intBool(disabled)
 	u.TwoFactorEnabled = intBool(twoFactorEnabled)
+	u.MailboxLimitOverride = intPtrFromNull(mailboxLimitOverride)
 	u.CreatedAt = parseTime(created)
 	if err := a.attachUserAuthorization(ctx, &u); err != nil {
 		return nil, "", err
@@ -172,7 +174,7 @@ func (a *App) handleTwoFactorSetup(w http.ResponseWriter, r *http.Request) {
 	}
 	respondJSON(w, http.StatusOK, map[string]any{
 		"secret":     secret,
-		"otpauthUrl": totpProvisioningURI("LanQin Email", current.Email, secret),
+		"otpauthUrl": totpProvisioningURI("NewSzxcn 邮箱", current.Email, secret),
 	})
 }
 

apps/api/internal/app/types.go

@@ -3,18 +3,20 @@ package app
 import "time"
 
 type User struct {
-	ID                 string                   `json:"id"`
-	Email              string                   `json:"email"`
-	DisplayName        string                   `json:"displayName"`
-	Role               string                   `json:"role"`
-	Disabled           bool                     `json:"disabled"`
-	Protected          bool                     `json:"protected"`
-	TwoFactorEnabled   bool                     `json:"twoFactorEnabled"`
-	Permissions        []string                 `json:"permissions"`
-	Limits             PermissionLimits         `json:"limits"`
-	PermissionGroupIDs []string                 `json:"permissionGroupIds"`
-	PermissionGroups   []PermissionGroupSummary `json:"permissionGroups"`
-	CreatedAt          time.Time                `json:"createdAt"`
+	ID                   string                   `json:"id"`
+	LoginName            string                   `json:"loginName"`
+	Email                string                   `json:"email"`
+	DisplayName          string                   `json:"displayName"`
+	Role                 string                   `json:"role"`
+	Disabled             bool                     `json:"disabled"`
+	Protected            bool                     `json:"protected"`
+	TwoFactorEnabled     bool                     `json:"twoFactorEnabled"`
+	MailboxLimitOverride *int                     `json:"mailboxLimitOverride,omitempty"`
+	Permissions          []string                 `json:"permissions"`
+	Limits               PermissionLimits         `json:"limits"`
+	PermissionGroupIDs   []string                 `json:"permissionGroupIds"`
+	PermissionGroups     []PermissionGroupSummary `json:"permissionGroups"`
+	CreatedAt            time.Time                `json:"createdAt"`
 }
 
 type AdminUser struct {
@@ -23,6 +25,31 @@ type AdminUser struct {
 	Mailboxes    []string `json:"mailboxes"`
 }
 
+type APIToken struct {
+	ID         string     `json:"id"`
+	Name       string     `json:"name"`
+	LastUsedAt *time.Time `json:"lastUsedAt,omitempty"`
+	ExpiresAt  *time.Time `json:"expiresAt,omitempty"`
+	Disabled   bool       `json:"disabled"`
+	Scopes     []string   `json:"scopes"`
+	CreatedAt  time.Time  `json:"createdAt"`
+	UpdatedAt  time.Time  `json:"updatedAt"`
+}
+
+type DeliveryEvent struct {
+	ID           string    `json:"id"`
+	ExternalID   string    `json:"externalId"`
+	Provider     string    `json:"provider"`
+	QueueID      string    `json:"queueId"`
+	MessageID    string    `json:"messageId"`
+	RFCMessageID string    `json:"rfcMessageId"`
+	Recipient    string    `json:"recipient"`
+	Status       string    `json:"status"`
+	Reason       string    `json:"reason,omitempty"`
+	OccurredAt   time.Time `json:"occurredAt"`
+	CreatedAt    time.Time `json:"createdAt"`
+}
+
 type Domain struct {
 	ID            string     `json:"id"`
 	Name          string     `json:"name"`
@@ -44,6 +71,7 @@ type Mailbox struct {
 	DisplayName string    `json:"displayName"`
 	QuotaMB     int       `json:"quotaMb"`
 	Status      string    `json:"status"`
+	UnreadCount int       `json:"unreadCount"`
 	CreatedAt   time.Time `json:"createdAt"`
 }
 
@@ -57,11 +85,15 @@ type Alias struct {
 }
 
 type MailFolder struct {
-	ID          string `json:"id"`
-	Name        string `json:"name"`
-	Role        string `json:"role"`
-	UnreadCount int    `json:"unreadCount"`
-	TotalCount  int    `json:"totalCount"`
+	ID            string `json:"id"`
+	Name          string `json:"name"`
+	Role          string `json:"role"`
+	SortOrder     int    `json:"sortOrder"`
+	UnreadCount   int    `json:"unreadCount"`
+	TotalCount    int    `json:"totalCount"`
+	UIDValidity   int64  `json:"uidValidity"`
+	UIDNext       int64  `json:"uidNext"`
+	HighestModSeq int64  `json:"highestModseq"`
 }
 
 type MailLabel struct {
@@ -73,32 +105,46 @@ type MailLabel struct {
 }
 
 type MailMessage struct {
-	ID             string       `json:"id"`
-	MailboxID      string       `json:"mailboxId,omitempty"`
-	MailboxAddress string       `json:"mailboxAddress,omitempty"`
-	OwnerEmail     string       `json:"ownerEmail,omitempty"`
-	RecipientAddr  string       `json:"recipientAddress,omitempty"`
-	FolderID       string       `json:"folderId"`
-	Folder         string       `json:"folder"`
-	MessageUID     string       `json:"messageUid"`
-	MessageID      string       `json:"messageId"`
-	Subject        string       `json:"subject"`
-	From           string       `json:"from"`
-	FromName       string       `json:"fromName,omitempty"`
-	To             []string     `json:"to"`
-	CC             []string     `json:"cc"`
-	BCC            []string     `json:"bcc,omitempty"`
-	SentAt         time.Time    `json:"sentAt"`
-	ReceivedAt     time.Time    `json:"receivedAt"`
-	Snippet        string       `json:"snippet"`
-	BodyText       string       `json:"bodyText,omitempty"`
-	BodyHTML       string       `json:"bodyHtml,omitempty"`
-	IsRead         bool         `json:"isRead"`
-	IsStarred      bool         `json:"isStarred"`
-	HasAttachments bool         `json:"hasAttachments"`
-	SizeBytes      int64        `json:"sizeBytes"`
-	Labels         []MailLabel  `json:"labels,omitempty"`
-	Attachments    []Attachment `json:"attachments,omitempty"`
+	ID                string             `json:"id"`
+	MailboxID         string             `json:"mailboxId,omitempty"`
+	MailboxAddress    string             `json:"mailboxAddress,omitempty"`
+	OwnerEmail        string             `json:"ownerEmail,omitempty"`
+	RecipientAddr     string             `json:"recipientAddress,omitempty"`
+	FolderID          string             `json:"folderId"`
+	Folder            string             `json:"folder"`
+	MessageUID        string             `json:"messageUid"`
+	IMAPUID           int64              `json:"imapUid"`
+	IMAPModSeq        int64              `json:"imapModseq"`
+	MessageID         string             `json:"messageId"`
+	Subject           string             `json:"subject"`
+	From              string             `json:"from"`
+	FromName          string             `json:"fromName,omitempty"`
+	To                []string           `json:"to"`
+	CC                []string           `json:"cc"`
+	BCC               []string           `json:"bcc,omitempty"`
+	SentAt            time.Time          `json:"sentAt"`
+	ReceivedAt        time.Time          `json:"receivedAt"`
+	Snippet           string             `json:"snippet"`
+	BodyText          string             `json:"bodyText,omitempty"`
+	BodyHTML          string             `json:"bodyHtml,omitempty"`
+	IsRead            bool               `json:"isRead"`
+	IsStarred         bool               `json:"isStarred"`
+	HasAttachments    bool               `json:"hasAttachments"`
+	SizeBytes         int64              `json:"sizeBytes"`
+	Labels            []MailLabel        `json:"labels,omitempty"`
+	Attachments       []Attachment       `json:"attachments,omitempty"`
+	Authentication    MailAuthentication `json:"authentication"`
+	SendQueueID       string             `json:"sendQueueId,omitempty"`
+	SendQueueStatus   string             `json:"sendQueueStatus,omitempty"`
+	ExternalAccountID string             `json:"externalAccountId,omitempty"`
+}
+
+type MailAuthentication struct {
+	AuthenticationResults string `json:"authenticationResults"`
+	ReceivedSPF           string `json:"receivedSpf"`
+	SPF                   string `json:"spf"`
+	DKIM                  string `json:"dkim"`
+	DMARC                 string `json:"dmarc"`
 }
 
 type Attachment struct {
@@ -168,9 +214,11 @@ type MailRule struct {
 }
 
 type MailRuleCondition struct {
-	Field    string `json:"field"`
-	Operator string `json:"operator"`
-	Value    string `json:"value"`
+	Field      string              `json:"field,omitempty"`
+	Operator   string              `json:"operator,omitempty"`
+	Value      string              `json:"value,omitempty"`
+	MatchMode  string              `json:"matchMode,omitempty"`
+	Conditions []MailRuleCondition `json:"conditions,omitempty"`
 }
 
 type MailRuleAction struct {
@@ -189,12 +237,24 @@ type BlockedSender struct {
 }
 
 type MailStats struct {
-	TotalMessages   int64                  `json:"totalMessages"`
-	UnreadMessages  int64                  `json:"unreadMessages"`
-	StarredMessages int64                  `json:"starredMessages"`
-	AttachmentCount int64                  `json:"attachmentCount"`
-	StorageBytes    int64                  `json:"storageBytes"`
-	ByFolder        []MailStatsFolderCount `json:"byFolder"`
+	TotalMessages       int64                       `json:"totalMessages"`
+	TotalIncoming       int64                       `json:"totalIncoming"`
+	TotalOutgoing       int64                       `json:"totalOutgoing"`
+	UnreadMessages      int64                       `json:"unreadMessages"`
+	TodayOutgoing       int64                       `json:"todayOutgoing"`
+	DraftMessages       int64                       `json:"draftMessages"`
+	FailedSends         int64                       `json:"failedSends"`
+	StarredMessages     int64                       `json:"starredMessages"`
+	AttachmentCount     int64                       `json:"attachmentCount"`
+	AttachmentBytes     int64                       `json:"attachmentBytes"`
+	StorageBytes        int64                       `json:"storageBytes"`
+	QuotaBytes          int64                       `json:"quotaBytes"`
+	QuotaUsedPct        float64                     `json:"quotaUsedPct"`
+	AverageMessageBytes int64                       `json:"averageMessageBytes"`
+	ByFolder            []MailStatsFolderCount      `json:"byFolder"`
+	Trend               []MailStatsTrendPoint       `json:"trend"`
+	Distribution        []MailStatsDistributionItem `json:"distribution"`
+	TopContacts         []MailStatsContact          `json:"topContacts"`
 }
 
 type MailStatsFolderCount struct {
@@ -204,3 +264,100 @@ type MailStatsFolderCount struct {
 	Unread int64  `json:"unread"`
 	Bytes  int64  `json:"bytes"`
 }
+
+type MailStatsTrendPoint struct {
+	Date     string `json:"date"`
+	Incoming int64  `json:"incoming"`
+	Outgoing int64  `json:"outgoing"`
+}
+
+type MailStatsDistributionItem struct {
+	Key   string `json:"key"`
+	Label string `json:"label"`
+	Count int64  `json:"count"`
+}
+
+type MailStatsContact struct {
+	Email string `json:"email"`
+	Count int64  `json:"count"`
+}
+
+type ExternalIMAPAccount struct {
+	ID              string     `json:"id"`
+	UserID          string     `json:"userId,omitempty"`
+	MailboxID       string     `json:"mailboxId"`
+	Name            string     `json:"name"`
+	Host            string     `json:"host"`
+	Port            int        `json:"port"`
+	TLSMode         string     `json:"tlsMode"`
+	Username        string     `json:"username"`
+	AuthMode        string     `json:"authMode"`
+	OAuthProvider   string     `json:"oauthProvider,omitempty"`
+	OAuthEmail      string     `json:"oauthEmail,omitempty"`
+	OAuthConfigured bool       `json:"oauthConfigured,omitempty"`
+	StorageMode     string     `json:"storageMode"`
+	SyncReadState   bool       `json:"syncReadState"`
+	Enabled         bool       `json:"enabled"`
+	LastSyncAt      *time.Time `json:"lastSyncAt,omitempty"`
+	LastStatus      string     `json:"lastStatus"`
+	LastError       string     `json:"lastError,omitempty"`
+	CreatedAt       time.Time  `json:"createdAt"`
+	UpdatedAt       time.Time  `json:"updatedAt"`
+}
+
+type ExternalIMAPFolder struct {
+	Name        string `json:"name"`
+	Role        string `json:"role"`
+	UnreadCount int    `json:"unreadCount"`
+	TotalCount  int    `json:"totalCount"`
+}
+
+type ExternalIMAPSyncRun struct {
+	ID         string     `json:"id"`
+	AccountID  string     `json:"accountId"`
+	Folder     string     `json:"folder,omitempty"`
+	Status     string     `json:"status"`
+	Imported   int        `json:"imported"`
+	Skipped    int        `json:"skipped"`
+	Failed     int        `json:"failed"`
+	Error      string     `json:"error,omitempty"`
+	StartedAt  time.Time  `json:"startedAt"`
+	FinishedAt *time.Time `json:"finishedAt,omitempty"`
+}
+
+type SendQueueEntry struct {
+	ID            string     `json:"id"`
+	MailboxID     string     `json:"mailboxId"`
+	SentMessageID string     `json:"sentMessageId"`
+	MessageID     string     `json:"messageId"`
+	Subject       string     `json:"subject"`
+	Source        string     `json:"source"`
+	MailFrom      string     `json:"mailFrom"`
+	HeaderFrom    string     `json:"headerFrom"`
+	Recipients    []string   `json:"recipients"`
+	Status        string     `json:"status"`
+	AttemptCount  int        `json:"attemptCount"`
+	MaxAttempts   int        `json:"maxAttempts"`
+	NextAttemptAt time.Time  `json:"nextAttemptAt"`
+	LastError     string     `json:"lastError"`
+	CreatedAt     time.Time  `json:"createdAt"`
+	UpdatedAt     time.Time  `json:"updatedAt"`
+	DeliveredAt   *time.Time `json:"deliveredAt,omitempty"`
+}
+
+type SendAuditEvent struct {
+	ID             string    `json:"id"`
+	QueueID        string    `json:"queueId"`
+	MailboxID      string    `json:"mailboxId"`
+	MailboxAddress string    `json:"mailboxAddress,omitempty"`
+	SentMessageID  string    `json:"sentMessageId"`
+	MessageID      string    `json:"messageId,omitempty"`
+	Source         string    `json:"source"`
+	Event          string    `json:"event"`
+	Status         string    `json:"status"`
+	MailFrom       string    `json:"mailFrom"`
+	HeaderFrom     string    `json:"headerFrom"`
+	Recipients     []string  `json:"recipients"`
+	Error          string    `json:"error,omitempty"`
+	CreatedAt      time.Time `json:"createdAt"`
+}

apps/api/internal/app/util.go

@@ -53,6 +53,7 @@ func (p *HTMLPolicy) Sanitize(s string) string {
 }
 
 var emailStyleTagRe = regexp.MustCompile(`(?is)<style\b([^>]*)>(.*?)</style>`)
+var htmlNonContentTagRe = regexp.MustCompile(`(?is)<(style|script|head|title|noscript)\b[^>]*>.*?</\s*(style|script|head|title|noscript)\s*>`)
 
 func extractSafeEmailStyles(value string) ([]string, string) {
 	styles := []string{}
@@ -148,6 +149,55 @@ func normalizeEmail(s string) string {
 	return normalizeLocalPart(parts[0]) + "@" + normalizeDomain(parts[1])
 }
 
+func normalizeLoginName(s string) string {
+	s = strings.ToLower(strings.TrimSpace(s))
+	if s == "" {
+		return ""
+	}
+	if strings.Contains(s, "@") {
+		return normalizeEmail(s)
+	}
+	return normalizeLocalPart(s)
+}
+
+func cleanLoginName(value string, fallbacks ...string) (string, error) {
+	loginName := normalizeLoginName(value)
+	for _, fallback := range fallbacks {
+		if loginName != "" {
+			break
+		}
+		loginName = normalizeLoginName(fallback)
+	}
+	if loginName == "" {
+		return "", errors.New("登录名不能为空")
+	}
+	if len([]rune(loginName)) > 80 {
+		return "", errors.New("登录名不能超过 80 个字符")
+	}
+	if strings.Contains(loginName, "@") {
+		parts := strings.SplitN(loginName, "@", 2)
+		if len(parts) != 2 || parts[0] == "" || parts[1] == "" {
+			return "", errors.New("登录名格式无效")
+		}
+		return loginName, nil
+	}
+	if len([]rune(loginName)) < 2 {
+		return "", errors.New("登录名至少需要 2 个字符")
+	}
+	return loginName, nil
+}
+
+func cleanUsername(value string) (string, error) {
+	username, err := cleanLoginName(value)
+	if err != nil {
+		return "", err
+	}
+	if strings.Contains(username, "@") {
+		return "", errors.New("登录名不能使用邮箱地址")
+	}
+	return username, nil
+}
+
 func dedupeEmails(items []string) []string {
 	seen := map[string]bool{}
 	out := make([]string, 0, len(items))
@@ -214,6 +264,21 @@ func nullableString(v string) any {
 	return v
 }
 
+func nullableInt(v *int) any {
+	if v == nil {
+		return nil
+	}
+	return *v
+}
+
+func intPtrFromNull(v sql.NullInt64) *int {
+	if !v.Valid {
+		return nil
+	}
+	value := int(v.Int64)
+	return &value
+}
+
 func parseTime(v string) time.Time {
 	t, _ := time.Parse(time.RFC3339Nano, v)
 	return t
@@ -241,6 +306,7 @@ func snippetFrom(text, html string) string {
 }
 
 func stripTags(s string) string {
+	s = htmlNonContentTagRe.ReplaceAllString(s, " ")
 	var b strings.Builder
 	inTag := false
 	for _, r := range s {

apps/web/index.html

@@ -3,7 +3,9 @@
   <head>
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>LanQin Email</title>
+    <meta name="theme-color" content="#0f172a" />
+    <link rel="icon" type="image/svg+xml" href="/favicon.svg" />
+    <title>NewSzxcn 邮箱</title>
   </head>
   <body>
     <div id="root"></div>

apps/web/package.json

@@ -1,5 +1,5 @@
 {
-  "name": "lanqin-email-web",
+  "name": "newszxcn-email-web",
   "version": "0.1.0",
   "private": true,
   "type": "module",

apps/web/public/favicon.svg

@@ -0,0 +1,6 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64">
+  <rect width="64" height="64" rx="14" fill="#0f172a"/>
+  <path d="M14 22.5A6.5 6.5 0 0 1 20.5 16h23A6.5 6.5 0 0 1 50 22.5v19A6.5 6.5 0 0 1 43.5 48h-23A6.5 6.5 0 0 1 14 41.5v-19Z" fill="#f8fafc"/>
+  <path d="M18 23.5 32 34l14-10.5" fill="none" stroke="#0f172a" stroke-width="4" stroke-linecap="round" stroke-linejoin="round"/>
+  <path d="M24 42V24h4.8l10.4 11.3V24H44v18h-4.8L28.8 30.7V42H24Z" fill="#2563eb"/>
+</svg>

apps/web/src/components/protected-layout.tsx

@@ -1,12 +1,13 @@
 import * as React from "react"
 import { Outlet, Link, useLocation } from "react-router-dom"
-import { BarChart3, Copy, Globe2, Inbox, LogOut, Mail, Mailbox, Settings, ShieldCheck, Users } from "lucide-react"
+import { BarChart3, ClipboardList, Forward, Globe2, Inbox, LogOut, Mail, Mailbox, Settings, ShieldCheck, UserCog } from "lucide-react"
 import { useMe } from "@/hooks/use-me"
 import { useLogout } from "@/hooks/use-logout"
 import { AuthGuard } from "@/components/auth-guard"
 import { Button } from "@/components/ui/button"
 import { Badge } from "@/components/ui/badge"
 import { Avatar, AvatarFallback } from "@/components/ui/avatar"
+import { SystemVersionDialog } from "@/components/system-version-dialog"
 import { hasAnyPermission } from "@/lib/permissions"
 import type { PermissionKey } from "@/lib/api-types"
 import {
@@ -27,13 +28,14 @@ import {
 } from "@/components/ui/sidebar"
 
 const adminSections: { key: string; label: string; icon: React.ReactNode; permissions: PermissionKey[] }[] = [
-  { key: "overview", label: "概览", icon: <BarChart3 />, permissions: ["admin.overview.view"] },
-  { key: "users", label: "用户", icon: <Users />, permissions: ["admin.users.view"] },
-  { key: "permissionGroups", label: "权限组", icon: <ShieldCheck />, permissions: ["admin.permission_groups.view"] },
-  { key: "domains", label: "域名", icon: <Globe2 />, permissions: ["admin.domains.view", "admin.dns.view"] },
-  { key: "mailboxes", label: "邮箱账号", icon: <Mailbox />, permissions: ["admin.mailboxes.view"] },
-  { key: "aliases", label: "别名转发", icon: <Copy />, permissions: ["admin.aliases.view"] },
+  { key: "overview", label: "数据总览", icon: <BarChart3 />, permissions: ["admin.overview.view"] },
+  { key: "users", label: "账号管理", icon: <UserCog />, permissions: ["admin.users.view"] },
+  { key: "permissionGroups", label: "权限配额", icon: <ShieldCheck />, permissions: ["admin.permission_groups.view"] },
+  { key: "domains", label: "域名管理", icon: <Globe2 />, permissions: ["admin.domains.view", "admin.dns.view"] },
+  { key: "mailboxes", label: "邮箱管理", icon: <Mailbox />, permissions: ["admin.mailboxes.view"] },
+  { key: "aliases", label: "邮件转发", icon: <Forward />, permissions: ["admin.aliases.view"] },
   { key: "messages", label: "全部邮件", icon: <Inbox />, permissions: ["admin.messages.view"] },
+  { key: "sendAudit", label: "发送队列", icon: <ClipboardList />, permissions: ["admin.messages.view"] },
   { key: "settings", label: "系统设置", icon: <Settings />, permissions: ["admin.settings.view", "admin.templates.view"] },
 ]
 
@@ -64,21 +66,24 @@ function ProtectedContent() {
   return (
     <SidebarProvider>
       <Sidebar collapsible="icon">
-        <SidebarHeader>
-          <SidebarMenu>
-                <SidebarMenuItem>
-                  <SidebarMenuButton size="lg" asChild>
-                <Link to="/">
-                  <div className="flex aspect-square size-8 items-center justify-center rounded-lg bg-primary text-primary-foreground">
-                    <Mail className="size-4" />
-                  </div>
-                  <div className="grid flex-1 text-left text-sm leading-tight">
-                    <span className="truncate font-semibold">LanQin Email</span>
-                  </div>
-                </Link>
-              </SidebarMenuButton>
-            </SidebarMenuItem>
-          </SidebarMenu>
+        <SidebarHeader className="border-b">
+          <div className="space-y-1 group-data-[collapsible=icon]:space-y-0">
+            <SidebarMenu>
+              <SidebarMenuItem>
+                <SidebarMenuButton size="lg" asChild>
+                  <Link to="/">
+                    <div className="flex aspect-square size-8 items-center justify-center rounded-lg bg-primary text-primary-foreground">
+                      <Mail className="size-4" />
+                    </div>
+                    <div className="grid flex-1 text-left text-sm leading-tight">
+                      <span className="truncate font-semibold">NewSzxcn 邮箱</span>
+                    </div>
+                  </Link>
+                </SidebarMenuButton>
+              </SidebarMenuItem>
+            </SidebarMenu>
+            {isAdminRoute && <SystemVersionDialog className="ml-10" />}
+          </div>
         </SidebarHeader>
         <SidebarContent>
           {isAdminRoute && visibleAdminSections.length > 0 && (
@@ -103,10 +108,10 @@ function ProtectedContent() {
                   </Avatar>
                   <div className="grid flex-1 text-left text-sm leading-tight">
                     <span className="truncate font-semibold">{user.displayName}</span>
-                    <span className="truncate text-xs text-muted-foreground">{user.email}</span>
+                    <span className="truncate text-xs text-muted-foreground">{user.loginName || user.email}</span>
                   </div>
                   <Badge variant={user.role === "admin" ? "default" : "secondary"} className="ml-auto text-[10px]">
-                    {user.role === "admin" ? "超级管理员" : "普通用户"}
+                    {user.role === "admin" ? "管理员" : "普通用户"}
                   </Badge>
                 </Link>
               </SidebarMenuButton>
@@ -125,7 +130,7 @@ function ProtectedContent() {
           <div className="flex h-12 items-center gap-3 border-b bg-background px-3 md:hidden">
             <SidebarTrigger aria-label="打开导航" />
             <div className="min-w-0 flex-1 truncate text-sm font-semibold">
-              {isAdminRoute ? visibleAdminSections.find((item) => item.key === adminSection)?.label || "系统管理" : "LanQin Email"}
+              {isAdminRoute ? visibleAdminSections.find((item) => item.key === adminSection)?.label || "系统管理" : "NewSzxcn 邮箱"}
             </div>
           </div>
           <Outlet />

apps/web/src/components/system-version-dialog.tsx

@@ -0,0 +1,178 @@
+import * as React from "react"
+import { useMutation, useQuery } from "@tanstack/react-query"
+import { CheckCircle2, Download, ExternalLink, Loader2, RefreshCcw, TriangleAlert } from "lucide-react"
+import { api } from "@/lib/api"
+import { cn, formatDate } from "@/lib/utils"
+import { useMe } from "@/hooks/use-me"
+import { useToast } from "@/hooks/use-toast"
+import { Badge } from "@/components/ui/badge"
+import { Button } from "@/components/ui/button"
+import { Dialog, DialogContent, DialogFooter, DialogHeader, DialogTitle, DialogTrigger } from "@/components/ui/dialog"
+
+const frontendVersion = import.meta.env.VITE_APP_VERSION || "dev"
+
+export function SystemVersionDialog({ mode = "sidebar", className }: { mode?: "sidebar" | "inline"; className?: string }) {
+  const me = useMe()
+  const { toast } = useToast()
+  const [open, setOpen] = React.useState(false)
+  const [updatePhase, setUpdatePhase] = React.useState<"idle" | "starting" | "restarting">("idle")
+  const version = useQuery({
+    queryKey: ["admin", "system-version"],
+    queryFn: api.systemVersion,
+    staleTime: 5 * 60_000,
+    retry: 1,
+  })
+  const currentVersion = version.data?.currentVersion || frontendVersion
+  const isSystemAdmin = me.data?.user.role === "admin"
+  const update = useMutation({
+    mutationFn: async () => {
+      setUpdatePhase("starting")
+      const result = await api.updateSystem()
+      setUpdatePhase("restarting")
+      await waitForUpdatedService(result.targetVersion)
+      return result
+    },
+    onError: (error) => {
+      setUpdatePhase("idle")
+      toast({ title: "更新失败", description: error.message })
+    },
+  })
+
+  const trigger = mode === "inline" ? (
+    <Button type="button" variant="outline" className={cn("h-11 justify-start gap-2 px-4 text-base font-normal", className)}>
+      <RefreshCcw className="h-5 w-5 text-primary" />
+      {currentVersion}
+      {version.data?.updateAvailable && <Badge className="ml-1">可更新</Badge>}
+    </Button>
+  ) : (
+    <Button
+      type="button"
+      variant={version.data?.updateAvailable ? "secondary" : "ghost"}
+      className={cn("h-8 w-fit max-w-full justify-start gap-2 rounded-md px-2 text-xs font-medium group-data-[collapsible=icon]:hidden", className)}
+      aria-label={`系统版本 ${currentVersion}`}
+    >
+      <span className="truncate">{currentVersion}</span>
+      <span className={cn("h-2 w-2 shrink-0 rounded-full", version.data?.updateAvailable ? "bg-amber-500" : "bg-emerald-500")} aria-hidden="true" />
+    </Button>
+  )
+
+  return (
+    <Dialog open={open} onOpenChange={setOpen}>
+      <DialogTrigger asChild>{trigger}</DialogTrigger>
+      <DialogContent className="max-h-[88svh] overflow-y-auto sm:max-w-lg">
+        <DialogHeader>
+          <div className="flex items-center justify-between gap-3 pr-7">
+            <DialogTitle>系统版本</DialogTitle>
+            <Button type="button" variant="ghost" size="icon" className="h-8 w-8" onClick={() => version.refetch()} disabled={version.isFetching || update.isPending} aria-label="重新检查更新" title="重新检查更新">
+              <RefreshCcw className={cn("h-4 w-4", version.isFetching && "animate-spin")} />
+            </Button>
+          </div>
+        </DialogHeader>
+
+        <div className="space-y-4">
+          <div className="border-b pb-4 text-center">
+            <div className="text-sm text-muted-foreground">当前版本</div>
+            <div className="mt-2 text-4xl font-semibold tabular-nums">{currentVersion}</div>
+            {version.data?.latestVersion && <div className="mt-2 text-sm text-muted-foreground">最新版本：{version.data.latestVersion}</div>}
+          </div>
+
+          {version.isLoading && <VersionState icon={<Loader2 className="animate-spin" />} title="正在检查更新" description="正在连接 GitHub Release。" />}
+          {version.data?.checkError && <VersionState icon={<TriangleAlert />} title="暂时无法检查更新" description={version.data.checkError} tone="warning" />}
+          {version.data && !version.data.checkError && !version.data.updateAvailable && <VersionState icon={<CheckCircle2 />} title="已是最新版本" description="当前无需更新。" tone="success" />}
+          {version.data?.updateAvailable && (
+            <VersionState
+              icon={<Download />}
+              title="发现新版本"
+              description={`${version.data.latestVersion} 已发布${version.data.publishedAt ? ` · ${formatDate(version.data.publishedAt)}` : ""}`}
+              tone="warning"
+            />
+          )}
+
+          {version.data?.releaseNotes && (
+            <div className="space-y-2">
+              <div className="text-sm font-medium">更新日志</div>
+              <div className="max-h-40 overflow-y-auto whitespace-pre-wrap rounded-md border bg-muted/30 p-3 text-sm leading-6 text-muted-foreground">
+                {version.data.releaseNotes}
+              </div>
+            </div>
+          )}
+
+          {update.isPending && (
+            <div className="rounded-md border bg-muted/30 p-4">
+              <div className="flex items-center gap-3 font-medium">
+                <Loader2 className="h-5 w-5 animate-spin" />
+                {updatePhase === "starting" ? "正在准备更新" : "正在重启服务"}
+              </div>
+              <div className="mt-2 text-sm text-muted-foreground">请保持页面打开，服务恢复后会自动刷新。</div>
+            </div>
+          )}
+
+          {version.data?.updateAvailable && !version.data.updateEnabled && (
+            <div className="rounded-md border p-3 text-sm text-muted-foreground">
+              当前部署未启用页面更新，请在服务器执行 <code className="rounded bg-muted px-1.5 py-0.5 text-foreground">sudo newszxcn-email update</code>。
+            </div>
+          )}
+        </div>
+
+        <DialogFooter className="gap-2 sm:justify-between">
+          <div>
+            {version.data?.releaseUrl && (
+              <Button type="button" variant="ghost" asChild>
+                <a href={version.data.releaseUrl} target="_blank" rel="noreferrer">
+                  更新详情<ExternalLink className="h-4 w-4" />
+                </a>
+              </Button>
+            )}
+          </div>
+          {version.data?.updateAvailable && version.data.updateEnabled && (
+            <Button type="button" disabled={!isSystemAdmin || update.isPending} onClick={() => update.mutate()}>
+              {update.isPending ? <Loader2 className="h-4 w-4 animate-spin" /> : <Download className="h-4 w-4" />}
+              {isSystemAdmin ? "立即更新" : "仅超级管理员可更新"}
+            </Button>
+          )}
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  )
+}
+
+function VersionState({ icon, title, description, tone = "neutral" }: { icon: React.ReactNode; title: string; description: string; tone?: "neutral" | "success" | "warning" }) {
+  return (
+    <div className={cn(
+      "flex items-start gap-3 rounded-md border p-4",
+      tone === "success" && "border-emerald-200 bg-emerald-50 text-emerald-900 dark:border-emerald-900 dark:bg-emerald-950/30 dark:text-emerald-100",
+      tone === "warning" && "border-amber-200 bg-amber-50 text-amber-900 dark:border-amber-900 dark:bg-amber-950/30 dark:text-amber-100",
+    )}>
+      <span className="mt-0.5 [&>svg]:h-5 [&>svg]:w-5">{icon}</span>
+      <span className="min-w-0">
+        <span className="block font-medium">{title}</span>
+        <span className="mt-1 block text-sm opacity-75">{description}</span>
+      </span>
+    </div>
+  )
+}
+
+async function waitForUpdatedService(targetVersion: string) {
+  const deadline = Date.now() + 8 * 60_000
+  while (Date.now() < deadline) {
+    await delay(3000)
+    try {
+      const health = await fetch(`/healthz?update=${Date.now()}`, { cache: "no-store" })
+      if (!health.ok) {
+        continue
+      }
+      const response = await fetch(`/api/admin/system/version?update=${Date.now()}`, { credentials: "include", cache: "no-store" })
+      if (!response.ok) continue
+      const body = await response.json() as { currentVersion?: string }
+      if (body.currentVersion === targetVersion) {
+        window.location.reload()
+        return
+      }
+    } catch {}
+  }
+  throw new Error("更新等待超时，请稍后手动刷新页面检查服务状态")
+}
+
+function delay(ms: number) {
+  return new Promise((resolve) => window.setTimeout(resolve, ms))
+}

apps/web/src/components/ui/toast.tsx

@@ -48,7 +48,7 @@ const Toast = React.forwardRef<
   return (
     <ToastPrimitives.Root
       ref={ref}
-      className={cn(toastVariants({ variant }), className)}
+      className={cn(toastVariants({ variant }), props.onClick && "cursor-pointer", className)}
       {...props}
     />
   )
@@ -76,6 +76,10 @@ const ToastClose = React.forwardRef<
 >(({ className, ...props }, ref) => (
   <ToastPrimitives.Close
     ref={ref}
+    onClick={(event) => {
+      event.stopPropagation()
+      props.onClick?.(event)
+    }}
     className={cn(
       "absolute right-1 top-1 rounded-md p-1 text-foreground/50 opacity-0 transition-opacity hover:text-foreground focus:opacity-100 focus:outline-none focus:ring-1 group-hover:opacity-100 group-[.destructive]:text-red-300 group-[.destructive]:hover:text-red-50 group-[.destructive]:focus:ring-red-400 group-[.destructive]:focus:ring-offset-red-600",
       className

apps/web/src/index.css

@@ -5,39 +5,50 @@
 @layer base {
   :root {
     --background: 0 0% 100%;
-    --foreground: 240 10% 3.9%;
+    --foreground: 222.2 84% 4.9%;
     --card: 0 0% 100%;
-    --card-foreground: 240 10% 3.9%;
+    --card-foreground: 222.2 84% 4.9%;
     --popover: 0 0% 100%;
-    --popover-foreground: 240 10% 3.9%;
-    --primary: 240 5.9% 10%;
+    --popover-foreground: 222.2 84% 4.9%;
+    --primary: 224 44% 12%;
     --primary-foreground: 0 0% 98%;
-    --secondary: 240 4.8% 95.9%;
-    --secondary-foreground: 240 5.9% 10%;
-    --muted: 240 4.8% 95.9%;
-    --muted-foreground: 240 3.8% 46.1%;
-    --accent: 240 4.8% 95.9%;
-    --accent-foreground: 240 5.9% 10%;
-    --destructive: 0 84.2% 60.2%;
+    --secondary: 210 40% 96.1%;
+    --secondary-foreground: 222.2 84% 4.9%;
+    --muted: 210 40% 96.1%;
+    --muted-foreground: 215.4 16.3% 46.9%;
+    --accent: 210 40% 96.1%;
+    --accent-foreground: 222.2 84% 4.9%;
+    --destructive: 358 88% 61%;
     --destructive-foreground: 0 0% 98%;
-    --border: 240 5.9% 90%;
-    --input: 240 5.9% 90%;
-    --ring: 240 5.9% 10%;
+    --border: 214.3 31.8% 91.4%;
+    --input: 214.3 31.8% 91.4%;
+    --ring: 216 22% 42%;
     --radius: 0.5rem;
-    --sidebar-background: 0 0% 98%;
-    --sidebar-foreground: 240 5.3% 26.1%;
-    --sidebar-primary: 240 5.9% 10%;
+    --sidebar-background: 0 0% 100%;
+    --sidebar-foreground: 222.2 84% 4.9%;
+    --sidebar-primary: 224 44% 12%;
     --sidebar-primary-foreground: 0 0% 98%;
-    --sidebar-accent: 240 4.8% 95.9%;
-    --sidebar-accent-foreground: 240 5.9% 10%;
-    --sidebar-border: 220 13% 91%;
-    --sidebar-ring: 217.2 91.2% 59.8%;
+    --sidebar-accent: 210 40% 96.1%;
+    --sidebar-accent-foreground: 222.2 84% 4.9%;
+    --sidebar-border: 214.3 31.8% 91.4%;
+    --sidebar-ring: 215.4 16.3% 46.9%;
   }
 
   * { @apply border-border; }
-  body { @apply bg-background text-foreground antialiased; }
-  html, body, #root { min-height: 100%; }
-  html { color-scheme: light; }
+  html {
+    color-scheme: light;
+    font-size: 16px;
+  }
+  body {
+    @apply bg-background text-foreground antialiased;
+    font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
+    font-size: 16px;
+  }
+  html, body, #root {
+    min-height: 100%;
+    min-width: 0;
+    width: 100%;
+  }
   html.dark { color-scheme: dark; }
 
   .dark {
@@ -71,6 +82,72 @@
   }
 }
 
+@layer components {
+  .mail-shell-grid {
+    display: grid;
+    grid-template-columns: clamp(236px, 17vw, 344px) minmax(0, 1fr);
+  }
+
+  .mail-content-grid {
+    display: grid;
+    grid-template-columns: 384px minmax(0, 1fr);
+  }
+
+  .mail-list-pane,
+  .mail-detail-pane {
+    min-height: 0;
+    height: 100%;
+  }
+
+  .mail-list-pane {
+    border-right: 1px solid hsl(var(--border));
+    width: 384px;
+    max-width: 384px;
+  }
+
+  @media (max-width: 767px) {
+    .mail-content-grid {
+      grid-template-columns: minmax(0, 1fr);
+    }
+
+    .mail-list-pane {
+      border-right: 0;
+      width: auto;
+      max-width: none;
+    }
+  }
+
+  [data-sidebar="content"] {
+    gap: 0.75rem;
+  }
+
+  [data-sidebar="group"] {
+    padding: 0 0.25rem;
+  }
+
+  [data-sidebar="menu"] {
+    gap: 0.25rem;
+  }
+
+  [data-sidebar="menu-button"] {
+    color: hsl(var(--sidebar-foreground));
+  }
+
+  [data-sidebar="menu-button"] svg {
+    color: hsl(var(--muted-foreground));
+    stroke-width: 1.8;
+  }
+
+  [data-sidebar="menu-button"][data-active="true"] {
+    background: hsl(var(--sidebar-accent));
+    color: hsl(var(--sidebar-accent-foreground));
+  }
+
+  [data-sidebar="menu-button"][data-active="true"] svg {
+    color: hsl(var(--muted-foreground));
+  }
+}
+
 html.theme-transition body {
   transition: background-color 180ms ease, color 180ms ease;
 }

apps/web/src/lib/api-types.ts

@@ -47,38 +47,161 @@ export type PermissionKey =
   | "admin.templates.update"
   | "admin.templates.reset"
 export type PermissionInfo = { key: PermissionKey; label: string; description: string; category: string }
-export type PermissionLimits = { maxAttachmentMb: number; smtpDailyLimit: number; smtpMinuteLimit: number; imapMinuteLimit: number; pop3MinuteLimit: number }
+export type PermissionLimits = { maxAttachmentMb: number; maxMailboxCount: number; smtpDailyLimit: number; smtpMinuteLimit: number; imapMinuteLimit: number; pop3MinuteLimit: number }
 export type PermissionGroupSummary = { id: string; name: string }
 export type PermissionGroup = { id: string; name: string; description: string; permissions: PermissionKey[]; limits: PermissionLimits; system: boolean; userCount: number; createdAt: string; updatedAt: string }
-export type User = { id: string; email: string; displayName: string; role: "admin" | "user"; disabled: boolean; protected: boolean; twoFactorEnabled: boolean; permissions: PermissionKey[]; limits: PermissionLimits; permissionGroupIds: string[]; permissionGroups: PermissionGroupSummary[]; createdAt: string }
+export type User = { id: string; loginName?: string; email: string; displayName: string; role: "admin" | "user"; disabled: boolean; protected: boolean; twoFactorEnabled: boolean; mailboxLimitOverride?: number | null; permissions: PermissionKey[]; limits: PermissionLimits; permissionGroupIds: string[]; permissionGroups: PermissionGroupSummary[]; createdAt: string }
+export type APIToken = { id: string; name: string; lastUsedAt?: string; expiresAt?: string; disabled: boolean; scopes: string[]; createdAt: string; updatedAt: string }
 export type AdminUser = User & { mailboxCount: number; mailboxes?: string[] }
 export type AdminOverview = { users: number; activeUsers: number; domains: number; mailboxes: number; activeMailboxes: number; aliases: number; messages: number; unreadMessages: number; storageBytes: number }
 export type Domain = { id: string; name: string; status: string; dkimSelector: string; dkimPublicKey?: string; dnsStatus: string; dnsCheckedAt?: string; createdAt: string }
-export type Mailbox = { id: string; userId: string; userEmail?: string; domainId: string; localPart: string; address: string; displayName: string; quotaMb: number; status: string; createdAt: string }
+export type Mailbox = { id: string; userId: string; userEmail?: string; domainId: string; localPart: string; address: string; displayName: string; quotaMb: number; status: string; unreadCount?: number; createdAt: string }
 export type Alias = { id: string; domainId: string; source: string; destination: string; enabled: boolean; createdAt: string }
-export type MailFolder = { id: string; name: string; role: string; unreadCount: number; totalCount: number }
+export type MailFolder = { id: string; name: string; role: string; sortOrder: number; unreadCount: number; totalCount: number; uidValidity: number; uidNext: number; highestModseq: number }
 export type Attachment = { id: string; messageId: string; filename: string; contentType: string; sizeBytes: number; createdAt: string }
 export type MailLabel = { id: string; mailboxId?: string; name: string; color: string; messageCount?: number }
 export type MailMessage = {
-  id: string; mailboxId?: string; mailboxAddress?: string; ownerEmail?: string; recipientAddress?: string; folderId: string; folder: string; messageUid: string; messageId: string; subject: string; from: string; fromName?: string; to: string[]; cc: string[]; bcc?: string[]; sentAt: string; receivedAt: string; snippet: string; bodyText?: string; bodyHtml?: string; isRead: boolean; isStarred: boolean; hasAttachments: boolean; sizeBytes: number; attachments?: Attachment[]
+  id: string; mailboxId?: string; mailboxAddress?: string; ownerEmail?: string; recipientAddress?: string; folderId: string; folder: string; messageUid: string; imapUid: number; imapModseq: number; messageId: string; subject: string; from: string; fromName?: string; to: string[]; cc: string[]; bcc?: string[]; sentAt: string; receivedAt: string; snippet: string; bodyText?: string; bodyHtml?: string; isRead: boolean; isStarred: boolean; hasAttachments: boolean; sizeBytes: number; attachments?: Attachment[]
   labels?: MailLabel[]
+  sendQueueId?: string
+  sendQueueStatus?: SendQueueStatus
+  externalAccountId?: string
 }
 export type DNSRecord = { type: string; name: string; value: string; ttl: number }
 export type DNSCheckResult = { domain: string; status: string; checks: Record<string, { ok: boolean; message: string; found?: string[] }> }
 export type ListResponse<T> = { items: T[]; nextCursor?: string }
+export type MailTranslation = { translatedText: string; translatedHtml?: string; sourceLanguage?: string; targetLanguage: string; truncated: boolean }
 export type SendPayload = { mailboxId?: string; to: string[]; cc: string[]; bcc: string[]; subject: string; text: string; html: string; attachments: { filename: string; contentType: string; contentBase64: string }[] }
 export type DraftPayload = Omit<SendPayload, "attachments"> & { attachments?: SendPayload["attachments"] }
 export type ScheduleSendPayload = SendPayload & { draftId?: string; sendAt: string }
 export type ScheduledSend = { id: string; mailboxId: string; draftId?: string; subject: string; to: string[]; snippet: string; sendAt: string; status: "pending" | "sending" | "sent" | "failed" | "cancelled"; error?: string; createdAt: string; updatedAt: string; sentAt?: string }
+export type SendQueueStatus = "queued" | "sending" | "delivered" | "failed" | "canceled"
+export type SendQueueItem = {
+  id: string
+  mailboxId: string
+  sentMessageId?: string
+  messageId?: string
+  mailFrom?: string
+  headerFrom?: string
+  subject: string
+  recipients: string[]
+  source: string
+  status: SendQueueStatus
+  attemptCount: number
+  maxAttempts: number
+  nextAttemptAt?: string
+  lastError?: string
+  error?: string
+  failureReason?: string
+  createdAt: string
+  updatedAt: string
+  deliveredAt?: string
+}
+export type SendQueueAuditEvent = {
+  id: string
+  queueId?: string
+  mailboxId?: string
+  mailboxAddress?: string
+  sentMessageId?: string
+  messageId?: string
+  source?: string
+  status?: SendQueueStatus
+  event?: string
+  eventType?: string
+  mailFrom?: string
+  headerFrom?: string
+  recipients?: string[]
+  message?: string
+  error?: string
+  attemptCount?: number
+  createdAt: string
+}
 export type Contact = { id: string; name: string; email: string; note: string; createdAt: string }
 export type MailSignature = { id: string; mailboxId: string; name: string; content: string; isDefault: boolean; createdAt: string; updatedAt: string }
-export type MailRuleCondition = { field: "from" | "to" | "subject" | "body"; operator: "contains" | "not-contains" | "equals" | "not-equals" | "starts-with" | "ends-with"; value: string }
-export type MailRuleAction = { type: "archive" | "trash" | "star" | "mark-read" | "label" | "move"; value?: string; labelId?: string }
-export type MailRule = { id: string; mailboxId: string; name: string; matchMode: "all" | "any"; conditions: MailRuleCondition[]; actions: MailRuleAction[]; applyToExisting: boolean; stopProcessing: boolean; fromContains: string; subjectContains: string; action: "archive" | "trash" | "star" | "mark-read" | "label" | "move"; enabled: boolean; createdAt: string; appliedExistingCount?: number }
+export type MailRuleConditionField = "from" | "to" | "cc" | "subject" | "body" | "attachment" | "size" | "date"
+export type MailRuleConditionOperator = "contains" | "not-contains" | "equals" | "not-equals" | "starts-with" | "ends-with" | "gt" | "gte" | "lt" | "lte" | "before" | "after" | "on"
+export type MailRuleCondition = { field?: MailRuleConditionField; operator?: MailRuleConditionOperator; value?: string; matchMode?: "all" | "any"; conditions?: MailRuleCondition[] }
+export type MailRuleAction = { type: "archive" | "trash" | "star" | "mark-read" | "label" | "move" | "forward"; value?: string; labelId?: string }
+export type MailRule = { id: string; mailboxId: string; name: string; matchMode: "all" | "any"; conditions: MailRuleCondition[]; actions: MailRuleAction[]; applyToExisting: boolean; stopProcessing: boolean; fromContains: string; subjectContains: string; action: "archive" | "trash" | "star" | "mark-read" | "label" | "move" | "forward"; enabled: boolean; createdAt: string; appliedExistingCount?: number }
 export type BlockedSender = { id: string; mailboxId: string; email: string; reason: string; createdAt: string }
-export type MailStats = { totalMessages: number; unreadMessages: number; starredMessages: number; attachmentCount: number; storageBytes: number; byFolder: { folder: string; role: string; count: number; unread: number; bytes: number }[] }
+export type MailStats = {
+  totalMessages: number
+  totalIncoming: number
+  totalOutgoing: number
+  unreadMessages: number
+  todayOutgoing: number
+  draftMessages: number
+  failedSends: number
+  starredMessages: number
+  attachmentCount: number
+  attachmentBytes: number
+  storageBytes: number
+  quotaBytes: number
+  quotaUsedPct: number
+  averageMessageBytes: number
+  byFolder: { folder: string; role: string; count: number; unread: number; bytes: number }[]
+  trend: { date: string; incoming: number; outgoing: number }[]
+  distribution: { key: string; label: string; count: number }[]
+  topContacts: { email: string; count: number }[]
+}
+export type ForwardingVerifiedEmail = {
+  id: string
+  email: string
+  verified: boolean
+  createdAt: string
+  verifiedAt?: string
+  verificationSentAt?: string
+  verificationExpiresAt?: string
+  deliveryStatus?: SendQueueStatus | "verified"
+  deliveryError?: string
+}
+export type MailboxForwardingRule = { mailboxId: string; targetEmail: string; targetEmails?: string[] }
+export type ForwardingSettings = { verifiedEmails: ForwardingVerifiedEmail[]; accountTargetEmail: string; accountTargetEmails?: string[]; mailboxRules: MailboxForwardingRule[] }
+export type ExternalImapStorageMode = "local" | "remote"
+export type ExternalImapTlsMode = "tls" | "starttls" | "plain"
+export type ExternalImapAuthMode = "password" | "oauth2"
+export type ExternalImapAccount = { id: string; mailboxId: string; name: string; host: string; port: number; tlsMode: ExternalImapTlsMode; username: string; authMode: ExternalImapAuthMode; oauthProvider?: ExternalImapOAuthProvider; oauthEmail?: string; oauthConfigured?: boolean; storageMode: ExternalImapStorageMode; syncReadState: boolean; enabled: boolean; lastSyncAt?: string; lastStatus: string; lastError?: string; createdAt: string; updatedAt: string }
+export type ExternalImapAccountPayload = { mailboxId: string; name: string; host: string; port: number; tlsMode: ExternalImapTlsMode; username: string; password?: string; storageMode: ExternalImapStorageMode; syncReadState: boolean; enabled: boolean }
+export type ExternalImapOAuthProvider = "gmail" | "outlook"
+export type ExternalImapOAuthStartPayload = { mailboxId: string; name?: string; email?: string; storageMode: ExternalImapStorageMode; syncReadState: boolean; enabled: boolean }
+export type ExternalImapFolder = { name: string; role: string; unreadCount: number; totalCount: number }
+export type ExternalImapSyncRun = { id: string; accountId: string; folder?: string; status: string; imported: number; skipped: number; failed: number; error?: string; startedAt: string; finishedAt?: string }
 export type MailTemplate = { key: string; name: string; subject: string; bodyText: string; bodyHtml: string; updatedAt: string }
 export type MailboxApplyOptions = { enabled: boolean; domains: Domain[]; reservedPrefixes?: string[] }
+export type MaildirSyncCounts = { filesScanned: number; imported: number; backfilled: number; cleaned: number; fileErrors: number }
+export type MaildirSyncRun = { startedAt: string; finishedAt?: string; durationMs: number; status: "running" | "success" | "partial" | "error"; error?: string; counts: MaildirSyncCounts }
+export type MaildirSyncHealth = {
+  configured: boolean
+  enabled: boolean
+  root: string
+  scanSeconds: number
+  workerStarted: boolean
+  running: boolean
+  lastRun?: MaildirSyncRun
+  lastError?: string
+  nextRunAt?: string
+  recentErrors: string[]
+  summary: MaildirSyncCounts
+}
+export type SystemVersion = {
+  currentVersion: string
+  currentCommit?: string
+  buildDate?: string
+  latestVersion?: string
+  latestName?: string
+  releaseUrl?: string
+  releaseNotes?: string
+  publishedAt?: string
+  updateAvailable: boolean
+  updateEnabled: boolean
+  checkError?: string
+}
+export type SystemUpdateResult = {
+  ok: boolean
+  currentVersion: string
+  targetVersion: string
+  message: string
+}
 export type SystemSettings = {
   publicHostname: string
   publicBaseUrl: string
@@ -102,10 +225,18 @@ export type SystemSettings = {
   userMailboxApplyEnabled: boolean
   userMailboxDomainIds: string[]
   reservedMailboxPrefixes: string
+  externalImapEnabled: boolean
+  externalImapSecretSet: boolean
+  externalImapSyncSeconds: number
+  externalImapAllowPrivateHosts: boolean
+  externalImapGmailClientId: string
+  externalImapGmailClientSecretSet: boolean
+  externalImapOutlookClientId: string
+  externalImapOutlookClientSecretSet: boolean
 }
-export type SystemSettingsPayload = Omit<SystemSettings, "smtpPasswordSet" | "turnstileSecretSet"> & { smtpPassword: string; turnstileSecretKey: string }
+export type SystemSettingsPayload = Omit<SystemSettings, "smtpPasswordSet" | "turnstileSecretSet" | "externalImapSecretSet" | "externalImapGmailClientSecretSet" | "externalImapOutlookClientSecretSet"> & { smtpPassword: string; turnstileSecretKey: string; externalImapSecretKey: string; externalImapGmailClientSecret: string; externalImapOutlookClientSecret: string }
 export type PublicDomain = { id: string; name: string }
-export type PublicSettings = { openRegistration: boolean; turnstileEnabled: boolean; turnstileSiteKey: string; publicHostname: string; mailAutoRefresh: boolean; mailRefreshMs: number; mailboxDomains?: PublicDomain[] }
-export type LoginPayload = { email?: string; password?: string; turnstileToken?: string; challengeToken?: string; twoFactorCode?: string }
+export type PublicSettings = { openRegistration: boolean; turnstileEnabled: boolean; turnstileSiteKey: string; publicHostname: string; mailAutoRefresh: boolean; mailRefreshMs: number; externalImapEnabled: boolean; mailboxDomains?: PublicDomain[] }
+export type LoginPayload = { loginName?: string; email?: string; password?: string; turnstileToken?: string; challengeToken?: string; twoFactorCode?: string }
 export type LoginResponse = { user?: User; twoFactorRequired?: boolean; challengeToken?: string }
 export type RegisterPayload = { email: string; displayName: string; password: string; turnstileToken?: string; domainId?: string; localPart?: string }

apps/web/src/lib/api.ts

@@ -1,9 +1,47 @@
-import type { User, AdminUser, AdminOverview, Domain, Mailbox, Alias, MailFolder, Attachment, MailLabel, MailMessage, DNSRecord, DNSCheckResult, ListResponse, SendPayload, DraftPayload, ScheduleSendPayload, ScheduledSend, Contact, MailSignature, MailRule, MailRuleCondition, MailRuleAction, BlockedSender, MailStats, MailboxApplyOptions, MailTemplate, SystemSettings, SystemSettingsPayload, PublicSettings, LoginPayload, LoginResponse, RegisterPayload, PermissionGroup, PermissionInfo, PermissionKey, PermissionLimits } from "./api-types"
+import type { User, AdminUser, AdminOverview, Domain, Mailbox, Alias, MailFolder, Attachment, MailLabel, MailMessage, MailTranslation, DNSRecord, DNSCheckResult, ListResponse, SendPayload, DraftPayload, ScheduleSendPayload, ScheduledSend, SendQueueItem, SendQueueAuditEvent, SendQueueStatus, Contact, MailSignature, MailRule, MailRuleCondition, MailRuleAction, BlockedSender, MailStats, ForwardingSettings, ExternalImapAccount, ExternalImapAccountPayload, ExternalImapFolder, ExternalImapOAuthProvider, ExternalImapOAuthStartPayload, ExternalImapSyncRun, MailboxApplyOptions, MailTemplate, MaildirSyncHealth, SystemSettings, SystemSettingsPayload, SystemVersion, SystemUpdateResult, PublicSettings, LoginPayload, LoginResponse, RegisterPayload, PermissionGroup, PermissionInfo, PermissionKey, PermissionLimits, APIToken } from "./api-types"
 export * from "./api-types"
 
 const REQUEST_TIMEOUT_MS = 15_000
 const MAIL_DELIVERY_TIMEOUT_MS = 60_000
 
+export type MailSearchParams = {
+  q?: string
+  from?: string
+  to?: string
+  subject?: string
+  startDate?: string
+  endDate?: string
+  attachmentMode?: "all" | "with" | "without"
+  minSizeKb?: string
+  maxSizeKb?: string
+  readStatus?: "all" | "read" | "unread"
+  flagStatus?: "all" | "starred" | "unstarred"
+  hasAttachments?: boolean
+  unread?: boolean
+  starred?: boolean
+}
+
+function appendMailSearchParams(params: URLSearchParams, search: MailSearchParams | string) {
+  if (typeof search === "string") {
+    if (search) params.set("q", search)
+    return
+  }
+  if (search.q) params.set("q", search.q)
+  if (search.from) params.set("from", search.from)
+  if (search.to) params.set("to", search.to)
+  if (search.subject) params.set("subject", search.subject)
+  if (search.startDate) params.set("startDate", search.startDate)
+  if (search.endDate) params.set("endDate", search.endDate)
+  if (search.attachmentMode && search.attachmentMode !== "all") params.set("attachmentMode", search.attachmentMode)
+  else if (search.hasAttachments) params.set("hasAttachments", "1")
+  if (search.minSizeKb) params.set("minSizeKb", search.minSizeKb)
+  if (search.maxSizeKb) params.set("maxSizeKb", search.maxSizeKb)
+  if (search.readStatus && search.readStatus !== "all") params.set("readStatus", search.readStatus)
+  else if (search.unread) params.set("unread", "1")
+  if (search.flagStatus && search.flagStatus !== "all") params.set("flagStatus", search.flagStatus)
+  else if (search.starred) params.set("starred", "1")
+}
+
 async function request<T>(path: string, init: RequestInit & { timeoutMs?: number } = {}): Promise<T> {
   const { timeoutMs, ...requestInit } = init
   const controller = new AbortController()
@@ -31,6 +69,35 @@ async function request<T>(path: string, init: RequestInit & { timeoutMs?: number
   }
 }
 
+async function requestFile(path: string): Promise<Blob> {
+  const res = await fetch(path, { credentials: "include" })
+  if (!res.ok) {
+    let message = `${res.status} ${res.statusText}`
+    try { const body = await res.json(); message = body.error || message } catch {}
+    throw new Error(message)
+  }
+  return res.blob()
+}
+
+async function uploadForm<T>(path: string, form: FormData): Promise<T> {
+  const controller = new AbortController()
+  const timeout = window.setTimeout(() => controller.abort(), 5 * 60_000)
+  try {
+    const res = await fetch(path, { method: "POST", credentials: "include", body: form, signal: controller.signal })
+    if (!res.ok) {
+      let message = `${res.status} ${res.statusText}`
+      try { const body = await res.json(); message = body.error || message } catch {}
+      throw new Error(message)
+    }
+    return res.json() as Promise<T>
+  } catch (error) {
+    if (error instanceof DOMException && error.name === "AbortError") throw new Error("导入超时，请缩小文件后重试")
+    throw error instanceof Error ? error : new Error("网络请求失败")
+  } finally {
+    window.clearTimeout(timeout)
+  }
+}
+
 export const api = {
   publicSettings: () => request<PublicSettings>("/api/public/settings"),
   register: (payload: RegisterPayload) => request<{ user: User }>("/api/auth/register", { method: "POST", body: JSON.stringify(payload) }),
@@ -39,6 +106,10 @@ export const api = {
   me: () => request<{ user: User }>("/api/me"),
   updateProfile: (payload: { displayName: string }) => request<{ user: User }>("/api/me/profile", { method: "POST", body: JSON.stringify(payload) }),
   changePassword: (payload: { currentPassword: string; newPassword: string }) => request<{ ok: boolean }>("/api/me/password", { method: "POST", body: JSON.stringify(payload) }),
+  apiTokens: () => request<ListResponse<APIToken>>("/api/me/api-tokens"),
+  createApiToken: (payload: { name: string; expiresAt?: string; scopes: string[] }) => request<{ token: string; item: APIToken }>("/api/me/api-tokens", { method: "POST", body: JSON.stringify(payload) }),
+  updateApiToken: (id: string, payload: { name?: string; expiresAt?: string; disabled?: boolean; scopes?: string[] }) => request<APIToken>(`/api/me/api-tokens/${id}`, { method: "POST", body: JSON.stringify(payload) }),
+  deleteApiToken: (id: string) => request<{ ok: boolean }>(`/api/me/api-tokens/${id}`, { method: "DELETE" }),
   setupTwoFactor: () => request<{ secret: string; otpauthUrl: string }>("/api/me/2fa/setup", { method: "POST" }),
   enableTwoFactor: (code: string) => request<{ user: User }>("/api/me/2fa/enable", { method: "POST", body: JSON.stringify({ code }) }),
   disableTwoFactor: (code: string) => request<{ user: User }>("/api/me/2fa/disable", { method: "POST", body: JSON.stringify({ code }) }),
@@ -53,14 +124,38 @@ export const api = {
   defaultSignature: (mailboxId?: string) => request<{ signature: MailSignature | null }>(`/api/me/signatures/default${mailboxId ? `?mailboxId=${encodeURIComponent(mailboxId)}` : ""}`),
   rules: () => request<ListResponse<MailRule>>("/api/me/rules"),
   createRule: (payload: { mailboxId: string; name: string; matchMode: "all" | "any"; conditions: MailRuleCondition[]; actions: MailRuleAction[]; applyToExisting: boolean; stopProcessing: boolean; enabled: boolean }) => request<MailRule>("/api/me/rules", { method: "POST", body: JSON.stringify(payload) }),
+  updateRule: (id: string, payload: Partial<{ mailboxId: string; name: string; matchMode: "all" | "any"; conditions: MailRuleCondition[]; actions: MailRuleAction[]; applyToExisting: boolean; stopProcessing: boolean; enabled: boolean }>) => request<MailRule>(`/api/me/rules/${id}`, { method: "POST", body: JSON.stringify(payload) }),
+  moveRule: (id: string, direction: "up" | "down") => request<{ ok: boolean }>(`/api/me/rules/${id}/move`, { method: "POST", body: JSON.stringify({ direction }) }),
+  applyRule: (id: string) => request<{ ok: boolean; affected: number }>(`/api/me/rules/${id}/apply`, { method: "POST" }),
   deleteRule: (id: string) => request<{ ok: boolean }>(`/api/me/rules/${id}`, { method: "DELETE" }),
   blockedSenders: () => request<ListResponse<BlockedSender>>("/api/me/blocked-senders"),
   createBlockedSender: (payload: { mailboxId: string; email: string; reason: string }) => request<BlockedSender>("/api/me/blocked-senders", { method: "POST", body: JSON.stringify(payload) }),
   deleteBlockedSender: (id: string) => request<{ ok: boolean }>(`/api/me/blocked-senders/${id}`, { method: "DELETE" }),
-  mailStats: (mailboxId?: string) => request<MailStats>(`/api/me/stats${mailboxId ? `?mailboxId=${encodeURIComponent(mailboxId)}` : ""}`),
+  mailStats: (mailboxId?: string, days?: number) => {
+    const query = new URLSearchParams()
+    if (mailboxId) query.set("mailboxId", mailboxId)
+    if (days) query.set("days", String(days))
+    const suffix = query.toString()
+    return request<MailStats>(`/api/me/stats${suffix ? `?${suffix}` : ""}`)
+  },
   cleanupMail: (payload: { mailboxId: string; target: "empty-trash" | "empty-spam" | "archive-read-inbox" }) => request<{ ok: boolean; affected: number }>("/api/me/cleanup", { method: "POST", body: JSON.stringify(payload) }),
   mailboxApplyOptions: () => request<MailboxApplyOptions>("/api/me/mailbox-apply-options"),
   applyMailbox: (payload: { domainId: string; localPart: string; displayName: string }) => request<Mailbox>("/api/me/mailboxes/apply", { method: "POST", body: JSON.stringify(payload) }),
+  forwardingSettings: () => request<ForwardingSettings>("/api/me/forwarding"),
+  addForwardingVerifiedEmail: (email: string) => request<ForwardingSettings>("/api/me/forwarding/verified-emails", { method: "POST", body: JSON.stringify({ email }) }),
+  resendForwardingVerifiedEmail: (id: string) => request<ForwardingSettings>(`/api/me/forwarding/verified-emails/${id}/resend`, { method: "POST" }),
+  deleteForwardingVerifiedEmail: (id: string) => request<ForwardingSettings>(`/api/me/forwarding/verified-emails/${id}`, { method: "DELETE" }),
+  updateAccountForwarding: (targetEmails: string[] | string) => request<ForwardingSettings>("/api/me/forwarding/account", { method: "POST", body: JSON.stringify(Array.isArray(targetEmails) ? { targetEmails } : { targetEmail: targetEmails }) }),
+  updateMailboxForwarding: (mailboxId: string, targetEmails: string[] | string) => request<ForwardingSettings>(`/api/me/mailboxes/${mailboxId}/forwarding`, { method: "POST", body: JSON.stringify(Array.isArray(targetEmails) ? { targetEmails } : { targetEmail: targetEmails }) }),
+  externalImapAccounts: (mailboxId?: string) => request<ListResponse<ExternalImapAccount>>(`/api/me/external-imap-accounts${mailboxId ? `?mailboxId=${encodeURIComponent(mailboxId)}` : ""}`),
+  createExternalImapAccount: (payload: ExternalImapAccountPayload) => request<ExternalImapAccount>("/api/me/external-imap-accounts", { method: "POST", body: JSON.stringify(payload) }),
+  updateExternalImapAccount: (id: string, payload: ExternalImapAccountPayload) => request<ExternalImapAccount>(`/api/me/external-imap-accounts/${id}`, { method: "POST", body: JSON.stringify(payload) }),
+  deleteExternalImapAccount: (id: string) => request<{ ok: boolean }>(`/api/me/external-imap-accounts/${id}`, { method: "DELETE" }),
+  startExternalImapOAuth: (provider: ExternalImapOAuthProvider, payload: ExternalImapOAuthStartPayload) => request<{ url: string }>(`/api/me/external-imap-oauth/${provider}/start`, { method: "POST", body: JSON.stringify(payload) }),
+  testExternalImapAccount: (id: string) => request<{ ok: boolean; folders: number }>(`/api/me/external-imap-accounts/${id}/test`, { method: "POST", timeoutMs: MAIL_DELIVERY_TIMEOUT_MS }),
+  externalImapSyncRuns: (id: string) => request<ListResponse<ExternalImapSyncRun>>(`/api/me/external-imap-accounts/${id}/runs`),
+  syncExternalImapAccount: (id: string) => request<ExternalImapSyncRun>(`/api/me/external-imap-accounts/${id}/sync`, { method: "POST", timeoutMs: MAIL_DELIVERY_TIMEOUT_MS }),
+  syncExternalImapFolder: (id: string, folder: string) => request<ExternalImapSyncRun>(`/api/me/external-imap-accounts/${id}/sync-folder`, { method: "POST", body: JSON.stringify({ folder }), timeoutMs: MAIL_DELIVERY_TIMEOUT_MS }),
   adminOverview: () => request<AdminOverview>("/api/admin/overview"),
   users: () => request<ListResponse<AdminUser>>("/api/admin/users"),
   permissionGroups: () => request<ListResponse<PermissionGroup> & { catalog: PermissionInfo[] }>("/api/admin/permission-groups"),
@@ -68,8 +163,8 @@ export const api = {
   updatePermissionGroup: (id: string, payload: { name: string; description: string; permissions: PermissionKey[]; limits: PermissionLimits }) => request<PermissionGroup>(`/api/admin/permission-groups/${id}`, { method: "POST", body: JSON.stringify(payload) }),
   defaultPermissionLimits: () => request<PermissionLimits>("/api/admin/permission-limits/defaults"),
   deletePermissionGroup: (id: string) => request<{ ok: boolean }>(`/api/admin/permission-groups/${id}`, { method: "DELETE" }),
-  createUser: (payload: { email: string; displayName: string; role: "admin" | "user"; password: string; disabled: boolean; permissionGroupIds?: string[] }) => request<AdminUser>("/api/admin/users", { method: "POST", body: JSON.stringify(payload) }),
-  updateUser: (id: string, payload: { displayName: string; role: "admin" | "user"; disabled: boolean; permissionGroupIds?: string[] }) => request<AdminUser>(`/api/admin/users/${id}`, { method: "POST", body: JSON.stringify(payload) }),
+  createUser: (payload: { loginName: string; displayName: string; role: "admin" | "user"; password: string; disabled: boolean; mailboxLimitOverride?: number; permissionGroupIds?: string[] }) => request<AdminUser>("/api/admin/users", { method: "POST", body: JSON.stringify(payload) }),
+  updateUser: (id: string, payload: { loginName?: string; displayName: string; role: "admin" | "user"; disabled: boolean; mailboxLimitOverride?: number; permissionGroupIds?: string[] }) => request<AdminUser>(`/api/admin/users/${id}`, { method: "POST", body: JSON.stringify(payload) }),
   resetUserPassword: (id: string, password: string) => request<{ ok: boolean }>(`/api/admin/users/${id}/password`, { method: "POST", body: JSON.stringify({ password }) }),
   deleteUser: (id: string) => request<{ ok: boolean }>(`/api/admin/users/${id}`, { method: "DELETE" }),
   domains: () => request<ListResponse<Domain>>("/api/admin/domains"),
@@ -77,7 +172,7 @@ export const api = {
   updateDomain: (id: string, payload: { status: string }) => request<Domain>(`/api/admin/domains/${id}`, { method: "POST", body: JSON.stringify(payload) }),
   deleteDomain: (id: string) => request<{ ok: boolean }>(`/api/admin/domains/${id}`, { method: "DELETE" }),
   mailboxes: () => request<ListResponse<Mailbox>>("/api/admin/mailboxes"),
-  createMailbox: (payload: { domainId: string; localPart: string; displayName: string; password: string; quotaMb: number; role: "admin" | "user"; ownerEmail?: string; userId?: string }) => request<Mailbox>("/api/admin/mailboxes", { method: "POST", body: JSON.stringify(payload) }),
+  createMailbox: (payload: { domainId: string; localPart: string; displayName: string; password: string; quotaMb: number; role: "admin" | "user"; ownerLoginName?: string; ownerEmail?: string; userId?: string }) => request<Mailbox>("/api/admin/mailboxes", { method: "POST", body: JSON.stringify(payload) }),
   updateMailbox: (id: string, payload: { userId: string; displayName: string; quotaMb: number; status: string }) => request<Mailbox>(`/api/admin/mailboxes/${id}`, { method: "POST", body: JSON.stringify(payload) }),
   deleteMailbox: (id: string) => request<{ ok: boolean }>(`/api/admin/mailboxes/${id}`, { method: "DELETE" }),
   aliases: () => request<ListResponse<Alias>>("/api/admin/aliases"),
@@ -94,7 +189,21 @@ export const api = {
     return request<ListResponse<MailMessage>>(`/api/admin/messages${suffix ? `?${suffix}` : ""}`)
   },
   adminMessage: (id: string) => request<MailMessage>(`/api/admin/messages/${id}`),
+  adminSendAudit: (params: { mailboxId?: string; messageId?: string; event?: string; from?: string; to?: string; cursor?: string } = {}) => {
+    const query = new URLSearchParams()
+    if (params.mailboxId) query.set("mailboxId", params.mailboxId)
+    if (params.messageId) query.set("messageId", params.messageId)
+    if (params.event) query.set("event", params.event)
+    if (params.from) query.set("from", params.from)
+    if (params.to) query.set("to", params.to)
+    if (params.cursor) query.set("cursor", params.cursor)
+    const suffix = query.toString()
+    return request<ListResponse<SendQueueAuditEvent>>(`/api/admin/send-audit${suffix ? `?${suffix}` : ""}`)
+  },
+  systemVersion: () => request<SystemVersion>("/api/admin/system/version"),
+  updateSystem: () => request<SystemUpdateResult>("/api/admin/system/update", { method: "POST", timeoutMs: 45_000 }),
   systemSettings: () => request<SystemSettings>("/api/admin/settings"),
+  maildirSyncHealth: () => request<MaildirSyncHealth>("/api/admin/maildir-sync/health"),
   updateSystemSettings: (payload: SystemSettingsPayload) => request<SystemSettings>("/api/admin/settings", { method: "POST", body: JSON.stringify(payload) }),
   testSmtp: (to: string) => request<{ ok: boolean }>("/api/admin/settings/test-smtp", { method: "POST", body: JSON.stringify({ to }), timeoutMs: MAIL_DELIVERY_TIMEOUT_MS }),
   mailTemplates: () => request<ListResponse<MailTemplate>>("/api/admin/mail-templates"),
@@ -103,33 +212,84 @@ export const api = {
   dnsRecords: (domainId: string) => request<{ items: DNSRecord[] }>(`/api/admin/domains/${domainId}/dns-records`),
   checkDns: (domainId: string) => request<DNSCheckResult>(`/api/admin/domains/${domainId}/check-dns`, { method: "POST" }),
   myMailboxes: () => request<ListResponse<Mailbox>>("/api/mail/mailboxes"),
+  externalMailAccounts: () => request<ListResponse<ExternalImapAccount>>("/api/mail/external-accounts"),
+  externalFolders: (id: string) => request<ListResponse<ExternalImapFolder>>(`/api/mail/external-accounts/${id}/folders`),
+  externalMessages: (id: string, folder: string, cursor = "", q = "") => {
+    const params = new URLSearchParams({ folder, cursor, q })
+    return request<ListResponse<MailMessage>>(`/api/mail/external-accounts/${id}/messages?${params.toString()}`)
+  },
+  externalMessage: (id: string, remoteId: string) => request<MailMessage>(`/api/mail/external-accounts/${id}/messages/${encodeURIComponent(remoteId)}`),
+  markExternalRead: (id: string, remoteId: string, read: boolean) => request<{ ok: boolean }>(`/api/mail/external-accounts/${id}/messages/${encodeURIComponent(remoteId)}/mark-read`, { method: "POST", body: JSON.stringify({ read }) }),
   folders: (mailboxId?: string) => request<ListResponse<MailFolder>>(`/api/mail/folders${mailboxId ? `?mailboxId=${encodeURIComponent(mailboxId)}` : ""}`),
+  createFolder: (payload: { mailboxId?: string; name: string }) => {
+    const query = payload.mailboxId ? `?mailboxId=${encodeURIComponent(payload.mailboxId)}` : ""
+    return request<MailFolder>(`/api/mail/folders${query}`, { method: "POST", body: JSON.stringify({ name: payload.name }) })
+  },
+  reorderFolders: (payload: { mailboxId?: string; folderIds: string[]; folders?: { id: string; sortOrder: number }[] }) => {
+    const query = payload.mailboxId ? `?mailboxId=${encodeURIComponent(payload.mailboxId)}` : ""
+    return request<{ ok: boolean }>(`/api/mail/folders/reorder${query}`, { method: "POST", body: JSON.stringify(payload.folders ? { folders: payload.folders } : { folderIds: payload.folderIds }) })
+  },
+  deleteFolder: (id: string, mailboxId?: string) => request<{ ok: boolean; moved: number }>(`/api/mail/folders/${id}${mailboxId ? `?mailboxId=${encodeURIComponent(mailboxId)}` : ""}`, { method: "DELETE" }),
   labels: (mailboxId?: string) => request<ListResponse<MailLabel>>(`/api/mail/labels${mailboxId ? `?mailboxId=${encodeURIComponent(mailboxId)}` : ""}`),
   createLabel: (payload: { mailboxId?: string; name: string; color?: string }) => {
     const query = payload.mailboxId ? `?mailboxId=${encodeURIComponent(payload.mailboxId)}` : ""
     return request<MailLabel>(`/api/mail/labels${query}`, { method: "POST", body: JSON.stringify({ name: payload.name, color: payload.color || "" }) })
   },
   deleteLabel: (id: string, mailboxId?: string) => request<{ labels: MailLabel[] }>(`/api/mail/labels/${id}${mailboxId ? `?mailboxId=${encodeURIComponent(mailboxId)}` : ""}`, { method: "DELETE" }),
-  messages: (folder: string, q = "", cursor = "", mailboxId?: string) => {
-    const params = new URLSearchParams({ folder, q, cursor })
+  messages: (folder: string, search: MailSearchParams | string = "", cursor = "", mailboxId?: string) => {
+    const params = new URLSearchParams({ folder, cursor })
+    appendMailSearchParams(params, search)
     if (mailboxId) params.set("mailboxId", mailboxId)
     return request<ListResponse<MailMessage>>(`/api/mail/messages?${params.toString()}`)
   },
-  labelMessages: (labelId: string, q = "", cursor = "", mailboxId?: string) => {
-    const params = new URLSearchParams({ labelId, q, cursor })
+  labelMessages: (labelId: string, search: MailSearchParams | string = "", cursor = "", mailboxId?: string) => {
+    const params = new URLSearchParams({ labelId, cursor })
+    appendMailSearchParams(params, search)
     if (mailboxId) params.set("mailboxId", mailboxId)
     return request<ListResponse<MailMessage>>(`/api/mail/messages?${params.toString()}`)
   },
-  starredMessages: (q = "", cursor = "", mailboxId?: string) => {
-    const params = new URLSearchParams({ q, cursor })
+  starredMessages: (search: MailSearchParams | string = "", cursor = "", mailboxId?: string) => {
+    const params = new URLSearchParams({ cursor })
+    appendMailSearchParams(params, search)
     if (mailboxId) params.set("mailboxId", mailboxId)
     return request<ListResponse<MailMessage>>(`/api/mail/starred?${params.toString()}`)
   },
+  exportMail: (params: { view: "folder" | "starred" | "label" | "unknown"; mailboxId?: string; folder?: string; labelId?: string }) => {
+    const query = new URLSearchParams({ view: params.view })
+    if (params.mailboxId) query.set("mailboxId", params.mailboxId)
+    if (params.folder) query.set("folder", params.folder)
+    if (params.labelId) query.set("labelId", params.labelId)
+    return requestFile(`/api/mail/export?${query.toString()}`)
+  },
+  importMail: (files: File[], payload: { mailboxId: string; folder: string }) => {
+    const form = new FormData()
+    form.set("mailboxId", payload.mailboxId)
+    form.set("folder", payload.folder)
+    files.forEach((file) => form.append("files", file))
+    return uploadForm<{ ok: boolean; imported: number; skipped: number; errors: string[] }>("/api/mail/import", form)
+  },
   message: (id: string, options: { markRead?: boolean } = {}) => request<MailMessage>(`/api/mail/messages/${id}${options.markRead === false ? "?markRead=0" : ""}`),
+  translateMessage: (id: string, targetLanguage: string) => request<MailTranslation>(`/api/mail/messages/${id}/translate`, { method: "POST", body: JSON.stringify({ targetLanguage }), timeoutMs: MAIL_DELIVERY_TIMEOUT_MS }),
+  translateExternalMessage: (id: string, remoteId: string, targetLanguage: string) => request<MailTranslation>(`/api/mail/external-accounts/${id}/messages/${encodeURIComponent(remoteId)}/translate`, { method: "POST", body: JSON.stringify({ targetLanguage }), timeoutMs: MAIL_DELIVERY_TIMEOUT_MS }),
   send: (payload: SendPayload) => request<MailMessage>("/api/mail/send", { method: "POST", body: JSON.stringify(payload), timeoutMs: MAIL_DELIVERY_TIMEOUT_MS }),
   scheduledSends: (mailboxId?: string) => request<ListResponse<ScheduledSend>>(`/api/mail/scheduled-sends${mailboxId ? `?mailboxId=${encodeURIComponent(mailboxId)}` : ""}`),
   scheduleSend: (payload: ScheduleSendPayload) => request<ScheduledSend>("/api/mail/schedule-send", { method: "POST", body: JSON.stringify(payload), timeoutMs: MAIL_DELIVERY_TIMEOUT_MS }),
   cancelScheduledSend: (id: string) => request<{ ok: boolean }>(`/api/mail/schedule-send/${id}`, { method: "DELETE" }),
+  sendQueue: (params: { mailboxId?: string; status?: SendQueueStatus | "all"; cursor?: string; messageId?: string; recipient?: string; from?: string; to?: string } = {}) => {
+    const query = new URLSearchParams()
+    if (params.mailboxId) query.set("mailboxId", params.mailboxId)
+    if (params.status && params.status !== "all") query.set("status", params.status)
+    if (params.cursor) query.set("cursor", params.cursor)
+    if (params.messageId) query.set("messageId", params.messageId)
+    if (params.recipient) query.set("recipient", params.recipient)
+    if (params.from) query.set("from", params.from)
+    if (params.to) query.set("to", params.to)
+    const suffix = query.toString()
+    return request<ListResponse<SendQueueItem>>(`/api/mail/send-queue${suffix ? `?${suffix}` : ""}`)
+  },
+  sendQueueAudit: (id: string) => request<ListResponse<SendQueueAuditEvent>>(`/api/mail/send-queue/${id}/audit`),
+  retrySendQueue: (id: string) => request<SendQueueItem>(`/api/mail/send-queue/${id}/retry`, { method: "POST", timeoutMs: MAIL_DELIVERY_TIMEOUT_MS }),
+  cancelSendQueue: (id: string) => request<SendQueueItem>(`/api/mail/send-queue/${id}`, { method: "DELETE" }),
   saveDraft: (payload: DraftPayload, id?: string) => request<MailMessage>(id ? `/api/mail/drafts/${id}` : "/api/mail/drafts", { method: "POST", body: JSON.stringify(payload), timeoutMs: MAIL_DELIVERY_TIMEOUT_MS }),
   deleteDraft: (id: string) => request<{ ok: boolean }>(`/api/mail/drafts/${id}`, { method: "DELETE" }),
   markRead: (id: string, read: boolean) => request<{ ok: boolean }>(`/api/mail/messages/${id}/mark-read`, { method: "POST", body: JSON.stringify({ read }) }),
@@ -139,6 +299,3 @@ export const api = {
   move: (id: string, folder: string) => request<{ ok: boolean }>(`/api/mail/messages/${id}/move`, { method: "POST", body: JSON.stringify({ folder }) }),
   delete: (id: string) => request<{ ok: boolean }>(`/api/mail/messages/${id}`, { method: "DELETE" }),
 }
-
-
-

apps/web/src/lib/language.tsx

@@ -0,0 +1,470 @@
+
+import * as React from "react"
+
+export type Language = "zh-CN" | "zh-TW" | "en"
+
+export const LANGUAGE_STORAGE_KEY = "lanqin:language"
+
+export const languageOptions: { value: Language; label: string; shortLabel: string; htmlLang: string }[] = [
+  { value: "zh-CN", label: "简体中文", shortLabel: "简", htmlLang: "zh-CN" },
+  { value: "zh-TW", label: "繁體中文", shortLabel: "繁", htmlLang: "zh-TW" },
+  { value: "en", label: "English", shortLabel: "EN", htmlLang: "en" },
+]
+
+const languageValues = new Set(languageOptions.map((item) => item.value))
+
+export function getInitialLanguage(): Language {
+  if (typeof window === "undefined") return "zh-CN"
+  const stored = window.localStorage.getItem(LANGUAGE_STORAGE_KEY)
+  if (stored && languageValues.has(stored as Language)) return stored as Language
+  const browserLanguage = window.navigator.language.toLowerCase()
+  if (browserLanguage.startsWith("zh-tw") || browserLanguage.startsWith("zh-hk") || browserLanguage.startsWith("zh-mo")) return "zh-TW"
+  if (browserLanguage.startsWith("en")) return "en"
+  return "zh-CN"
+}
+
+export function setStoredLanguage(language: Language) {
+  window.localStorage.setItem(LANGUAGE_STORAGE_KEY, language)
+  window.dispatchEvent(new CustomEvent("lanqin:language", { detail: language }))
+}
+
+export function useLanguage() {
+  const [language, setLanguageState] = React.useState<Language>(getInitialLanguage)
+  React.useEffect(() => {
+    function sync() {
+      setLanguageState(getInitialLanguage())
+    }
+    window.addEventListener("storage", sync)
+    window.addEventListener("lanqin:language", sync)
+    return () => {
+      window.removeEventListener("storage", sync)
+      window.removeEventListener("lanqin:language", sync)
+    }
+  }, [])
+  const setLanguage = React.useCallback((nextLanguage: Language) => {
+    setStoredLanguage(nextLanguage)
+    setLanguageState(nextLanguage)
+  }, [])
+  return [language, setLanguage] as const
+}
+
+type Translation = { "zh-TW": string; en: string }
+
+const exactTranslations: Record<string, Translation> = {
+  "收件箱": { "zh-TW": "收件匣", en: "Inbox" },
+  "已发送": { "zh-TW": "已傳送", en: "Sent" },
+  "草稿箱": { "zh-TW": "草稿匣", en: "Drafts" },
+  "归档": { "zh-TW": "封存", en: "Archive" },
+  "垃圾邮件": { "zh-TW": "垃圾郵件", en: "Spam" },
+  "回收站": { "zh-TW": "垃圾桶", en: "Trash" },
+  "全部邮件": { "zh-TW": "全部郵件", en: "All mail" },
+  "未读邮件": { "zh-TW": "未讀郵件", en: "Unread" },
+  "星标邮件": { "zh-TW": "星號郵件", en: "Starred" },
+  "有附件": { "zh-TW": "有附件", en: "Has attachments" },
+  "切换语言": { "zh-TW": "切換語言", en: "Switch language" },
+  "写邮件": { "zh-TW": "寫郵件", en: "Compose" },
+  "邮件夹": { "zh-TW": "郵件匣", en: "Folders" },
+  "外部邮箱": { "zh-TW": "外部信箱", en: "External mailbox" },
+  "标签": { "zh-TW": "標籤", en: "Labels" },
+  "暂无标签": { "zh-TW": "暫無標籤", en: "No labels" },
+  "收起侧栏": { "zh-TW": "收合側欄", en: "Collapse sidebar" },
+  "选择邮箱": { "zh-TW": "選擇信箱", en: "Select mailbox" },
+  "没有可用邮箱": { "zh-TW": "沒有可用信箱", en: "No mailboxes available" },
+  "邮箱地址已复制": { "zh-TW": "信箱地址已複製", en: "Mailbox address copied" },
+  "打开导航": { "zh-TW": "開啟導覽", en: "Open navigation" },
+  "邮箱导航": { "zh-TW": "信箱導覽", en: "Mailbox navigation" },
+  "刷新邮件": { "zh-TW": "重新整理郵件", en: "Refresh mail" },
+  "自动刷新中": { "zh-TW": "自動重新整理中", en: "Auto-refreshing" },
+  "自动刷新中...": { "zh-TW": "自動重新整理中...", en: "Auto-refreshing..." },
+  "自动刷新已开启": { "zh-TW": "自動重新整理已開啟", en: "Auto-refresh enabled" },
+  "全部已读": { "zh-TW": "全部已讀", en: "Mark all read" },
+  "搜索邮件": { "zh-TW": "搜尋郵件", en: "Search mail" },
+  "搜索远端邮件": { "zh-TW": "搜尋遠端郵件", en: "Search remote mail" },
+  "搜索发送队列": { "zh-TW": "搜尋傳送佇列", en: "Search send queue" },
+  "搜索待发送": { "zh-TW": "搜尋待傳送", en: "Search scheduled mail" },
+  "选择当前页邮件": { "zh-TW": "選擇目前頁面的郵件", en: "Select messages on this page" },
+  "加载中...": { "zh-TW": "載入中...", en: "Loading..." },
+  "加载更多": { "zh-TW": "載入更多", en: "Load more" },
+  "选择一封邮件阅读": { "zh-TW": "選擇一封郵件閱讀", en: "Select a message to read" },
+  "回复": { "zh-TW": "回覆", en: "Reply" },
+  "转发": { "zh-TW": "轉寄", en: "Forward" },
+  "投递时间线": { "zh-TW": "投遞時間軸", en: "Delivery timeline" },
+  "取消归档": { "zh-TW": "取消封存", en: "Unarchive" },
+  "删除": { "zh-TW": "刪除", en: "Delete" },
+  "附件": { "zh-TW": "附件", en: "Attachments" },
+  "确认": { "zh-TW": "確認", en: "Confirm" },
+  "取消": { "zh-TW": "取消", en: "Cancel" },
+  "关闭": { "zh-TW": "關閉", en: "Close" },
+  "打开": { "zh-TW": "開啟", en: "Open" },
+  "刷新": { "zh-TW": "重新整理", en: "Refresh" },
+  "新建文件夹": { "zh-TW": "新增資料夾", en: "New folder" },
+  "文件夹名称": { "zh-TW": "資料夾名稱", en: "Folder name" },
+  "创建": { "zh-TW": "建立", en: "Create" },
+  "创建中...": { "zh-TW": "建立中...", en: "Creating..." },
+  "例如：客户、账单、项目归档": { "zh-TW": "例如：客戶、帳單、專案封存", en: "e.g. Clients, invoices, project archive" },
+  "新建标签": { "zh-TW": "新增標籤", en: "New label" },
+  "删除标签失败": { "zh-TW": "刪除標籤失敗", en: "Failed to delete label" },
+  "添加标签失败": { "zh-TW": "新增標籤失敗", en: "Failed to add label" },
+  "移除标签失败": { "zh-TW": "移除標籤失敗", en: "Failed to remove label" },
+  "创建标签失败": { "zh-TW": "建立標籤失敗", en: "Failed to create label" },
+  "添加标签": { "zh-TW": "新增標籤", en: "Add label" },
+  "请先在侧栏新建标签": { "zh-TW": "請先在側欄新增標籤", en: "Create a label in the sidebar first" },
+  "无": { "zh-TW": "無", en: "None" },
+  "无主题": { "zh-TW": "無主旨", en: "No subject" },
+  "(无主题)": { "zh-TW": "(無主旨)", en: "(No subject)" },
+  "未知发件人": { "zh-TW": "未知寄件者", en: "Unknown sender" },
+  "未知发件人地址": { "zh-TW": "未知寄件者地址", en: "Unknown sender address" },
+  "发件人": { "zh-TW": "寄件者", en: "Sender" },
+  "发件人地址": { "zh-TW": "寄件者地址", en: "Sender address" },
+  "收件人": { "zh-TW": "收件者", en: "Recipients" },
+  "抄送": { "zh-TW": "副本", en: "Cc" },
+  "密送": { "zh-TW": "密件副本", en: "Bcc" },
+  "投递邮箱": { "zh-TW": "投遞信箱", en: "Delivered mailbox" },
+  "发送时间": { "zh-TW": "傳送時間", en: "Send time" },
+  "接收时间": { "zh-TW": "接收時間", en: "Received time" },
+  "未填写收件人": { "zh-TW": "未填寫收件者", en: "No recipients" },
+  "邮件正文": { "zh-TW": "郵件內文", en: "Message body" },
+  "邮件详情": { "zh-TW": "郵件詳情", en: "Message details" },
+  "上一封": { "zh-TW": "上一封", en: "Previous" },
+  "下一封": { "zh-TW": "下一封", en: "Next" },
+  "更多操作": { "zh-TW": "更多操作", en: "More actions" },
+  "邮件不存在": { "zh-TW": "郵件不存在", en: "Message not found" },
+  "标为已读": { "zh-TW": "標為已讀", en: "Mark as read" },
+  "标为未读": { "zh-TW": "標為未讀", en: "Mark as unread" },
+  "添加星标": { "zh-TW": "加上星號", en: "Add star" },
+  "取消星标": { "zh-TW": "移除星號", en: "Remove star" },
+  "移入回收站": { "zh-TW": "移至垃圾桶", en: "Move to trash" },
+  "移入垃圾邮件": { "zh-TW": "移至垃圾郵件", en: "Move to spam" },
+  "批量操作": { "zh-TW": "批次操作", en: "Bulk actions" },
+  "移动到": { "zh-TW": "移動到", en: "Move to" },
+  "移到最上": { "zh-TW": "移到最上方", en: "Move to top" },
+  "上移一位": { "zh-TW": "上移一位", en: "Move up" },
+  "下移一位": { "zh-TW": "下移一位", en: "Move down" },
+  "移到最下": { "zh-TW": "移到最下方", en: "Move to bottom" },
+  "删除文件夹": { "zh-TW": "刪除資料夾", en: "Delete folder" },
+  "远端文件夹没有邮件": { "zh-TW": "遠端資料夾沒有郵件", en: "No messages in remote folder" },
+  "当前筛选条件下没有远端邮件": { "zh-TW": "目前篩選條件下沒有遠端郵件", en: "No remote messages match the current filters" },
+  "没有待发送邮件": { "zh-TW": "沒有待傳送郵件", en: "No scheduled mail" },
+  "当前搜索没有匹配的定时邮件": { "zh-TW": "目前搜尋沒有符合的定時郵件", en: "No scheduled messages match your search" },
+  "发送队列为空": { "zh-TW": "傳送佇列為空", en: "Send queue is empty" },
+  "当前搜索没有匹配的发送任务": { "zh-TW": "目前搜尋沒有符合的傳送任務", en: "No send tasks match your search" },
+  "当前筛选条件下没有邮件": { "zh-TW": "目前篩選條件下沒有郵件", en: "No messages match the current filters" },
+  "暂无星标邮件": { "zh-TW": "暫無星號郵件", en: "No starred mail" },
+  "当前标签没有邮件": { "zh-TW": "目前標籤沒有郵件", en: "No messages with this label" },
+  "收件箱暂时为空": { "zh-TW": "收件匣暫時為空", en: "Inbox is empty" },
+  "还没有草稿": { "zh-TW": "還沒有草稿", en: "No drafts yet" },
+  "还没有已发送邮件": { "zh-TW": "還沒有已傳送郵件", en: "No sent mail yet" },
+  "回收站是空的": { "zh-TW": "垃圾桶是空的", en: "Trash is empty" },
+  "暂无垃圾邮件": { "zh-TW": "暫無垃圾郵件", en: "No spam" },
+  "当前文件夹没有邮件": { "zh-TW": "目前資料夾沒有郵件", en: "No messages in this folder" },
+  "待发送": { "zh-TW": "待傳送", en: "Scheduled" },
+  "发送队列": { "zh-TW": "傳送佇列", en: "Send queue" },
+  "全部状态": { "zh-TW": "全部狀態", en: "All statuses" },
+  "排队中": { "zh-TW": "佇列中", en: "Queued" },
+  "发送中": { "zh-TW": "傳送中", en: "Sending" },
+  "发送失败": { "zh-TW": "傳送失敗", en: "Failed" },
+  "已投递": { "zh-TW": "已投遞", en: "Delivered" },
+  "已取消": { "zh-TW": "已取消", en: "Canceled" },
+  "等待发送": { "zh-TW": "等待傳送", en: "Pending" },
+  "清除": { "zh-TW": "清除", en: "Clear" },
+  "未记录收件人": { "zh-TW": "未記錄收件者", en: "No recorded recipients" },
+  "时间线": { "zh-TW": "時間軸", en: "Timeline" },
+  "重试": { "zh-TW": "重試", en: "Retry" },
+  "暂无投递事件": { "zh-TW": "暫無投遞事件", en: "No delivery events" },
+  "队列事件": { "zh-TW": "佇列事件", en: "Queue event" },
+  "定时发送": { "zh-TW": "定時傳送", en: "Scheduled send" },
+  "未知": { "zh-TW": "未知", en: "Unknown" },
+  "同步": { "zh-TW": "同步", en: "Sync" },
+  "直连": { "zh-TW": "直連", en: "Direct" },
+  "还没有可用邮箱": { "zh-TW": "還沒有可用信箱", en: "No mailbox available" },
+  "请在个人中心申请邮箱，或联系管理员为当前账号分配邮箱。": { "zh-TW": "請在個人中心申請信箱，或聯絡管理員為目前帳號分配信箱。", en: "Apply for a mailbox in Profile, or contact an administrator to assign one to this account." },
+  "前往个人中心": { "zh-TW": "前往個人中心", en: "Go to profile" },
+  "无邮箱前台权限": { "zh-TW": "無信箱前台權限", en: "No mailbox access" },
+  "当前账号未开启邮箱前台访问权限。": { "zh-TW": "目前帳號未開啟信箱前台存取權限。", en: "Mailbox access is not enabled for this account." },
+  "无邮件查看权限": { "zh-TW": "無郵件檢視權限", en: "No mail read permission" },
+  "当前账号可以访问邮箱前台，但未开启邮件查看权限。": { "zh-TW": "目前帳號可以存取信箱前台，但未開啟郵件檢視權限。", en: "This account can access mailbox UI, but mail reading is not enabled." },
+  "无定时发送权限": { "zh-TW": "無定時傳送權限", en: "No scheduled send permission" },
+  "当前账号不能查看或管理定时发送任务。": { "zh-TW": "目前帳號不能檢視或管理定時傳送任務。", en: "This account cannot view or manage scheduled send tasks." },
+  "无发送队列权限": { "zh-TW": "無傳送佇列權限", en: "No send queue permission" },
+  "当前账号不能查看发送队列。": { "zh-TW": "目前帳號不能檢視傳送佇列。", en: "This account cannot view the send queue." },
+  "操作失败": { "zh-TW": "操作失敗", en: "Operation failed" },
+  "请稍后重试": { "zh-TW": "請稍後重試", en: "Please try again later" },
+  "已取消定时发送": { "zh-TW": "已取消定時傳送", en: "Scheduled send canceled" },
+  "已移除失败记录": { "zh-TW": "已移除失敗記錄", en: "Failed record removed" },
+  "文件夹已创建": { "zh-TW": "資料夾已建立", en: "Folder created" },
+  "创建文件夹失败": { "zh-TW": "建立資料夾失敗", en: "Failed to create folder" },
+  "文件夹排序失败": { "zh-TW": "資料夾排序失敗", en: "Failed to reorder folders" },
+  "文件夹已删除": { "zh-TW": "資料夾已刪除", en: "Folder deleted" },
+  "删除文件夹失败": { "zh-TW": "刪除資料夾失敗", en: "Failed to delete folder" },
+  "已重新加入发送队列": { "zh-TW": "已重新加入傳送佇列", en: "Added back to send queue" },
+  "重试失败": { "zh-TW": "重試失敗", en: "Retry failed" },
+  "已取消发送任务": { "zh-TW": "已取消傳送任務", en: "Send task canceled" },
+  "取消失败": { "zh-TW": "取消失敗", en: "Cancel failed" },
+  "当前没有未读邮件": { "zh-TW": "目前沒有未讀郵件", en: "No unread messages" },
+  "删除所选邮件？": { "zh-TW": "刪除所選郵件？", en: "Delete selected messages?" },
+  "删除邮件": { "zh-TW": "刪除郵件", en: "Delete messages" },
+  "批量操作失败": { "zh-TW": "批次操作失敗", en: "Bulk action failed" },
+  "删除这封邮件？": { "zh-TW": "刪除這封郵件？", en: "Delete this message?" },
+  "这封草稿已在待发送队列中": { "zh-TW": "這封草稿已在待傳送佇列中", en: "This draft is already scheduled" },
+  "请先取消定时发送，再继续编辑。": { "zh-TW": "請先取消定時傳送，再繼續編輯。", en: "Cancel the scheduled send before editing." },
+  "打开草稿失败": { "zh-TW": "開啟草稿失敗", en: "Failed to open draft" },
+  "文件夹内的邮件会移回收件箱，不会被删除。": { "zh-TW": "資料夾內的郵件會移回收件匣，不會被刪除。", en: "Messages in this folder will be moved back to Inbox, not deleted." },
+  "编辑草稿": { "zh-TW": "編輯草稿", en: "Edit draft" },
+  "打开邮件": { "zh-TW": "開啟郵件", en: "Open message" },
+  "发件邮箱": { "zh-TW": "寄件信箱", en: "From mailbox" },
+  "未选择": { "zh-TW": "未選擇", en: "Not selected" },
+  "分别发送": { "zh-TW": "分別傳送", en: "Send separately" },
+  "主　题": { "zh-TW": "主　旨", en: "Subject" },
+  "输入主题": { "zh-TW": "輸入主旨", en: "Enter subject" },
+  "写信": { "zh-TW": "寫信", en: "Compose" },
+  "正在保存草稿...": { "zh-TW": "正在儲存草稿...", en: "Saving draft..." },
+  "草稿保存失败": { "zh-TW": "草稿儲存失敗", en: "Failed to save draft" },
+  "发送": { "zh-TW": "傳送", en: "Send" },
+  "发送中...": { "zh-TW": "傳送中...", en: "Sending..." },
+  "发送成功": { "zh-TW": "傳送成功", en: "Sent" },
+  "定时": { "zh-TW": "定時", en: "Schedule" },
+  "继续": { "zh-TW": "繼續", en: "Continue" },
+  "继续发送": { "zh-TW": "繼續傳送", en: "Continue sending" },
+  "继续分别发送": { "zh-TW": "繼續分別傳送", en: "Continue sending separately" },
+  "继续定时发送": { "zh-TW": "繼續定時傳送", en: "Continue scheduling" },
+  "请选择发件邮箱": { "zh-TW": "請選擇寄件信箱", en: "Select a from mailbox" },
+  "确认发送这封邮件？": { "zh-TW": "確認傳送這封郵件？", en: "Send this message?" },
+  "确认定时发送？": { "zh-TW": "確認定時傳送？", en: "Schedule this message?" },
+  "请选择发送时间": { "zh-TW": "請選擇傳送時間", en: "Select a send time" },
+  "发送时间需要晚于当前时间": { "zh-TW": "傳送時間需要晚於目前時間", en: "Send time must be in the future" },
+  "确认定时": { "zh-TW": "確認定時", en: "Confirm schedule" },
+  "正在设置...": { "zh-TW": "正在設定...", en: "Scheduling..." },
+  "输入正文": { "zh-TW": "輸入內文", en: "Write your message" },
+  "正文": { "zh-TW": "內文", en: "Body" },
+  "撤销": { "zh-TW": "復原", en: "Undo" },
+  "重做": { "zh-TW": "重做", en: "Redo" },
+  "插入": { "zh-TW": "插入", en: "Insert" },
+  "链接": { "zh-TW": "連結", en: "Link" },
+  "图片链接": { "zh-TW": "圖片連結", en: "Image link" },
+  "分隔线": { "zh-TW": "分隔線", en: "Divider" },
+  "日程": { "zh-TW": "行程", en: "Event" },
+  "表情": { "zh-TW": "表情", en: "Emoji" },
+  "格式": { "zh-TW": "格式", en: "Format" },
+  "预览": { "zh-TW": "預覽", en: "Preview" },
+  "签名": { "zh-TW": "簽名", en: "Signature" },
+  "清除格式": { "zh-TW": "清除格式", en: "Clear formatting" },
+  "加粗": { "zh-TW": "粗體", en: "Bold" },
+  "斜体": { "zh-TW": "斜體", en: "Italic" },
+  "下划线": { "zh-TW": "底線", en: "Underline" },
+  "删除线": { "zh-TW": "刪除線", en: "Strikethrough" },
+  "文字颜色": { "zh-TW": "文字顏色", en: "Text color" },
+  "高亮": { "zh-TW": "醒目提示", en: "Highlight" },
+  "无序列表": { "zh-TW": "項目符號清單", en: "Bulleted list" },
+  "有序列表": { "zh-TW": "編號清單", en: "Numbered list" },
+  "减少缩进": { "zh-TW": "減少縮排", en: "Decrease indent" },
+  "增加缩进": { "zh-TW": "增加縮排", en: "Increase indent" },
+  "左对齐": { "zh-TW": "靠左對齊", en: "Align left" },
+  "居中": { "zh-TW": "置中", en: "Center" },
+  "右对齐": { "zh-TW": "靠右對齊", en: "Align right" },
+  "引用": { "zh-TW": "引用", en: "Quote" },
+  "代码块": { "zh-TW": "程式碼區塊", en: "Code block" },
+  "邮件预览": { "zh-TW": "郵件預覽", en: "Message preview" },
+  "编辑链接": { "zh-TW": "編輯連結", en: "Edit link" },
+  "插入链接": { "zh-TW": "插入連結", en: "Insert link" },
+  "编辑图片": { "zh-TW": "編輯圖片", en: "Edit image" },
+  "插入图片": { "zh-TW": "插入圖片", en: "Insert image" },
+  "链接地址": { "zh-TW": "連結地址", en: "Link URL" },
+  "图片地址": { "zh-TW": "圖片地址", en: "Image URL" },
+  "显示文字": { "zh-TW": "顯示文字", en: "Display text" },
+  "默认使用链接地址": { "zh-TW": "預設使用連結地址", en: "Defaults to the URL" },
+  "替代文字": { "zh-TW": "替代文字", en: "Alt text" },
+  "图片说明": { "zh-TW": "圖片說明", en: "Image description" },
+  "更新": { "zh-TW": "更新", en: "Update" },
+  "默认字体": { "zh-TW": "預設字體", en: "Default font" },
+  "微软雅黑": { "zh-TW": "微軟正黑體", en: "Microsoft YaHei" },
+  "小号": { "zh-TW": "小號", en: "Small" },
+  "中号": { "zh-TW": "中號", en: "Medium" },
+  "大号": { "zh-TW": "大號", en: "Large" },
+  "默认": { "zh-TW": "預設", en: "Default" },
+  "红色": { "zh-TW": "紅色", en: "Red" },
+  "蓝色": { "zh-TW": "藍色", en: "Blue" },
+  "绿色": { "zh-TW": "綠色", en: "Green" },
+  "紫色": { "zh-TW": "紫色", en: "Purple" },
+  "黄色": { "zh-TW": "黃色", en: "Yellow" },
+  "粉色": { "zh-TW": "粉色", en: "Pink" },
+  "无高亮": { "zh-TW": "無醒目提示", en: "No highlight" },
+  "新建日程": { "zh-TW": "新增行程", en: "New event" },
+  "输入日程主题": { "zh-TW": "輸入行程主旨", en: "Enter event title" },
+  "请输入日程主题": { "zh-TW": "請輸入行程主旨", en: "Enter an event title" },
+  "开始": { "zh-TW": "開始", en: "Start" },
+  "全天": { "zh-TW": "全天", en: "All day" },
+  "持续": { "zh-TW": "持續", en: "Duration" },
+  "自定义": { "zh-TW": "自訂", en: "Custom" },
+  "提醒": { "zh-TW": "提醒", en: "Reminder" },
+  "重复": { "zh-TW": "重複", en: "Repeat" },
+  "农历": { "zh-TW": "農曆", en: "Lunar" },
+  "位置": { "zh-TW": "位置", en: "Location" },
+  "请输入位置": { "zh-TW": "請輸入位置", en: "Enter location" },
+  "描述": { "zh-TW": "描述", en: "Description" },
+  "输入描述": { "zh-TW": "輸入描述", en: "Enter description" },
+  "确定": { "zh-TW": "確定", en: "OK" },
+  "准时": { "zh-TW": "準時", en: "On time" },
+  "永不": { "zh-TW": "永不", en: "Never" },
+  "每天": { "zh-TW": "每天", en: "Daily" },
+  "每周": { "zh-TW": "每週", en: "Weekly" },
+  "每月": { "zh-TW": "每月", en: "Monthly" },
+  "每年": { "zh-TW": "每年", en: "Yearly" },
+  "明早 9 点": { "zh-TW": "明早 9 點", en: "Tomorrow 9 AM" },
+  "下周一 9 点": { "zh-TW": "下週一 9 點", en: "Next Monday 9 AM" },
+  "时间": { "zh-TW": "時間", en: "Time" },
+}
+
+const templateTranslations: { pattern: RegExp; "zh-TW": string; en: string }[] = [
+  { pattern: /^已刷新 (.+)$/, "zh-TW": "已重新整理 $1", en: "Refreshed $1" },
+  { pattern: /^已选 (\d+) 封$/, "zh-TW": "已選 $1 封", en: "$1 selected" },
+  { pattern: /^(\d+) \/ (\d+) 封邮件$/, "zh-TW": "$1 / $2 封郵件", en: "$1 / $2 messages" },
+  { pattern: /^(\d+) \/ (\d+) 封$/, "zh-TW": "$1 / $2 封", en: "$1 / $2 messages" },
+  { pattern: /^(\d+) \/ (\d+) 封定时邮件$/, "zh-TW": "$1 / $2 封定時郵件", en: "$1 / $2 scheduled messages" },
+  { pattern: /^(\d+) \/ (\d+) 个发送任务$/, "zh-TW": "$1 / $2 個傳送任務", en: "$1 / $2 send tasks" },
+  { pattern: /^收到 (\d+) 封新邮件$/, "zh-TW": "收到 $1 封新郵件", en: "$1 new messages" },
+  { pattern: /^新邮件：(.+)$/, "zh-TW": "新郵件：$1", en: "New message: $1" },
+  { pattern: /^(.+) 等发来新邮件$/, "zh-TW": "$1 等寄來新郵件", en: "$1 and others sent new mail" },
+  { pattern: /^已标记 (\d+) 封邮件为已读$/, "zh-TW": "已標記 $1 封郵件為已讀", en: "Marked $1 messages as read" },
+  { pattern: /^已处理 (\d+) 封邮件$/, "zh-TW": "已處理 $1 封郵件", en: "Processed $1 messages" },
+  { pattern: /^将删除当前选中的 (\d+) 封邮件，此操作无法从邮件列表中恢复。$/, "zh-TW": "將刪除目前選取的 $1 封郵件，此操作無法從郵件清單中復原。", en: "This will delete the $1 selected messages. This cannot be undone from the message list." },
+  { pattern: /^邮件“(.+)”将被删除。$/, "zh-TW": "郵件「$1」將被刪除。", en: "Message “$1” will be deleted." },
+  { pattern: /^删除文件夹“(.+)”？$/, "zh-TW": "刪除資料夾「$1」？", en: "Delete folder “$1”?" },
+  { pattern: /^删除标签 (.+)$/, "zh-TW": "刪除標籤 $1", en: "Delete label $1" },
+  { pattern: /^移除标签 (.+)$/, "zh-TW": "移除標籤 $1", en: "Remove label $1" },
+  { pattern: /^移除 (.+)$/, "zh-TW": "移除 $1", en: "Remove $1" },
+  { pattern: /^已将 (\d+) 封邮件移回收件箱$/, "zh-TW": "已將 $1 封郵件移回收件匣", en: "Moved $1 messages back to Inbox" },
+  { pattern: /^发给 (.+)$/, "zh-TW": "寄給 $1", en: "To $1" },
+  { pattern: /^来源：(.+)$/, "zh-TW": "來源：$1", en: "Source: $1" },
+  { pattern: /^尝试：(\d+)\/(\d+)$/, "zh-TW": "嘗試：$1/$2", en: "Attempts: $1/$2" },
+  { pattern: /^下次：(.+)$/, "zh-TW": "下次：$1", en: "Next: $1" },
+  { pattern: /^投递于 (.+)$/, "zh-TW": "投遞於 $1", en: "Delivered at $1" },
+  { pattern: /^尝试次数：(\d+)$/, "zh-TW": "嘗試次數：$1", en: "Attempts: $1" },
+  { pattern: /^已分别发送 (\d+) 封邮件$/, "zh-TW": "已分別傳送 $1 封郵件", en: "Sent $1 messages separately" },
+  { pattern: /^已定时发送 (.+)$/, "zh-TW": "已定時傳送 $1", en: "Scheduled for $1" },
+  { pattern: /^草稿已保存 (.+)$/, "zh-TW": "草稿已儲存 $1", en: "Draft saved $1" },
+  { pattern: /^发送时间：(.+)$/, "zh-TW": "傳送時間：$1", en: "Send time: $1" },
+  { pattern: /^当前单个附件上限 (.+)$/, "zh-TW": "目前單個附件上限 $1", en: "Current per-attachment limit: $1" },
+  { pattern: /^(\d+)分钟$/, "zh-TW": "$1分鐘", en: "$1 min" },
+  { pattern: /^(\d+)分钟前$/, "zh-TW": "$1分鐘前", en: "$1 min before" },
+  { pattern: /^(\d+) 分钟后$/, "zh-TW": "$1 分鐘後", en: "In $1 min" },
+  { pattern: /^(\d+)小时$/, "zh-TW": "$1小時", en: "$1 hr" },
+  { pattern: /^(\d+)小时前$/, "zh-TW": "$1小時前", en: "$1 hr before" },
+  { pattern: /^(\d+) 小时后$/, "zh-TW": "$1 小時後", en: "In $1 hr" },
+  { pattern: /^(\d+)天$/, "zh-TW": "$1天", en: "$1 day" },
+  { pattern: /^(\d+)天前$/, "zh-TW": "$1天前", en: "$1 day before" },
+  { pattern: /^(.+)前$/, "zh-TW": "$1前", en: "$1 before" },
+]
+
+export function translateUiText(value: string, language: Language): string {
+  if (language === "zh-CN" || !value) return value
+  const match = value.match(/^(\s*)([\s\S]*?)(\s*)$/)
+  const leading = match?.[1] || ""
+  const text = match?.[2] || value
+  const trailing = match?.[3] || ""
+  if (!text) return value
+  const translated = translateCore(text, language)
+  return `${leading}${translated}${trailing}`
+}
+
+function translateCore(text: string, language: Exclude<Language, "zh-CN">): string {
+  const exact = exactTranslations[text]
+  if (exact) return exact[language]
+  for (const rule of templateTranslations) {
+    if (rule.pattern.test(text)) return text.replace(rule.pattern, rule[language])
+  }
+  return text
+}
+
+const textSources = new WeakMap<Text, string>()
+const textLastApplied = new WeakMap<Text, string>()
+const attrSources = new WeakMap<Element, Partial<Record<string, string>>>()
+const attrLastApplied = new WeakMap<Element, Partial<Record<string, string>>>()
+const translatableAttributes = ["placeholder", "title", "aria-label"] as const
+let translateTimer: number | undefined
+
+export function LanguageDomSync() {
+  const [language] = useLanguage()
+  React.useEffect(() => {
+    document.documentElement.lang = languageOptions.find((item) => item.value === language)?.htmlLang || language
+    scheduleLocalize(language)
+    const observer = new MutationObserver(() => scheduleLocalize(language))
+    observer.observe(document.documentElement, { childList: true, subtree: true, characterData: true, attributes: true, attributeFilter: [...translatableAttributes] })
+    return () => {
+      observer.disconnect()
+      if (translateTimer) window.clearTimeout(translateTimer)
+    }
+  }, [language])
+  return null
+}
+
+function scheduleLocalize(language: Language) {
+  if (typeof window === "undefined") return
+  if (translateTimer) window.clearTimeout(translateTimer)
+  translateTimer = window.setTimeout(() => localizeDocument(language), 0)
+}
+
+function localizeDocument(language: Language) {
+  if (!document.body) return
+  localizeElement(document.body, language)
+}
+
+function localizeElement(root: Element, language: Language) {
+  if (shouldSkipElement(root)) return
+  localizeAttributes(root, language)
+  for (const child of Array.from(root.childNodes)) {
+    if (child.nodeType === Node.TEXT_NODE) localizeTextNode(child as Text, language)
+    else if (child.nodeType === Node.ELEMENT_NODE) localizeElement(child as Element, language)
+  }
+}
+
+function localizeTextNode(node: Text, language: Language) {
+  if (!node.parentElement || shouldSkipElement(node.parentElement)) return
+  const current = node.textContent || ""
+  if (!current.trim()) return
+  let source = textSources.get(node)
+  const last = textLastApplied.get(node)
+  if (!source || (last !== undefined && current !== last && shouldTranslate(current))) {
+    source = current
+    textSources.set(node, source)
+  }
+  if (!source || !shouldTranslate(source)) return
+  const next = translateUiText(source, language)
+  textLastApplied.set(node, next)
+  if (current !== next) node.textContent = next
+}
+
+function localizeAttributes(element: Element, language: Language) {
+  if (shouldSkipElement(element)) return
+  for (const attr of translatableAttributes) {
+    const current = element.getAttribute(attr)
+    if (!current || !current.trim()) continue
+    let sources = attrSources.get(element)
+    if (!sources) {
+      sources = {}
+      attrSources.set(element, sources)
+    }
+    let applied = attrLastApplied.get(element)
+    if (!applied) {
+      applied = {}
+      attrLastApplied.set(element, applied)
+    }
+    if (!sources[attr] || (applied[attr] !== undefined && current !== applied[attr] && shouldTranslate(current))) sources[attr] = current
+    const source = sources[attr]
+    if (!source || !shouldTranslate(source)) continue
+    const next = translateUiText(source, language)
+    applied[attr] = next
+    if (current !== next) element.setAttribute(attr, next)
+  }
+}
+
+function shouldSkipElement(element: Element) {
+  const tag = element.tagName.toLowerCase()
+  if (["script", "style", "code", "pre", "textarea", "option"].includes(tag)) return true
+  return Boolean(element.closest("[data-lanqin-i18n-ignore], [contenteditable='true'], .ProseMirror"))
+}
+
+function shouldTranslate(value: string) {
+  const text = value.trim()
+  if (!text) return false
+  return Boolean(exactTranslations[text]) || templateTranslations.some((rule) => rule.pattern.test(text))
+}

apps/web/src/main.tsx

@@ -3,6 +3,7 @@ import ReactDOM from "react-dom/client"
 import { QueryClient, QueryClientProvider } from "@tanstack/react-query"
 import { Navigate, RouterProvider, createBrowserRouter } from "react-router-dom"
 import { Toaster } from "@/components/ui/toaster"
+import { LanguageDomSync } from "@/lib/language"
 import { ProtectedLayout } from "@/components/protected-layout"
 import { AdminOnly } from "@/components/admin-only"
 import { LoginPage } from "@/pages/login"
@@ -32,6 +33,7 @@ ReactDOM.createRoot(document.getElementById("root")!).render(
     <QueryClientProvider client={queryClient}>
       <RouterProvider router={router} />
       <Toaster />
+      <LanguageDomSync />
     </QueryClientProvider>
   </React.StrictMode>,
 )

apps/web/src/pages/login.tsx

@@ -21,7 +21,7 @@ export function LoginPage() {
   const login = useMutation({
     mutationFn: (form: FormData) => challengeToken
       ? api.login({ challengeToken, twoFactorCode: String(form.get("twoFactorCode") || "") })
-      : api.login({ email: String(form.get("email") || ""), password: String(form.get("password") || ""), turnstileToken }),
+      : api.login({ loginName: String(form.get("loginName") || ""), password: String(form.get("password") || ""), turnstileToken }),
     onSuccess: async (data) => {
       if (data.twoFactorRequired && data.challengeToken) {
         setChallengeToken(data.challengeToken)
@@ -38,7 +38,7 @@ export function LoginPage() {
     <div className="flex min-h-screen items-center justify-center bg-muted/20 px-4 py-10">
       <div className="w-full max-w-[420px]">
         <div className="mb-7 text-center">
-          <h1 className="text-3xl font-semibold tracking-tight">LanQin Email</h1>
+          <h1 className="text-3xl font-semibold tracking-tight">NewSzxcn 邮箱</h1>
         </div>
         <div className="rounded-lg border bg-background p-6 shadow-sm sm:p-7">
           <div className="mb-6 flex items-center gap-2 text-sm font-medium text-muted-foreground">
@@ -49,8 +49,8 @@ export function LoginPage() {
             {!challengeToken ? (
               <>
                 <div className="space-y-2">
-                  <Label htmlFor="email" className="text-sm font-medium">邮箱</Label>
-                  <Input id="email" name="email" type="email" autoComplete="username" required className="h-11 text-base" />
+                  <Label htmlFor="loginName" className="text-sm font-medium">登录名</Label>
+                  <Input id="loginName" name="loginName" type="text" autoComplete="username" required className="h-11 text-base" />
                 </div>
                 <div className="space-y-2">
                   <Label htmlFor="password" className="text-sm font-medium">密码</Label>
@@ -85,4 +85,3 @@ export function LoginPage() {
     </div>
   )
 }
-

apps/web/src/pages/register.tsx

@@ -65,7 +65,7 @@ export function RegisterPage() {
     <div className="flex min-h-screen items-center justify-center bg-muted/20 px-4 py-10">
       <div className="w-full max-w-[420px]">
         <div className="mb-7 text-center">
-          <h1 className="text-3xl font-semibold tracking-tight">LanQin Email</h1>
+          <h1 className="text-3xl font-semibold tracking-tight">NewSzxcn 邮箱</h1>
         </div>
         <div className="rounded-lg border bg-background p-6 shadow-sm sm:p-7">
           <div className="mb-6 flex items-center gap-2 text-sm font-medium text-muted-foreground">

deploy/.env.example

@@ -7,14 +7,27 @@
 # =========================
 # 单容器部署镜像。默认使用你的 GHCR 镜像。
 # 本地源码构建请用：docker compose -f docker-compose.yml -f docker-compose.build.yml up -d --build
-LANQIN_IMAGE=ghcr.io/lanqin996/lanqin-email:latest
+LANQIN_IMAGE=ghcr.io/zxyszx/newszxcn-email:latest
 
 # 多容器调试版镜像。只在 docker-compose.stack.yml 中使用。
-LANQIN_API_IMAGE=ghcr.io/lanqin996/lanqin-email-api:latest
-LANQIN_WEB_IMAGE=ghcr.io/lanqin996/lanqin-email-web:latest
-LANQIN_POSTFIX_IMAGE=ghcr.io/lanqin996/lanqin-email-postfix:latest
-LANQIN_DOVECOT_IMAGE=ghcr.io/lanqin996/lanqin-email-dovecot:latest
-LANQIN_RSPAMD_IMAGE=ghcr.io/lanqin996/lanqin-email-rspamd:latest
+LANQIN_API_IMAGE=ghcr.io/zxyszx/newszxcn-email-api:latest
+LANQIN_WEB_IMAGE=ghcr.io/zxyszx/newszxcn-email-web:latest
+LANQIN_POSTFIX_IMAGE=ghcr.io/zxyszx/newszxcn-email-postfix:latest
+LANQIN_DOVECOT_IMAGE=ghcr.io/zxyszx/newszxcn-email-dovecot:latest
+LANQIN_RSPAMD_IMAGE=ghcr.io/zxyszx/newszxcn-email-rspamd:latest
+
+# 后台“立即更新”使用的内部鉴权令牌。一键安装会自动生成，请勿对外公开。
+# 手动部署可执行：openssl rand -hex 24
+LANQIN_UPDATE_TOKEN=
+
+# 可选端口绑定。使用宿主机反向代理时，可将 HTTP 设为 127.0.0.1:8088。
+LANQIN_HTTP_BIND=80
+LANQIN_HTTPS_BIND=443
+LANQIN_SMTP_BIND=25
+LANQIN_SMTPS_BIND=465
+LANQIN_SUBMISSION_BIND=587
+LANQIN_IMAPS_BIND=993
+LANQIN_POP3S_BIND=995
 
 # =========================
 # 对外访问地址
@@ -35,8 +48,9 @@ LANQIN_TLS_KEY_FILE=
 # =========================
 # 初始管理员
 # =========================
-# 第一次启动时会创建这个管理员账号。
-LANQIN_ADMIN_EMAIL=admin@example.com
+# 第一次启动时只创建管理员账号，不会自动创建同名邮箱或域名。
+# 登录名不能使用邮箱地址，之后可在后台“账号”中修改。
+LANQIN_ADMIN_USERNAME=admin
 
 # 生产环境必须改掉默认密码。
 LANQIN_ADMIN_PASSWORD=ChangeMe123!
@@ -97,6 +111,16 @@ LANQIN_SMTP_PASSWORD=
 # 外部 SMTP 要求 STARTTLS / TLS 时改 true；本机 Postfix 默认 false。
 LANQIN_SMTP_REQUIRE_TLS=false
 
+# 开放 API 最终投递事件回调的 HMAC-SHA256 密钥。生产环境请使用高强度随机值。
+# 未配置时 /api/open/v1/delivery-events 返回 503。
+LANQIN_DELIVERY_WEBHOOK_SECRET=
+
+# 可选：把发送队列与最终投递状态主动推送给外部系统。URL 默认必须为公网 HTTPS。
+LANQIN_STATUS_WEBHOOK_URL=
+LANQIN_STATUS_WEBHOOK_SECRET=
+# 仅可信内网或本地测试可开启；开启后也允许 HTTP 与私网目标。
+LANQIN_STATUS_WEBHOOK_ALLOW_PRIVATE_HOSTS=false
+
 # 第三方客户端 SMTP 提交，由 LanQin API 监听 587/465；启用前必须配置可读 TLS 证书。
 LANQIN_SUBMISSION_ADDR=
 LANQIN_SUBMISSION_TLS_ADDR=
@@ -132,9 +156,28 @@ LANQIN_MAIL_AUTO_REFRESH=true
 # 自动刷新间隔，单位：秒。
 LANQIN_MAIL_REFRESH_SECONDS=30
 
+# 是否启用外部 IMAP 接入。也可在后台“系统设置 > 外部 IMAP”里开启，默认关闭。
+LANQIN_EXTERNAL_IMAP_ENABLED=false
+
+# 外部 IMAP 密码加密密钥。启用外部 IMAP 接入前必须设置为足够长的随机字符串；也可在后台“系统设置 > 外部 IMAP”里配置。
+LANQIN_EXTERNAL_IMAP_SECRET_KEY=
+
+# 外部 IMAP 本地存储模式的后台同步间隔，单位：秒；也可在后台配置。
+LANQIN_EXTERNAL_IMAP_SYNC_SECONDS=300
+
+# 是否允许用户配置 localhost / 内网 / link-local IMAP 主机。默认 false，避免 SSRF 风险；也可在后台配置。
+LANQIN_EXTERNAL_IMAP_ALLOW_PRIVATE_HOSTS=false
+
+# Gmail 外部 IMAP OAuth2。也可在后台配置。回调地址：${LANQIN_PUBLIC_BASE_URL}/api/external-imap-oauth/gmail/callback
+LANQIN_EXTERNAL_IMAP_GMAIL_CLIENT_ID=
+LANQIN_EXTERNAL_IMAP_GMAIL_CLIENT_SECRET=
+
+# Microsoft 365 / Outlook 外部 IMAP OAuth2。也可在后台配置。回调地址：${LANQIN_PUBLIC_BASE_URL}/api/external-imap-oauth/outlook/callback
+LANQIN_EXTERNAL_IMAP_OUTLOOK_CLIENT_ID=
+LANQIN_EXTERNAL_IMAP_OUTLOOK_CLIENT_SECRET=
+
 # =========================
 # 系统
 # =========================
 # 容器时区。
 TZ=Asia/Shanghai
-

deploy/README.md

@@ -1,4 +1,23 @@
-# LanQin Email Docker 部署说明
+# NewSzxcn Email Docker 部署说明
+
+## 一键安装与更新
+
+推荐直接使用仓库根目录的管理脚本：
+
+```bash
+curl -fsSL https://raw.githubusercontent.com/zxyszx/NewSzxcn-Email/main/install.sh | sudo bash
+```
+
+后续操作：
+
+```bash
+sudo newszxcn-email update
+sudo newszxcn-email status
+sudo newszxcn-email logs
+sudo newszxcn-email rollback
+```
+
+一键安装会把配置和数据放在 `/opt/newszxcn-email`，并部署内部 Watchtower 更新服务。该服务不映射公网端口，仅接受带随机令牌的容器内请求；后台“立即更新”也只允许超级管理员执行。
 
 ## 最简单部署：单容器镜像版
 
@@ -7,7 +26,7 @@
 ```bash
 cd deploy
 cp .env.example .env
-# 修改 LANQIN_PUBLIC_HOSTNAME / LANQIN_PUBLIC_BASE_URL / LANQIN_ADMIN_EMAIL / LANQIN_ADMIN_PASSWORD
+# 修改 LANQIN_PUBLIC_HOSTNAME / LANQIN_PUBLIC_BASE_URL / LANQIN_ADMIN_USERNAME / LANQIN_ADMIN_PASSWORD
 docker compose pull
 docker compose up -d
 ```
@@ -55,12 +74,12 @@ docker compose down
 默认镜像：
 
 ```text
-ghcr.io/lanqin996/lanqin-email:latest
-ghcr.io/lanqin996/lanqin-email-api:latest
-ghcr.io/lanqin996/lanqin-email-web:latest
-ghcr.io/lanqin996/lanqin-email-postfix:latest
-ghcr.io/lanqin996/lanqin-email-dovecot:latest
-ghcr.io/lanqin996/lanqin-email-rspamd:latest
+ghcr.io/zxyszx/newszxcn-email:latest
+ghcr.io/zxyszx/newszxcn-email-api:latest
+ghcr.io/zxyszx/newszxcn-email-web:latest
+ghcr.io/zxyszx/newszxcn-email-postfix:latest
+ghcr.io/zxyszx/newszxcn-email-dovecot:latest
+ghcr.io/zxyszx/newszxcn-email-rspamd:latest
 ```
 
 如果拉取时报：
@@ -129,11 +148,20 @@ docker compose -f docker-compose.stack.yml -f docker-compose.stack.build.yml up
 - Go API 是 Webmail 和管理后台入口；浏览器不直接连接 SMTP/IMAP/POP3。
 - Go API 会读取 `LANQIN_MAILDIR_ROOT=/var/mail/vhosts`，周期扫描 Maildir，把 Postfix/Dovecot 入站邮件同步成 Webmail 索引。
 - 第三方客户端可通过 LanQin API 提供的 SMTP `465/587` 发信；Webmail/API 和第三方客户端的“已发送”都由 API 写入，外发投递进入发送队列并由 API worker relay/retry，客户端后续 IMAP APPEND 到 Sent 会按 `Message-ID` 去重。
+- 用户可在个人邮箱管理中接入外部 IMAP 账号；默认关闭，可在后台“系统设置 > 外部 IMAP”开启并配置密钥/OAuth。本地存储模式会同步到 LanQin，远端直连模式每次从远端读取。启用前必须配置外部 IMAP 密码加密密钥，默认不允许连接 localhost / 内网 / link-local IMAP 主机。Gmail / Microsoft 365 / Outlook OAuth2 需要在对应控制台配置回调地址：`/api/external-imap-oauth/gmail/callback` 或 `/api/external-imap-oauth/outlook/callback`。
 - send-as v1 支持本人邮箱、启用的别名转发 source 指向本人邮箱，或数据库表 `send_as_grants` 中显式授权的地址。
 
 ## 邮件客户端 TLS 证书
 
 Web 站点可以由宿主机 Nginx / 宝塔反代到容器 `80`，但 SMTP/IMAP/POP3 端口不会使用 Web 反代的证书。
+此时可在 `.env` 调整 Web 端口绑定，避免与宿主机 Nginx 的 `80/443` 冲突：
+
+```dotenv
+LANQIN_HTTP_BIND=127.0.0.1:8088
+LANQIN_HTTPS_BIND=127.0.0.1:8443
+```
+
+宿主机 Nginx 再反向代理到 `http://127.0.0.1:8088`。不使用宿主机反向代理时保留默认的 `80` 与 `443` 即可。
 如果第三方客户端连接 `993/995` 时提示证书是 `localhost`，说明 Dovecot 仍在使用容器自带的测试证书。LanQin API 的 SMTP `465/587` submission 不会使用自签测试证书；启用前必须配置可读的真实证书。
 
 生产环境请把域名证书挂载进容器，并在 `.env` 指向证书文件：
@@ -173,6 +201,24 @@ LANQIN_SMTP_PORT=25
 LANQIN_SMTP_REQUIRE_TLS=false
 ```
 
+如需把上游服务商或 DSN 处理器的最终送达、退信、投诉、拒收事件写回开放 API，请设置：
+
+```env
+LANQIN_DELIVERY_WEBHOOK_SECRET=replace-with-a-long-random-secret
+```
+
+回调地址、签名算法和事件格式见仓库中的 `docs/API.md` 与 `docs/openapi.json`。该接口未配置密钥时返回 `503`。
+
+如需把状态变化主动推送到集成方，可额外设置：
+
+```env
+LANQIN_STATUS_WEBHOOK_URL=https://integration.example.com/hooks/lanqin
+LANQIN_STATUS_WEBHOOK_SECRET=replace-with-another-long-random-secret
+LANQIN_STATUS_WEBHOOK_ALLOW_PRIVATE_HOSTS=false
+```
+
+事件先写入 SQLite outbox，再由后台 worker 投递；非 2xx 响应会按退避策略重试，最多 10 次。默认只允许公网 HTTPS，禁止重定向、URL 用户信息和私网/本机目标。只有可信内网或本地测试才应开启 `LANQIN_STATUS_WEBHOOK_ALLOW_PRIVATE_HOSTS`。
+
 Split stack 使用 `docker-compose.stack.yml` 时，API 容器默认会把 `LANQIN_SMTP_HOST` 覆盖为 `postfix`，让 Webmail 和 SMTP 提交都 relay 到 Postfix service。只有改用外部 SMTP 时才需要在 `.env` 明确填写 `LANQIN_STACK_SMTP_HOST` / `LANQIN_STACK_SMTP_PORT`。
 
 如果发送队列里出现 relay 失败，通常是 Postfix 会话被中断或外部 SMTP 配置错误。优先检查：
@@ -193,4 +239,3 @@ docker compose logs --tail=200 lanqin-email
 - 建议在服务器或边缘网关配置 HTTPS。
 - 云厂商通常默认封禁 25 端口，需要单独申请解封。
 - SQLite 适合 V1 单机部署；多节点部署前迁移到 PostgreSQL，并把 Postfix/Dovecot maps 改为 PostgreSQL。
-

deploy/all-in-one/Dockerfile

@@ -6,9 +6,13 @@ COPY apps/api/go.mod apps/api/go.sum ./
 RUN --mount=type=cache,target=/go/pkg/mod \
     go mod download
 COPY apps/api ./
+ARG APP_VERSION="dev"
+ARG APP_COMMIT=""
 RUN --mount=type=cache,target=/go/pkg/mod \
     --mount=type=cache,target=/root/.cache/go-build \
-    CGO_ENABLED=0 GOOS=linux go build -trimpath -o /out/lanqin-api ./cmd/server
+    CGO_ENABLED=0 GOOS=linux go build -trimpath \
+      -ldflags "-s -w -X lanqin-email-api/internal/app.BuildVersion=${APP_VERSION} -X lanqin-email-api/internal/app.BuildCommit=${APP_COMMIT}" \
+      -o /out/lanqin-api ./cmd/server
 
 FROM node:20-bookworm-slim AS web-build
 WORKDIR /src
@@ -16,7 +20,7 @@ COPY pnpm-lock.yaml pnpm-workspace.yaml ./
 COPY apps/web/package.json apps/web/package.json
 RUN corepack enable && corepack prepare pnpm@10.28.2 --activate
 RUN --mount=type=cache,target=/root/.local/share/pnpm/store \
-    pnpm install --frozen-lockfile --filter lanqin-email-web...
+    pnpm install --frozen-lockfile --filter newszxcn-email-web...
 COPY apps/web apps/web
 ARG VITE_APP_VERSION=""
 ARG VITE_RELEASE_URL=""

deploy/all-in-one/nginx.conf

@@ -17,7 +17,17 @@ server {
     proxy_pass http://127.0.0.1:8080/healthz;
   }
 
+  location = /index.html {
+    add_header Cache-Control "no-store, no-cache, must-revalidate" always;
+  }
+
+  location /assets/ {
+    add_header Cache-Control "public, max-age=31536000, immutable" always;
+    try_files $uri =404;
+  }
+
   location / {
+    add_header Cache-Control "no-store, no-cache, must-revalidate" always;
     try_files $uri $uri/ /index.html;
   }
 }

deploy/api.Dockerfile

@@ -6,9 +6,13 @@ COPY apps/api/go.mod apps/api/go.sum ./
 RUN --mount=type=cache,target=/go/pkg/mod \
     go mod download
 COPY apps/api ./
+ARG APP_VERSION="dev"
+ARG APP_COMMIT=""
 RUN --mount=type=cache,target=/go/pkg/mod \
     --mount=type=cache,target=/root/.cache/go-build \
-    CGO_ENABLED=0 GOOS=linux go build -trimpath -o /out/lanqin-api ./cmd/server
+    CGO_ENABLED=0 GOOS=linux go build -trimpath \
+      -ldflags "-s -w -X lanqin-email-api/internal/app.BuildVersion=${APP_VERSION} -X lanqin-email-api/internal/app.BuildCommit=${APP_COMMIT}" \
+      -o /out/lanqin-api ./cmd/server
 
 FROM debian:bookworm-slim
 RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \

deploy/docker-compose.build.yml

@@ -3,3 +3,8 @@ services:
     build:
       context: ..
       dockerfile: deploy/all-in-one/Dockerfile
+      args:
+        APP_VERSION: ${LANQIN_BUILD_VERSION:-dev}
+        APP_COMMIT: ${LANQIN_BUILD_COMMIT:-local}
+        VITE_APP_VERSION: ${LANQIN_BUILD_VERSION:-dev}
+        VITE_RELEASE_URL: ${LANQIN_BUILD_RELEASE_URL:-}

deploy/docker-compose.stack.build.yml

@@ -3,11 +3,17 @@ services:
     build:
       context: ..
       dockerfile: deploy/api.Dockerfile
+      args:
+        APP_VERSION: ${LANQIN_BUILD_VERSION:-dev}
+        APP_COMMIT: ${LANQIN_BUILD_COMMIT:-local}
 
   web:
     build:
       context: ..
       dockerfile: deploy/web.Dockerfile
+      args:
+        VITE_APP_VERSION: ${LANQIN_BUILD_VERSION:-dev}
+        VITE_RELEASE_URL: ${LANQIN_BUILD_RELEASE_URL:-}
 
   postfix:
     build:

deploy/docker-compose.stack.yml

@@ -1,6 +1,6 @@
 services:
   api:
-    image: ${LANQIN_API_IMAGE:-ghcr.io/lanqin996/lanqin-email-api:latest}
+    image: ${LANQIN_API_IMAGE:-ghcr.io/zxyszx/newszxcn-email-api:latest}
     env_file: .env
     environment:
       LANQIN_SMTP_HOST: ${LANQIN_STACK_SMTP_HOST:-postfix}
@@ -23,7 +23,7 @@ services:
     restart: unless-stopped
 
   web:
-    image: ${LANQIN_WEB_IMAGE:-ghcr.io/lanqin996/lanqin-email-web:latest}
+    image: ${LANQIN_WEB_IMAGE:-ghcr.io/zxyszx/newszxcn-email-web:latest}
     restart: unless-stopped
 
   nginx:
@@ -39,7 +39,7 @@ services:
     restart: unless-stopped
 
   postfix:
-    image: ${LANQIN_POSTFIX_IMAGE:-ghcr.io/lanqin996/lanqin-email-postfix:latest}
+    image: ${LANQIN_POSTFIX_IMAGE:-ghcr.io/zxyszx/newszxcn-email-postfix:latest}
     env_file: .env
     volumes:
       - ./data:/data
@@ -54,7 +54,7 @@ services:
     restart: unless-stopped
 
   dovecot:
-    image: ${LANQIN_DOVECOT_IMAGE:-ghcr.io/lanqin996/lanqin-email-dovecot:latest}
+    image: ${LANQIN_DOVECOT_IMAGE:-ghcr.io/zxyszx/newszxcn-email-dovecot:latest}
     env_file: .env
     volumes:
       - ./data:/data
@@ -69,7 +69,7 @@ services:
     restart: unless-stopped
 
   rspamd:
-    image: ${LANQIN_RSPAMD_IMAGE:-ghcr.io/lanqin996/lanqin-email-rspamd:latest}
+    image: ${LANQIN_RSPAMD_IMAGE:-ghcr.io/zxyszx/newszxcn-email-rspamd:latest}
     env_file: .env
     volumes:
       - ./data:/data:ro

deploy/docker-compose.yml

@@ -1,19 +1,38 @@
 services:
   lanqin-email:
-    image: ${LANQIN_IMAGE:-ghcr.io/lanqin996/lanqin-email:latest}
+    image: ${LANQIN_IMAGE:-ghcr.io/zxyszx/newszxcn-email:latest}
     env_file: .env
+    environment:
+      LANQIN_UPDATE_SERVICE_URL: http://updater:8080/v1/update
+      LANQIN_UPDATE_SERVICE_TOKEN: ${LANQIN_UPDATE_TOKEN:-}
     ports:
-      - "80:80"
-      - "443:443"
-      - "25:25"
-      - "465:465"
-      - "587:587"
-      - "993:993"
-      - "995:995"
+      - "${LANQIN_HTTP_BIND:-80}:80"
+      - "${LANQIN_HTTPS_BIND:-443}:443"
+      - "${LANQIN_SMTP_BIND:-25}:25"
+      - "${LANQIN_SMTPS_BIND:-465}:465"
+      - "${LANQIN_SUBMISSION_BIND:-587}:587"
+      - "${LANQIN_IMAPS_BIND:-993}:993"
+      - "${LANQIN_POP3S_BIND:-995}:995"
     volumes:
       - ./data:/data
       - ./mail:/var/mail/vhosts
       - ./dkim:/var/lib/rspamd/dkim
       # 生产环境如需第三方客户端校验证书，请取消下面挂载，并在 .env 配置：
       # - /etc/letsencrypt:/etc/letsencrypt:ro
+    labels:
+      com.centurylinklabs.watchtower.enable: "true"
+      com.centurylinklabs.watchtower.scope: "newszxcn-email"
+    restart: unless-stopped
+
+  updater:
+    image: nickfedor/watchtower:1.20.2
+    environment:
+      WATCHTOWER_HTTP_API_TOKEN: ${LANQIN_UPDATE_TOKEN:?请在 .env 设置 LANQIN_UPDATE_TOKEN}
+    command:
+      - --http-api-update
+      - --label-enable
+      - --scope
+      - newszxcn-email
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
     restart: unless-stopped

deploy/dovecot/dovecot.conf

@@ -29,23 +29,23 @@ auth_policy_request_attributes = login=%{requested_username} remote=%{rip} proto
 namespace inbox {
   inbox = yes
   mailbox Drafts {
-    auto = create
+    auto = subscribe
     special_use = \Drafts
   }
   mailbox Sent {
-    auto = create
+    auto = subscribe
     special_use = \Sent
   }
   mailbox Trash {
-    auto = create
+    auto = subscribe
     special_use = \Trash
   }
   mailbox Archive {
-    auto = create
+    auto = subscribe
     special_use = \Archive
   }
   mailbox Spam {
-    auto = create
+    auto = subscribe
     special_use = \Junk
   }
 }

deploy/install.sh

@@ -1,34 +1,4 @@
 #!/usr/bin/env bash
-set -euo pipefail
+set -Eeuo pipefail
 
-cd "$(dirname "$0")"
-
-if ! command -v docker >/dev/null 2>&1; then
-  echo "未检测到 docker，请先安装 Docker Engine / Docker Compose。" >&2
-  exit 1
-fi
-
-if ! docker compose version >/dev/null 2>&1; then
-  echo "未检测到 docker compose，请先安装 Docker Compose v2。" >&2
-  exit 1
-fi
-
-if [ ! -f .env ]; then
-  cp .env.example .env
-  echo "已生成 deploy/.env。请先编辑域名和管理员密码："
-  echo "  LANQIN_PUBLIC_HOSTNAME"
-  echo "  LANQIN_PUBLIC_BASE_URL"
-  echo "  LANQIN_ADMIN_EMAIL"
-  echo "  LANQIN_ADMIN_PASSWORD"
-  echo
-  echo "编辑完成后再次执行：./install.sh"
-  exit 0
-fi
-
-echo "拉取镜像..."
-docker compose pull
-
-echo "启动服务..."
-docker compose up -d
-
-echo "完成。查看日志：docker compose logs -f lanqin-email"
+exec "$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)/install.sh" "$@"

deploy/nginx/web.conf

@@ -3,5 +3,15 @@ server {
   server_name _;
   root /usr/share/nginx/html;
   index index.html;
-  location / { try_files $uri $uri/ /index.html; }
+  location = /index.html {
+    add_header Cache-Control "no-store, no-cache, must-revalidate" always;
+  }
+  location /assets/ {
+    add_header Cache-Control "public, max-age=31536000, immutable" always;
+    try_files $uri =404;
+  }
+  location / {
+    add_header Cache-Control "no-store, no-cache, must-revalidate" always;
+    try_files $uri $uri/ /index.html;
+  }
 }

deploy/postfix/main.cf

@@ -13,7 +13,7 @@ virtual_alias_maps = sqlite:/etc/postfix/sqlite-aliases.cf
 virtual_transport = lmtp:inet:dovecot:24
 virtual_mailbox_base = /var/mail/vhosts
 
-smtpd_banner = $myhostname ESMTP LanQin Email
+smtpd_banner = $myhostname ESMTP NewSzxcn Email
 smtpd_relay_restrictions = permit_mynetworks, reject_unauth_destination
 smtpd_recipient_restrictions = permit_mynetworks, reject_unauth_destination
 

deploy/web.Dockerfile

@@ -6,7 +6,7 @@ COPY pnpm-lock.yaml pnpm-workspace.yaml ./
 COPY apps/web/package.json apps/web/package.json
 RUN corepack enable && corepack prepare pnpm@10.28.2 --activate
 RUN --mount=type=cache,target=/root/.local/share/pnpm/store \
-    pnpm install --frozen-lockfile --filter lanqin-email-web...
+    pnpm install --frozen-lockfile --filter newszxcn-email-web...
 COPY apps/web apps/web
 ARG VITE_APP_VERSION=""
 ARG VITE_RELEASE_URL=""

docs/API.md

@@ -0,0 +1,685 @@
+# LanQin Email API
+
+LanQin Email exposes versioned integration APIs under `/api/open/v1`. The original `/api/open` paths remain compatibility aliases.
+
+这些接口用于外部系统集成，稳定版本入口为 `/api/open/v1`。原 `/api/open` 路径继续作为兼容别名。它们不是匿名公开接口，只接受 API Token，不接受浏览器登录 Session Cookie。
+
+Machine-readable OpenAPI 3.1 contract: [`docs/openapi.json`](./openapi.json).
+
+机器可读的 OpenAPI 3.1 契约见 [`docs/openapi.json`](./openapi.json)。
+
+## Base URL
+
+All API endpoints are relative to your LanQin Email instance:
+
+所有接口地址都相对于你的 LanQin Email 实例：
+
+```
+https://your-instance.example.com
+```
+
+## HTTP Status Codes
+
+The API uses standard HTTP status codes:
+
+接口使用标准 HTTP 状态码：
+
+| Code 状态码 | Meaning 含义 |
+|------|---------|
+| `200 OK` | Request succeeded / 请求成功 |
+| `201 Created` | Resource created successfully / 资源创建成功 |
+| `400 Bad Request` | Invalid request parameters or validation error / 请求参数无效或校验失败 |
+| `401 Unauthorized` | Missing or invalid API token / 缺少或无效的 API Token |
+| `403 Forbidden` | Token lacks required permissions / Token 缺少所需权限 |
+| `404 Not Found` | Resource does not exist / 资源不存在 |
+| `409 Conflict` | Idempotency key conflict or concurrent status change / 幂等键冲突或状态并发变化 |
+| `429 Too Many Requests` | Rate limit exceeded / 超过频率限制 |
+| `500 Internal Server Error` | Server error / 服务器错误 |
+
+Validation failures — including a duplicate domain name — return `400 Bad Request`, not `409`.
+
+校验失败（包括域名重复）会返回 `400 Bad Request`，而不是 `409`。
+
+## Error Responses
+
+All API errors return JSON with this structure:
+
+所有接口的错误都以如下 JSON 结构返回：
+
+```json
+{
+  "error": "error message"
+}
+```
+
+**Important**: The API uses `DisallowUnknownFields()` for JSON parsing. Sending fields not defined in the request schema will result in a `400 Bad Request` error.
+
+**重要提示**：接口在解析 JSON 时启用了 `DisallowUnknownFields()`。如果请求体中包含 schema 未定义的字段，将返回 `400 Bad Request` 错误。
+
+Examples:
+
+示例：
+
+```json
+{
+  "error": "invalid token"
+}
+```
+
+```json
+{
+  "error": "domain not found"
+}
+```
+
+```json
+{
+  "error": "localPart is required"
+}
+```
+
+## Authentication
+
+Open API requests must use a Bearer API Token:
+
+Open API 请求必须使用 Bearer API Token：
+
+```http
+Authorization: Bearer lq_xxx
+```
+
+Create tokens in **Profile / API Token**. The plain token is shown only once after creation, so store it securely and revoke it if it may have leaked.
+
+请在 **个人中心 / API Token** 中创建 Token。明文 Token 只会在创建后显示一次，请安全保存；如果怀疑泄露，应立即撤销并重新创建。
+
+Created token example:
+
+创建后的 Token 示例：
+
+```json
+{
+  "token": "lq_xxx"
+}
+```
+
+Tokens created without a custom expiration default to 90 days. You can disable or revoke tokens from the same profile page.
+
+如果没有自定义到期时间，Token 默认 90 天后过期。你可以在同一个个人中心页面中禁用或撤销 Token。
+
+Each token has independent scopes. Scopes only reduce the permissions of the owning user; they never grant permissions the user does not already have. Existing tokens created before scope support are migrated to `*` for compatibility.
+
+每个 Token 都有独立 scope。scope 只会收缩 Token 所属用户已有的权限，不会授予用户原本没有的权限。scope 功能上线前创建的 Token 会迁移为 `*`，以保持兼容。
+
+| Scope | Purpose |
+|---|---|
+| `domains:read` / `domains:write` | View or manage sending domains |
+| `mailboxes:read` / `mailboxes:write` | View or manage mailboxes; password reset is a write operation |
+| `messages:read` / `messages:send` / `messages:manage` | Read messages/status, send, or retry/cancel |
+| `aliases:read` / `aliases:write` | View or manage aliases |
+| `dns:read` / `dns:check` | View required records or execute DNS checks |
+| `*` | Compatibility wildcard; avoid for new integrations |
+
+## Permissions
+
+All Open API endpoints require an API token with appropriate permissions and role requirements:
+
+所有 Open API 接口都需要具备相应权限和角色的 API Token：
+
+| Endpoint group | Required scope | Role |
+|---|---|---|
+| Domains | `domains:read` or `domains:write` | admin |
+| Mailboxes | `mailboxes:read` or `mailboxes:write` | admin |
+| DNS | `dns:read` or `dns:check` | admin |
+| Aliases | `aliases:read` or `aliases:write` | admin |
+| Send / status / messages | `messages:send`, `messages:read`, or `messages:manage` | user or admin |
+
+**Notes:**
+- Admin endpoints check for `requireAdminAccess` (role must be `admin`).
+- Mail sending/reading endpoints work for regular users but only for mailboxes they own.
+- Users can only read messages from their own active mailboxes.
+
+**说明：**
+- 域名和邮箱管理接口会检查 `requireAdminAccess`（角色必须为 `admin`）。
+- 发信/读信接口对普通用户也可用，但只能操作自己拥有的邮箱。
+- 用户只能读取自己拥有的 active 邮箱中的邮件。
+
+## Domains
+
+### List domains
+
+```http
+GET /api/open/v1/domains
+Authorization: Bearer lq_xxx
+```
+
+**Status:** `200 OK`
+
+**Response:**
+
+```json
+{
+  "items": [
+    {
+      "id": "dom_xxx",
+      "name": "example.com",
+      "status": "active",
+      "dkimSelector": "lanqin",
+      "dkimPublicKey": "v=DKIM1; k=rsa; p=MIIBIjANBgkq...",
+      "dnsStatus": "unchecked",
+      "dnsCheckedAt": null,
+      "createdAt": "2026-06-29T00:00:00Z"
+    }
+  ]
+}
+```
+
+**Field descriptions:**
+- `status`: `active` or `disabled`
+- `dnsStatus`: `unchecked` (initial), `ok` (all DNS records verified), or `error` (verification failed)
+- `dnsCheckedAt`: Timestamp of last DNS check (nullable)
+- `dkimPublicKey`: Public key for DKIM signing (omitted in some contexts)
+
+**字段说明：**
+- `status`：`active` 或 `disabled`
+- `dnsStatus`：`unchecked`（初始）、`ok`（所有 DNS 记录校验通过）或 `error`（校验失败）
+- `dnsCheckedAt`：上次 DNS 检查的时间戳（可为 null）
+- `dkimPublicKey`：用于 DKIM 签名的公钥（部分场景下会省略）
+
+**Note:** This endpoint returns all domains without pagination.
+
+**注意：** 该接口一次性返回所有域名，不分页。
+
+### Create domain
+
+```http
+POST /api/open/v1/domains
+Authorization: Bearer lq_xxx
+Content-Type: application/json
+
+{
+  "name": "example.com"
+}
+```
+
+**Status:** `201 Created`
+
+**Response:**
+
+```json
+{
+  "id": "dom_xxx",
+  "name": "example.com",
+  "status": "active",
+  "dkimSelector": "lanqin",
+  "dkimPublicKey": "v=DKIM1; k=rsa; p=MIIBIjANBgkq...",
+  "dnsStatus": "unchecked",
+  "dnsCheckedAt": null,
+  "createdAt": "2026-06-29T00:00:00Z"
+}
+```
+
+**Notes:**
+- Domain name is automatically normalized to lowercase
+- DKIM keys are generated automatically
+- Initial `dnsStatus` is `unchecked`
+
+**说明：**
+- 域名会自动规范化为小写
+- DKIM 密钥会自动生成
+- 初始 `dnsStatus` 为 `unchecked`
+
+### Get domain
+
+```http
+GET /api/open/v1/domains/{id}
+Authorization: Bearer lq_xxx
+```
+
+**Status:** `200 OK` or `404 Not Found`
+
+**Response:** Same as domain object in list response.
+
+**响应：** 与列表接口中的 domain 对象结构相同。
+
+### Update domain status
+
+```http
+POST /api/open/v1/domains/{id}
+Authorization: Bearer lq_xxx
+Content-Type: application/json
+
+{
+  "status": "active"
+}
+```
+
+**Status:** `200 OK` or `404 Not Found`
+
+**Request body:**
+- `status`: Must be `active` or `disabled`
+
+**请求体：**
+- `status`：必须为 `active` 或 `disabled`
+
+**Response:** Updated domain object.
+
+**响应：** 更新后的 domain 对象。
+
+**Note:** This endpoint uses `POST` (not `PATCH`/`PUT`) for simplicity in client implementations.
+
+**注意：** 该接口使用 `POST`（而非 `PATCH`/`PUT`），以简化客户端实现。
+
+### Delete domain
+
+```http
+DELETE /api/open/v1/domains/{id}
+Authorization: Bearer lq_xxx
+```
+
+**Status:** `200 OK`, `404 Not Found`, or `400 Bad Request`
+
+**Response:**
+
+```json
+{
+  "ok": true
+}
+```
+
+**Error cases:**
+- `400`: Domain still has mailboxes (must delete mailboxes first)
+- `404`: Domain not found
+
+**错误情况：**
+- `400`：域名下仍有邮箱（需先删除邮箱）
+- `404`：域名不存在
+
+## Mailboxes
+
+### List mailboxes
+
+```http
+GET /api/open/v1/mailboxes
+Authorization: Bearer lq_xxx
+```
+
+**Status:** `200 OK`
+
+**Response:**
+
+```json
+{
+  "items": [
+    {
+      "id": "mbx_xxx",
+      "userId": "usr_xxx",
+      "userEmail": "alice@example.com",
+      "domainId": "dom_xxx",
+      "localPart": "alice",
+      "address": "alice@example.com",
+      "displayName": "Alice",
+      "quotaMb": 1024,
+      "status": "active",
+      "createdAt": "2026-06-29T00:00:00Z"
+    }
+  ]
+}
+```
+
+**Note:** This endpoint returns all mailboxes without pagination.
+
+**注意：** 该接口一次性返回所有邮箱，不分页。
+
+### Create mailbox
+
+```http
+POST /api/open/v1/mailboxes
+Authorization: Bearer lq_xxx
+Content-Type: application/json
+
+{
+  "domainId": "dom_xxx",
+  "localPart": "alice",
+  "displayName": "Alice",
+  "password": "Password123!",
+  "quotaMb": 1024,
+  "ownerEmail": "alice@example.com"
+}
+```
+
+**Status:** `201 Created`
+
+**Request fields:**
+
+| Field 字段 | Required 必填 | Description 说明 |
+|-------|----------|-------------|
+| `domainId` | Yes | ID of an existing domain / 已存在域名的 ID |
+| `localPart` | Yes | Local part of the address. Normalized to lowercase; only `a-z 0-9 . _ % + -` are kept, other characters stripped / 地址本地部分。会规范化为小写，仅保留 `a-z 0-9 . _ % + -`，其余字符会被移除 |
+| `password` | Yes | At least 8 characters. Used as the mailbox password / 至少 8 位，用作邮箱密码 |
+| `displayName` | No | Defaults to the mailbox address if omitted / 省略时默认使用邮箱地址 |
+| `quotaMb` | No | Mailbox quota in MB / 邮箱配额（MB） |
+| `ownerEmail` | No | Owner's email. See owner resolution below / 拥有者邮箱，见下方拥有者解析规则 |
+| `userId` | No | Bind to an existing user by ID. Takes precedence over `ownerEmail` / 绑定到已有用户的 ID，优先级高于 `ownerEmail` |
+
+**Owner resolution:**
+- If `userId` is provided, the mailbox is bound to that existing user (must be an active user).
+- Otherwise, if `ownerEmail` is provided, LanQin Email looks up an active user with that email.
+- If `ownerEmail` is omitted, the mailbox address is used as the owner email.
+- If no active user with that email exists, a new user is created automatically.
+
+**拥有者解析规则：**
+- 如果传了 `userId`，邮箱会绑定到该已有用户（必须是启用状态的用户）。
+- 否则，如果传了 `ownerEmail`，系统会查找该邮箱对应的启用用户。
+- 如果省略 `ownerEmail`，则使用邮箱地址作为拥有者邮箱。
+- 如果不存在对应的启用用户，系统会自动创建一个新用户。
+
+**Response:** Created mailbox object (same shape as list response).
+
+**响应：** 创建后的 mailbox 对象（结构与列表接口相同）。
+
+### Get mailbox
+
+```http
+GET /api/open/v1/mailboxes/{id}
+Authorization: Bearer lq_xxx
+```
+
+**Status:** `200 OK` or `404 Not Found`
+
+**Response:** Mailbox object (same shape as list response).
+
+**响应：** mailbox 对象（结构与列表接口相同）。
+
+### Update mailbox
+
+```http
+POST /api/open/v1/mailboxes/{id}
+Authorization: Bearer lq_xxx
+Content-Type: application/json
+
+{
+  "displayName": "Alice Work",
+  "quotaMb": 2048,
+  "status": "active",
+  "userId": "usr_xxx"
+}
+```
+
+**Status:** `200 OK` or `404 Not Found`
+
+All fields are optional. Omitted (or empty / non-positive) fields keep their current value. `status` can be `active` or `disabled`. When `userId` is provided, the target user must exist and be active.
+
+所有字段均可选。省略（或为空 / 非正数）的字段会保留原值。`status` 可为 `active` 或 `disabled`。如果传了 `userId`，目标用户必须存在且处于启用状态。
+
+**Response:** Updated mailbox object.
+
+**响应：** 更新后的 mailbox 对象。
+
+### Delete mailbox
+
+```http
+DELETE /api/open/v1/mailboxes/{id}
+Authorization: Bearer lq_xxx
+```
+
+**Status:** `200 OK`, `404 Not Found`, or `400 Bad Request`
+
+**Response:**
+
+```json
+{
+  "ok": true
+}
+```
+
+**Notes:**
+- Deleting a mailbox also deletes all of its messages.
+- If the token owner is deleting their own mailbox, it cannot be their last remaining mailbox (returns `400`).
+
+**说明：**
+- 删除邮箱会同时删除该邮箱下的所有邮件。
+- 如果 Token 拥有者删除的是自己的邮箱，则不能删除最后一个邮箱（会返回 `400`）。
+
+## Send Mail
+
+```http
+POST /api/open/v1/send
+Authorization: Bearer lq_xxx
+Idempotency-Key: invoice-2026-0001
+Content-Type: application/json
+
+{
+  "mailboxId": "mbx_xxx",
+  "to": ["bob@example.com"],
+  "cc": [],
+  "bcc": [],
+  "subject": "Hello",
+  "text": "Plain text body",
+  "html": "<p>HTML body</p>",
+  "attachments": [
+    {
+      "filename": "report.pdf",
+      "contentType": "application/pdf",
+      "contentBase64": "JVBERi0xLjQK..."
+    }
+  ]
+}
+```
+
+**Status:** `201 Created`
+
+**Request fields:**
+
+| Field 字段 | Required 必填 | Description 说明 |
+|-------|----------|-------------|
+| `mailboxId` | Yes | Sending mailbox ID (must be owned by the token user) / 发信邮箱 ID（必须属于 Token 拥有者） |
+| `to` | Yes | Recipient addresses (at least one recipient across to/cc/bcc) / 收件人地址（to/cc/bcc 至少需有一个收件人） |
+| `cc` | No | CC addresses / 抄送地址 |
+| `bcc` | No | BCC addresses / 密送地址 |
+| `subject` | No | Message subject / 邮件主题 |
+| `text` | No | Plain text body / 纯文本正文 |
+| `html` | No | HTML body / HTML 正文 |
+| `attachments` | No | List of attachments (see below) / 附件列表（见下方） |
+
+**Attachment fields:**
+
+| Field 字段 | Description 说明 |
+|-------|-------------|
+| `filename` | Attachment file name / 附件文件名 |
+| `contentType` | MIME type, e.g. `application/pdf` / MIME 类型，如 `application/pdf` |
+| `contentBase64` | Base64-encoded file content / Base64 编码的文件内容 |
+
+Total attachment size is limited by the sender's permission group (`maxAttachmentMb`, default 25 MB). Exceeding it returns `400`.
+
+附件总大小受发信人所在权限组限制（`maxAttachmentMb`，默认 25 MB）。超出会返回 `400`。
+
+**Response:**
+
+```json
+{
+  "id": "mail_xxx",
+  "queueId": "snd_xxx",
+  "status": "queued",
+  "messageId": "mail_xxx",
+  "rfcMessageId": "<msg_xxx@example.com>",
+  "mailboxId": "mbx_xxx",
+  "mailboxAddress": "alice@example.com",
+  "subject": "Hello",
+  "recipients": ["bob@example.com"],
+  "attemptCount": 0,
+  "maxAttempts": 5,
+  "createdAt": "2026-06-29T00:00:00Z"
+}
+```
+
+**Response fields:**
+
+| Field 字段 | Description 说明 |
+|-------|-------------|
+| `id` | Send identifier; use it with `GET /api/open/v1/send/{id}` / 发信标识，可配合 `GET /api/open/v1/send/{id}` 使用 |
+| `queueId` | SMTP queue item id. Omitted when the message was only `accepted` / SMTP 队列项 ID；仅 `accepted` 时不返回 |
+| `status` | Delivery status, see values below / 投递状态，见下方取值 |
+| `messageId` | Internal stored message id / 内部存储的消息 ID |
+| `rfcMessageId` | RFC 5322 `Message-ID` header / RFC 5322 的 `Message-ID` 头 |
+| `mailboxAddress` | Sending mailbox address / 发信邮箱地址 |
+| `recipients` | Deduplicated recipients (to + cc + bcc) / 去重后的收件人（to + cc + bcc） |
+| `attemptCount` / `maxAttempts` | Delivery attempt counters (queue only) / 投递尝试次数（仅队列项返回） |
+| `nextAttemptAt` / `lastError` | Next retry time / last delivery error (present when applicable) / 下次重试时间 / 最近一次投递错误（在适用时返回） |
+| `updatedAt` / `deliveredAt` | Update / delivery timestamps (present when applicable) / 更新 / 投递时间戳（在适用时返回） |
+
+When SMTP delivery is not configured, the message can be stored as accepted without a queue item:
+
+如果没有配置 SMTP 投递，邮件可能只会进入 `accepted` 状态，不会产生 `queueId`。
+
+`id` is always the stable stored send id (`mail_*`). `queueId` is the queue item (`snd_*`) and may be absent. A repeated request with the same `Idempotency-Key` and identical body returns the original send with `200` and `Idempotency-Replayed: true`; reusing the key with a different body returns `409`. Keys are retained for 24 hours.
+
+`id` 始终是稳定的发送邮件 ID（`mail_*`）；`queueId` 是队列项 ID（`snd_*`），可能不存在。相同 `Idempotency-Key` 与相同请求体重试时返回原发送结果、状态码 `200`，并带 `Idempotency-Replayed: true`；相同 key 配不同请求体返回 `409`。key 保留 24 小时。
+
+Current status values:
+
+当前状态取值：
+
+- `accepted`: message was accepted and stored, but no SMTP queue item exists.
+- `queued`: queued for SMTP delivery.
+- `sending`: currently being delivered.
+- `relayed`: the configured upstream SMTP server accepted the message; this is not final recipient delivery.
+- `failed`: delivery failed and may be retried.
+- `canceled`: delivery was canceled.
+- `delivered`, `bounced`, `complained`, `rejected`, `deferred`: final per-recipient provider/DSN event.
+- `partial`: final events currently differ between recipients or only cover part of the recipient list.
+
+<br>
+
+- `accepted`：邮件已被接受并存储，但没有 SMTP 队列项。
+- `queued`：已进入 SMTP 投递队列。
+- `sending`：正在投递中。
+- `relayed`：配置的上游 SMTP 已接受邮件，但这不代表最终收件成功。
+- `failed`：投递失败，可能会重试。
+- `canceled`：投递已取消。
+- `delivered`、`bounced`、`complained`、`rejected`、`deferred`：每个收件人的最终供应商或 DSN 事件。
+- `partial`：不同收件人的最终状态不同，或当前只收到了部分收件人的事件。
+
+**Error cases:**
+
+| Status 状态码 | Cause 原因 |
+|--------|-------|
+| `400` | No recipients / invalid MIME / attachment too large / 无收件人、MIME 无效或附件过大 |
+| `403` | Sender address is not authorized / 发信地址未被授权 |
+| `404` | Mailbox not found or not owned by the token user / 邮箱不存在或不属于 Token 拥有者 |
+| `429` | SMTP send rate limit exceeded / 超过 SMTP 发信频率限制 |
+| `507` | Mailbox quota exceeded / 邮箱配额已满 |
+
+Final delivery events are exposed in `recipientStatuses` and through `GET /api/open/v1/send/{id}/events`.
+
+最终投递事件会出现在 `recipientStatuses`，完整时间线可通过 `GET /api/open/v1/send/{id}/events` 获取。
+
+## Send Status
+
+```http
+GET /api/open/v1/send/{id}
+Authorization: Bearer lq_xxx
+```
+
+**Status:** `200 OK` or `404 Not Found`
+
+`id` can be the value returned by `POST /api/open/v1/send`. If a queue item exists, it can also be the queue id.
+
+`id` 可以使用发信接口返回的 `id`；如果存在队列项，也可以使用 `queueId`。
+
+**Response:** Same shape as the `POST /api/open/v1/send` response. Only messages belonging to the token user's mailboxes are returned; otherwise `404`.
+
+**响应：** 结构与 `POST /api/open/v1/send` 的响应相同。只会返回属于 Token 拥有者邮箱的邮件，否则返回 `404`。
+
+## Received Messages
+
+```http
+GET /api/open/v1/mailboxes/{id}/messages?folder=Inbox&limit=30&cursor=opaque&q=keyword
+Authorization: Bearer lq_xxx
+```
+
+**Status:** `200 OK` or `404 Not Found`
+
+Query parameters:
+
+查询参数：
+
+- `folder`: folder name. Defaults to `Inbox`; use `all` for all folders.
+- `limit`: page size, defaults to `30`, maximum `100`.
+- `cursor`: opaque stable cursor. Pass back `nextCursor` unchanged. Numeric offsets remain accepted for compatibility.
+- `q`: optional search keyword. Matches subject, from, to, snippet, and body text.
+
+<br>
+
+- `folder`：文件夹名称。默认为 `Inbox`；使用 `all` 表示所有文件夹。
+- `limit`：每页数量，默认 `30`，最大 `100`。
+- `cursor`：数字偏移量。把上一次响应中的 `nextCursor` 传回即可获取下一页。
+- `q`：可选搜索关键词。会匹配主题、发件人、收件人、摘要和正文。
+
+Response:
+
+响应：
+
+```json
+{
+  "items": [
+    {
+      "id": "mail_xxx",
+      "mailboxId": "mbx_xxx",
+      "folder": "Inbox",
+      "messageId": "<message@example.com>",
+      "subject": "Hello",
+      "from": "sender@example.com",
+      "to": ["alice@example.com"],
+      "receivedAt": "2026-06-29T00:00:00Z",
+      "snippet": "Preview text",
+      "isRead": false,
+      "hasAttachments": false
+    }
+  ],
+  "nextCursor": ""
+}
+```
+
+`nextCursor` is empty when there are no more pages. Otherwise it contains the offset to pass as `cursor` for the next request.
+
+当没有更多分页时，`nextCursor` 为空字符串；否则应将它原样作为下一次请求的 `cursor` 传入。
+
+Users can only read messages from their own active mailboxes. Fetch message bodies and attachment metadata with `GET /api/open/v1/messages/{id}`; download an owned attachment with `GET /api/open/v1/attachments/{id}`.
+
+用户只能读取自己拥有的 active 邮箱。
+
+## Additional V1 Endpoints / 其他 V1 接口
+
+- `GET /api/open/v1/send`: paginated send records.
+- `GET /api/open/v1/send/{id}/events`: queue audit and final delivery events.
+- `POST /api/open/v1/send/{id}/retry`: retry a failed queue item.
+- `POST /api/open/v1/send/{id}/cancel`: cancel a queued or failed item.
+- `POST /api/open/v1/mailboxes/{id}/password`: reset the owner user's password and all mailbox passwords owned by that user.
+- `GET /api/open/v1/domains/{id}/dns-records` and `POST .../dns-check`: DNS configuration and check.
+- `/api/open/v1/aliases`: alias CRUD.
+
+Domain names and mailbox addresses are immutable. Renaming them requires a storage/identity migration and is intentionally not exposed as a normal update operation.
+
+域名名称和邮箱地址不可直接修改。重命名需要迁移存储路径及身份信息，因此不作为普通更新操作开放。
+
+## Delivery Event Webhook / 投递事件回调
+
+Configure `LANQIN_DELIVERY_WEBHOOK_SECRET`, then post up to 100 events to `POST /api/open/v1/delivery-events`. This endpoint does not accept an API Token. Set the Unix timestamp in `X-LanQin-Timestamp`, compute `HMAC-SHA256(secret, timestamp + "." + rawBody)`, and send the lowercase hexadecimal digest as `X-LanQin-Signature: sha256=<digest>`. Timestamps outside five minutes are rejected. `(provider, event id)` is idempotent.
+
+配置 `LANQIN_DELIVERY_WEBHOOK_SECRET` 后，可向 `POST /api/open/v1/delivery-events` 一次提交最多 100 条事件。该接口不接受 API Token。将 Unix 时间戳放入 `X-LanQin-Timestamp`，计算 `HMAC-SHA256(secret, timestamp + "." + 原始请求体)`，再以 `X-LanQin-Signature: sha256=<小写十六进制>` 发送。超过五分钟的时间戳会被拒绝；`(provider, event id)` 具备幂等性。
+
+Accepted event statuses: `delivered`, `bounced`, `complained`, `rejected`, `deferred`. Every event must identify an existing send using `queueId`, `messageId`, or `rfcMessageId`, and its recipient must belong to that send.
+
+## Outbound Status Webhook / 主动状态推送
+
+Set `LANQIN_STATUS_WEBHOOK_URL` and `LANQIN_STATUS_WEBHOOK_SECRET` to receive status changes proactively. Events are persisted in a SQLite outbox before delivery. Non-2xx responses are retried with backoff up to 10 attempts. Delivered and retry-exhausted records are removed after 30 days.
+
+设置 `LANQIN_STATUS_WEBHOOK_URL` 和 `LANQIN_STATUS_WEBHOOK_SECRET` 后，可主动接收状态变化。事件会先持久化到 SQLite outbox，非 2xx 响应会按退避策略重试，最多 10 次；已送达和重试耗尽的记录会在 30 天后清理。
+
+Outbound requests include `X-LanQin-Webhook-Id`, `X-LanQin-Timestamp`, and `X-LanQin-Signature`. Signature calculation is the same HMAC-SHA256 construction used by the inbound delivery-event endpoint: `HMAC(secret, timestamp + "." + rawBody)`. Event types include `send.accepted`, `send.queued`, `send.retry`, `send.delivered` (upstream SMTP accepted), `send.failed`, `send.canceled`, and `delivery.<final-status>`.
+
+出站请求包含 `X-LanQin-Webhook-Id`、`X-LanQin-Timestamp` 和 `X-LanQin-Signature`。签名算法与入站投递事件相同：`HMAC(secret, timestamp + "." + 原始请求体)`。事件类型包括 `send.accepted`、`send.queued`、`send.retry`、`send.delivered`（上游 SMTP 接受）、`send.failed`、`send.canceled` 和 `delivery.<最终状态>`。
+
+The target must be a public HTTPS URL by default. Redirects, URL credentials, loopback, private, link-local, and unspecified addresses are rejected. `LANQIN_STATUS_WEBHOOK_ALLOW_PRIVATE_HOSTS=true` relaxes this for explicitly trusted private deployments and also permits HTTP.
+
+目标地址默认必须是公网 HTTPS。重定向、URL 用户信息、loopback、私网、链路本地和未指定地址都会被拒绝。只有明确可信的私有部署才应设置 `LANQIN_STATUS_WEBHOOK_ALLOW_PRIVATE_HOSTS=true`；开启后也允许 HTTP。

docs/openapi.json

@@ -0,0 +1,99 @@
+{
+  "openapi": "3.1.0",
+  "info": {
+    "title": "LanQin Email Open API",
+    "version": "1.0.0",
+    "description": "Versioned integration API. The unversioned /api/open routes are compatibility aliases for /api/open/v1."
+  },
+  "servers": [{ "url": "/api/open/v1" }],
+  "security": [{ "bearerAuth": [] }],
+  "paths": {
+    "/domains": { "get": { "parameters": [{ "$ref": "#/components/parameters/Limit" }, { "$ref": "#/components/parameters/Cursor" }], "responses": { "200": { "description": "Paginated domains" } } }, "post": { "responses": { "201": { "description": "Domain created" } } } },
+    "/domains/{id}": { "parameters": [{ "$ref": "#/components/parameters/ResourceId" }], "get": { "responses": { "200": { "description": "Domain" }, "404": { "$ref": "#/components/responses/NotFound" } } }, "post": { "responses": { "200": { "description": "Domain updated" } } }, "delete": { "responses": { "200": { "description": "Domain deleted" }, "404": { "$ref": "#/components/responses/NotFound" } } } },
+    "/domains/{id}/dns-records": { "parameters": [{ "$ref": "#/components/parameters/ResourceId" }], "get": { "responses": { "200": { "description": "Required DNS records" }, "404": { "$ref": "#/components/responses/NotFound" } } } },
+    "/domains/{id}/dns-check": { "parameters": [{ "$ref": "#/components/parameters/ResourceId" }], "post": { "responses": { "200": { "description": "DNS check result" } } } },
+    "/mailboxes": { "get": { "parameters": [{ "$ref": "#/components/parameters/Limit" }, { "$ref": "#/components/parameters/Cursor" }], "responses": { "200": { "description": "Paginated mailboxes" } } }, "post": { "responses": { "201": { "description": "Mailbox created" } } } },
+    "/mailboxes/{id}": { "parameters": [{ "$ref": "#/components/parameters/ResourceId" }], "get": { "responses": { "200": { "description": "Mailbox" }, "404": { "$ref": "#/components/responses/NotFound" } } }, "post": { "responses": { "200": { "description": "Mailbox updated" } } }, "delete": { "responses": { "200": { "description": "Mailbox deleted" }, "404": { "$ref": "#/components/responses/NotFound" } } } },
+    "/mailboxes/{id}/password": { "parameters": [{ "$ref": "#/components/parameters/ResourceId" }], "post": { "responses": { "200": { "description": "Owner and mailbox passwords reset" } } } },
+    "/mailboxes/{id}/messages": { "parameters": [{ "$ref": "#/components/parameters/ResourceId" }, { "$ref": "#/components/parameters/Limit" }, { "$ref": "#/components/parameters/Cursor" }], "get": { "responses": { "200": { "description": "Paginated messages" } } } },
+    "/messages/{id}": { "parameters": [{ "$ref": "#/components/parameters/ResourceId" }], "get": { "responses": { "200": { "description": "Message detail" }, "404": { "$ref": "#/components/responses/NotFound" } } } },
+    "/attachments/{id}": { "parameters": [{ "$ref": "#/components/parameters/ResourceId" }], "get": { "responses": { "200": { "description": "Attachment bytes" }, "404": { "$ref": "#/components/responses/NotFound" } } } },
+    "/send": {
+      "get": { "parameters": [{ "$ref": "#/components/parameters/Limit" }, { "$ref": "#/components/parameters/Cursor" }], "responses": { "200": { "description": "Paginated sends" } } },
+      "post": {
+        "parameters": [{ "$ref": "#/components/parameters/IdempotencyKey" }],
+        "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/SendRequest" } } } },
+        "responses": { "200": { "description": "Idempotent replay", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/SendStatus" } } } }, "201": { "description": "Queued", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/SendStatus" } } } }, "409": { "$ref": "#/components/responses/Conflict" } }
+      }
+    },
+    "/send/{id}": { "parameters": [{ "$ref": "#/components/parameters/ResourceId" }], "get": { "responses": { "200": { "description": "Send status", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/SendStatus" } } } }, "404": { "$ref": "#/components/responses/NotFound" } } } },
+    "/send/{id}/events": { "parameters": [{ "$ref": "#/components/parameters/ResourceId" }], "get": { "responses": { "200": { "description": "Queue audit and delivery events" }, "404": { "$ref": "#/components/responses/NotFound" } } } },
+    "/send/{id}/retry": { "parameters": [{ "$ref": "#/components/parameters/ResourceId" }], "post": { "responses": { "200": { "description": "Send requeued" }, "409": { "$ref": "#/components/responses/Conflict" } } } },
+    "/send/{id}/cancel": { "parameters": [{ "$ref": "#/components/parameters/ResourceId" }], "post": { "responses": { "200": { "description": "Send canceled" }, "409": { "$ref": "#/components/responses/Conflict" } } } },
+    "/aliases": { "get": { "parameters": [{ "$ref": "#/components/parameters/Limit" }, { "$ref": "#/components/parameters/Cursor" }], "responses": { "200": { "description": "Paginated aliases" } } }, "post": { "responses": { "201": { "description": "Alias created" } } } },
+    "/aliases/{id}": { "parameters": [{ "$ref": "#/components/parameters/ResourceId" }], "get": { "responses": { "200": { "description": "Alias" }, "404": { "$ref": "#/components/responses/NotFound" } } }, "post": { "responses": { "200": { "description": "Alias updated" } } }, "delete": { "responses": { "200": { "description": "Alias deleted" }, "404": { "$ref": "#/components/responses/NotFound" } } } },
+    "/delivery-events": {
+      "post": {
+        "security": [],
+        "description": "HMAC-SHA256 signed delivery event callback. Sign timestamp + '.' + raw body.",
+        "parameters": [
+          { "name": "X-LanQin-Timestamp", "in": "header", "required": true, "schema": { "type": "string" } },
+          { "name": "X-LanQin-Signature", "in": "header", "required": true, "schema": { "type": "string", "pattern": "^sha256=[a-f0-9]{64}$" } }
+        ],
+        "requestBody": { "required": true, "content": { "application/json": { "schema": { "type": "object", "required": ["events"], "properties": { "events": { "type": "array", "minItems": 1, "maxItems": 100, "items": { "$ref": "#/components/schemas/DeliveryEventInput" } } } } } } },
+        "responses": { "200": { "description": "Events stored or deduplicated" }, "401": { "$ref": "#/components/responses/Unauthorized" } }
+      }
+    }
+  },
+  "components": {
+    "securitySchemes": { "bearerAuth": { "type": "http", "scheme": "bearer", "bearerFormat": "lq_* API Token" } },
+    "parameters": {
+      "IdempotencyKey": { "name": "Idempotency-Key", "in": "header", "required": false, "description": "Up to 128 characters; retained for 24 hours.", "schema": { "type": "string", "maxLength": 128 } },
+      "ResourceId": { "name": "id", "in": "path", "required": true, "schema": { "type": "string" } },
+      "Limit": { "name": "limit", "in": "query", "required": false, "schema": { "type": "integer", "minimum": 1, "maximum": 100 } },
+      "Cursor": { "name": "cursor", "in": "query", "required": false, "schema": { "type": "string" } }
+    },
+    "responses": {
+      "Unauthorized": { "description": "Missing or invalid authentication" },
+      "NotFound": { "description": "Resource not found or not owned by the token user" },
+      "Conflict": { "description": "Idempotency key conflict or concurrent state change" }
+    },
+    "schemas": {
+      "SendRequest": {
+        "type": "object", "required": ["mailboxId"],
+        "properties": {
+          "mailboxId": { "type": "string" }, "from": { "type": "string" }, "fromName": { "type": "string" },
+          "to": { "type": "array", "items": { "type": "string", "format": "email" } },
+          "cc": { "type": "array", "items": { "type": "string", "format": "email" } },
+          "bcc": { "type": "array", "items": { "type": "string", "format": "email" } },
+          "subject": { "type": "string" }, "text": { "type": "string" }, "html": { "type": "string" },
+          "attachments": { "type": "array", "items": { "$ref": "#/components/schemas/AttachmentInput" } }
+        }
+      },
+      "AttachmentInput": { "type": "object", "required": ["filename", "contentBase64"], "properties": { "filename": { "type": "string" }, "contentType": { "type": "string" }, "contentBase64": { "type": "string", "contentEncoding": "base64" } } },
+      "SendStatus": {
+        "type": "object", "required": ["id", "status", "messageId", "rfcMessageId", "mailboxId", "createdAt"],
+        "properties": {
+          "id": { "type": "string", "description": "Stable sent message id (mail_*)." },
+          "queueId": { "type": "string", "description": "Internal queue id (snd_*)." },
+          "status": { "type": "string", "enum": ["accepted", "queued", "sending", "relayed", "failed", "canceled", "delivered", "bounced", "complained", "rejected", "deferred", "partial"] },
+          "queueStatus": { "type": "string", "enum": ["queued", "sending", "delivered", "failed", "canceled"] },
+          "messageId": { "type": "string" }, "rfcMessageId": { "type": "string" }, "mailboxId": { "type": "string" },
+          "mailboxAddress": { "type": "string" }, "subject": { "type": "string" }, "recipients": { "type": "array", "items": { "type": "string" } },
+          "recipientStatuses": { "type": "array", "items": { "$ref": "#/components/schemas/RecipientStatus" } },
+          "createdAt": { "type": "string", "format": "date-time" }
+        }
+      },
+      "RecipientStatus": { "type": "object", "required": ["recipient", "status", "occurredAt"], "properties": { "recipient": { "type": "string" }, "status": { "type": "string" }, "reason": { "type": "string" }, "provider": { "type": "string" }, "occurredAt": { "type": "string", "format": "date-time" } } },
+      "DeliveryEventInput": {
+        "type": "object", "required": ["id", "provider", "recipient", "status", "occurredAt"],
+        "properties": {
+          "id": { "type": "string" }, "provider": { "type": "string" }, "queueId": { "type": "string" }, "messageId": { "type": "string" }, "rfcMessageId": { "type": "string" },
+          "recipient": { "type": "string", "format": "email" }, "status": { "type": "string", "enum": ["delivered", "bounced", "complained", "rejected", "deferred"] },
+          "reason": { "type": "string" }, "occurredAt": { "type": "string", "format": "date-time" }
+        }
+      },
+      "Error": { "type": "object", "required": ["error"], "properties": { "error": { "type": "string" } } }
+    }
+  }
+}

install.sh

@@ -0,0 +1,267 @@
+#!/usr/bin/env bash
+set -Eeuo pipefail
+
+REPOSITORY="zxyszx/NewSzxcn-Email"
+RAW_BASE="https://raw.githubusercontent.com/${REPOSITORY}/main"
+INSTALL_DIR="${LANQIN_INSTALL_DIR:-/opt/newszxcn-email}"
+COMMAND="${1:-install}"
+ROLLBACK_FILE="${INSTALL_DIR}/.rollback-image"
+
+log() { printf '\033[1;34m[NewSzxcn]\033[0m %s\n' "$*"; }
+success() { printf '\033[1;32m[完成]\033[0m %s\n' "$*"; }
+warn() { printf '\033[1;33m[提示]\033[0m %s\n' "$*"; }
+fail() { printf '\033[1;31m[错误]\033[0m %s\n' "$*" >&2; exit 1; }
+
+usage() {
+  cat <<'EOF'
+NewSzxcn Email 管理命令
+
+用法：newszxcn-email <command>
+
+  install     首次安装或修复部署
+  update      备份数据库并更新到最新版
+  status      查看容器与健康状态
+  logs        持续查看运行日志
+  rollback    回滚到上次命令行更新前的镜像
+  uninstall   停止并移除容器，保留邮件与配置
+EOF
+}
+
+require_root() {
+  if [[ "${EUID}" -ne 0 ]]; then
+    fail "请使用 root 运行，例如：curl -fsSL ${RAW_BASE}/install.sh | sudo bash"
+  fi
+}
+
+require_curl() {
+  command -v curl >/dev/null 2>&1 || fail "系统缺少 curl，请先安装 curl。"
+}
+
+ensure_docker() {
+  if ! command -v docker >/dev/null 2>&1; then
+    log "未检测到 Docker，正在安装 Docker Engine..."
+    curl -fsSL https://get.docker.com | sh
+  fi
+  if command -v systemctl >/dev/null 2>&1; then
+    systemctl enable --now docker >/dev/null 2>&1 || true
+  fi
+  docker compose version >/dev/null 2>&1 || fail "需要 Docker Compose v2。"
+}
+
+compose() {
+  docker compose --project-directory "${INSTALL_DIR}" -f "${INSTALL_DIR}/docker-compose.yml" "$@"
+}
+
+script_dir() {
+  cd "$(dirname "${BASH_SOURCE[0]}")" 2>/dev/null && pwd
+}
+
+refresh_assets() {
+  local source_dir
+  source_dir="$(script_dir || true)"
+  install -d -m 0755 "${INSTALL_DIR}"
+  if [[ -f "${source_dir}/deploy/docker-compose.yml" && -f "${source_dir}/deploy/.env.example" ]]; then
+    install -m 0644 "${source_dir}/deploy/docker-compose.yml" "${INSTALL_DIR}/docker-compose.yml"
+    install -m 0644 "${source_dir}/deploy/.env.example" "${INSTALL_DIR}/.env.example"
+    install -m 0755 "${source_dir}/install.sh" /usr/local/bin/newszxcn-email
+  else
+    curl -fsSL "${RAW_BASE}/deploy/docker-compose.yml" -o "${INSTALL_DIR}/docker-compose.yml"
+    curl -fsSL "${RAW_BASE}/deploy/.env.example" -o "${INSTALL_DIR}/.env.example"
+    curl -fsSL "${RAW_BASE}/install.sh" -o /usr/local/bin/newszxcn-email.new
+    chmod 0755 /usr/local/bin/newszxcn-email.new
+    mv /usr/local/bin/newszxcn-email.new /usr/local/bin/newszxcn-email
+  fi
+}
+
+random_secret() {
+  if command -v openssl >/dev/null 2>&1; then
+    openssl rand -hex 24
+  else
+    od -An -N24 -tx1 /dev/urandom | tr -d ' \n'
+  fi
+}
+
+set_env() {
+  local key="$1" value="$2" file="${INSTALL_DIR}/.env" tmp
+  tmp="$(mktemp)"
+  awk -v key="${key}" -v value="${value}" '
+    BEGIN { found=0 }
+    $0 ~ "^" key "=" { print key "=" value; found=1; next }
+    { print }
+    END { if (!found) print key "=" value }
+  ' "${file}" > "${tmp}"
+  cat "${tmp}" > "${file}"
+  rm -f "${tmp}"
+}
+
+env_value() {
+  local key="$1"
+  sed -n "s/^${key}=//p" "${INSTALL_DIR}/.env" | tail -n 1
+}
+
+prompt_value() {
+  local variable="$1" prompt="$2" default_value="$3" secret="${4:-false}"
+  local value="${!variable:-}"
+  if [[ -z "${value}" && -r /dev/tty ]]; then
+    if [[ "${secret}" == "true" ]]; then
+      read -r -s -p "${prompt}${default_value:+ [自动生成]}: " value </dev/tty
+      printf '\n' >/dev/tty
+    else
+      read -r -p "${prompt}${default_value:+ [${default_value}]}: " value </dev/tty
+    fi
+  fi
+  value="${value:-${default_value}}"
+  printf '%s' "${value}"
+}
+
+configure_first_install() {
+  if [[ -f "${INSTALL_DIR}/.env" ]]; then
+    return
+  fi
+  install -m 0600 "${INSTALL_DIR}/.env.example" "${INSTALL_DIR}/.env"
+
+  local hostname public_url admin_username admin_password update_token
+  hostname="$(prompt_value LANQIN_PUBLIC_HOSTNAME "邮件服务器域名，例如 mail.example.com" "")"
+  [[ "${hostname}" =~ ^[A-Za-z0-9.-]+\.[A-Za-z]{2,}$ ]] || fail "邮件服务器域名格式不正确。"
+  public_url="$(prompt_value LANQIN_PUBLIC_BASE_URL "Webmail 访问地址" "https://${hostname}")"
+  admin_username="$(prompt_value LANQIN_ADMIN_USERNAME "初始管理员用户名" "admin")"
+  [[ "${admin_username}" =~ ^[A-Za-z0-9][A-Za-z0-9._%+-]{1,79}$ ]] || fail "管理员用户名格式不正确，需为 2-80 位且不能包含 @。"
+  admin_password="$(prompt_value LANQIN_ADMIN_PASSWORD "初始管理员密码" "" true)"
+  if [[ -z "${admin_password}" ]]; then
+    admin_password="$(random_secret)"
+    warn "已自动生成管理员密码：${admin_password}"
+  fi
+  [[ ${#admin_password} -ge 10 ]] || fail "管理员密码至少需要 10 个字符。"
+  update_token="$(random_secret)"
+
+  set_env LANQIN_PUBLIC_HOSTNAME "${hostname}"
+  set_env LANQIN_PUBLIC_BASE_URL "${public_url}"
+  set_env LANQIN_ADMIN_USERNAME "${admin_username}"
+  set_env LANQIN_ADMIN_PASSWORD "${admin_password}"
+  set_env LANQIN_UPDATE_TOKEN "${update_token}"
+  chmod 0600 "${INSTALL_DIR}/.env"
+}
+
+ensure_update_token() {
+  local token
+  token="$(env_value LANQIN_UPDATE_TOKEN || true)"
+  if [[ -z "${token}" ]]; then
+    set_env LANQIN_UPDATE_TOKEN "$(random_secret)"
+    chmod 0600 "${INSTALL_DIR}/.env"
+  fi
+}
+
+prepare_directories() {
+  install -d -m 0755 "${INSTALL_DIR}/data" "${INSTALL_DIR}/mail" "${INSTALL_DIR}/dkim"
+  install -d -m 0700 "${INSTALL_DIR}/data/backups"
+}
+
+wait_for_health() {
+  local attempts="${1:-60}" bind port
+  bind="$(env_value LANQIN_HTTP_BIND || true)"
+  bind="${bind:-80}"
+  port="${bind##*:}"
+  for ((i=1; i<=attempts; i++)); do
+    if curl -fsS --max-time 3 "http://127.0.0.1:${port}/healthz" >/dev/null 2>&1; then
+      return 0
+    fi
+    sleep 2
+  done
+  return 1
+}
+
+backup_database() {
+  local timestamp
+  timestamp="$(date -u +%Y%m%dT%H%M%SZ)"
+  if [[ -n "$(compose ps -q lanqin-email 2>/dev/null || true)" ]]; then
+    compose exec -T lanqin-email sh -c "mkdir -p /data/backups && sqlite3 /data/lanqin.db \".backup '/data/backups/cli-update-${timestamp}.db'\"" >/dev/null
+    log "数据库已备份到 data/backups/cli-update-${timestamp}.db"
+  fi
+}
+
+remember_current_image() {
+  local container_id image_id rollback_tag
+  container_id="$(compose ps -q lanqin-email 2>/dev/null || true)"
+  [[ -n "${container_id}" ]] || return 0
+  image_id="$(docker inspect --format '{{.Image}}' "${container_id}")"
+  rollback_tag="newszxcn-email:rollback-$(date -u +%Y%m%d%H%M%S)"
+  docker image tag "${image_id}" "${rollback_tag}"
+  printf '%s\n' "${rollback_tag}" > "${ROLLBACK_FILE}"
+}
+
+do_install() {
+  ensure_docker
+  refresh_assets
+  configure_first_install
+  ensure_update_token
+  prepare_directories
+  log "正在拉取 NewSzxcn Email 镜像..."
+  compose pull
+  log "正在启动服务..."
+  compose up -d --remove-orphans
+  wait_for_health 90 || fail "服务未能通过健康检查，请执行 newszxcn-email logs 查看日志。"
+  success "安装完成：$(env_value LANQIN_PUBLIC_BASE_URL)"
+  warn "下一步请配置 MX、SPF、DKIM、DMARC，并确认 25/465/587/993/995 端口可访问。"
+}
+
+do_update() {
+  [[ -f "${INSTALL_DIR}/.env" ]] || fail "尚未安装，请先执行 install。"
+  ensure_docker
+  refresh_assets
+  ensure_update_token
+  backup_database
+  remember_current_image
+  log "正在拉取最新版..."
+  compose pull
+  if ! compose up -d --remove-orphans; then
+    warn "新版本容器启动失败，正在自动回滚。"
+    do_rollback
+    fail "更新失败，已回滚到原镜像。"
+  fi
+  if ! wait_for_health 90; then
+    warn "新版本健康检查失败，正在自动回滚。"
+    do_rollback
+    fail "更新失败，已回滚到原镜像。"
+  fi
+  success "系统已更新，配置、邮件和数据库均已保留。"
+}
+
+do_rollback() {
+  [[ -f "${ROLLBACK_FILE}" ]] || fail "没有可用的回滚镜像。"
+  local image
+  image="$(tr -d '\r\n' < "${ROLLBACK_FILE}")"
+  docker image inspect "${image}" >/dev/null 2>&1 || fail "回滚镜像已不存在：${image}"
+  log "正在回滚到 ${image}..."
+  LANQIN_IMAGE="${image}" compose up -d --no-deps --force-recreate lanqin-email
+  wait_for_health 90 || fail "回滚后服务仍未通过健康检查，请查看日志。"
+  success "已回滚到 ${image}。"
+}
+
+do_status() {
+  [[ -f "${INSTALL_DIR}/docker-compose.yml" ]] || fail "尚未安装。"
+  compose ps
+  if wait_for_health 1; then
+    success "Web 与 API 健康检查正常。"
+  else
+    fail "健康检查失败。"
+  fi
+}
+
+do_uninstall() {
+  [[ -f "${INSTALL_DIR}/docker-compose.yml" ]] || fail "尚未安装。"
+  compose down --remove-orphans
+  success "容器已移除，${INSTALL_DIR} 中的配置、邮件和数据库仍然保留。"
+}
+
+require_root
+require_curl
+case "${COMMAND}" in
+  install) do_install ;;
+  update) do_update ;;
+  status) ensure_docker; do_status ;;
+  logs) ensure_docker; compose logs -f --tail=200 lanqin-email updater ;;
+  rollback) ensure_docker; do_rollback ;;
+  uninstall) ensure_docker; do_uninstall ;;
+  help|-h|--help) usage ;;
+  *) usage; fail "未知命令：${COMMAND}" ;;
+esac