release: prepare v1.2.27

* fix: merge account and mailbox forwarding

* docs: prepare v1.2.20 release

---------

Co-authored-by: zxyszx <299979470+zxyszx@users.noreply.github.com>

.github/release-notes/v1.2.11.md

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+## 本次更新
+
+### 移除“加载邮箱”过渡文案
+
+- 刷新邮箱页面时，邮箱选择器从第一帧开始显示“全部邮箱”。
+- 邮箱列表在后台加载，不再显示不存在的“加载邮箱...”状态。
+- 接口确认当前账号没有邮箱后，选择器才显示“未注册邮箱”。
+
+### 验证
+
+- 已通过前端 TypeScript 检查、生产构建和 shadcn/ui 检查。
+
+**完整更新日志**：[v1.2.10...v1.2.11](https://github.com/zxyszx/NewSzxcn-Email/compare/v1.2.10...v1.2.11)

.github/release-notes/v1.2.12.md

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+## 本次更新
+
+### 修复文件夹管理
+
+- “全部邮箱”模式现在可以新建文件夹，并在账号下每个邮箱中创建同名文件夹。
+- “全部邮箱”模式可以删除自定义文件夹，原有邮件会分别移回各自邮箱的收件箱，不会删除邮件。
+- 文件夹排序仍限定在单个邮箱中，避免不同邮箱之间出现错误顺序。
+
+### 修复导入邮件的存储显示
+
+- 账号设置中的存储容量改为统计“全部邮箱”，不再因为默认选中空邮箱而显示 `0 B`。
+- 数据统计默认显示“全部邮箱”，并新增邮箱选择器，可查看单个邮箱的数据。
+- 已导入邮件及附件继续保留原始数据，现有邮件无需重新导入。
+
+### 改进邮件下载
+
+- 下载邮件改为浏览器直接流式下载，不再等整个压缩包载入页面内存后才开始保存。
+- 点击后立即显示下载提示，大邮箱可直接查看浏览器下载进度。
+- 下载格式为 ZIP，压缩包内每封邮件均为标准 EML 文件，保留邮件原始内容和历史时间。
+
+### 优化设置与后台切换
+
+- 邮箱页面空闲时预加载设置和后台页面，减少首次点击齿轮时的等待。
+- 设置页只加载当前栏目需要的数据，降低无关接口并发请求。
+- 管理员可从邮箱页面和设置侧栏直接进入后台管理，普通用户不会显示该入口。
+
+### 验证
+
+- 已通过完整 Go 测试、前端 TypeScript 检查、生产构建和 shadcn/ui 检查。
+- 已通过安装脚本语法和自动化回归测试。
+- 已在桌面端和移动端实测统计页、文件夹创建/删除、ZIP 下载和管理员后台跳转。
+
+**完整更新日志**：[v1.2.11...v1.2.12](https://github.com/zxyszx/NewSzxcn-Email/compare/v1.2.11...v1.2.12)

.github/release-notes/v1.2.13.md

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+## 本次更新
+
+### 修复选中邮件下载
+
+- 勾选邮件后点击下载，只导出当前选中的邮件；未勾选时仍导出当前邮箱视图。
+- 下载接口继续校验邮箱归属和当前视图，不能通过邮件 ID 下载其他账号的邮件。
+
+### 改进 EML 文件信息
+
+- 压缩包内文件名改为“邮件标题 (接收日期).eml”，保留中文标题，不再出现乱码式名称。
+- EML 文件修改时间使用邮件接收时间，与邮件详情中的“接收时间”保持一致。
+- 邮件原始正文、附件和邮件头保持不变；同名文件会自动添加序号。
+
+### 调整邮箱与设置交互
+
+- 移除邮箱页面头部的后台管理图标，后台管理入口仅保留在设置页面。
+- 设置页面提前加载并在加载完成后切换，避免首次点击齿轮时出现整页加载闪烁。
+- 邮箱页面不再预加载后台管理代码，减少无用网络请求和解析开销。
+
+### 修复最后一个邮箱删除
+
+- 管理员现在可以删除账号的最后一个邮箱，账号本身和登录状态不会被删除。
+- 删除邮箱流程的错误提示改为简体中文。
+
+### 验证
+
+- 已通过完整 Go 测试、Go 静态检查、前端 TypeScript 检查、生产构建和 shadcn/ui 检查。
+- 已实测管理员删除最后一个邮箱、设置页面切换和后台入口显示。
+
+**完整更新日志**：[v1.2.12...v1.2.13](https://github.com/zxyszx/NewSzxcn-Email/compare/v1.2.12...v1.2.13)

.github/release-notes/v1.2.14.md

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+## 本次更新
+
+### 统一邮箱登录与注册
+
+- 前台和后台统一使用主登录邮箱与密码登录，不再接受旧用户名登录。
+- 自助注册会一次性创建账号和邮箱，并要求填写显示名称、邮箱前缀、域名和密码确认。
+- 只有主登录邮箱可以登录网页，账号下的其他邮箱不会成为额外登录入口。
+- 网页修改或管理员重置密码时，会同步更新该账号全部邮箱的 SMTP/IMAP 密码。
+
+### 加强管理员与安全管理
+
+- 系统只保留一名安装时创建的管理员，后台和 API 均不能新增或提升第二名管理员。
+- 内置“管理员”和“普通用户”权限配置不可修改或删除，自定义权限配置仍可正常创建和分配。
+- 双因素认证新增恢复码，服务器菜单支持重置管理员密码和管理员 2FA。
+- 保留 Cloudflare Turnstile 登录与注册防刷验证。
+
+### 修复邮件批量移动与界面布局
+
+- “全部邮箱”模式可以将跨邮箱选中的邮件批量移动到各邮箱对应的自定义文件夹。
+- 固定邮箱选择器、复制按钮和展开菜单宽度，切换具体邮箱时不再缩窄。
+- 邮箱页与设置页统一侧栏宽度，点击设置时分隔线和内容区域不再左右跳动。
+
+### 改进安装与升级兼容
+
+- 新安装默认创建 `admin@邮箱域名` 管理员邮箱，并支持自定义管理员邮箱前缀。
+- 旧数据库升级时自动保留现有管理员、邮箱、密码和双因素认证数据，不会生成错误的占位域名账号。
+- 管理员在后台修改主登录邮箱后，服务重启不会恢复成安装时的旧邮箱。
+- 安装指南、环境变量示例和管理员恢复命令已同步更新。
+
+### 验证
+
+- 已通过完整 Go 测试、Go 静态检查、前端 TypeScript 检查和生产构建。
+- 已通过安装脚本测试、ShellCheck，以及桌面端和移动端浏览器验证。
+
+**完整更新日志**：[v1.2.13...v1.2.14](https://github.com/zxyszx/NewSzxcn-Email/compare/v1.2.13...v1.2.14)

.github/release-notes/v1.2.15.md

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+## 本次更新
+
+### 修复邮箱选择器右侧空白
+
+- “全部邮箱”状态下移除复制按钮的永久空白占位，选择器恢复为整行宽度。
+- 选择具体邮箱时，复制按钮覆盖显示在选择器右侧，不再挤压或缩窄选择器。
+- 下拉箭头、未读数量和复制按钮保持独立位置，长邮箱地址仍会正确截断。
+
+### 验证
+
+- 已通过前端 TypeScript 检查、shadcn/ui 检查和生产构建。
+- 已在桌面端和 390×844 移动端验证“全部邮箱”与具体邮箱两种状态，无横向溢出或控制台错误。
+
+**完整更新日志**：[v1.2.14...v1.2.15](https://github.com/zxyszx/NewSzxcn-Email/compare/v1.2.14...v1.2.15)

.github/release-notes/v1.2.16.md

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+- 新增后台 Telegram 私聊新邮件通知，支持自动获取 Chat ID、测试通知、正文显示模式和失败自动重试。
+- 新增 GitHub Release 版本频道通知；仅首次创建 Release 时发送一次，工作流重跑不会重复推送。
+- Bot Token 不通过设置接口返回，Telegram 异常不会阻塞邮件接收或版本发布。

.github/release-notes/v1.2.17.md

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+- Telegram 私聊改用 10 分钟一次性绑定码，避免自动获取 Chat ID 时绑定到错误账号。
+- 新增通知邮箱范围，可分别选择已启用邮箱和“未知收件”；升级后默认保留管理员邮箱范围。
+- 优化邮件通知排版，显示实际收件邮箱、正文摘要和附件数量；高可信验证码支持高亮与一键复制。
+- 完善邮件解析，支持 GBK 等字符集、伪 HTML 正文清理和历史引用过滤，减少乱码及旧验证码误识别。
+- 完善通知队列和错误处理：配置变化清理旧任务、发送租约、限流等待、格式降级、永久错误停止重试，并在任务结束后清除敏感正文。
+- 补齐本地互发、未知收件和外部 IMAP 新邮件通知；首次导入的历史邮件以及垃圾邮件、已删除邮件不会发送通知。

.github/release-notes/v1.2.18.md

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+- 修复邮箱选择列表超过侧栏边框的问题，展开列表现在与上方选择框保持相同宽度。
+- 修复含日期年份的邮件可能漏识别验证码的问题，Gate 等验证码邮件可正常显示一键复制按钮。
+- 邮件通知中的网址改为可点击链接，超长追踪地址使用简短文字显示，阅读更清晰。
+- 版本频道通知移除底部按钮，改为正文中的“查看本次更新”文字链接。

.github/release-notes/v1.2.19.md

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+- 优化“全部邮箱”写信：默认使用登录邮箱，可切换其他发件邮箱，切换时保留收件人、主题、正文和附件；写信窗口宽度同步调整。
+- 优化一键安装管理菜单：根据安装状态显示可用功能，补充运行状态、实际版本、访问地址和修复入口，并加强备份、回滚及命令检查。
+- 修复域名密钥变化后 Rspamd 可能继续使用旧 DKIM 私钥的问题；后台 DNS 检测现在会核对实际 DKIM 公钥。
+- 修复部分验证码邮件因收件邮箱或链接内容干扰而不显示验证码及复制按钮的问题。
+- 优化 DNS 记录复制：主机记录和记录值可分别复制，长 DKIM 记录能够正常换行显示。
+- 新邮箱默认创建“个人、家人、朋友、工作、重要”五个标签；已有邮箱升级后自动补齐，“全部邮箱”会合并同名标签并支持跨邮箱筛选与导出。

.github/release-notes/v1.2.20.md

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+- 调整邮件转发规则：账号级转发固定作用于所有邮箱，并与单个邮箱追加的转发目标同时生效。
+- 优化单个邮箱转发设置：账号级目标默认勾选、置顶并锁定，邮箱及转发地址按数字和字母排序，目标较多时可查看完整列表。
+- 优化 Telegram 版本频道通知排版：使用精简标题、分层说明和完整更新链接，提升手机端阅读体验。

.github/release-notes/v1.2.21.md

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+- 优化登录与会话流程：登录后完整返回原页面及查询条件，区分未登录、超时、取消和网络故障，并为服务不可用状态提供明确的重新连接入口。
+- 完善后台与邮箱错误处理：管理员设置、邮件列表、邮件详情、发送队列、个人资料、签名、DNS 检查及注册流程均增加真实失败提示和重试反馈，避免静默失败或错误成功提示。
+- 优化邮箱与个人设置：恢复显示名称编辑，新增可持久化的标准/紧凑邮件布局，移除无效时区和模拟资料，修正发信成功后草稿删除失败的提示逻辑。
+- 保持并强化转发规则：账号级转发目标在所有邮箱中默认勾选、置顶且不可取消，单邮箱可继续追加独立目标，现有单邮箱配置不受影响，目标按数字和字母排序。
+- 统一界面视觉与交互：采用更清晰的中性色、文字层级、焦点状态和紧凑圆角，补充图标按钮名称、工具提示及全屏页面主区域，改善桌面与移动端可访问性。
+- 优化前端加载与开发体验：拆分邮件编辑器相关代码包，控制单个构建文件体积，并支持通过 `VITE_API_TARGET` 指定本地后端代理地址。
+- 加固邮件 HTML 安全：升级 DOMPurify 至已修复版本，依赖审计无已知漏洞；同步清理过时演示数据、无效状态和旧页面逻辑。
+- 完成全量质量复核：前后端构建、Go 全量及竞态测试、SMTP、外部 IMAP、OAuth、Telegram、Webhook、转发、队列、权限隔离、安装、备份、回滚和 DKIM 同步测试均已通过。

.github/release-notes/v1.2.22.md

@@ -0,0 +1,5 @@
+- 修复 QQ 邮箱、网易邮箱、Gmail 等第三方客户端可以收信但无法发信的问题。
+- SMTP 提交服务新增 `AUTH LOGIN` 认证支持，并继续兼容 `AUTH PLAIN`；两种方式均只允许在 TLS 加密连接中使用。
+- 兼容带初始用户名和标准两步用户名/密码挑战的 LOGIN 流程，适配常见手机邮箱、Apple Mail 和 Thunderbird。
+- 客户端配置保持 IMAP 993/SSL、POP3 995/SSL、SMTP 465/SSL，不增加额外服务器地址或备用配置。
+- 新增 SMTP 能力声明、LOGIN 认证、STARTTLS、隐式 TLS 和完整发信回归测试。

.github/release-notes/v1.2.23.md

@@ -0,0 +1,5 @@
+- 优化转发验证完成页：移除“返回邮箱”入口，外部收件人确认 Netflix、ChatGPT 等验证码转发授权后不会进入邮箱登录页，只显示验证结果和关闭页面提示。
+- 合并验证邮箱搜索与添加入口：输入内容会实时筛选已添加地址，输入新邮箱时可直接发送验证邮件，已存在地址会明确显示为“已添加”。
+- 重整验证邮箱管理列表：待验证邮箱置顶展示，已验证邮箱按数字和字母排序并聚合为可折叠分组，邮箱数量较多时仍便于查找和管理。
+- 精简邮件转发主页面：不再平铺全部验证邮箱标签，改为显示已验证与待验证数量汇总，点击即可进入管理列表。
+- 补充验证完成页回归测试，确保页面不再出现邮箱首页或登录入口，并完成前端构建、组件规范、后端全量测试与静态检查。

.github/release-notes/v1.2.24.md

@@ -0,0 +1,3 @@
+- 精简邮件转发页面入口，移除右上角重复的“管理验证邮箱”按钮。
+- 保留下方汇总入口并统一命名为“管理验证邮箱”，继续显示已验证与待验证邮箱数量。
+- 没有验证邮箱时仍显示该入口，用户可直接进入添加和验证邮箱。

.github/release-notes/v1.2.25.md

@@ -0,0 +1,9 @@
+- 修复收信规则移动到自定义文件夹时被错误归入“已归档”的问题，现在会按规则名称真实创建目标文件夹。
+- 修正发件人、附件名、邮件大小和日期条件的匹配边界，拒绝字段不支持的运算符，避免规则保存后永远无法命中。
+- “应用到现有邮件”不再处理已发送和草稿邮件，规则暂停启用时也可执行用户明确选择的现有邮件处理。
+- 完善规则动作失败处理：失败的动作不再误中止后续规则，归档、删除和移动错误不再被静默忽略。
+- 收信规则列表新增适用邮箱显示，并提供独立的上移、下移按钮，多条规则时可完整调整优先级。
+- 新增自定义文件夹图标，支持按名称自动匹配、手动选择以及上传小图标，并内置 Netflix、ChatGPT、账单、购物、旅行、工作等常用类型。
+- 上传图标会在浏览器本地缩放为 64×64 PNG，服务端校验 PNG 文件头并限制在 32 KB；不联网查询品牌，不保留上传原图。
+- 文件夹图标已在侧栏、桌面端与移动端移动菜单中统一显示，数据库升级会自动为旧文件夹补充默认图标。
+- 补充收信规则、自定义文件夹、图标自动匹配、手动图标保留和上传格式安全边界的回归测试。

.github/release-notes/v1.2.26.md

@@ -0,0 +1,7 @@
+- 修复手机端删除自定义文件夹时菜单先消失、确认框无法显示的问题，文件夹菜单现在与移动侧栏保持在同一交互层中。
+- 删除文件夹前会稳定显示确认信息，提交后显示处理中状态，避免重复操作；文件夹内邮件仍会安全移回收件箱。
+- 修复手机侧栏中新建文件夹弹窗被侧栏遮挡或立即关闭的问题，侧栏退出后再打开创建界面。
+- 重做手机端“新建规则 / 编辑规则”布局：标题、表单与底部操作区改为纵向结构，内容区域可独立滚动。
+- 优化规则条件与动作的窄屏排列，字段和运算符并排、输入框独占一行，添加与删除按钮保持易点击且不会挤出屏幕。
+- 规则底部创建和取消按钮固定可见并适配手机安全区域，多条件、多动作时仍可顺畅滚动和提交。
+- 优化通用确认弹窗的手机宽度和按钮触控尺寸，减少误触并避免贴边显示。

.github/release-notes/v1.2.27.md

@@ -0,0 +1,6 @@
+- 修复收信规则选择“移动到自定义文件夹”后立即跳回归档的问题。
+- 移除移动动作右侧显示 `Archive` 等英文内部值的旧输入框，避免系统值与中文选项重复出现。
+- 将移动目标整合为一个文件夹选择器，系统文件夹统一显示中文名称。
+- 文件夹选择器新增“系统文件夹”和“自定义文件夹”分组，自动列出当前邮箱或全部邮箱中已经创建的自定义文件夹。
+- 选择 Netflix、amazon 等自定义文件夹后会直接保存真实文件夹名称，不再错误保存为归档。
+- 已验证规则创建、列表摘要和后端数据均保留所选自定义文件夹。

.github/workflows/ci.yml

@@ -44,9 +44,10 @@ jobs:
         run: |
           sudo apt-get update
           sudo apt-get install -y shellcheck sqlite3
-          bash -n install.sh tests/install_test.sh
-          shellcheck -x install.sh tests/install_test.sh
+          bash -n install.sh tests/install_test.sh tests/dkim_sync_test.sh
+          shellcheck -x install.sh tests/install_test.sh tests/dkim_sync_test.sh deploy/rspamd/sync-dkim.sh
           bash tests/install_test.sh
+          bash tests/dkim_sync_test.sh
 
       - name: Setup pnpm
         uses: pnpm/action-setup@v4

.github/workflows/docker.yml

@@ -31,9 +31,10 @@ jobs:
         run: |
           sudo apt-get update
           sudo apt-get install -y shellcheck sqlite3
-          bash -n install.sh tests/install_test.sh
-          shellcheck -x install.sh tests/install_test.sh
+          bash -n install.sh tests/install_test.sh tests/dkim_sync_test.sh
+          shellcheck -x install.sh tests/install_test.sh tests/dkim_sync_test.sh deploy/rspamd/sync-dkim.sh
           bash tests/install_test.sh
+          bash tests/dkim_sync_test.sh
 
       - name: Setup pnpm
         uses: pnpm/action-setup@v4
@@ -205,11 +206,8 @@ jobs:
         shell: bash
         run: |
           tag="${{ needs.release.outputs.tag }}"
-          version="${{ needs.release.outputs.version }}"
           repo="${GITHUB_REPOSITORY}"
           repo_url="https://github.com/${repo}"
-          image_base="${REGISTRY}/${repo}"
-          image_base="${image_base,,}"
           current_commit="$(git rev-list -n 1 "${tag}")"
           previous_tag="$(git describe --tags --abbrev=0 "${current_commit}^" 2>/dev/null || true)"
           version_notes=".github/release-notes/${tag}.md"
@@ -240,38 +238,10 @@ jobs:
             fi
           fi
 
-          cat > release-notes.md <<EOF
-          自建邮箱 Webmail 全栈方案，包含 Web、API、Postfix、Dovecot、Rspamd 等组件。
-
-          ## 注意
-
-          如果需要公网正常收发邮件，请确保已正确配置 MX、SPF、DKIM、DMARC 以及 25 / 587 / 993 等端口。
-
-          ## 使用文档
-
-          - [项目文档](${repo_url}#readme)
-          - [开源协议](${repo_url}/blob/main/LICENSE)
-
-          ## Docker 镜像
-
-          | 组件 | 镜像 |
-          |------|------|
-          | All-in-one | \`${image_base}:${tag}\` |
-          | API | \`${image_base}-api:${tag}\` |
-          | Web | \`${image_base}-web:${tag}\` |
-          | Postfix | \`${image_base}-postfix:${tag}\` |
-          | Dovecot | \`${image_base}-dovecot:${tag}\` |
-          | Rspamd | \`${image_base}-rspamd:${tag}\` |
-
-          同时也会发布 \`${version}\`、\`latest\` 和 \`sha-*\` 标签。
-          EOF
-
-          {
-            echo
-            cat generated-release-notes.md
-          } >> release-notes.md
+          cp generated-release-notes.md release-notes.md
 
       - name: Create or update GitHub release
+        id: release_result
         env:
           GH_TOKEN: ${{ github.token }}
         shell: bash
@@ -280,6 +250,92 @@ jobs:
           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
+            echo "created=false" >> "$GITHUB_OUTPUT"
           else
             gh release create "${tag}" --verify-tag --title "${title}" --notes-file release-notes.md --latest
+            echo "created=true" >> "$GITHUB_OUTPUT"
           fi
+
+      - name: Notify Telegram release channel
+        if: steps.release_result.outputs.created == 'true'
+        continue-on-error: true
+        env:
+          TELEGRAM_BOT_TOKEN: ${{ secrets.TELEGRAM_RELEASE_BOT_TOKEN }}
+          TELEGRAM_CHAT_ID: ${{ secrets.TELEGRAM_RELEASE_CHAT_ID }}
+          RELEASE_TAG: ${{ needs.release.outputs.tag }}
+          RELEASE_URL: ${{ needs.release.outputs.release_url }}
+        shell: bash
+        run: |
+          if [[ -z "${TELEGRAM_BOT_TOKEN}" || -z "${TELEGRAM_CHAT_ID}" ]]; then
+            echo "::notice::Telegram release notification is not configured; skipping."
+            exit 0
+          fi
+
+          python3 - <<'PY'
+          import html
+          import os
+          import re
+
+          notes = open("release-notes.md", "r", encoding="utf-8").read().strip()
+          entries = []
+          for raw in notes.splitlines():
+              line = re.sub(r"^#{1,6}\s+", "", raw).strip()
+              line = re.sub(r"^[-*+]\s+", "", line)
+              line = re.sub(r"\*\*([^*]+)\*\*", r"\1", line)
+              line = re.sub(r"`([^`]+)`", r"\1", line)
+              line = re.sub(r"\[([^]]+)\]\([^)]+\)", r"\1", line)
+              if line:
+                  entries.append(line)
+
+          sections = []
+          for index, entry in enumerate(entries, 1):
+              parts = re.split(r"[：:]", entry, maxsplit=1)
+              if len(parts) == 1:
+                  parts = re.split(r"[，；。]", entry, maxsplit=1)
+              title = parts[0].strip()
+              description = parts[1].strip() if len(parts) > 1 else ""
+              section = f"<b>{index:02d} · {html.escape(title)}</b>"
+              if description:
+                  section += "\n<blockquote>" + html.escape(description.rstrip("。") + "。") + "</blockquote>"
+              sections.append(section)
+
+          tag = os.environ["RELEASE_TAG"]
+          prefix = f"<b>NewSzxcn Email {html.escape(tag)}</b>\n<i>新版本现已发布</i>\n\n<b>更新内容 · {len(sections)} 项</b>\n\n"
+          release_url = html.escape(os.environ["RELEASE_URL"], quote=True)
+          footer = f'\n\n<a href="{release_url}">查看完整更新说明 ↗</a>'
+          available = max(0, 3600 - len(prefix) - len(footer))
+          visible_sections = []
+          used = 0
+          for section in sections:
+              added = len(section) + (2 if visible_sections else 0)
+              if used + added > available:
+                  break
+              visible_sections.append(section)
+              used += added
+          body = "\n\n".join(visible_sections)
+          if len(visible_sections) < len(sections):
+              body += "\n\n更新内容较长，请打开下方链接查看完整内容。"
+          open("telegram-release-message.txt", "w", encoding="utf-8").write(prefix + body + footer)
+          PY
+
+          jq -n \
+            --arg chat_id "${TELEGRAM_CHAT_ID}" \
+            --rawfile text telegram-release-message.txt \
+            '{
+              chat_id:$chat_id,
+              text:$text,
+              parse_mode:"HTML",
+              disable_web_page_preview:true
+            }' > telegram-release-payload.json
+
+          http_code="$(curl -sS --retry 2 --retry-all-errors --connect-timeout 10 --max-time 30 \
+            -o telegram-release-response.json -w '%{http_code}' \
+            -H 'Content-Type: application/json' \
+            --data-binary @telegram-release-payload.json \
+            "https://api.telegram.org/bot${TELEGRAM_BOT_TOKEN}/sendMessage")"
+          if [[ "${http_code}" != "200" ]] || ! jq -e '.ok == true' telegram-release-response.json >/dev/null 2>&1; then
+            description="$(jq -r '.description // "unknown Telegram error"' telegram-release-response.json 2>/dev/null || echo "unknown Telegram error")"
+            echo "::warning::Telegram release notification failed (HTTP ${http_code}): ${description}"
+            exit 1
+          fi
+          echo "::notice::Telegram release notification sent."

README.md

@@ -7,7 +7,7 @@ NewSzxcn-Email 是一个可自建、可管理、带完整 Webmail 与管理后
 [![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)
 
-[邮箱指南](docs/GUIDE.md) · [版本发布](https://github.com/zxyszx/NewSzxcn-Email/releases) · [部署文档](deploy/README.md) · [English](README.en.md)
+[邮箱后台配置指南](docs/GUIDE.md) · [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
 
@@ -16,7 +16,7 @@ NewSzxcn-Email 是一个可自建、可管理、带完整 Webmail 与管理后
 | 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 |
+| 管理后台 | 账号、权限配置、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 |
@@ -35,8 +35,60 @@ curl -fsSL https://raw.githubusercontent.com/zxyszx/NewSzxcn-Email/main/install.
 bash <(curl -fsSL https://raw.githubusercontent.com/zxyszx/NewSzxcn-Email/main/install.sh)
 ```
 
-脚本会先显示统一管理菜单。空白服务器默认选择安装，并进入防火墙、邮件域名、管理员
-账号和 Web 部署方式的引导；检测到已有安装时默认选择安全更新。选择重新安装会先将
+### 管理面板
+
+脚本会根据服务器当前状态显示不同菜单。空白服务器只显示安装和退出，避免误选尚不可用的更新、回滚或重启功能：
+
+```text
+==================================================
+          NewSzxcn Email 管理面板
+==================================================
+状态：尚未安装
+--------------------------------------------------
+1. 一键安装 NewSzxcn Email
+0. 退出
+==================================================
+请选择 [1]：
+```
+
+检测到已有安装后，会动态读取服务状态、实际镜像版本和访问地址，并默认选择安全更新：
+
+```text
+==================================================
+          NewSzxcn Email 管理面板
+==================================================
+状态：运行中
+版本：v1.2.19（示例，以实际安装版本为准）
+地址：https://mail.example.com
+--------------------------------------------------
+安装与维护
+1. 重新安装（完整备份，失败自动恢复）
+2. 更新系统（自动备份，失败自动回滚）
+3. 检查并修复现有安装
+
+服务管理
+4. 查看运行状态
+5. 重启服务
+6. 查看实时日志
+
+证书与恢复
+7. 管理 SSL 证书
+8. 回滚到上次更新前版本
+
+账号与帮助
+9. 邮箱后台配置指南
+10. 查看管理员登录信息
+11. 重置管理员登录密码
+
+危险操作
+12. 卸载服务（保留数据）
+
+0. 退出
+==================================================
+请选择 [2]：
+```
+
+容器停止后菜单会显示“已停止”；配置存在但运行文件残缺时会显示“安装不完整”并默认选择修复。空白服务器进入安装后，会依次引导配置防火墙、邮件服务器域名、邮箱地址域名、管理员邮箱和 Web 部署方式。选择重新安装会先将
 `/opt/newszxcn-email` 完整改名备份，失败时自动恢复原目录、Nginx 和旧容器。更新前会
 校验数据库备份并保存镜像、Compose、环境、安装脚本和 Nginx，失败时执行完整恢复。
 
@@ -44,7 +96,7 @@ bash <(curl -fsSL https://raw.githubusercontent.com/zxyszx/NewSzxcn-Email/main/i
 
 - 安装或检查 Docker Engine 与 Docker Compose v2
 - 选择自动添加邮局必要端口规则，或保留现有防火墙由用户自行配置
-- 询问邮件域名、管理员用户名和密码；默认用户名为 `admin`，回车自动生成 12 位密码，自定义密码最少 6 位
+- 自动检测并确认邮箱地址域名；创建管理员邮箱时可选择默认 `admin` 前缀或自行输入前缀，例如服务器域名 `mail.example.com`、前缀 `admin` 会创建 `admin@example.com`；回车自动生成 12 位密码，自定义密码最少 6 位
 - 选择自动 Nginx + SSL、宝塔/已有 Nginx 反代或 HTTP 测试模式
 - 自动模式使用官方 `acme.sh` 签发和续期证书，不会强制停止占用 80 端口的进程
 - 创建 `/opt/newszxcn-email` 持久化目录
@@ -87,6 +139,7 @@ sudo ns
 sudo newszxcn-email guide
 sudo newszxcn-email credentials
 sudo newszxcn-email reset-password
+sudo newszxcn-email repair
 sudo newszxcn-email status
 sudo newszxcn-email logs
 sudo newszxcn-email restart
@@ -178,6 +231,8 @@ pnpm install
 pnpm run dev
 ```
 
+后端不在默认的 `http://localhost:8080` 时，可通过 `VITE_API_TARGET=http://localhost:18080 pnpm run dev` 指定本地代理目标。
+
 提交前建议运行：
 
 ```bash

README.zh-CN.md

@@ -11,7 +11,7 @@ NewSzxcn-Email 是一个可自建、可管理、带完整 Webmail 与管理后
 | 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 |
+| 管理后台 | 账号、权限配置、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 |
@@ -33,8 +33,8 @@ bash <(curl -fsSL https://raw.githubusercontent.com/zxyszx/NewSzxcn-Email/main/i
 脚本会自动完成：
 
 - 安装或检查 Docker Engine 与 Docker Compose v2
-- 首先选择仅开放必要端口、保留现有防火墙或开放全部端口
-- 询问邮件域名、管理员用户名和密码；默认用户名为 `admin`，回车自动生成 12 位密码，自定义密码最少 6 位
+- 选择自动添加邮局必要端口规则，或保留现有防火墙由用户自行配置；不会清空已有防火墙规则
+- 分开确认邮件服务器域名和邮箱地址域名，创建唯一管理员邮箱；默认 `admin@邮箱地址域名`，回车自动生成 12 位密码，自定义密码最少 6 位
 - 选择自动 Nginx + SSL、宝塔/已有 Nginx 反代或 HTTP 测试模式
 - 自动模式使用官方 `acme.sh` 签发和续期证书，不会强制停止占用 80 端口的进程
 - 创建 `/opt/newszxcn-email` 持久化目录

VERSION

@@ -1 +1 @@
-1.2.10
+1.2.27

apps/api/internal/app/admin_handlers.go

@@ -52,7 +52,7 @@ func (a *App) handleListUsers(w http.ResponseWriter, r *http.Request) {
 	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.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`)
+		ORDER BY CASE WHEN u.role='admin' THEN 0 ELSE 1 END, lower(COALESCE(NULLIF(u.email,''),u.login_name)), lower(u.display_name), u.created_at`)
 	if err != nil {
 		respondError(w, http.StatusInternalServerError, "failed to list users")
 		return
@@ -108,20 +108,19 @@ func (a *App) handleCreateUser(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	actor := currentUser(r)
-	var loginName string
-	var err error
-	if strings.TrimSpace(req.LoginName) != "" {
-		loginName, err = cleanUsername(req.LoginName)
-	} else {
-		loginName, err = cleanLoginName(req.Email)
+	emailInput := req.Email
+	if strings.TrimSpace(emailInput) == "" && strings.Contains(strings.TrimSpace(req.LoginName), "@") {
+		emailInput = req.LoginName
 	}
+	primaryEmail, err := cleanPrimaryEmail(emailInput)
 	if err != nil {
 		badRequest(w, err)
 		return
 	}
 	displayName := strings.TrimSpace(req.DisplayName)
 	if displayName == "" {
-		displayName = loginName
+		badRequest(w, errors.New("displayName is required"))
+		return
 	}
 	role := strings.TrimSpace(req.Role)
 	if role == "" {
@@ -131,8 +130,8 @@ func (a *App) handleCreateUser(w http.ResponseWriter, r *http.Request) {
 		badRequest(w, errors.New("invalid role"))
 		return
 	}
-	if role == "admin" && (actor == nil || actor.Role != "admin") {
-		respondError(w, http.StatusForbidden, "only administrators can create administrator users")
+	if role == "admin" {
+		respondError(w, http.StatusForbidden, "管理员只能由安装流程创建")
 		return
 	}
 	mailboxLimitOverride, err := normalizeMailboxLimitOverride(req.MailboxLimitOverride)
@@ -161,7 +160,7 @@ func (a *App) handleCreateUser(w http.ResponseWriter, r *http.Request) {
 	}
 	defer tx.Rollback()
 	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 {
+		VALUES(?,?,?,?,?,?,?,?,?,?)`, id, primaryEmail, primaryEmail, displayName, role, string(passwordHash), boolInt(req.Disabled), nullableInt(mailboxLimitOverride), now, now); err != nil {
 		badRequest(w, err)
 		return
 	}
@@ -190,6 +189,7 @@ func (a *App) handleUpdateUser(w http.ResponseWriter, r *http.Request) {
 	current := currentUser(r)
 	var req struct {
 		LoginName            string    `json:"loginName"`
+		Email                string    `json:"email"`
 		DisplayName          string    `json:"displayName"`
 		Role                 string    `json:"role"`
 		Disabled             *bool     `json:"disabled"`
@@ -218,16 +218,29 @@ func (a *App) handleUpdateUser(w http.ResponseWriter, r *http.Request) {
 		respondError(w, http.StatusNotFound, "user not found")
 		return
 	}
-	requestedLoginName := strings.TrimSpace(req.LoginName)
+	if existing.Role == "admin" && role != "admin" {
+		badRequest(w, errors.New("唯一管理员不能降级"))
+		return
+	}
+	if existing.Role != "admin" && role == "admin" {
+		respondError(w, http.StatusForbidden, "管理员只能由安装流程创建")
+		return
+	}
+	emailInput := req.Email
+	if strings.TrimSpace(emailInput) == "" && strings.Contains(strings.TrimSpace(req.LoginName), "@") {
+		emailInput = req.LoginName
+	}
+	primaryEmail := existing.Email
 	loginName := existing.LoginName
-	if requestedLoginName != "" {
-		loginName, err = cleanUsername(requestedLoginName)
+	if strings.TrimSpace(emailInput) != "" {
+		primaryEmail, err = cleanPrimaryEmail(emailInput)
 		if err != nil {
 			badRequest(w, err)
 			return
 		}
+		loginName = primaryEmail
 	}
-	if current == nil || (current.Role != "admin" && (existing.Role == "admin" || role == "admin")) {
+	if current == nil || (current.Role != "admin" && existing.Role == "admin") {
 		respondError(w, http.StatusForbidden, "only administrators can modify administrator users")
 		return
 	}
@@ -239,6 +252,10 @@ func (a *App) handleUpdateUser(w http.ResponseWriter, r *http.Request) {
 		badRequest(w, errors.New("default administrator must remain an active super administrator"))
 		return
 	}
+	if existing.Role == "admin" && disabled {
+		badRequest(w, errors.New("唯一管理员不能停用"))
+		return
+	}
 	mailboxLimitOverride := existing.MailboxLimitOverride
 	if req.MailboxLimitOverride != nil {
 		mailboxLimitOverride, err = normalizeMailboxLimitOverride(req.MailboxLimitOverride)
@@ -294,14 +311,10 @@ func (a *App) handleUpdateUser(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	defer tx.Rollback()
-	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 {
+		loginName, primaryEmail, 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"))
+			badRequest(w, errors.New("主登录邮箱已被使用"))
 			return
 		}
 		respondError(w, http.StatusInternalServerError, "failed to update user")
@@ -317,6 +330,11 @@ func (a *App) handleUpdateUser(w http.ResponseWriter, r *http.Request) {
 		respondError(w, http.StatusInternalServerError, "failed to update user")
 		return
 	}
+	if existing.Role == "admin" {
+		a.updateConfig(func(cfg *Config) {
+			cfg.AdminEmail = primaryEmail
+		})
+	}
 	user, err := a.adminUserByID(r.Context(), id)
 	if err != nil {
 		respondError(w, http.StatusNotFound, "user not found")
@@ -575,11 +593,8 @@ func (a *App) handleCreateMailbox(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	if role == "admin" {
-		current := currentUser(r)
-		if current == nil || current.Role != "admin" {
-			respondError(w, http.StatusForbidden, "only administrators can create administrator users")
-			return
-		}
+		respondError(w, http.StatusForbidden, "管理员只能由安装流程创建")
+		return
 	}
 
 	domain, err := a.domainByID(r.Context(), req.DomainID)
@@ -617,12 +632,16 @@ func (a *App) handleCreateMailbox(w http.ResponseWriter, r *http.Request) {
 			return
 		}
 	} else {
-		ownerLoginName, err := cleanLoginName(req.OwnerLoginName, req.OwnerEmail, address)
+		ownerEmailInput := req.OwnerEmail
+		if strings.TrimSpace(ownerEmailInput) == "" && strings.Contains(strings.TrimSpace(req.OwnerLoginName), "@") {
+			ownerEmailInput = req.OwnerLoginName
+		}
+		ownerEmail, err := cleanPrimaryEmail(firstNonEmpty(ownerEmailInput, address))
 		if err != nil {
 			badRequest(w, err)
 			return
 		}
-		err = tx.QueryRowContext(r.Context(), `SELECT id FROM users WHERE (login_name=? OR email=?) AND disabled=0`, ownerLoginName, ownerLoginName).Scan(&userID)
+		err = tx.QueryRowContext(r.Context(), `SELECT id FROM users WHERE email=? AND disabled=0`, ownerEmail).Scan(&userID)
 		if errors.Is(err, sql.ErrNoRows) {
 			passwordHash, err := bcrypt.GenerateFromPassword([]byte(req.Password), bcrypt.DefaultCost)
 			if err != nil {
@@ -631,11 +650,11 @@ func (a *App) handleCreateMailbox(w http.ResponseWriter, r *http.Request) {
 			}
 			userID = newID("usr")
 			ownerDisplayName := displayName
-			if !strings.EqualFold(ownerLoginName, address) {
-				ownerDisplayName = ownerLoginName
+			if !strings.EqualFold(ownerEmail, address) {
+				ownerDisplayName = ownerEmail
 			}
 			_, 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)
+				VALUES(?,?,?,?,?,?,?,?,?)`, userID, ownerEmail, ownerEmail, ownerDisplayName, role, string(passwordHash), 0, now, now)
 			if err != nil {
 				badRequest(w, err)
 				return
@@ -730,26 +749,9 @@ func (a *App) handleUpdateMailbox(w http.ResponseWriter, r *http.Request) {
 
 func (a *App) handleDeleteMailbox(w http.ResponseWriter, r *http.Request) {
 	id := chi.URLParam(r, "id")
-	current := currentUser(r)
-	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
-	}
-	var count int
-	if current != nil && owner == current.ID {
-		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")
+		respondError(w, http.StatusInternalServerError, "加载邮箱邮件失败")
 		return
 	}
 	messageIDs := []string{}
@@ -765,12 +767,12 @@ func (a *App) handleDeleteMailbox(w http.ResponseWriter, r *http.Request) {
 	}
 	res, err := a.db.ExecContext(r.Context(), `DELETE FROM mailboxes WHERE id=?`, id)
 	if err != nil {
-		respondError(w, http.StatusInternalServerError, "failed to delete mailbox")
+		respondError(w, http.StatusInternalServerError, "删除邮箱失败")
 		return
 	}
 	affected, _ := res.RowsAffected()
 	if affected == 0 {
-		respondError(w, http.StatusNotFound, "mailbox not found")
+		respondError(w, http.StatusNotFound, "邮箱不存在或已被删除")
 		return
 	}
 	respondJSON(w, http.StatusOK, map[string]any{"ok": true})

apps/api/internal/app/app.go

@@ -23,16 +23,21 @@ import (
 )
 
 type App struct {
-	cfg           Config
-	cfgMu         sync.RWMutex
-	db            *sql.DB
-	log           *slog.Logger
-	now           func() time.Time
-	policy        *HTMLPolicy
-	workerCancel  context.CancelFunc
-	workerWG      sync.WaitGroup
-	maildirHealth *maildirSyncHealthTracker
-	externalIMAP  externalIMAPClientFactory
+	cfg                Config
+	cfgMu              sync.RWMutex
+	db                 *sql.DB
+	log                *slog.Logger
+	now                func() time.Time
+	policy             *HTMLPolicy
+	workerCancel       context.CancelFunc
+	workerWG           sync.WaitGroup
+	maildirHealth      *maildirSyncHealthTracker
+	externalIMAP       externalIMAPClientFactory
+	turnstileURL       string
+	telegramURL        string
+	telegramPairMu     sync.Mutex
+	telegramPairs      map[string]telegramPairing
+	telegramDeliveryMu sync.Mutex
 }
 
 func (a *App) config() Config {
@@ -70,7 +75,7 @@ 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(), maildirHealth: newMaildirSyncHealthTracker()}
+	a := &App{cfg: cfg, db: db, log: logger, now: time.Now, policy: NewHTMLPolicy(), maildirHealth: newMaildirSyncHealthTracker(), telegramURL: "https://api.telegram.org", telegramPairs: map[string]telegramPairing{}}
 	a.externalIMAP = a
 	if err := a.configureSQLite(context.Background()); err != nil {
 		db.Close()
@@ -92,6 +97,18 @@ func New(cfg Config, logger *slog.Logger) (*App, error) {
 		db.Close()
 		return nil, err
 	}
+	if err := a.initializeTelegramNotificationDefaults(context.Background()); err != nil {
+		db.Close()
+		return nil, err
+	}
+	if err := a.loadPersistedSystemSettings(context.Background()); err != nil {
+		db.Close()
+		return nil, err
+	}
+	if err := a.enforceSingleAdministratorIndex(context.Background()); err != nil {
+		db.Close()
+		return nil, err
+	}
 	workerCtx, cancel := context.WithCancel(context.Background())
 	a.workerCancel = cancel
 	a.startWorker(func() { a.scheduledSendWorker(workerCtx) })
@@ -102,6 +119,7 @@ func New(cfg Config, logger *slog.Logger) (*App, error) {
 	a.startWorker(func() { a.externalIMAPWorker(workerCtx) })
 	a.startWorker(func() { a.smtpEventsCleanupWorker(workerCtx) })
 	a.startWorker(func() { a.statusWebhookWorker(workerCtx) })
+	a.startWorker(func() { a.telegramMailWorker(workerCtx) })
 	return a, nil
 }
 
@@ -185,6 +203,14 @@ func (a *App) migrate(ctx context.Context) error {
 			expires_at TEXT NOT NULL,
 			created_at TEXT NOT NULL
 		)`,
+		`CREATE TABLE IF NOT EXISTS two_factor_recovery_codes (
+			id TEXT PRIMARY KEY,
+			user_id TEXT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+			code_hash TEXT NOT NULL,
+			used_at TEXT NOT NULL DEFAULT '',
+			created_at TEXT NOT NULL,
+			UNIQUE(user_id, code_hash)
+		)`,
 		`CREATE TABLE IF NOT EXISTS api_tokens (
 			id TEXT PRIMARY KEY,
 			user_id TEXT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
@@ -291,6 +317,7 @@ 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,
+			icon TEXT NOT NULL DEFAULT 'folder',
 			sort_order INTEGER NOT NULL DEFAULT 0,
 			uid_validity INTEGER NOT NULL DEFAULT 0,
 			uid_next INTEGER NOT NULL DEFAULT 1,
@@ -420,6 +447,20 @@ func (a *App) migrate(ctx context.Context) error {
 		)`,
 		`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 TABLE IF NOT EXISTS telegram_mail_outbox (
+			id TEXT PRIMARY KEY,
+			message_id TEXT NOT NULL UNIQUE,
+			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,
+			lease_until TEXT NOT NULL DEFAULT '',
+			telegram_message_id INTEGER NOT NULL DEFAULT 0
+		)`,
+		`CREATE INDEX IF NOT EXISTS idx_telegram_mail_outbox_due ON telegram_mail_outbox(delivered_at,next_attempt_at,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;
@@ -650,6 +691,9 @@ func (a *App) migrate(ctx context.Context) error {
 	if err := a.migrateFolderSortOrder(ctx); err != nil {
 		return err
 	}
+	if err := a.migrateFolderIcons(ctx); err != nil {
+		return err
+	}
 	if err := a.migrateExternalIMAP(ctx); err != nil {
 		return err
 	}
@@ -662,12 +706,117 @@ func (a *App) migrate(ctx context.Context) error {
 	if err := a.migrateAPITokenScopes(ctx); err != nil {
 		return err
 	}
+	if err := a.migrateTelegramNotifications(ctx); err != nil {
+		return err
+	}
+	if err := a.migrateDefaultMailLabels(ctx); err != nil {
+		return err
+	}
 	if err := a.ensureDefaultPermissionGroups(ctx); err != nil {
 		return err
 	}
 	return nil
 }
 
+func (a *App) migrateTelegramNotifications(ctx context.Context) error {
+	if err := a.ensureTableColumn(ctx, "telegram_mail_outbox", "lease_until", `ALTER TABLE telegram_mail_outbox ADD COLUMN lease_until TEXT NOT NULL DEFAULT ''`); err != nil {
+		return err
+	}
+	if err := a.ensureTableColumn(ctx, "telegram_mail_outbox", "telegram_message_id", `ALTER TABLE telegram_mail_outbox ADD COLUMN telegram_message_id INTEGER NOT NULL DEFAULT 0`); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (a *App) migrateDefaultMailLabels(ctx context.Context) error {
+	const marker = "defaultMailLabelsInitialized"
+	var initialized int
+	if err := a.db.QueryRowContext(ctx, `SELECT COUNT(1) FROM system_settings WHERE key=?`, marker).Scan(&initialized); err != nil {
+		return err
+	}
+	if initialized > 0 {
+		return nil
+	}
+	rows, err := a.db.QueryContext(ctx, `SELECT id FROM mailboxes ORDER BY id`)
+	if err != nil {
+		return err
+	}
+	var mailboxIDs []string
+	for rows.Next() {
+		var mailboxID string
+		if err := rows.Scan(&mailboxID); err != nil {
+			rows.Close()
+			return err
+		}
+		mailboxIDs = append(mailboxIDs, mailboxID)
+	}
+	if err := rows.Close(); err != nil {
+		return err
+	}
+	tx, err := a.db.BeginTx(ctx, nil)
+	if err != nil {
+		return err
+	}
+	defer tx.Rollback()
+	now := a.now().UTC().Format(time.RFC3339Nano)
+	for _, mailboxID := range mailboxIDs {
+		if err := insertDefaultMailLabels(ctx, tx, mailboxID, now); err != nil {
+			return err
+		}
+	}
+	if _, err := tx.ExecContext(ctx, `INSERT INTO system_settings(key,value,updated_at) VALUES(?,?,?)`, marker, "true", now); err != nil {
+		return err
+	}
+	return tx.Commit()
+}
+
+func (a *App) initializeTelegramNotificationDefaults(ctx context.Context) error {
+	now := a.now().UTC().Format(time.RFC3339Nano)
+	var mailboxSettingExists int
+	if err := a.db.QueryRowContext(ctx, `SELECT COUNT(1) FROM system_settings WHERE key='telegramMailboxIds'`).Scan(&mailboxSettingExists); err != nil {
+		return err
+	}
+	if mailboxSettingExists == 0 {
+		rows, err := a.db.QueryContext(ctx, `SELECT m.id FROM mailboxes m JOIN users u ON u.id=m.user_id WHERE u.role='admin' AND m.status='active' ORDER BY m.address`)
+		if err != nil {
+			return err
+		}
+		var mailboxIDs []string
+		for rows.Next() {
+			var id string
+			if err := rows.Scan(&id); err != nil {
+				rows.Close()
+				return err
+			}
+			mailboxIDs = append(mailboxIDs, id)
+		}
+		if err := rows.Close(); err != nil {
+			return err
+		}
+		if _, err := a.db.ExecContext(ctx, `INSERT INTO system_settings(key,value,updated_at) VALUES('telegramMailboxIds',?,?)`, strings.Join(mailboxIDs, ","), now); err != nil {
+			return err
+		}
+	}
+
+	var includeSettingExists int
+	if err := a.db.QueryRowContext(ctx, `SELECT COUNT(1) FROM system_settings WHERE key='telegramIncludeUnregistered'`).Scan(&includeSettingExists); err != nil {
+		return err
+	}
+	if includeSettingExists == 0 {
+		var enabled string
+		_ = a.db.QueryRowContext(ctx, `SELECT value FROM system_settings WHERE key='telegramMailEnabled'`).Scan(&enabled)
+		includeUnregistered := "false"
+		if strings.EqualFold(enabled, "true") {
+			includeUnregistered = "true"
+		}
+		if _, err := a.db.ExecContext(ctx, `INSERT INTO system_settings(key,value,updated_at) VALUES('telegramIncludeUnregistered',?,?)`, includeUnregistered, now); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
 func (a *App) migrateForwardingVerification(ctx context.Context) error {
 	columns := []struct {
 		name string
@@ -939,81 +1088,11 @@ func (a *App) migratePermissionGroupLimits(ctx context.Context) error {
 	return err
 }
 
-// migrateLegacyBootstrapMailbox removes mailboxes created by an older version of seed()
-// that implicitly created an admin mailbox with display_name "LanQin Admin".
-// Current seed() creates mailboxes with display_name = admin email, so this migration
-// has no effect on fresh installs. It only cleans up after upgrades from pre-v1.0 schema.
+// migrateLegacyBootstrapMailbox used to remove implicit bootstrap mailboxes.
+// Administrators now use a real mailbox as their primary login address, so old
+// bootstrap mailboxes must be preserved and normalized by the admin identity
+// migration instead of deleted.
 func (a *App) migrateLegacyBootstrapMailbox(ctx context.Context) error {
-	adminEmail := normalizeEmail(a.config().AdminEmail)
-	if adminEmail == "" || !strings.Contains(adminEmail, "@") {
-		return nil
-	}
-	rows, err := a.db.QueryContext(ctx, `
-		SELECT mb.id, mb.domain_id
-		FROM mailboxes mb
-		JOIN users u ON u.id=mb.user_id
-		WHERE mb.address=?
-		  AND mb.display_name='LanQin Admin'
-		  AND u.email=?
-		  AND u.role='admin'`, adminEmail, adminEmail)
-	if err != nil {
-		return err
-	}
-	type legacyMailbox struct {
-		id       string
-		domainID string
-	}
-	items := []legacyMailbox{}
-	for rows.Next() {
-		var item legacyMailbox
-		if err := rows.Scan(&item.id, &item.domainID); err != nil {
-			rows.Close()
-			return err
-		}
-		items = append(items, item)
-	}
-	if err := rows.Err(); err != nil {
-		rows.Close()
-		return err
-	}
-	if err := rows.Close(); err != nil {
-		return err
-	}
-	for _, item := range items {
-		messageRows, err := a.db.QueryContext(ctx, `SELECT id FROM messages WHERE mailbox_id=?`, item.id)
-		if err != nil {
-			return err
-		}
-		messageIDs := []string{}
-		for messageRows.Next() {
-			var messageID string
-			if err := messageRows.Scan(&messageID); err != nil {
-				messageRows.Close()
-				return err
-			}
-			messageIDs = append(messageIDs, messageID)
-		}
-		if err := messageRows.Err(); err != nil {
-			messageRows.Close()
-			return err
-		}
-		if err := messageRows.Close(); err != nil {
-			return err
-		}
-		for _, messageID := range messageIDs {
-			a.deleteMessage(ctx, messageID)
-		}
-		if _, err := a.db.ExecContext(ctx, `DELETE FROM mailboxes WHERE id=?`, item.id); err != nil {
-			return err
-		}
-		if _, err := a.db.ExecContext(ctx, `
-			DELETE FROM domains
-			WHERE id=?
-			  AND NOT EXISTS (SELECT 1 FROM mailboxes WHERE domain_id=domains.id)
-			  AND NOT EXISTS (SELECT 1 FROM aliases WHERE domain_id=domains.id)`, item.domainID); err != nil {
-			return err
-		}
-	}
 	return nil
 }
 
@@ -1412,7 +1491,11 @@ func (a *App) seed(ctx context.Context) error {
 		return err
 	}
 	if count > 0 {
-		return a.ensureConfiguredAdminSuperAdmin(ctx)
+		return a.migrateConfiguredAdministratorIdentity(ctx)
+	}
+	adminEmail, err := cleanPrimaryEmail(cfg.AdminEmail)
+	if err != nil {
+		return errors.New("LANQIN_ADMIN_EMAIL must be set to a valid email for a new installation")
 	}
 
 	adminPassword := cfg.AdminPassword
@@ -1430,25 +1513,8 @@ func (a *App) seed(ctx context.Context) error {
 	}
 	now := a.now().UTC().Format(time.RFC3339Nano)
 	userID := newID("usr")
-	if strings.TrimSpace(cfg.AdminUsername) != "" {
-		adminUsername, err := cleanUsername(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(cfg.AdminEmail)
-	if adminEmail == "" || !strings.Contains(adminEmail, "@") {
-		return errors.New("invalid admin email")
-	}
-	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 {
+		VALUES(?,?,?,?,?,?,?,?,?)`, userID, adminEmail, 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)
@@ -1483,18 +1549,221 @@ func (a *App) seed(ctx context.Context) error {
 }
 
 func (a *App) ensureConfiguredAdminSuperAdmin(ctx context.Context) error {
+	return a.migrateConfiguredAdministratorIdentity(ctx)
+}
+
+func (a *App) migrateConfiguredAdministratorIdentity(ctx context.Context) error {
 	cfg := a.config()
-	if adminUsername := normalizeLoginName(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)
+	type adminUser struct {
+		ID           string `json:"id"`
+		LoginName    string `json:"loginName,omitempty"`
+		Email        string `json:"email"`
+		PasswordHash string `json:"-"`
+		CreatedAt    string `json:"createdAt"`
+	}
+	rows, err := a.db.QueryContext(ctx, `SELECT id,login_name,email,password_hash,created_at FROM users WHERE role='admin' ORDER BY created_at,id`)
+	if err != nil {
 		return err
 	}
-	adminEmail := normalizeEmail(cfg.AdminEmail)
-	if adminEmail == "" || !strings.Contains(adminEmail, "@") {
-		return nil
+	admins := []adminUser{}
+	for rows.Next() {
+		var item adminUser
+		if err := rows.Scan(&item.ID, &item.LoginName, &item.Email, &item.PasswordHash, &item.CreatedAt); err != nil {
+			rows.Close()
+			return err
+		}
+		admins = append(admins, item)
 	}
-	_, err := a.db.ExecContext(ctx, `UPDATE users SET role='admin', disabled=0, updated_at=? WHERE email=?`,
-		a.now().UTC().Format(time.RFC3339Nano), adminEmail)
+	if err := rows.Err(); err != nil {
+		rows.Close()
+		return err
+	}
+	if err := rows.Close(); err != nil {
+		return err
+	}
+	if len(admins) == 0 {
+		if configuredEmail := normalizeEmail(cfg.AdminEmail); configuredEmail != "" {
+			row := a.db.QueryRowContext(ctx, `SELECT id,login_name,email,password_hash,created_at FROM users WHERE email=? LIMIT 1`, configuredEmail)
+			var item adminUser
+			if err := row.Scan(&item.ID, &item.LoginName, &item.Email, &item.PasswordHash, &item.CreatedAt); err == nil {
+				admins = append(admins, item)
+			} else if !errors.Is(err, sql.ErrNoRows) {
+				return err
+			}
+		}
+	}
+	if len(admins) == 0 && strings.TrimSpace(cfg.AdminUsername) != "" {
+		adminUsername := normalizeLoginName(cfg.AdminUsername)
+		row := a.db.QueryRowContext(ctx, `SELECT id,login_name,email,password_hash,created_at FROM users WHERE login_name=? OR email=? ORDER BY created_at,id LIMIT 1`, adminUsername, adminUsername)
+		var item adminUser
+		if err := row.Scan(&item.ID, &item.LoginName, &item.Email, &item.PasswordHash, &item.CreatedAt); err == nil {
+			admins = append(admins, item)
+		} else if !errors.Is(err, sql.ErrNoRows) {
+			return err
+		}
+	}
+	if len(admins) == 0 {
+		return errors.New("no administrator user found for identity migration")
+	}
+	keeper := admins[0]
+	adminEmail, emailSource, err := a.resolveAdministratorEmail(ctx, cfg, keeper.ID, keeper.LoginName, keeper.Email)
+	if err != nil {
+		return err
+	}
+	tx, err := a.db.BeginTx(ctx, nil)
+	if err != nil {
+		return err
+	}
+	defer tx.Rollback()
+	var conflictID string
+	if err := tx.QueryRowContext(ctx, `SELECT id FROM users WHERE email=? AND id<>? LIMIT 1`, adminEmail, keeper.ID).Scan(&conflictID); err == nil {
+		return fmt.Errorf("admin email %s already belongs to user %s", adminEmail, conflictID)
+	} else if !errors.Is(err, sql.ErrNoRows) {
+		return err
+	}
+	now := a.now().UTC().Format(time.RFC3339Nano)
+	demoted := []adminUser{}
+	for _, admin := range admins[1:] {
+		if _, err := tx.ExecContext(ctx, `UPDATE users SET role='user', updated_at=? WHERE id=?`, now, admin.ID); err != nil {
+			return err
+		}
+		admin.PasswordHash = ""
+		demoted = append(demoted, admin)
+	}
+	if _, err := tx.ExecContext(ctx, `UPDATE users SET login_name=?, email=?, role='admin', disabled=0, updated_at=? WHERE id=?`,
+		adminEmail, adminEmail, now, keeper.ID); err != nil {
+		if strings.Contains(strings.ToLower(err.Error()), "unique") {
+			return fmt.Errorf("admin identity migration conflict: %w", err)
+		}
+		return err
+	}
+	parts := strings.SplitN(adminEmail, "@", 2)
+	localPart := parts[0]
+	domainName := normalizeDomain(parts[1])
+	var domainID string
+	if err := tx.QueryRowContext(ctx, `SELECT id FROM domains WHERE name=?`, domainName).Scan(&domainID); err != nil {
+		if !errors.Is(err, sql.ErrNoRows) {
+			return err
+		}
+		domainID, err = a.createDomainTx(ctx, tx, domainName)
+		if err != nil {
+			return err
+		}
+	}
+	mailboxCreated := false
+	var mailboxID, mailboxUserID string
+	if err := tx.QueryRowContext(ctx, `SELECT id,user_id FROM mailboxes WHERE address=?`, adminEmail).Scan(&mailboxID, &mailboxUserID); err != nil {
+		if !errors.Is(err, sql.ErrNoRows) {
+			return err
+		}
+		mailboxID, err = a.createMailboxWithPasswordHashTx(ctx, tx, keeper.ID, domainID, localPart, adminEmail, keeper.PasswordHash, 1024, "active")
+		if err != nil {
+			return err
+		}
+		mailboxCreated = true
+	} else if mailboxUserID != keeper.ID {
+		return fmt.Errorf("admin mailbox %s already belongs to user %s", adminEmail, mailboxUserID)
+	}
+	result := map[string]any{
+		"adminUserId":    keeper.ID,
+		"adminEmail":     adminEmail,
+		"emailSource":    emailSource,
+		"previousEmail":  keeper.Email,
+		"demotedAdmins":  demoted,
+		"mailboxId":      mailboxID,
+		"mailboxCreated": mailboxCreated,
+		"migratedAt":     now,
+	}
+	raw, _ := json.Marshal(result)
+	if _, err := tx.ExecContext(ctx, `INSERT INTO system_settings(key,value,updated_at) VALUES(?,?,?)
+		ON CONFLICT(key) DO UPDATE SET value=excluded.value, updated_at=excluded.updated_at`, "adminIdentityMigrationResult", string(raw), now); err != nil {
+		return err
+	}
+	if err := tx.Commit(); err != nil {
+		return err
+	}
+	a.updateConfig(func(current *Config) {
+		current.AdminEmail = adminEmail
+		if current.MailDomain == "" {
+			current.MailDomain = domainName
+		}
+	})
+	a.log.Info("administrator identity migration complete", "adminEmail", adminEmail, "adminUserId", keeper.ID, "demotedAdmins", len(demoted), "mailboxCreated", mailboxCreated)
+	return nil
+}
+
+func (a *App) resolveAdministratorEmail(ctx context.Context, cfg Config, userID, loginName, existingEmail string) (string, string, error) {
+	// Once initialized, the database identity is authoritative. This keeps an
+	// administrator email changed in the UI from reverting to the installer value.
+	if email, err := cleanPrimaryEmail(existingEmail); err == nil {
+		return email, "existing_admin_email", nil
+	}
+	if strings.TrimSpace(cfg.AdminEmail) != "" {
+		email, err := cleanPrimaryEmail(cfg.AdminEmail)
+		if err != nil {
+			return "", "", fmt.Errorf("invalid LANQIN_ADMIN_EMAIL: %w", err)
+		}
+		return email, "configured_admin_email", nil
+	}
+
+	preferredLocalPart := normalizeLocalPart(cfg.AdminUsername)
+	if preferredLocalPart == "" || strings.Contains(preferredLocalPart, "@") {
+		preferredLocalPart = normalizeLocalPart(loginName)
+	}
+	if preferredLocalPart == "" || strings.Contains(preferredLocalPart, "@") {
+		preferredLocalPart = "admin"
+	}
+	rows, err := a.db.QueryContext(ctx, `SELECT address FROM mailboxes WHERE user_id=? ORDER BY CASE WHEN lower(local_part)=? THEN 0 WHEN lower(local_part)='admin' THEN 1 ELSE 2 END, created_at, id`, userID, preferredLocalPart)
+	if err != nil {
+		return "", "", err
+	}
+	for rows.Next() {
+		var address string
+		if err := rows.Scan(&address); err != nil {
+			rows.Close()
+			return "", "", err
+		}
+		if email, err := cleanPrimaryEmail(address); err == nil {
+			rows.Close()
+			return email, "existing_admin_mailbox", nil
+		}
+	}
+	if err := rows.Err(); err != nil {
+		rows.Close()
+		return "", "", err
+	}
+	if err := rows.Close(); err != nil {
+		return "", "", err
+	}
+
+	if domain := normalizeDomain(cfg.MailDomain); validMailDomain(domain) {
+		return preferredLocalPart + "@" + domain, "configured_mail_domain", nil
+	}
+	var onlyDomain string
+	var domainCount int
+	if err := a.db.QueryRowContext(ctx, `SELECT COUNT(*), COALESCE(MIN(name),'') FROM domains`).Scan(&domainCount, &onlyDomain); err != nil {
+		return "", "", err
+	}
+	if domainCount == 1 && validMailDomain(onlyDomain) {
+		return preferredLocalPart + "@" + normalizeDomain(onlyDomain), "single_existing_domain", nil
+	}
+	publicDomain := normalizeDomain(cfg.PublicHostname)
+	if strings.HasPrefix(publicDomain, "mail.") {
+		publicDomain = strings.TrimPrefix(publicDomain, "mail.")
+	}
+	if validMailDomain(publicDomain) && !strings.HasSuffix(publicDomain, ".local") {
+		return preferredLocalPart + "@" + publicDomain, "public_hostname", nil
+	}
+	return "", "", errors.New("cannot determine administrator email; set LANQIN_ADMIN_EMAIL or LANQIN_MAIL_DOMAIN before updating")
+}
+
+func validMailDomain(domain string) bool {
+	domain = normalizeDomain(domain)
+	return domain != "" && strings.Contains(domain, ".") && !strings.ContainsAny(domain, "@/ :")
+}
+
+func (a *App) enforceSingleAdministratorIndex(ctx context.Context) error {
+	_, err := a.db.ExecContext(ctx, `CREATE UNIQUE INDEX IF NOT EXISTS idx_users_single_admin ON users(role) WHERE role='admin'`)
 	return err
 }
 
@@ -1549,6 +1818,30 @@ func defaultFolderDefs() []struct{ name, role string } {
 	}
 }
 
+type defaultMailLabel struct {
+	name  string
+	color string
+}
+
+func defaultMailLabelDefs() []defaultMailLabel {
+	return []defaultMailLabel{
+		{name: "个人", color: "#10b981"},
+		{name: "家人", color: "#ec4899"},
+		{name: "朋友", color: "#06b6d4"},
+		{name: "工作", color: "#3b82f6"},
+		{name: "重要", color: "#f59e0b"},
+	}
+}
+
+func insertDefaultMailLabels(ctx context.Context, tx *sql.Tx, mailboxID, now string) error {
+	for _, label := range defaultMailLabelDefs() {
+		if _, err := tx.ExecContext(ctx, `INSERT OR IGNORE INTO mail_labels(id,mailbox_id,name,color,created_at,updated_at) VALUES(?,?,?,?,?,?)`, newID("lbl"), mailboxID, label.name, label.color, now, now); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
 func (a *App) createMailbox(ctx context.Context, userID, domainID, localPart, displayName, password string, quotaMB int, status string) (string, error) {
 	passwordHash, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
 	if err != nil {
@@ -1606,6 +1899,9 @@ func (a *App) createMailboxWithPasswordHashTx(ctx context.Context, tx *sql.Tx, u
 			return "", err
 		}
 	}
+	if err := insertDefaultMailLabels(ctx, tx, id, now); err != nil {
+		return "", err
+	}
 	return id, nil
 }
 
@@ -1616,13 +1912,24 @@ func (a *App) seedWelcomeMessage(ctx context.Context, mailboxID string) error {
 		return err
 	}
 	now := a.now().UTC()
+	systemDomain := normalizeDomain(cfg.MailDomain)
+	if systemDomain == "" && strings.Contains(cfg.AdminEmail, "@") {
+		systemDomain = normalizeDomain(strings.SplitN(cfg.AdminEmail, "@", 2)[1])
+	}
+	if systemDomain == "" {
+		systemDomain = normalizeDomain(cfg.PublicHostname)
+	}
+	if systemDomain == "" {
+		systemDomain = "lanqin.local"
+	}
+	systemAddress := "system@" + systemDomain
 	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 {
 		rendered := renderMailTemplate(tpl, templateRenderData{
 			To:             cfg.AdminEmail,
-			From:           "system@lanqin.local",
+			From:           systemAddress,
 			PublicHostname: cfg.PublicHostname,
 			PublicBaseURL:  cfg.PublicBaseURL,
 			Time:           now,
@@ -1633,9 +1940,9 @@ func (a *App) seedWelcomeMessage(ctx context.Context, mailboxID string) error {
 		MailboxID:  mailboxID,
 		FolderID:   folderID,
 		MessageUID: newID("uid"),
-		MessageID:  fmt.Sprintf("<%s@lanqin.local>", newID("msg")),
+		MessageID:  fmt.Sprintf("<%s@%s>", newID("msg"), systemDomain),
 		Subject:    subject,
-		From:       "system@lanqin.local",
+		From:       systemAddress,
 		FromName:   "NewSzxcn 邮箱",
 		To:         []string{cfg.AdminEmail},
 		SentAt:     now,

apps/api/internal/app/auth_handlers.go

@@ -1,6 +1,7 @@
 package app
 
 import (
+	"database/sql"
 	"errors"
 	"net/http"
 	"strings"
@@ -35,8 +36,11 @@ func (a *App) handleLogin(w http.ResponseWriter, r *http.Request) {
 			return
 		}
 		if !verifyTOTP(secret, req.TwoFactorCode, a.now().UTC()) {
-			respondError(w, http.StatusUnauthorized, "验证码错误")
-			return
+			ok, consumeErr := a.consumeTwoFactorRecoveryCode(r.Context(), user.ID, req.TwoFactorCode)
+			if consumeErr != nil || !ok {
+				respondError(w, http.StatusUnauthorized, "验证码或恢复码错误")
+				return
+			}
 		}
 		a.deleteLoginChallenge(r.Context(), challenge.ID)
 		if err := a.issueSession(w, r, user.ID); err != nil {
@@ -50,18 +54,16 @@ func (a *App) handleLogin(w http.ResponseWriter, r *http.Request) {
 		respondError(w, http.StatusUnauthorized, "人机验证失败，请重试")
 		return
 	}
-	var loginName string
-	var err error
-	if strings.TrimSpace(req.LoginName) != "" {
-		loginName, err = cleanUsername(req.LoginName)
-	} else {
-		loginName, err = cleanLoginName(req.Email)
+	emailInput := req.Email
+	if strings.TrimSpace(emailInput) == "" && strings.Contains(strings.TrimSpace(req.LoginName), "@") {
+		emailInput = req.LoginName
 	}
+	email, err := cleanPrimaryEmail(emailInput)
 	if err != nil {
 		respondError(w, http.StatusUnauthorized, "账号或密码错误")
 		return
 	}
-	user, passwordHash, err := a.userByEmail(r.Context(), loginName)
+	user, passwordHash, err := a.userByEmail(r.Context(), email)
 	if err != nil || user.Disabled {
 		respondError(w, http.StatusUnauthorized, "账号或密码错误")
 		return
@@ -107,8 +109,8 @@ func (a *App) handleRegister(w http.ResponseWriter, r *http.Request) {
 		respondError(w, http.StatusUnauthorized, "人机验证失败，请重试")
 		return
 	}
-	email := normalizeEmail(req.Email)
-	if email == "" || !strings.Contains(email, "@") {
+	email, err := cleanPrimaryEmail(req.Email)
+	if err != nil {
 		badRequest(w, errors.New("邮箱地址无效"))
 		return
 	}
@@ -118,12 +120,43 @@ func (a *App) handleRegister(w http.ResponseWriter, r *http.Request) {
 	}
 	displayName := strings.TrimSpace(req.DisplayName)
 	if displayName == "" {
-		displayName = strings.Split(email, "@")[0]
+		badRequest(w, errors.New("请输入显示名称"))
+		return
 	}
 	if len([]rune(displayName)) > 80 {
 		badRequest(w, errors.New("显示名称不能超过 80 个字符"))
 		return
 	}
+	parts := strings.SplitN(email, "@", 2)
+	mailboxLocalPart := normalizeLocalPart(req.LocalPart)
+	if mailboxLocalPart == "" {
+		mailboxLocalPart = normalizeLocalPart(parts[0])
+	}
+	mailboxDomainID := strings.TrimSpace(req.DomainID)
+	var mailboxDomain string
+	if mailboxDomainID != "" {
+		err = a.db.QueryRowContext(r.Context(), `SELECT name FROM domains WHERE id=? AND status='active'`, mailboxDomainID).Scan(&mailboxDomain)
+	} else {
+		err = a.db.QueryRowContext(r.Context(), `SELECT id,name FROM domains WHERE lower(name)=? AND status='active' ORDER BY created_at LIMIT 1`, normalizeDomain(parts[1])).Scan(&mailboxDomainID, &mailboxDomain)
+	}
+	if err != nil {
+		if errors.Is(err, sql.ErrNoRows) {
+			badRequest(w, errors.New("所选邮箱域名不可用"))
+		} else {
+			respondError(w, http.StatusInternalServerError, "注册失败，请稍后重试")
+		}
+		return
+	}
+	if mailboxLocalPart == "" || !strings.EqualFold(email, mailboxLocalPart+"@"+normalizeDomain(mailboxDomain)) {
+		badRequest(w, errors.New("邮箱地址与所选前缀和域名不一致"))
+		return
+	}
+	for _, item := range parseReservedPrefixes(a.config().ReservedMailboxPrefixes) {
+		if item == mailboxLocalPart {
+			respondError(w, http.StatusForbidden, "该前缀已被保留，请使用其他前缀")
+			return
+		}
+	}
 	if _, _, err := a.userByEmail(r.Context(), email); err == nil {
 		respondError(w, http.StatusConflict, "该邮箱已被注册")
 		return
@@ -138,7 +171,13 @@ 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,login_name,email,display_name,role,password_hash,disabled,created_at,updated_at)
+	tx, err := a.db.BeginTx(r.Context(), nil)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "注册失败，请稍后重试")
+		return
+	}
+	defer tx.Rollback()
+	if _, err := tx.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")
@@ -147,6 +186,18 @@ func (a *App) handleRegister(w http.ResponseWriter, r *http.Request) {
 		respondError(w, http.StatusInternalServerError, "注册失败，请稍后重试")
 		return
 	}
+	if _, err := a.createMailboxWithPasswordHashTx(r.Context(), tx, userID, mailboxDomainID, mailboxLocalPart, displayName, string(passwordHash), 1024, "active"); err != nil {
+		if strings.Contains(strings.ToLower(err.Error()), "unique") {
+			respondError(w, http.StatusConflict, "该邮箱已被注册")
+		} else {
+			respondError(w, http.StatusInternalServerError, "邮箱创建失败，请稍后重试")
+		}
+		return
+	}
+	if err := tx.Commit(); err != nil {
+		respondError(w, http.StatusInternalServerError, "注册失败，请稍后重试")
+		return
+	}
 	user, err := a.userByID(r.Context(), userID)
 	if err != nil {
 		respondError(w, http.StatusInternalServerError, "failed to load user")
@@ -156,38 +207,6 @@ func (a *App) handleRegister(w http.ResponseWriter, r *http.Request) {
 		respondError(w, http.StatusInternalServerError, "登录失败，请稍后重试")
 		return
 	}
-
-	// Create a mailbox for the registered user
-	var mailboxDomainID string
-	var mailboxLocalPart string
-	if strings.TrimSpace(req.DomainID) != "" && strings.TrimSpace(req.LocalPart) != "" {
-		// User selected a specific domain and local part
-		mailboxDomainID = strings.TrimSpace(req.DomainID)
-		mailboxLocalPart = normalizeLocalPart(req.LocalPart)
-	} else {
-		// Auto-detect: use the first active domain and email local part
-		if err := a.db.QueryRowContext(r.Context(), `SELECT id FROM domains WHERE status='active' ORDER BY created_at ASC LIMIT 1`).Scan(&mailboxDomainID); err != nil {
-			mailboxDomainID = ""
-		}
-		if mailboxDomainID != "" {
-			mailboxLocalPart = strings.SplitN(email, "@", 2)[0]
-		}
-	}
-	if mailboxDomainID != "" && mailboxLocalPart != "" {
-		// Check reserved prefixes
-		reserved := map[string]bool{}
-		for _, item := range parseReservedPrefixes(a.config().ReservedMailboxPrefixes) {
-			reserved[item] = true
-		}
-		if reserved[mailboxLocalPart] {
-			respondError(w, http.StatusForbidden, "该前缀已被保留，请使用其他前缀")
-			return
-		}
-		if _, mbErr := a.createMailboxWithPasswordHash(r.Context(), user.ID, mailboxDomainID, mailboxLocalPart, displayName, string(passwordHash), 1024, "active"); mbErr != nil {
-			a.log.Warn("failed to create mailbox for registered user", "error", mbErr, "email", email)
-		}
-	}
-
 	respondJSON(w, http.StatusCreated, map[string]any{"user": user})
 }
 
@@ -205,6 +224,10 @@ func (a *App) handleMe(w http.ResponseWriter, r *http.Request) {
 
 func (a *App) handleUpdateProfile(w http.ResponseWriter, r *http.Request) {
 	user := currentUser(r)
+	if user == nil || user.Role != "admin" {
+		respondError(w, http.StatusForbidden, "显示名称注册后不可自行修改，如需更换请联系管理员")
+		return
+	}
 	var req struct {
 		DisplayName string `json:"displayName"`
 	}

apps/api/internal/app/config.go

@@ -16,6 +16,7 @@ type Config struct {
 	SessionTTLHours                 int
 	AdminUsername                   string
 	AdminEmail                      string
+	MailDomain                      string
 	AdminPassword                   string
 	PublicHostname                  string
 	PublicBaseURL                   string
@@ -51,6 +52,12 @@ type Config struct {
 	ExternalIMAPGmailClientSecret   string
 	ExternalIMAPOutlookClientID     string
 	ExternalIMAPOutlookClientSecret string
+	TelegramMailEnabled             bool
+	TelegramBotToken                string
+	TelegramPrivateChatID           string
+	TelegramBodyMode                string
+	TelegramMailboxIDs              string
+	TelegramIncludeUnregistered     bool
 	MailTranslateEnabled            bool
 	MailTranslateMaxChars           int
 	DeliveryWebhookSecret           string
@@ -72,7 +79,8 @@ func LoadConfig() Config {
 		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")),
+		AdminEmail:                      strings.ToLower(getenv("LANQIN_ADMIN_EMAIL", "")),
+		MailDomain:                      normalizeDomain(getenv("LANQIN_MAIL_DOMAIN", "")),
 		AdminPassword:                   getenv("LANQIN_ADMIN_PASSWORD", ""),
 		PublicHostname:                  getenv("LANQIN_PUBLIC_HOSTNAME", "mail.lanqin.local"),
 		PublicBaseURL:                   getenv("LANQIN_PUBLIC_BASE_URL", "http://localhost:5173"),
@@ -108,6 +116,12 @@ func LoadConfig() Config {
 		ExternalIMAPGmailClientSecret:   getenv("LANQIN_EXTERNAL_IMAP_GMAIL_CLIENT_SECRET", ""),
 		ExternalIMAPOutlookClientID:     getenv("LANQIN_EXTERNAL_IMAP_OUTLOOK_CLIENT_ID", ""),
 		ExternalIMAPOutlookClientSecret: getenv("LANQIN_EXTERNAL_IMAP_OUTLOOK_CLIENT_SECRET", ""),
+		TelegramMailEnabled:             getenvBool("LANQIN_TELEGRAM_MAIL_ENABLED", false),
+		TelegramBotToken:                getenv("LANQIN_TELEGRAM_BOT_TOKEN", ""),
+		TelegramPrivateChatID:           getenv("LANQIN_TELEGRAM_PRIVATE_CHAT_ID", ""),
+		TelegramBodyMode:                normalizeTelegramBodyMode(getenv("LANQIN_TELEGRAM_BODY_MODE", "summary")),
+		TelegramMailboxIDs:              getenv("LANQIN_TELEGRAM_MAILBOX_IDS", ""),
+		TelegramIncludeUnregistered:     getenvBool("LANQIN_TELEGRAM_INCLUDE_UNREGISTERED", false),
 		MailTranslateEnabled:            getenvBool("LANQIN_MAIL_TRANSLATE_ENABLED", true),
 		MailTranslateMaxChars:           getenvInt("LANQIN_MAIL_TRANSLATE_MAX_CHARS", 8000),
 		DeliveryWebhookSecret:           getenv("LANQIN_DELIVERY_WEBHOOK_SECRET", ""),

apps/api/internal/app/dns_handlers.go

@@ -70,7 +70,7 @@ func (a *App) checkDNS(ctx context.Context, d *Domain) DNSCheckResult {
 
 	dkimName := d.DKIMSelector + "._domainkey." + d.Name
 	dkimTXT, _ := resolver.LookupTXT(ctx, dkimName)
-	checks["dkim"] = txtContains(dkimTXT, "v=DKIM1", "DKIM 记录存在", "未找到 DKIM 记录")
+	checks["dkim"] = checkDKIMRecord(dkimTXT, d.DKIMPublicKey)
 
 	dmarcTXT, _ := resolver.LookupTXT(ctx, "_dmarc."+d.Name)
 	checks["dmarc"] = txtContains(dmarcTXT, "v=DMARC1", "DMARC 记录存在", "未找到 DMARC 记录")
@@ -85,6 +85,42 @@ func (a *App) checkDNS(ctx context.Context, d *Domain) DNSCheckResult {
 	return DNSCheckResult{Domain: d.Name, Status: status, Checks: checks}
 }
 
+func checkDKIMRecord(records []string, expectedPublicKey string) DNSCheckStatus {
+	found := append([]string{}, records...)
+	expectedPublicKey = compactDKIMPublicKey(expectedPublicKey)
+	dkimFound := false
+	for _, record := range records {
+		tags := map[string]string{}
+		for _, part := range strings.Split(record, ";") {
+			key, value, ok := strings.Cut(part, "=")
+			if !ok {
+				continue
+			}
+			tags[strings.ToLower(strings.TrimSpace(key))] = strings.TrimSpace(value)
+		}
+		if !strings.EqualFold(tags["v"], "DKIM1") {
+			continue
+		}
+		dkimFound = true
+		if expectedPublicKey != "" && compactDKIMPublicKey(tags["p"]) == expectedPublicKey {
+			return DNSCheckStatus{OK: true, Message: "DKIM 公钥匹配", Found: found}
+		}
+	}
+	if dkimFound {
+		return DNSCheckStatus{OK: false, Message: "DKIM 公钥与后台生成的记录不一致", Found: found}
+	}
+	return DNSCheckStatus{OK: false, Message: "未找到 DKIM 记录", Found: found}
+}
+
+func compactDKIMPublicKey(value string) string {
+	return strings.Map(func(r rune) rune {
+		if r == ' ' || r == '\t' || r == '\r' || r == '\n' {
+			return -1
+		}
+		return r
+	}, value)
+}
+
 func txtContains(records []string, needle, okMsg, failMsg string) DNSCheckStatus {
 	found := append([]string{}, records...)
 	for _, item := range records {

apps/api/internal/app/external_imap.go

@@ -1181,6 +1181,9 @@ func (a *App) syncExternalIMAPFolder(ctx context.Context, account externalIMAPAc
 			if err := a.writeStoredMessageToMaildir(ctx, msgID, stored, attachments); err != nil {
 				a.log.Warn("failed to write external imap message to maildir", "message", msgID, "error", err)
 			}
+			if state.Initialized && strings.EqualFold(localFolderName, "Inbox") {
+				a.enqueueTelegramMailNotification(ctx, msgID, stored, attachments)
+			}
 			imported++
 		} else {
 			skipped++
@@ -1194,12 +1197,15 @@ func (a *App) syncExternalIMAPFolder(ctx context.Context, account externalIMAPAc
 }
 
 type externalIMAPFolderState struct {
-	LastUID uint32
+	LastUID     uint32
+	Initialized bool
 }
 
 func (a *App) loadExternalIMAPFolderState(ctx context.Context, accountID, folder string) externalIMAPFolderState {
 	var state externalIMAPFolderState
-	_ = a.db.QueryRowContext(ctx, `SELECT last_uid FROM external_imap_folder_states WHERE account_id=? AND remote_folder=?`, accountID, folder).Scan(&state.LastUID)
+	if err := a.db.QueryRowContext(ctx, `SELECT last_uid FROM external_imap_folder_states WHERE account_id=? AND remote_folder=?`, accountID, folder).Scan(&state.LastUID); err == nil {
+		state.Initialized = true
+	}
 	return state
 }
 

apps/api/internal/app/forwarding_delivery.go

@@ -138,10 +138,7 @@ func (a *App) inboundForwardingTargets(ctx context.Context, mailboxID string) (t
 	if err != nil {
 		return nil, "", "", err
 	}
-	targets := forwardingTargetsFromStored(mailboxTarget, mailboxTargetsJSON)
-	if len(targets) == 0 {
-		targets = forwardingTargetsFromStored(accountTarget, accountTargetsJSON)
-	}
+	targets := dedupeEmails(append(forwardingTargetsFromStored(accountTarget, accountTargetsJSON), forwardingTargetsFromStored(mailboxTarget, mailboxTargetsJSON)...))
 	if len(targets) == 0 {
 		return nil, userID, mailboxAddress, nil
 	}

apps/api/internal/app/forwarding_handlers.go

@@ -165,7 +165,7 @@ func (a *App) handleVerifyForwardingEmail(w http.ResponseWriter, r *http.Request
 		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")
+	a.renderForwardingVerificationPage(w, http.StatusOK, true, email, "该邮箱已通过转发验证")
 }
 
 func (a *App) handleDeleteForwardingVerifiedEmail(w http.ResponseWriter, r *http.Request) {
@@ -439,14 +439,18 @@ func (a *App) renderForwardingVerificationPage(w http.ResponseWriter, status int
 	title := "邮箱转发验证"
 	heading := "验证失败"
 	color := "#dc2626"
+	statusMark := "!"
+	closingMessage := "请联系验证发起人重新发送链接"
 	if ok {
 		heading = "验证完成"
-		color = "#2563eb"
+		color = "#16a34a"
+		statusMark = "✓"
+		closingMessage = "验证结果已记录，可以关闭此页面"
 	}
 	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)
+	_, _ = 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:8px;padding:34px 30px;box-shadow:0 18px 45px rgba(15,23,42,.08)"><div aria-hidden="true" style="display:grid;place-items:center;width:44px;height:44px;margin:0 0 20px;border-radius:50%%;background:%s;color:white;font-size:24px;font-weight:700">%s</div><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 24px;font-size:15px;color:#64748b;word-break:break-all">%s</p><p style="margin:0;padding-top:20px;border-top:1px solid #e2e8f0;font-size:15px;color:#64748b">%s</p></section></main></body></html>`,
+		title, color, statusMark, heading, htmlEscape(message), htmlEscape(email), htmlEscape(closingMessage))
 }
 
 func (a *App) cleanForwardingVerificationEmail(w http.ResponseWriter, r *http.Request, userID, value string) (string, bool) {

apps/api/internal/app/imap_metadata.go

@@ -76,6 +76,10 @@ func (a *App) migrateFolderSortOrder(ctx context.Context) error {
 	return nil
 }
 
+func (a *App) migrateFolderIcons(ctx context.Context) error {
+	return a.ensureTableColumn(ctx, "folders", "icon", `ALTER TABLE folders ADD COLUMN icon TEXT NOT NULL DEFAULT 'folder'`)
+}
+
 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 {

apps/api/internal/app/mail_handlers.go

@@ -1,12 +1,14 @@
 package app
 
 import (
+	"bytes"
 	"context"
 	"database/sql"
 	"encoding/base64"
 	"encoding/json"
 	"errors"
 	"fmt"
+	"image/png"
 	"io"
 	"net/http"
 	"net/textproto"
@@ -98,12 +100,12 @@ func (a *App) handleMailFolders(w http.ResponseWriter, r *http.Request) {
 		respondError(w, http.StatusNotFound, "mailbox not found")
 		return
 	}
-	rows, err := a.db.QueryContext(r.Context(), `SELECT f.id,f.name,f.role,
+	rows, err := a.db.QueryContext(r.Context(), `SELECT f.id,f.name,f.role,f.icon,
 		COALESCE(SUM(CASE WHEN m.is_read=0 THEN 1 ELSE 0 END),0) AS unread,
 		COUNT(m.id) AS total,
 		f.sort_order,f.uid_validity,f.uid_next,f.highest_modseq
 		FROM folders f LEFT JOIN messages m ON m.folder_id=f.id
-		WHERE f.mailbox_id=? GROUP BY f.id,f.name,f.role,f.sort_order,f.uid_validity,f.uid_next,f.highest_modseq
+		WHERE f.mailbox_id=? GROUP BY f.id,f.name,f.role,f.icon,f.sort_order,f.uid_validity,f.uid_next,f.highest_modseq
 		ORDER BY CASE
 			WHEN lower(f.name)='inbox' THEN 1000
 			WHEN lower(f.name)='sent' THEN 5000
@@ -121,7 +123,7 @@ func (a *App) handleMailFolders(w http.ResponseWriter, r *http.Request) {
 	items := []MailFolder{}
 	for rows.Next() {
 		var f MailFolder
-		if err := rows.Scan(&f.ID, &f.Name, &f.Role, &f.UnreadCount, &f.TotalCount, &f.SortOrder, &f.UIDValidity, &f.UIDNext, &f.HighestModSeq); err != nil {
+		if err := rows.Scan(&f.ID, &f.Name, &f.Role, &f.Icon, &f.UnreadCount, &f.TotalCount, &f.SortOrder, &f.UIDValidity, &f.UIDNext, &f.HighestModSeq); err != nil {
 			respondError(w, http.StatusInternalServerError, "failed to scan folders")
 			return
 		}
@@ -132,7 +134,7 @@ func (a *App) handleMailFolders(w http.ResponseWriter, r *http.Request) {
 
 func (a *App) handleAllMailFolders(w http.ResponseWriter, r *http.Request) {
 	user := currentUser(r)
-	rows, err := a.db.QueryContext(r.Context(), `SELECT 'all-' || lower(f.name),f.name,f.role,
+	rows, err := a.db.QueryContext(r.Context(), `SELECT 'all-' || lower(f.name),f.name,f.role,MIN(f.icon),
 		COALESCE(SUM(CASE WHEN m.is_read=0 THEN 1 ELSE 0 END),0) AS unread,
 		COUNT(m.id) AS total,
 		MIN(f.sort_order),MAX(f.uid_validity),MAX(f.uid_next),MAX(f.highest_modseq)
@@ -158,7 +160,7 @@ func (a *App) handleAllMailFolders(w http.ResponseWriter, r *http.Request) {
 	items := []MailFolder{}
 	for rows.Next() {
 		var f MailFolder
-		if err := rows.Scan(&f.ID, &f.Name, &f.Role, &f.UnreadCount, &f.TotalCount, &f.SortOrder, &f.UIDValidity, &f.UIDNext, &f.HighestModSeq); err != nil {
+		if err := rows.Scan(&f.ID, &f.Name, &f.Role, &f.Icon, &f.UnreadCount, &f.TotalCount, &f.SortOrder, &f.UIDValidity, &f.UIDNext, &f.HighestModSeq); err != nil {
 			respondError(w, http.StatusInternalServerError, "failed to scan folders")
 			return
 		}
@@ -264,13 +266,9 @@ func (a *App) handleReorderMailFolders(w http.ResponseWriter, r *http.Request) {
 }
 
 func (a *App) handleCreateMailFolder(w http.ResponseWriter, r *http.Request) {
-	mb, err := a.mailboxForCurrentUser(r)
-	if err != nil {
-		respondError(w, http.StatusNotFound, "mailbox not found")
-		return
-	}
 	var req struct {
 		Name string `json:"name"`
+		Icon string `json:"icon"`
 	}
 	if err := decodeJSON(r, &req); err != nil {
 		badRequest(w, err)
@@ -285,7 +283,49 @@ func (a *App) handleCreateMailFolder(w http.ResponseWriter, r *http.Request) {
 		badRequest(w, errors.New("system folder already exists"))
 		return
 	}
-	folderID, err := a.ensureCustomFolder(r.Context(), mb.ID, name)
+	icon := folderIconForName(name, req.Icon)
+	if isAllMailboxID(r.URL.Query().Get("mailboxId")) {
+		user := currentUser(r)
+		rows, err := a.db.QueryContext(r.Context(), `SELECT id FROM mailboxes WHERE user_id=? AND status='active' ORDER BY created_at,id`, user.ID)
+		if err != nil {
+			respondError(w, http.StatusInternalServerError, "failed to load mailboxes")
+			return
+		}
+		mailboxIDs := []string{}
+		for rows.Next() {
+			var mailboxID string
+			if err := rows.Scan(&mailboxID); err != nil {
+				rows.Close()
+				respondError(w, http.StatusInternalServerError, "failed to scan mailboxes")
+				return
+			}
+			mailboxIDs = append(mailboxIDs, mailboxID)
+		}
+		if err := rows.Err(); err != nil {
+			rows.Close()
+			respondError(w, http.StatusInternalServerError, "failed to scan mailboxes")
+			return
+		}
+		rows.Close()
+		if len(mailboxIDs) == 0 {
+			respondError(w, http.StatusNotFound, "mailbox not found")
+			return
+		}
+		for _, mailboxID := range mailboxIDs {
+			if _, err := a.ensureCustomFolder(r.Context(), mailboxID, name, icon); err != nil {
+				respondError(w, http.StatusInternalServerError, "failed to create folder")
+				return
+			}
+		}
+		respondJSON(w, http.StatusCreated, MailFolder{ID: "all-" + strings.ToLower(name), Name: name, Role: strings.ToLower(name), Icon: icon, SortOrder: customFolderDefaultSortOrderBase})
+		return
+	}
+	mb, err := a.mailboxForCurrentUser(r)
+	if err != nil {
+		respondError(w, http.StatusNotFound, "mailbox not found")
+		return
+	}
+	folderID, err := a.ensureCustomFolder(r.Context(), mb.ID, name, icon)
 	if err != nil {
 		respondError(w, http.StatusInternalServerError, "failed to create folder")
 		return
@@ -299,16 +339,20 @@ func (a *App) handleCreateMailFolder(w http.ResponseWriter, r *http.Request) {
 }
 
 func (a *App) handleDeleteMailFolder(w http.ResponseWriter, r *http.Request) {
-	mb, err := a.mailboxForCurrentUser(r)
-	if err != nil {
-		respondError(w, http.StatusNotFound, "mailbox not found")
-		return
-	}
 	folderID := strings.TrimSpace(chi.URLParam(r, "id"))
 	if folderID == "" {
 		badRequest(w, errors.New("folder id is required"))
 		return
 	}
+	if isAllMailboxID(r.URL.Query().Get("mailboxId")) {
+		a.handleDeleteAllMailFolders(w, r, folderID)
+		return
+	}
+	mb, err := a.mailboxForCurrentUser(r)
+	if err != nil {
+		respondError(w, http.StatusNotFound, "mailbox not found")
+		return
+	}
 	var folderName string
 	if err := a.db.QueryRowContext(r.Context(), `SELECT name FROM folders WHERE id=? AND mailbox_id=?`, folderID, mb.ID).Scan(&folderName); err != nil {
 		if errors.Is(err, sql.ErrNoRows) {
@@ -378,8 +422,197 @@ func (a *App) handleDeleteMailFolder(w http.ResponseWriter, r *http.Request) {
 	respondJSON(w, http.StatusOK, map[string]any{"ok": true, "moved": len(messageIDs)})
 }
 
-func (a *App) ensureCustomFolder(ctx context.Context, mailboxID, name string) (string, error) {
-	return a.ensureFolder(ctx, mailboxID, name)
+func (a *App) handleDeleteAllMailFolders(w http.ResponseWriter, r *http.Request, folderID string) {
+	folderName := strings.TrimSpace(r.URL.Query().Get("folderName"))
+	if folderName == "" && strings.HasPrefix(strings.ToLower(folderID), "all-") {
+		folderName = strings.TrimSpace(folderID[4:])
+	}
+	name, err := normalizeCustomFolderName(folderName)
+	if err != nil {
+		badRequest(w, err)
+		return
+	}
+	if isSystemFolderName(name) {
+		badRequest(w, errors.New("system folders cannot be deleted"))
+		return
+	}
+	user := currentUser(r)
+	type folderTarget struct {
+		folderID  string
+		mailboxID string
+		inboxID   string
+	}
+	rows, err := a.db.QueryContext(r.Context(), `SELECT f.id,f.mailbox_id FROM folders f JOIN mailboxes mb ON mb.id=f.mailbox_id WHERE mb.user_id=? AND mb.status='active' AND lower(f.name)=lower(?)`, user.ID, name)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load folders")
+		return
+	}
+	targets := []folderTarget{}
+	for rows.Next() {
+		var target folderTarget
+		if err := rows.Scan(&target.folderID, &target.mailboxID); err != nil {
+			rows.Close()
+			respondError(w, http.StatusInternalServerError, "failed to scan folders")
+			return
+		}
+		targets = append(targets, target)
+	}
+	if err := rows.Err(); err != nil {
+		rows.Close()
+		respondError(w, http.StatusInternalServerError, "failed to scan folders")
+		return
+	}
+	rows.Close()
+	if len(targets) == 0 {
+		respondError(w, http.StatusNotFound, "folder not found")
+		return
+	}
+	for i := range targets {
+		targets[i].inboxID, err = a.ensureFolder(r.Context(), targets[i].mailboxID, "Inbox")
+		if err != nil {
+			respondError(w, http.StatusInternalServerError, "failed to load inbox")
+			return
+		}
+	}
+	tx, err := a.db.BeginTx(r.Context(), nil)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to delete folder")
+		return
+	}
+	defer tx.Rollback()
+	now := a.now().UTC().Format(time.RFC3339Nano)
+	moved := 0
+	for _, target := range targets {
+		messageRows, err := tx.QueryContext(r.Context(), `SELECT id FROM messages WHERE mailbox_id=? AND folder_id=? ORDER BY received_at,id`, target.mailboxID, target.folderID)
+		if err != nil {
+			respondError(w, http.StatusInternalServerError, "failed to load folder messages")
+			return
+		}
+		messageIDs := []string{}
+		for messageRows.Next() {
+			var messageID string
+			if err := messageRows.Scan(&messageID); err != nil {
+				messageRows.Close()
+				respondError(w, http.StatusInternalServerError, "failed to scan folder messages")
+				return
+			}
+			messageIDs = append(messageIDs, messageID)
+		}
+		if err := messageRows.Err(); err != nil {
+			messageRows.Close()
+			respondError(w, http.StatusInternalServerError, "failed to scan folder messages")
+			return
+		}
+		messageRows.Close()
+		for _, messageID := range messageIDs {
+			meta, err := a.nextIMAPMetadata(r.Context(), tx, target.inboxID)
+			if err != nil {
+				respondError(w, http.StatusInternalServerError, "failed to allocate message uid")
+				return
+			}
+			if _, err := tx.ExecContext(r.Context(), `UPDATE messages SET folder_id=?,imap_uid=?,imap_modseq=?,updated_at=? WHERE id=?`, target.inboxID, meta.UID, meta.ModSeq, now, messageID); err != nil {
+				respondError(w, http.StatusInternalServerError, "failed to move folder messages")
+				return
+			}
+			moved++
+		}
+		if _, err := tx.ExecContext(r.Context(), `DELETE FROM folders WHERE id=? AND mailbox_id=?`, target.folderID, target.mailboxID); err != nil {
+			respondError(w, http.StatusInternalServerError, "failed to delete folder")
+			return
+		}
+	}
+	if err := tx.Commit(); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to delete folder")
+		return
+	}
+	for _, target := range targets {
+		_, _ = a.bumpFolderModSeq(r.Context(), target.inboxID)
+	}
+	respondJSON(w, http.StatusOK, map[string]any{"ok": true, "moved": moved})
+}
+
+func (a *App) ensureCustomFolder(ctx context.Context, mailboxID, name, icon string) (string, error) {
+	var existingID string
+	err := a.db.QueryRowContext(ctx, `SELECT id FROM folders WHERE mailbox_id=? AND lower(name)=lower(?)`, mailboxID, name).Scan(&existingID)
+	if err == nil && (strings.TrimSpace(icon) == "" || strings.EqualFold(strings.TrimSpace(icon), "auto")) {
+		return existingID, nil
+	}
+	if err != nil && !errors.Is(err, sql.ErrNoRows) {
+		return "", err
+	}
+	id, err := a.ensureFolder(ctx, mailboxID, name)
+	if err != nil {
+		return "", err
+	}
+	_, err = a.db.ExecContext(ctx, `UPDATE folders SET icon=? WHERE id=? AND mailbox_id=?`, folderIconForName(name, icon), id, mailboxID)
+	return id, err
+}
+
+func folderIconForName(name, requested string) string {
+	if icon := strings.TrimSpace(requested); icon != "" && !strings.EqualFold(icon, "auto") {
+		return normalizeFolderIcon(icon)
+	}
+	value := strings.ToLower(strings.TrimSpace(name))
+	for _, match := range []struct {
+		icon  string
+		terms []string
+	}{
+		{"netflix", []string{"netflix", "奈飞", "网飞"}},
+		{"chatgpt", []string{"chatgpt", "openai", "gpt"}},
+		{"receipt", []string{"账单", "发票", "收据", "bill", "invoice", "receipt"}},
+		{"shopping", []string{"购物", "订单", "快递", "shop", "order", "delivery"}},
+		{"plane", []string{"旅行", "旅游", "机票", "酒店", "travel", "trip", "flight", "hotel"}},
+		{"graduation", []string{"学习", "教育", "课程", "学校", "study", "school", "course"}},
+		{"users", []string{"联系人", "团队", "用户", "contact", "team", "people"}},
+		{"briefcase", []string{"工作", "项目", "客户", "work", "project", "business", "client"}},
+		{"heart", []string{"收藏", "喜欢", "favorite", "favourite"}},
+		{"star", []string{"重要", "紧急", "important", "urgent"}},
+		{"shield", []string{"安全", "验证", "密码", "登录", "security", "verify", "password", "login"}},
+		{"bell", []string{"提醒", "通知", "remind", "notification"}},
+		{"mail", []string{"邮件", "邮箱", "mail", "email"}},
+	} {
+		for _, term := range match.terms {
+			if folderNameContainsTerm(value, term) {
+				return match.icon
+			}
+		}
+	}
+	return "folder"
+}
+
+func folderNameContainsTerm(value, term string) bool {
+	if term != "gpt" {
+		return strings.Contains(value, term)
+	}
+	for _, token := range strings.FieldsFunc(value, func(r rune) bool {
+		return (r < 'a' || r > 'z') && (r < '0' || r > '9')
+	}) {
+		if token == term {
+			return true
+		}
+	}
+	return false
+}
+
+func normalizeFolderIcon(raw string) string {
+	icon := strings.TrimSpace(raw)
+	const customPrefix = "data:image/png;base64,"
+	if strings.HasPrefix(icon, customPrefix) {
+		data, err := base64.StdEncoding.DecodeString(strings.TrimPrefix(icon, customPrefix))
+		config, configErr := png.DecodeConfig(bytes.NewReader(data))
+		validDimensions := config.Width > 0 && config.Width <= 128 && config.Height > 0 && config.Height <= 128
+		if err == nil && configErr == nil && validDimensions && len(data) <= 32*1024 {
+			return icon
+		}
+		return "folder"
+	}
+	icon = strings.ToLower(icon)
+	switch icon {
+	case "folder", "mail", "briefcase", "users", "receipt", "shopping", "plane", "graduation", "heart", "star", "bell", "shield", "tag", "netflix", "chatgpt":
+		return icon
+	default:
+		return "folder"
+	}
 }
 
 func (a *App) nextCustomFolderSortOrder(ctx context.Context, mailboxID string) (int, error) {
@@ -397,11 +630,12 @@ func (a *App) handleMailMessages(w http.ResponseWriter, r *http.Request) {
 	if isAllMailboxID(r.URL.Query().Get("mailboxId")) {
 		user := currentUser(r)
 		if labelID := strings.TrimSpace(r.URL.Query().Get("labelId")); labelID != "" {
-			if !a.labelBelongsToUser(r.Context(), labelID, user.ID) {
+			labelName, ok := a.labelNameForUser(r.Context(), labelID, user.ID)
+			if !ok {
 				respondError(w, http.StatusNotFound, "label not found")
 				return
 			}
-			a.respondMailMessageList(w, r, `EXISTS (SELECT 1 FROM mailboxes mb WHERE mb.id=m.mailbox_id AND mb.user_id=? AND mb.status='active') AND EXISTS (SELECT 1 FROM message_labels ml WHERE ml.message_id=m.id AND ml.label_id=?)`, []any{user.ID, labelID})
+			a.respondMailMessageList(w, r, `EXISTS (SELECT 1 FROM mailboxes mb WHERE mb.id=m.mailbox_id AND mb.user_id=? AND mb.status='active') AND EXISTS (SELECT 1 FROM message_labels ml JOIN mail_labels l ON l.id=ml.label_id WHERE ml.message_id=m.id AND lower(l.name)=lower(?))`, []any{user.ID, labelName})
 			return
 		}
 		folder := r.URL.Query().Get("folder")
@@ -982,6 +1216,7 @@ func (a *App) sendMailWithSource(ctx context.Context, user *User, mb *Mailbox, r
 			copyMsg.IsRead = false
 			if copyID, err := a.insertMessage(ctx, copyMsg, req.Attachments); err == nil {
 				_ = a.writeStoredMessageToMaildir(ctx, copyID, copyMsg, req.Attachments)
+				a.enqueueTelegramMailNotification(ctx, copyID, copyMsg, req.Attachments)
 			}
 			continue
 		}
@@ -995,6 +1230,7 @@ func (a *App) sendMailWithSource(ctx context.Context, user *User, mb *Mailbox, r
 				copyMsg.IsRead = false
 				if copyID, err := a.insertMessage(ctx, copyMsg, req.Attachments); err == nil {
 					_ = a.writeStoredMessageToMaildir(ctx, copyID, copyMsg, req.Attachments)
+					a.enqueueTelegramMailNotification(ctx, copyID, copyMsg, req.Attachments)
 				}
 			}
 			continue
@@ -1006,12 +1242,16 @@ func (a *App) sendMailWithSource(ctx context.Context, user *User, mb *Mailbox, r
 		copyMsg := base
 		copyMsg.MailboxID = rcptMailbox.ID
 		copyMsg.FolderID = inboxID
+		copyMsg.RecipientAddr = normalizeEmail(rcpt)
 		copyMsg.MessageUID = newID("uid")
 		copyMsg.IsRead = false
 		if inboxMsgID, err := a.insertMessage(ctx, copyMsg, req.Attachments); err == nil {
 			_ = a.writeStoredMessageToMaildir(ctx, inboxMsgID, copyMsg, req.Attachments)
 			a.applyInboundControls(ctx, inboxMsgID, rcptMailbox.ID, copyMsg.From, copyMsg.Subject)
 			a.processInboundForwarding(ctx, inboxMsgID, rcptMailbox.ID, mimeBytes)
+			if a.shouldNotifyTelegramMessage(ctx, inboxMsgID) {
+				a.enqueueTelegramMailNotification(ctx, inboxMsgID, copyMsg, req.Attachments)
+			}
 		}
 	}
 
@@ -2007,15 +2247,83 @@ func (a *App) handleMove(w http.ResponseWriter, r *http.Request) {
 	respondJSON(w, http.StatusOK, map[string]any{"ok": true})
 }
 
+func (a *App) handleBulkMove(w http.ResponseWriter, r *http.Request) {
+	var req struct {
+		IDs    []string `json:"ids"`
+		Folder string   `json:"folder"`
+	}
+	if err := decodeJSON(r, &req); err != nil {
+		badRequest(w, err)
+		return
+	}
+	folder, err := normalizeFolderNameForUser(req.Folder)
+	if err != nil {
+		badRequest(w, err)
+		return
+	}
+	ids := make([]string, 0, len(req.IDs))
+	seen := map[string]bool{}
+	for _, id := range req.IDs {
+		id = strings.TrimSpace(id)
+		if id == "" || seen[id] {
+			continue
+		}
+		seen[id] = true
+		ids = append(ids, id)
+	}
+	if len(ids) == 0 {
+		badRequest(w, errors.New("请选择要移动的邮件"))
+		return
+	}
+	type itemResult struct {
+		ID        string `json:"id"`
+		MailboxID string `json:"mailboxId,omitempty"`
+		OK        bool   `json:"ok"`
+		Message   string `json:"message"`
+	}
+	results := make([]itemResult, 0, len(ids))
+	folderByMailbox := map[string]string{}
+	moved := 0
+	for _, id := range ids {
+		msg, err := a.loadMessageForRequest(r, id, false)
+		if err != nil {
+			results = append(results, itemResult{ID: id, OK: false, Message: "邮件不存在或无权访问"})
+			continue
+		}
+		folderID := folderByMailbox[msg.MailboxID]
+		if folderID == "" {
+			folderID, err = a.ensureFolder(r.Context(), msg.MailboxID, folder)
+			if err != nil {
+				results = append(results, itemResult{ID: id, MailboxID: msg.MailboxID, OK: false, Message: "目标文件夹创建失败"})
+				continue
+			}
+			folderByMailbox[msg.MailboxID] = folderID
+		}
+		if err := a.moveMessageMaildir(r.Context(), msg.ID, folderID); err != nil {
+			a.log.Warn("bulk move message failed", "messageID", msg.ID, "mailboxID", msg.MailboxID, "folder", folder, "error", err)
+			results = append(results, itemResult{ID: id, MailboxID: msg.MailboxID, OK: false, Message: "移动失败，请稍后重试"})
+			continue
+		}
+		moved++
+		results = append(results, itemResult{ID: id, MailboxID: msg.MailboxID, OK: true, Message: "已移动"})
+	}
+	failed := len(results) - moved
+	message := fmt.Sprintf("已移动 %d 封邮件", moved)
+	if failed > 0 {
+		message = fmt.Sprintf("已移动 %d 封邮件，%d 封失败", moved, failed)
+	}
+	respondJSON(w, http.StatusOK, map[string]any{"ok": failed == 0, "moved": moved, "failed": failed, "message": message, "items": results})
+}
+
 func (a *App) folderByID(ctx context.Context, folderID, mailboxID string) (*MailFolder, error) {
-	row := a.db.QueryRowContext(ctx, `SELECT f.id,f.name,f.role,
+	row := a.db.QueryRowContext(ctx, `SELECT f.id,f.name,f.role,f.icon,
 		COALESCE(SUM(CASE WHEN m.is_read=0 THEN 1 ELSE 0 END),0) AS unread,
 		COUNT(m.id) AS total,
 		f.sort_order,f.uid_validity,f.uid_next,f.highest_modseq
 		FROM folders f LEFT JOIN messages m ON m.folder_id=f.id
-		WHERE f.id=? AND f.mailbox_id=? GROUP BY f.id,f.name,f.role,f.sort_order,f.uid_validity,f.uid_next,f.highest_modseq`, folderID, mailboxID)
+		WHERE f.id=? AND f.mailbox_id=? GROUP BY f.id,f.name,f.role,f.icon,f.sort_order,f.uid_validity,f.uid_next,f.highest_modseq`, folderID, mailboxID)
 	var f MailFolder
-	if err := row.Scan(&f.ID, &f.Name, &f.Role, &f.UnreadCount, &f.TotalCount, &f.SortOrder, &f.UIDValidity, &f.UIDNext, &f.HighestModSeq); err != nil {
+	if err := row.Scan(&f.ID, &f.Name, &f.Role, &f.Icon, &f.UnreadCount, &f.TotalCount, &f.SortOrder, &f.UIDValidity, &f.UIDNext, &f.HighestModSeq); err != nil {
 		return nil, err
 	}
 	return &f, nil
@@ -2382,7 +2690,7 @@ func (a *App) labelsForMailbox(ctx context.Context, mailboxID string) ([]MailLab
 		FROM mail_labels l LEFT JOIN message_labels ml ON ml.label_id=l.id
 		WHERE l.mailbox_id=?
 		GROUP BY l.id,l.mailbox_id,l.name,l.color
-		ORDER BY lower(l.name)`, mailboxID)
+		ORDER BY `+mailLabelOrderSQL("l")+`, lower(l.name)`, mailboxID)
 	if err != nil {
 		return nil, err
 	}
@@ -2399,13 +2707,13 @@ func (a *App) labelsForMailbox(ctx context.Context, mailboxID string) ([]MailLab
 }
 
 func (a *App) labelsForUser(ctx context.Context, userID string) ([]MailLabel, error) {
-	rows, err := a.db.QueryContext(ctx, `SELECT l.id,l.mailbox_id,l.name,l.color,COUNT(ml.message_id)
+	rows, err := a.db.QueryContext(ctx, `SELECT MIN(l.id),'',MIN(l.name),MIN(l.color),COUNT(ml.message_id)
 		FROM mail_labels l
 		JOIN mailboxes mb ON mb.id=l.mailbox_id
 		LEFT JOIN message_labels ml ON ml.label_id=l.id
 		WHERE mb.user_id=? AND mb.status='active'
-		GROUP BY l.id,l.mailbox_id,l.name,l.color
-		ORDER BY lower(l.name)`, userID)
+		GROUP BY lower(l.name)
+		ORDER BY `+mailLabelNameOrderSQL("MIN(l.name)")+`, lower(MIN(l.name))`, userID)
 	if err != nil {
 		return nil, err
 	}
@@ -2425,7 +2733,7 @@ func (a *App) labelsForMessage(ctx context.Context, messageID string) ([]MailLab
 	rows, err := a.db.QueryContext(ctx, `SELECT l.id,l.mailbox_id,l.name,l.color
 		FROM mail_labels l JOIN message_labels ml ON ml.label_id=l.id
 		WHERE ml.message_id=?
-		ORDER BY lower(l.name)`, messageID)
+		ORDER BY `+mailLabelOrderSQL("l")+`, lower(l.name)`, messageID)
 	if err != nil {
 		return nil, err
 	}
@@ -2456,7 +2764,7 @@ func (a *App) attachLabelsToMessages(ctx context.Context, items []MailMessage) e
 	rows, err := a.db.QueryContext(ctx, `SELECT ml.message_id,l.id,l.mailbox_id,l.name,l.color
 		FROM message_labels ml JOIN mail_labels l ON l.id=ml.label_id
 		WHERE ml.message_id IN (`+strings.Join(ids, ",")+`)
-		ORDER BY lower(l.name)`, args...)
+		ORDER BY `+mailLabelOrderSQL("l")+`, lower(l.name)`, args...)
 	if err != nil {
 		return err
 	}
@@ -2474,6 +2782,14 @@ func (a *App) attachLabelsToMessages(ctx context.Context, items []MailMessage) e
 	return rows.Err()
 }
 
+func mailLabelOrderSQL(alias string) string {
+	return mailLabelNameOrderSQL(alias + `.name`)
+}
+
+func mailLabelNameOrderSQL(expression string) string {
+	return `CASE ` + expression + ` WHEN '个人' THEN 10 WHEN '家人' THEN 20 WHEN '朋友' THEN 30 WHEN '工作' THEN 40 WHEN '重要' THEN 50 ELSE 100 END`
+}
+
 func (a *App) ensureLabel(ctx context.Context, mailboxID, name, color string) (MailLabel, error) {
 	name = normalizeLabelName(name)
 	if name == "" {
@@ -2517,6 +2833,14 @@ func (a *App) labelBelongsToUser(ctx context.Context, labelID, userID string) bo
 	return count > 0
 }
 
+func (a *App) labelNameForUser(ctx context.Context, labelID, userID string) (string, bool) {
+	var name string
+	if err := a.db.QueryRowContext(ctx, `SELECT l.name FROM mail_labels l JOIN mailboxes mb ON mb.id=l.mailbox_id WHERE l.id=? AND mb.user_id=? AND mb.status='active'`, labelID, userID).Scan(&name); err != nil {
+		return "", false
+	}
+	return name, true
+}
+
 func normalizeLabelName(name string) string {
 	name = strings.Join(strings.Fields(strings.TrimSpace(name)), " ")
 	if len([]rune(name)) > 32 {

apps/api/internal/app/mail_transfer_handlers.go

@@ -13,13 +13,20 @@ import (
 	"net/http"
 	"os"
 	"path/filepath"
-	"regexp"
 	"strings"
+	"time"
+	"unicode"
 )
 
 const maxMailImportBytes int64 = 256 << 20
 
-var exportFilenameUnsafe = regexp.MustCompile(`[^a-zA-Z0-9._-]+`)
+const maxSelectedMailExport = 200
+
+type exportedMessage struct {
+	raw     []byte
+	subject string
+	date    time.Time
+}
 
 func (a *App) handleExportMail(w http.ResponseWriter, r *http.Request) {
 	ids, err := a.exportMessageIDs(r)
@@ -43,19 +50,21 @@ func (a *App) handleExportMail(w http.ResponseWriter, r *http.Request) {
 
 	zw := zip.NewWriter(w)
 	usedNames := make(map[string]int, len(ids))
-	for index, id := range ids {
-		raw, subject, err := a.rawMessageForExport(r.Context(), id)
+	for _, id := range ids {
+		message, 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})
+		entryName := uniqueExportFilename(exportMessageFilename(message.subject, message.date), usedNames)
+		header := &zip.FileHeader{Name: entryName, Method: zip.Deflate}
+		header.SetModTime(message.date)
+		entry, err := zw.CreateHeader(header)
 		if err != nil {
 			_ = zw.Close()
 			return
 		}
-		if _, err := entry.Write(raw); err != nil {
+		if _, err := entry.Write(message.raw); err != nil {
 			_ = zw.Close()
 			return
 		}
@@ -74,6 +83,10 @@ func (a *App) exportMessageIDs(r *http.Request) ([]string, error) {
 	mailboxID := strings.TrimSpace(r.URL.Query().Get("mailboxId"))
 	where := []string{}
 	args := []any{}
+	selectedIDs, err := selectedExportMessageIDs(r)
+	if err != nil {
+		return nil, err
+	}
 
 	if view == "unknown" {
 		if user.Role != "admin" {
@@ -109,12 +122,29 @@ func (a *App) exportMessageIDs(r *http.Request) ([]string, error) {
 			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)
+			if isAllMailboxID(mailboxID) {
+				labelName, ok := a.labelNameForUser(r.Context(), labelID, user.ID)
+				if !ok {
+					return nil, sql.ErrNoRows
+				}
+				where = append(where, "EXISTS (SELECT 1 FROM message_labels ml JOIN mail_labels l ON l.id=ml.label_id WHERE ml.message_id=m.id AND lower(l.name)=lower(?))")
+				args = append(args, labelName)
+			} else {
+				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")
 		}
 	}
+	if len(selectedIDs) > 0 {
+		placeholders := make([]string, 0, len(selectedIDs))
+		for _, id := range selectedIDs {
+			placeholders = append(placeholders, "?")
+			args = append(args, id)
+		}
+		where = append(where, "m.id IN ("+strings.Join(placeholders, ",")+")")
+	}
 
 	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 {
@@ -132,40 +162,77 @@ func (a *App) exportMessageIDs(r *http.Request) ([]string, error) {
 	return ids, rows.Err()
 }
 
-func (a *App) rawMessageForExport(ctx context.Context, id string) ([]byte, string, error) {
+func selectedExportMessageIDs(r *http.Request) ([]string, error) {
+	values := r.URL.Query()["messageId"]
+	if len(values) == 0 {
+		return nil, nil
+	}
+	seen := make(map[string]struct{}, len(values))
+	ids := make([]string, 0, len(values))
+	for _, value := range values {
+		id := strings.TrimSpace(value)
+		if id == "" {
+			continue
+		}
+		if _, exists := seen[id]; exists {
+			continue
+		}
+		seen[id] = struct{}{}
+		ids = append(ids, id)
+		if len(ids) > maxSelectedMailExport {
+			return nil, fmt.Errorf("最多一次下载 %d 封邮件", maxSelectedMailExport)
+		}
+	}
+	return ids, nil
+}
+
+func (a *App) rawMessageForExport(ctx context.Context, id string) (exportedMessage, error) {
 	msg, err := a.storedMessageByID(ctx, id)
 	if err != nil {
-		return nil, "", err
+		return exportedMessage{}, err
+	}
+	exportDate := msg.ReceivedAt
+	if exportDate.IsZero() {
+		exportDate = messageDate(msg)
 	}
 	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
+				return exportedMessage{raw: raw, subject: msg.Subject, date: exportDate}, nil
 			}
 		}
 	}
 	attachments, err := a.attachmentInputsForMessage(ctx, id)
 	if err != nil {
-		return nil, "", err
+		return exportedMessage{}, 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
+	return exportedMessage{raw: raw, subject: msg.Subject, date: exportDate}, err
 }
 
-func exportMessageFilename(subject, id string, index int) string {
-	name := exportFilenameUnsafe.ReplaceAllString(strings.TrimSpace(subject), "-")
-	name = strings.Trim(name, ".-_")
+func exportMessageFilename(subject string, date time.Time) string {
+	name := strings.Map(func(r rune) rune {
+		if unicode.IsControl(r) || strings.ContainsRune(`<>:"/\\|?*`, r) {
+			return '-'
+		}
+		return r
+	}, strings.TrimSpace(subject))
+	name = strings.Trim(name, " .-_")
 	if name == "" {
-		name = "message"
+		name = "无主题"
 	}
-	if len(name) > 80 {
-		name = name[:80]
+	runes := []rune(name)
+	if len(runes) > 80 {
+		name = string(runes[:80])
 	}
-	return fmt.Sprintf("%04d-%s-%s.eml", index+1, name, id)
+	if date.IsZero() {
+		return name + ".eml"
+	}
+	return fmt.Sprintf("%s (%s).eml", name, date.Format("20060102"))
 }
 
 func uniqueExportFilename(name string, used map[string]int) string {

apps/api/internal/app/mail_transfer_handlers_test.go

@@ -5,11 +5,15 @@ import (
 	"bytes"
 	"encoding/json"
 	"io"
+	"mime"
 	"mime/multipart"
 	"net/http"
 	"net/http/httptest"
+	stdmail "net/mail"
+	"net/url"
 	"strings"
 	"testing"
+	"time"
 )
 
 func TestParseMBOXMultipleMessages(t *testing.T) {
@@ -65,7 +69,7 @@ func TestMailImportExportAndOwnership(t *testing.T) {
 		t.Fatalf("owner login=%d", code)
 	}
 
-	eml := []byte("From: sender@example.com\r\nTo: " + ownerMailbox.Address + "\r\nSubject: imported message\r\nDate: Tue, 2 Jan 2024 12:00:00 +0000\r\nMessage-ID: <imported@example.com>\r\nContent-Type: text/plain; charset=utf-8\r\n\r\nhello import")
+	eml := []byte("From: sender@example.com\r\nTo: " + ownerMailbox.Address + "\r\nSubject: 中文标题\r\nDate: Tue, 2 Jan 2024 12:00:00 +0000\r\nMessage-ID: <imported@example.com>\r\nContent-Type: text/plain; charset=utf-8\r\n\r\nhello import")
 	olderEML := []byte("From: sender@example.com\r\nTo: " + ownerMailbox.Address + "\r\nSubject: older imported message\r\nDate: Mon, 1 Jan 2024 12:00:00 +0000\r\nMessage-ID: <older-imported@example.com>\r\nContent-Type: text/plain; charset=utf-8\r\n\r\nolder import")
 	var imported struct {
 		Imported int      `json:"imported"`
@@ -79,9 +83,13 @@ func TestMailImportExportAndOwnership(t *testing.T) {
 	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) != 2 || list.Items[0].Subject != "imported message" || list.Items[1].Subject != "older imported message" {
+	if code := owner.do("GET", "/api/mail/messages?folder=Inbox&mailboxId="+ownerMailbox.ID, nil, &list); code != http.StatusOK || len(list.Items) != 2 || list.Items[0].Subject != "中文标题" || list.Items[1].Subject != "older imported message" {
 		t.Fatalf("list code=%d items=%+v", code, list.Items)
 	}
+	receivedAt := time.Date(2024, time.January, 3, 8, 30, 0, 0, time.UTC)
+	if _, err := a.db.Exec(`UPDATE messages SET received_at=? WHERE id=?`, receivedAt.Format(time.RFC3339Nano), list.Items[0].ID); err != nil {
+		t.Fatal(err)
+	}
 
 	status, archive := getMailExport(t, owner, "/api/mail/export?view=folder&folder=Inbox&mailboxId="+ownerMailbox.ID)
 	if status != http.StatusOK {
@@ -94,15 +102,47 @@ func TestMailImportExportAndOwnership(t *testing.T) {
 	if len(zr.File) != 2 {
 		t.Fatalf("zip entries=%d", len(zr.File))
 	}
+	if zr.File[0].Name != "中文标题 (20240103).eml" {
+		t.Fatalf("first filename=%q", zr.File[0].Name)
+	}
+	wantModified := receivedAt
+	if !zr.File[0].Modified.Equal(wantModified) {
+		t.Fatalf("first modified=%s want=%s", zr.File[0].Modified, wantModified)
+	}
 	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")) {
+	if err != nil {
 		t.Fatalf("exported message err=%v raw=%q", err, exported)
 	}
+	parsed, err := stdmail.ReadMessage(bytes.NewReader(exported))
+	if err != nil {
+		t.Fatal(err)
+	}
+	decodedSubject, err := new(mime.WordDecoder).DecodeHeader(parsed.Header.Get("Subject"))
+	if err != nil || decodedSubject != "中文标题" {
+		t.Fatalf("decoded subject=%q err=%v", decodedSubject, err)
+	}
+	messageDate, err := parsed.Header.Date()
+	if err != nil || !messageDate.Equal(time.Date(2024, time.January, 2, 12, 0, 0, 0, time.UTC)) {
+		t.Fatalf("message date=%s err=%v", messageDate, err)
+	}
+
+	selectedPath := "/api/mail/export?view=folder&folder=Inbox&mailboxId=" + ownerMailbox.ID + "&messageId=" + url.QueryEscape(list.Items[1].ID)
+	status, selectedArchive := getMailExport(t, owner, selectedPath)
+	if status != http.StatusOK {
+		t.Fatalf("selected export status=%d body=%q", status, selectedArchive)
+	}
+	selectedZip, err := zip.NewReader(bytes.NewReader(selectedArchive), int64(len(selectedArchive)))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(selectedZip.File) != 1 || selectedZip.File[0].Name != "older imported message (20240101).eml" {
+		t.Fatalf("selected entries=%v", exportEntryNames(selectedZip.File))
+	}
 
 	var denied map[string]any
 	if code := doMailImport(t, owner, otherMailbox.ID, "Inbox", map[string][]byte{"message.eml": eml}, &denied); code != http.StatusNotFound {
@@ -114,6 +154,64 @@ func TestMailImportExportAndOwnership(t *testing.T) {
 	}
 }
 
+func TestSelectedMailExportStillEnforcesOwnership(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, "export-owner", "Export Owner", "Password123!", nil)
+	otherMailbox := createTestMailbox(t, admin, domains.Items[0].ID, "export-other", "Export Other", "Password123!", nil)
+	owner := &testClient{t: t, server: ts}
+	other := &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)
+	}
+	if code := other.do("POST", "/api/auth/login", map[string]string{"email": otherMailbox.Address, "password": "Password123!"}, &login); code != http.StatusOK {
+		t.Fatalf("other login=%d", code)
+	}
+	otherEML := []byte("From: sender@example.com\r\nTo: " + otherMailbox.Address + "\r\nSubject: private message\r\nDate: Tue, 2 Jan 2024 12:00:00 +0000\r\nMessage-ID: <private@example.com>\r\n\r\nprivate")
+	var imported map[string]any
+	if code := doMailImport(t, other, otherMailbox.ID, "Inbox", map[string][]byte{"private.eml": otherEML}, &imported); code != http.StatusOK {
+		t.Fatalf("other import=%d response=%v", code, imported)
+	}
+	var otherList struct {
+		Items []MailMessage `json:"items"`
+	}
+	if code := other.do("GET", "/api/mail/messages?folder=Inbox&mailboxId="+otherMailbox.ID, nil, &otherList); code != http.StatusOK || len(otherList.Items) != 1 {
+		t.Fatalf("other list code=%d items=%d", code, len(otherList.Items))
+	}
+	path := "/api/mail/export?view=folder&folder=Inbox&mailboxId=" + ownerMailbox.ID + "&messageId=" + url.QueryEscape(otherList.Items[0].ID)
+	status, archive := getMailExport(t, owner, path)
+	if status != http.StatusOK {
+		t.Fatalf("cross-owner 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) != 0 {
+		t.Fatalf("cross-owner export leaked entries=%v", exportEntryNames(zr.File))
+	}
+}
+
+func exportEntryNames(files []*zip.File) []string {
+	names := make([]string, 0, len(files))
+	for _, file := range files {
+		names = append(names, file.Name)
+	}
+	return names
+}
+
 func doMailImport(t *testing.T, client *testClient, mailboxID, folder string, files map[string][]byte, out any) int {
 	t.Helper()
 	var body bytes.Buffer

apps/api/internal/app/mailbox_delete_test.go

@@ -0,0 +1,34 @@
+package app
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+)
+
+func TestAdminCanDeleteOwnLastMailboxWithoutDeletingAccount(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 mailboxes struct {
+		Items []Mailbox `json:"items"`
+	}
+	if code := admin.do("GET", "/api/mail/mailboxes", nil, &mailboxes); code != http.StatusOK || len(mailboxes.Items) != 1 {
+		t.Fatalf("mailboxes code=%d items=%d", code, len(mailboxes.Items))
+	}
+	if code := admin.do("DELETE", "/api/admin/mailboxes/"+mailboxes.Items[0].ID, nil, &map[string]any{}); code != http.StatusOK {
+		t.Fatalf("delete final mailbox code=%d", code)
+	}
+	if code := admin.do("GET", "/api/mail/mailboxes", nil, &mailboxes); code != http.StatusOK || len(mailboxes.Items) != 0 {
+		t.Fatalf("mailboxes after delete code=%d items=%d", code, len(mailboxes.Items))
+	}
+	var me map[string]any
+	if code := admin.do("GET", "/api/me", nil, &me); code != http.StatusOK {
+		t.Fatalf("account was not preserved code=%d", code)
+	}
+}

apps/api/internal/app/maildir_sync.go

@@ -292,7 +292,10 @@ func (a *App) syncUnregisteredMaildirFile(ctx context.Context, mb maildirMailbox
 		a.attachUnregisteredMaildirRawPathToExisting(ctx, path, msg.MessageID, msg.RecipientAddr)
 		return false, nil
 	}
-	_, err = a.insertMessage(ctx, msg, attachments)
+	id, err := a.insertMessage(ctx, msg, attachments)
+	if err == nil {
+		a.enqueueTelegramMailNotification(ctx, id, msg, attachments)
+	}
 	return err == nil, err
 }
 
@@ -333,6 +336,9 @@ func (a *App) syncMaildirFile(ctx context.Context, mb maildirMailbox, folder mai
 	}
 	msg.MailboxID = mb.ID
 	msg.FolderID = folder.ID
+	if strings.TrimSpace(msg.RecipientAddr) == "" {
+		msg.RecipientAddr = mb.Address
+	}
 	msg.IsRead, msg.IsStarred = maildirFlagsFromPath(path, folder.Name)
 	msg.RawPath = path
 	if msg.MessageUID == "" {
@@ -367,6 +373,9 @@ func (a *App) syncMaildirFile(ctx context.Context, mb maildirMailbox, folder mai
 	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)
+		if a.shouldNotifyTelegramMessage(ctx, id) {
+			a.enqueueTelegramMailNotification(ctx, id, msg, attachments)
+		}
 	}
 	return err == nil, err
 }
@@ -585,6 +594,9 @@ func (a *App) attachUnregisteredMaildirRawPathToExisting(ctx context.Context, ra
 
 func unregisteredRecipientFromMessage(msg storedMessage, domain string) string {
 	domain = normalizeDomain(domain)
+	if address := normalizeEmail(msg.RecipientAddr); strings.HasSuffix(address, "@"+domain) {
+		return address
+	}
 	for _, address := range append(append([]string{}, msg.To...), msg.CC...) {
 		address = normalizeEmail(address)
 		if strings.HasSuffix(address, "@"+domain) {
@@ -609,11 +621,18 @@ func (a *App) parseMaildirMessage(raw []byte, fallbackTo string) (storedMessage,
 	if len(to) == 0 {
 		to = []string{fallbackTo}
 	}
+	recipientAddr := originalMailRecipient(m.Header)
 	sentAt := parseMailDate(m.Header.Get("Date"))
 	parsed := &parsedMail{}
 	if err := parseMailPart(textproto.MIMEHeader(m.Header), m.Body, parsed); err != nil {
 		return storedMessage{}, nil, err
 	}
+	if looksLikeHTMLDocument(parsed.Text) {
+		if strings.TrimSpace(parsed.HTML) == "" {
+			parsed.HTML = parsed.Text
+		}
+		parsed.Text = telegramHTMLToText(parsed.Text)
+	}
 	bodyHTML := a.policy.Sanitize(parsed.HTML)
 	bodyText := parsed.Text
 	if strings.TrimSpace(bodyText) == "" {
@@ -629,6 +648,7 @@ func (a *App) parseMaildirMessage(raw []byte, fallbackTo string) (storedMessage,
 	return storedMessage{
 		MessageUID:     newID("uid"),
 		MessageID:      strings.TrimSpace(m.Header.Get("Message-Id")),
+		RecipientAddr:  recipientAddr,
 		Subject:        subject,
 		From:           from,
 		FromName:       fromName,
@@ -644,6 +664,21 @@ func (a *App) parseMaildirMessage(raw []byte, fallbackTo string) (storedMessage,
 	}, parsed.Attachments, nil
 }
 
+func originalMailRecipient(header netmail.Header) string {
+	for _, key := range []string{"X-Original-To", "Delivered-To", "Envelope-To", "Original-Recipient"} {
+		value := strings.TrimSpace(header.Get(key))
+		if key == "Original-Recipient" {
+			if _, suffix, ok := strings.Cut(value, ";"); ok {
+				value = strings.TrimSpace(suffix)
+			}
+		}
+		if address, _ := firstAddressParts(value); strings.Contains(address, "@") {
+			return address
+		}
+	}
+	return ""
+}
+
 func parseMailPart(header textproto.MIMEHeader, body io.Reader, parsed *parsedMail) error {
 	contentType := header.Get("Content-Type")
 	mediaType, params, err := mime.ParseMediaType(contentType)
@@ -682,6 +717,16 @@ func parseMailPart(header textproto.MIMEHeader, body io.Reader, parsed *parsedMa
 		parsed.Attachments = append(parsed.Attachments, AttachmentInput{Filename: filename, ContentType: mediaType, ContentBase64: base64.StdEncoding.EncodeToString(decoded)})
 		return nil
 	}
+	if strings.HasPrefix(strings.ToLower(mediaType), "text/") {
+		if charset := strings.TrimSpace(params["charset"]); charset != "" && !strings.EqualFold(charset, "utf-8") && !strings.EqualFold(charset, "us-ascii") {
+			if reader, decodeErr := charsetReader(charset, bytes.NewReader(decoded)); decodeErr == nil {
+				if converted, readErr := io.ReadAll(reader); readErr == nil {
+					decoded = converted
+				}
+			}
+		}
+		decoded = []byte(strings.ToValidUTF8(string(decoded), "�"))
+	}
 	switch strings.ToLower(mediaType) {
 	case "text/html":
 		if parsed.HTML == "" {

apps/api/internal/app/open_api_handlers.go

@@ -318,26 +318,9 @@ func (a *App) handleOpenAPIUpdateMailbox(w http.ResponseWriter, r *http.Request)
 
 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")
+		respondError(w, http.StatusInternalServerError, "加载邮箱邮件失败")
 		return
 	}
 	messageIDs := []string{}
@@ -353,11 +336,11 @@ func (a *App) handleOpenAPIDeleteMailbox(w http.ResponseWriter, r *http.Request)
 	}
 	res, err := a.db.ExecContext(r.Context(), `DELETE FROM mailboxes WHERE id=?`, id)
 	if err != nil {
-		respondError(w, http.StatusInternalServerError, "failed to delete mailbox")
+		respondError(w, http.StatusInternalServerError, "删除邮箱失败")
 		return
 	}
 	if affected, _ := res.RowsAffected(); affected == 0 {
-		respondError(w, http.StatusNotFound, "mailbox not found")
+		respondError(w, http.StatusNotFound, "邮箱不存在或已被删除")
 		return
 	}
 	respondJSON(w, http.StatusOK, map[string]any{"ok": true})
@@ -826,7 +809,7 @@ func (a *App) resolveMailboxOwnerTx(ctx context.Context, tx *sql.Tx, userID, own
 		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)
+	err := tx.QueryRowContext(ctx, `SELECT id FROM users WHERE email=? AND disabled=0`, email).Scan(&existing)
 	if err == nil {
 		return existing, nil
 	}

apps/api/internal/app/permission_group_handlers.go

@@ -146,8 +146,8 @@ func (a *App) handleUpdatePermissionGroup(w http.ResponseWriter, r *http.Request
 		respondError(w, http.StatusNotFound, "permission group not found")
 		return
 	}
-	if id == PermissionGroupSuperAdmin {
-		respondError(w, http.StatusForbidden, "super administrator group cannot be edited")
+	if intBool(existingSystem) {
+		respondError(w, http.StatusForbidden, "system permission groups cannot be edited")
 		return
 	}
 	var req struct {

apps/api/internal/app/permissions.go

@@ -316,15 +316,15 @@ var permissionCatalogItems = []PermissionInfo{
 	{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: PermissionUsersCreate, Label: "创建账号", Description: "创建普通账号并设置主登录邮箱、显示名称和状态。", Category: "账号管理"},
+	{Key: PermissionUsersUpdate, Label: "编辑账号", Description: "修改账号主登录邮箱、显示名称、状态、邮箱数量上限和自定义权限配置。", 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: PermissionGroupsView, Label: "查看权限配置", Description: "查看内置和自定义权限配置、权限目录和使用人数。", Category: "权限配置"},
+	{Key: PermissionGroupsCreate, Label: "创建权限配置", Description: "创建自定义权限配置。", Category: "权限配置"},
+	{Key: PermissionGroupsUpdate, Label: "编辑权限配置", Description: "修改自定义权限配置名称、说明、功能权限和额度。", Category: "权限配置"},
+	{Key: PermissionGroupsDelete, Label: "删除权限配置", Description: "删除未被账号使用的自定义权限配置。", Category: "权限配置"},
 
 	{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"},
@@ -455,7 +455,7 @@ func defaultPermissionGroups() []PermissionGroup {
 		{
 			ID:          PermissionGroupSuperAdmin,
 			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。",
+			Description: "拥有全部后台权限，由账号身份决定，不通过自定义权限配置分配。",
 			Permissions: allPermissionKeys(),
 			Limits:      PermissionLimits{},
 			System:      true,
@@ -1031,14 +1031,7 @@ func (a *App) permissionGroupByID(ctx context.Context, id string) (*PermissionGr
 }
 
 func (a *App) isDefaultAdminUser(u *User) bool {
-	if u == nil {
-		return false
-	}
-	if adminUsername := normalizeLoginName(a.config().AdminUsername); adminUsername != "" && !strings.Contains(adminUsername, "@") {
-		return strings.EqualFold(normalizeLoginName(u.LoginName), adminUsername)
-	}
-	adminEmail := normalizeEmail(a.config().AdminEmail)
-	return adminEmail != "" && strings.EqualFold(normalizeEmail(u.Email), adminEmail)
+	return u != nil && u.Role == "admin"
 }
 
 func sortPermissionGroups(items []PermissionGroup) {

apps/api/internal/app/personal_handlers.go

@@ -534,12 +534,16 @@ func (a *App) handleCreateRule(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	appliedCount := int64(0)
-	if req.ApplyToExisting && enabled {
-		appliedCount, _ = a.applyRuleToExistingMessages(r.Context(), user.ID, mailboxID, MailRule{
+	if req.ApplyToExisting {
+		appliedCount, err = a.applyRuleToExistingMessages(r.Context(), user.ID, mailboxID, MailRule{
 			ID: id, UserID: user.ID, MailboxID: mailboxID, Name: name, MatchMode: matchMode,
 			Conditions: conditions, Actions: actions, ApplyToExisting: req.ApplyToExisting, StopProcessing: req.StopProcessing,
 			FromContains: fromContains, SubjectContains: subjectContains, Action: action, Enabled: enabled,
 		})
+		if err != nil {
+			respondError(w, http.StatusInternalServerError, "rule saved but failed to apply to existing messages")
+			return
+		}
 	}
 	row := a.db.QueryRowContext(r.Context(), `SELECT id,user_id,mailbox_id,name,match_mode,conditions_json,actions_json,from_contains,subject_contains,action,apply_to_existing,stop_processing,enabled,created_at FROM mail_rules WHERE id=?`, id)
 	item, err := scanRule(row)
@@ -1330,7 +1334,9 @@ func (a *App) applyInboundControls(ctx context.Context, messageID, mailboxID, fr
 		if !ruleMatches(rule, msg) {
 			continue
 		}
-		_ = a.applyRuleActions(ctx, mailboxID, messageID, rule.Actions)
+		if err := a.applyRuleActions(ctx, mailboxID, messageID, rule.Actions); err != nil {
+			continue
+		}
 		if rule.StopProcessing {
 			break
 		}
@@ -1375,7 +1381,7 @@ type ruleMessage struct {
 func (a *App) ruleMessageByID(ctx context.Context, messageID string) (ruleMessage, bool) {
 	var msg ruleMessage
 	var toAddrs, ccAddrs, receivedAt string
-	err := a.db.QueryRowContext(ctx, `SELECT id,COALESCE(mailbox_id,''),trim(from_addr || ' ' || COALESCE(from_name,'')),to_addrs,cc_addrs,subject,snippet,body_text,size_bytes,received_at FROM messages WHERE id=?`, messageID).
+	err := a.db.QueryRowContext(ctx, `SELECT id,COALESCE(mailbox_id,''),from_addr,to_addrs,cc_addrs,subject,snippet,body_text,size_bytes,received_at FROM messages WHERE id=?`, messageID).
 		Scan(&msg.ID, &msg.MailboxID, &msg.From, &toAddrs, &ccAddrs, &msg.Subject, &msg.Snippet, &msg.BodyText, &msg.SizeBytes, &receivedAt)
 	if err != nil {
 		return ruleMessage{}, false
@@ -1407,7 +1413,7 @@ func (a *App) ruleAttachmentNames(ctx context.Context, messageID string) string
 		if err := rows.Scan(&filename, &contentType); err != nil {
 			return strings.Join(parts, " ")
 		}
-		parts = append(parts, filename, contentType)
+		parts = append(parts, filename)
 	}
 	return strings.Join(parts, " ")
 }
@@ -1453,15 +1459,23 @@ func normalizeRuleCondition(item MailRuleCondition) (MailRuleCondition, bool) {
 	if operator == "" {
 		operator = "contains"
 	}
-	switch operator {
-	case "contains", "not-contains", "equals", "not-equals", "starts-with", "ends-with":
-	case "gt", "gte", "lt", "lte", "before", "after", "on":
-	default:
+	if !validRuleConditionOperator(field, operator) {
 		return MailRuleCondition{}, false
 	}
 	return MailRuleCondition{Field: field, Operator: operator, Value: value}, true
 }
 
+func validRuleConditionOperator(field, operator string) bool {
+	switch field {
+	case "size":
+		return operator == "gt" || operator == "gte" || operator == "lt" || operator == "lte" || operator == "equals" || operator == "not-equals"
+	case "date":
+		return operator == "before" || operator == "after" || operator == "on" || operator == "equals" || operator == "not-equals"
+	default:
+		return operator == "contains" || operator == "not-contains" || operator == "equals" || operator == "not-equals" || operator == "starts-with" || operator == "ends-with"
+	}
+}
+
 func normalizeRuleMatchMode(matchMode string) string {
 	switch strings.ToLower(strings.TrimSpace(matchMode)) {
 	case "any", "or":
@@ -1710,23 +1724,37 @@ func (a *App) applyRuleActions(ctx context.Context, mailboxID, messageID string,
 	for _, action := range normalizeRuleActions(actions, "") {
 		switch action.Type {
 		case "archive":
-			if folderID, err := a.ensureFolder(ctx, mailboxID, "Archive"); err == nil {
-				if err := a.moveMessageMaildir(ctx, messageID, folderID); err != nil {
-					return err
-				}
+			folderID, err := a.ensureFolder(ctx, mailboxID, "Archive")
+			if err != nil {
+				return err
+			}
+			if err := a.moveMessageMaildir(ctx, messageID, folderID); err != nil {
+				return err
 			}
 		case "trash":
-			if folderID, err := a.ensureFolder(ctx, mailboxID, "Trash"); err == nil {
-				if err := a.moveMessageMaildir(ctx, messageID, folderID); err != nil {
-					return err
-				}
+			folderID, err := a.ensureFolder(ctx, mailboxID, "Trash")
+			if err != nil {
+				return err
+			}
+			if err := a.moveMessageMaildir(ctx, messageID, folderID); err != nil {
+				return err
 			}
 		case "move":
-			target := ruleTargetFolder(action.Value)
-			if folderID, err := a.ensureFolder(ctx, mailboxID, target); err == nil {
-				if err := a.moveMessageMaildir(ctx, messageID, folderID); err != nil {
-					return err
-				}
+			target, err := normalizeFolderNameForUser(action.Value)
+			if err != nil {
+				return err
+			}
+			var folderID string
+			if isSystemFolderName(target) {
+				folderID, err = a.ensureFolder(ctx, mailboxID, target)
+			} else {
+				folderID, err = a.ensureCustomFolder(ctx, mailboxID, target, "auto")
+			}
+			if err != nil {
+				return err
+			}
+			if err := a.moveMessageMaildir(ctx, messageID, folderID); err != nil {
+				return err
 			}
 		case "star":
 			starred := true
@@ -1789,21 +1817,6 @@ func (a *App) applyRuleLabel(ctx context.Context, mailboxID, messageID string, a
 	return err
 }
 
-func ruleTargetFolder(value string) string {
-	switch strings.ToLower(strings.TrimSpace(value)) {
-	case "inbox":
-		return "Inbox"
-	case "archive":
-		return "Archive"
-	case "spam":
-		return "Spam"
-	case "trash":
-		return "Trash"
-	default:
-		return "Archive"
-	}
-}
-
 func (a *App) applyRuleToExistingMessages(ctx context.Context, userID, mailboxID string, rule MailRule) (int64, error) {
 	args := []any{userID}
 	where := `mb.user_id=?`
@@ -1811,7 +1824,7 @@ func (a *App) applyRuleToExistingMessages(ctx context.Context, userID, mailboxID
 		where += ` AND m.mailbox_id=?`
 		args = append(args, mailboxID)
 	}
-	rows, err := a.db.QueryContext(ctx, `SELECT m.id FROM messages m JOIN mailboxes mb ON mb.id=m.mailbox_id WHERE `+where, args...)
+	rows, err := a.db.QueryContext(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 `+where+` AND lower(f.name) NOT IN ('sent','drafts')`, args...)
 	if err != nil {
 		return 0, err
 	}

apps/api/internal/app/router_auth.go

@@ -128,6 +128,7 @@ func (a *App) Router() http.Handler {
 			r.With(a.requirePermission(PermissionMailOrganize)).Post("/mail/messages/{id}/star", a.handleStar)
 			r.With(a.requirePermission(PermissionMailLabels)).Post("/mail/messages/{id}/labels", a.handleAddMessageLabel)
 			r.With(a.requirePermission(PermissionMailLabels)).Delete("/mail/messages/{id}/labels/{labelID}", a.handleRemoveMessageLabel)
+			r.With(a.requirePermission(PermissionMailOrganize)).Post("/mail/messages/bulk-move", a.handleBulkMove)
 			r.With(a.requirePermission(PermissionMailOrganize)).Post("/mail/messages/{id}/move", a.handleMove)
 			r.With(a.requirePermission(PermissionMailOrganize)).Delete("/mail/messages/{id}", a.handleDeleteMessage)
 			r.With(a.requirePermission(PermissionMailAttachments)).Get("/mail/attachments/{id}", a.handleAttachment)
@@ -170,6 +171,9 @@ func (a *App) Router() http.Handler {
 			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(PermissionSettingsUpdate)).Post("/admin/settings/telegram/pair", a.handleCreateTelegramPairing)
+			r.With(a.requirePermission(PermissionSettingsUpdate)).Post("/admin/settings/telegram/discover", a.handleDiscoverTelegramChat)
+			r.With(a.requirePermission(PermissionSettingsUpdate)).Post("/admin/settings/telegram/test", a.handleTestTelegram)
 			r.With(a.requirePermission(PermissionTemplatesView)).Get("/admin/mail-templates", a.handleListMailTemplates)
 			r.With(a.requirePermission(PermissionTemplatesUpdate)).Post("/admin/mail-templates/{key}", a.handleUpdateMailTemplate)
 			r.With(a.requirePermission(PermissionTemplatesReset)).Post("/admin/mail-templates/{key}/reset", a.handleResetMailTemplate)
@@ -344,10 +348,9 @@ func bearerToken(r *http.Request) string {
 }
 
 func (a *App) userByEmail(ctx context.Context, email string) (*User, string, error) {
-	loginName := normalizeLoginName(email)
+	email = normalizeEmail(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)
+		FROM users WHERE email=? LIMIT 1`, email)
 	var u User
 	var passwordHash string
 	var disabled, twoFactorEnabled int

apps/api/internal/app/settings_handlers.go

@@ -40,6 +40,12 @@ type SystemSettings struct {
 	ExternalIMAPGmailClientSecretSet   bool     `json:"externalImapGmailClientSecretSet"`
 	ExternalIMAPOutlookClientID        string   `json:"externalImapOutlookClientId"`
 	ExternalIMAPOutlookClientSecretSet bool     `json:"externalImapOutlookClientSecretSet"`
+	TelegramMailEnabled                bool     `json:"telegramMailEnabled"`
+	TelegramBotTokenSet                bool     `json:"telegramBotTokenSet"`
+	TelegramPrivateChatID              string   `json:"telegramPrivateChatId"`
+	TelegramBodyMode                   string   `json:"telegramBodyMode"`
+	TelegramMailboxIDs                 []string `json:"telegramMailboxIds"`
+	TelegramIncludeUnregistered        bool     `json:"telegramIncludeUnregistered"`
 }
 
 type systemSettingsUpdate struct {
@@ -73,6 +79,12 @@ type systemSettingsUpdate struct {
 	ExternalIMAPGmailClientSecret   string   `json:"externalImapGmailClientSecret"`
 	ExternalIMAPOutlookClientID     string   `json:"externalImapOutlookClientId"`
 	ExternalIMAPOutlookClientSecret string   `json:"externalImapOutlookClientSecret"`
+	TelegramMailEnabled             bool     `json:"telegramMailEnabled"`
+	TelegramBotToken                string   `json:"telegramBotToken"`
+	TelegramPrivateChatID           string   `json:"telegramPrivateChatId"`
+	TelegramBodyMode                string   `json:"telegramBodyMode"`
+	TelegramMailboxIDs              []string `json:"telegramMailboxIds"`
+	TelegramIncludeUnregistered     bool     `json:"telegramIncludeUnregistered"`
 }
 
 type PublicSettings struct {
@@ -127,6 +139,8 @@ func (a *App) handlePublicSettings(w http.ResponseWriter, r *http.Request) {
 }
 
 func (a *App) handleUpdateSystemSettings(w http.ResponseWriter, r *http.Request) {
+	a.telegramDeliveryMu.Lock()
+	defer a.telegramDeliveryMu.Unlock()
 	var req systemSettingsUpdate
 	if err := decodeJSON(r, &req); err != nil {
 		badRequest(w, err)
@@ -204,8 +218,32 @@ func (a *App) handleUpdateSystemSettings(w http.ResponseWriter, r *http.Request)
 		badRequest(w, errors.New("外部 IMAP 加密密钥未设置"))
 		return
 	}
+	next.TelegramMailEnabled = req.TelegramMailEnabled
+	if strings.TrimSpace(req.TelegramBotToken) != "" {
+		next.TelegramBotToken = strings.TrimSpace(req.TelegramBotToken)
+	}
+	next.TelegramPrivateChatID = strings.TrimSpace(req.TelegramPrivateChatID)
+	next.TelegramBodyMode = normalizeTelegramBodyMode(req.TelegramBodyMode)
+	next.TelegramMailboxIDs = strings.Join(a.activeTelegramMailboxIDs(r.Context(), req.TelegramMailboxIDs), ",")
+	next.TelegramIncludeUnregistered = req.TelegramIncludeUnregistered
+	if next.TelegramMailEnabled {
+		if next.TelegramBotToken == "" {
+			badRequest(w, errors.New("Telegram Bot Token 未设置"))
+			return
+		}
+		if !validTelegramPrivateChatID(next.TelegramPrivateChatID) {
+			badRequest(w, errors.New("Telegram 私聊 Chat ID 无效"))
+			return
+		}
+		if next.TelegramMailboxIDs == "" && !next.TelegramIncludeUnregistered {
+			badRequest(w, errors.New("请至少选择一个 Telegram 通知邮箱或开启未知收件通知"))
+			return
+		}
+	}
 
-	if err := a.saveSystemSettings(r.Context(), next); err != nil {
+	previous := a.config()
+	telegramDestinationChanged := previous.TelegramMailEnabled != next.TelegramMailEnabled || previous.TelegramBotToken != next.TelegramBotToken || previous.TelegramPrivateChatID != next.TelegramPrivateChatID || previous.TelegramMailboxIDs != next.TelegramMailboxIDs || previous.TelegramIncludeUnregistered != next.TelegramIncludeUnregistered
+	if err := a.saveSystemSettings(r.Context(), next, telegramDestinationChanged); err != nil {
 		respondError(w, http.StatusInternalServerError, "failed to save settings")
 		return
 	}
@@ -318,6 +356,12 @@ func (a *App) systemSettingsSnapshot() SystemSettings {
 		ExternalIMAPGmailClientSecretSet:   strings.TrimSpace(cfg.ExternalIMAPGmailClientSecret) != "",
 		ExternalIMAPOutlookClientID:        cfg.ExternalIMAPOutlookClientID,
 		ExternalIMAPOutlookClientSecretSet: strings.TrimSpace(cfg.ExternalIMAPOutlookClientSecret) != "",
+		TelegramMailEnabled:                cfg.TelegramMailEnabled,
+		TelegramBotTokenSet:                strings.TrimSpace(cfg.TelegramBotToken) != "",
+		TelegramPrivateChatID:              cfg.TelegramPrivateChatID,
+		TelegramBodyMode:                   normalizeTelegramBodyMode(cfg.TelegramBodyMode),
+		TelegramMailboxIDs:                 cleanIDList(strings.Split(cfg.TelegramMailboxIDs, ",")),
+		TelegramIncludeUnregistered:        cfg.TelegramIncludeUnregistered,
 	}
 }
 
@@ -402,6 +446,18 @@ func (a *App) loadPersistedSystemSettings(ctx context.Context) error {
 			cfg.ExternalIMAPOutlookClientID = value
 		case "externalImapOutlookClientSecret":
 			cfg.ExternalIMAPOutlookClientSecret = value
+		case "telegramMailEnabled":
+			cfg.TelegramMailEnabled = value == "true"
+		case "telegramBotToken":
+			cfg.TelegramBotToken = value
+		case "telegramPrivateChatId":
+			cfg.TelegramPrivateChatID = value
+		case "telegramBodyMode":
+			cfg.TelegramBodyMode = normalizeTelegramBodyMode(value)
+		case "telegramMailboxIds":
+			cfg.TelegramMailboxIDs = strings.Join(cleanIDList(strings.Split(value, ",")), ",")
+		case "telegramIncludeUnregistered":
+			cfg.TelegramIncludeUnregistered = value == "true"
 		}
 	}
 	if err := rows.Err(); err != nil {
@@ -411,7 +467,7 @@ func (a *App) loadPersistedSystemSettings(ctx context.Context) error {
 	return nil
 }
 
-func (a *App) saveSystemSettings(ctx context.Context, cfg Config) error {
+func (a *App) saveSystemSettings(ctx context.Context, cfg Config, clearPendingTelegram bool) error {
 	values := map[string]string{
 		"publicHostname":                  cfg.PublicHostname,
 		"publicBaseUrl":                   cfg.PublicBaseURL,
@@ -443,6 +499,12 @@ func (a *App) saveSystemSettings(ctx context.Context, cfg Config) error {
 		"externalImapGmailClientSecret":   cfg.ExternalIMAPGmailClientSecret,
 		"externalImapOutlookClientId":     cfg.ExternalIMAPOutlookClientID,
 		"externalImapOutlookClientSecret": cfg.ExternalIMAPOutlookClientSecret,
+		"telegramMailEnabled":             strconv.FormatBool(cfg.TelegramMailEnabled),
+		"telegramBotToken":                cfg.TelegramBotToken,
+		"telegramPrivateChatId":           cfg.TelegramPrivateChatID,
+		"telegramBodyMode":                normalizeTelegramBodyMode(cfg.TelegramBodyMode),
+		"telegramMailboxIds":              strings.Join(cleanIDList(strings.Split(cfg.TelegramMailboxIDs, ",")), ","),
+		"telegramIncludeUnregistered":     strconv.FormatBool(cfg.TelegramIncludeUnregistered),
 	}
 	now := a.now().UTC().Format(time.RFC3339Nano)
 	tx, err := a.db.BeginTx(ctx, nil)
@@ -456,6 +518,11 @@ func (a *App) saveSystemSettings(ctx context.Context, cfg Config) error {
 			return err
 		}
 	}
+	if clearPendingTelegram {
+		if _, err := tx.ExecContext(ctx, `DELETE FROM telegram_mail_outbox WHERE delivered_at IS NULL`); err != nil {
+			return err
+		}
+	}
 	return tx.Commit()
 }
 

apps/api/internal/app/submission.go

@@ -121,21 +121,59 @@ type submissionSession struct {
 }
 
 func (s *submissionSession) AuthMechanisms() []string {
-	return []string{sasl.Plain}
+	return []string{sasl.Plain, sasl.Login}
 }
 
 func (s *submissionSession) Auth(mech string) (sasl.Server, error) {
-	if !strings.EqualFold(mech, sasl.Plain) {
-		return nil, smtpserver.ErrAuthUnknownMechanism
-	}
-	return sasl.NewPlainServer(func(identity, username, password string) error {
+	authenticate := func(username, password string) error {
 		user, mailbox, err := s.app.authenticateSubmission(context.Background(), username, password)
 		if err != nil {
 			return smtpserver.ErrAuthFailed
 		}
 		s.user, s.mailbox = user, mailbox
 		return nil
-	}), nil
+	}
+	switch {
+	case strings.EqualFold(mech, sasl.Plain):
+		return sasl.NewPlainServer(func(_, username, password string) error {
+			return authenticate(username, password)
+		}), nil
+	case strings.EqualFold(mech, sasl.Login):
+		return &submissionLoginServer{authenticate: authenticate}, nil
+	default:
+		return nil, smtpserver.ErrAuthUnknownMechanism
+	}
+}
+
+type submissionLoginServer struct {
+	authenticate func(username, password string) error
+	username     string
+	step         int
+}
+
+func (s *submissionLoginServer) Next(response []byte) ([]byte, bool, error) {
+	switch s.step {
+	case 0:
+		if response == nil {
+			s.step = 1
+			return []byte("Username:"), false, nil
+		}
+		s.username = string(response)
+		s.step = 2
+		return []byte("Password:"), false, nil
+	case 1:
+		s.username = string(response)
+		s.step = 2
+		return []byte("Password:"), false, nil
+	case 2:
+		if err := s.authenticate(s.username, string(response)); err != nil {
+			return nil, false, err
+		}
+		s.step = 3
+		return nil, true, nil
+	default:
+		return nil, false, sasl.ErrUnexpectedClientResponse
+	}
 }
 
 func (s *submissionSession) Mail(from string, _ *smtpserver.MailOptions) error {

apps/api/internal/app/telegram.go

@@ -0,0 +1,992 @@
+package app
+
+import (
+	"bytes"
+	"context"
+	"crypto/rand"
+	"crypto/sha256"
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"html"
+	"io"
+	"net/http"
+	"net/url"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+	"unicode"
+	"unicode/utf8"
+
+	nethtml "golang.org/x/net/html"
+)
+
+const (
+	telegramMailMaxAttempts = 8
+	telegramMessageBudget   = 3800
+	telegramPairingTTL      = 10 * time.Minute
+)
+
+type telegramPairing struct {
+	TokenFingerprint string
+	ExpiresAt        time.Time
+}
+
+type telegramMailPayload struct {
+	From            string   `json:"from"`
+	FromName        string   `json:"fromName,omitempty"`
+	Recipient       string   `json:"recipient"`
+	Subject         string   `json:"subject"`
+	ReceivedAt      string   `json:"receivedAt"`
+	Body            string   `json:"body"`
+	BodyMode        string   `json:"bodyMode"`
+	OTP             string   `json:"otp,omitempty"`
+	AttachmentNames []string `json:"attachmentNames,omitempty"`
+	AttachmentCount int      `json:"attachmentCount,omitempty"`
+}
+
+type telegramCredentialsRequest struct {
+	BotToken    string `json:"botToken"`
+	ChatID      string `json:"chatId"`
+	PairingCode string `json:"pairingCode"`
+}
+
+type telegramAPIResponse struct {
+	OK          bool            `json:"ok"`
+	ErrorCode   int             `json:"error_code"`
+	Description string          `json:"description"`
+	Result      json.RawMessage `json:"result"`
+	Parameters  struct {
+		RetryAfter int `json:"retry_after"`
+	} `json:"parameters"`
+}
+
+type telegramUpdate struct {
+	UpdateID int64 `json:"update_id"`
+	Message  *struct {
+		Text string `json:"text"`
+		Chat struct {
+			ID        int64  `json:"id"`
+			Type      string `json:"type"`
+			FirstName string `json:"first_name"`
+			LastName  string `json:"last_name"`
+			Username  string `json:"username"`
+		} `json:"chat"`
+	} `json:"message"`
+}
+
+type telegramAPIError struct {
+	HTTPStatus  int
+	ErrorCode   int
+	Description string
+	RetryAfter  time.Duration
+}
+
+func (e *telegramAPIError) Error() string {
+	description := strings.TrimSpace(e.Description)
+	if description == "" {
+		description = fmt.Sprintf("HTTP %d", e.HTTPStatus)
+	}
+	return "Telegram 发送失败: " + description
+}
+
+type telegramSentMessage struct {
+	MessageID int64 `json:"message_id"`
+}
+
+type telegramFormattedMessage struct {
+	HTML      string
+	PlainText string
+	OTP       string
+}
+
+func normalizeTelegramBodyMode(value string) string {
+	if strings.EqualFold(strings.TrimSpace(value), "full") {
+		return "full"
+	}
+	return "summary"
+}
+
+func validTelegramPrivateChatID(value string) bool {
+	id, err := strconv.ParseInt(strings.TrimSpace(value), 10, 64)
+	return err == nil && id > 0
+}
+
+func (a *App) handleCreateTelegramPairing(w http.ResponseWriter, r *http.Request) {
+	var req telegramCredentialsRequest
+	if err := decodeJSON(r, &req); err != nil {
+		badRequest(w, err)
+		return
+	}
+	token := strings.TrimSpace(req.BotToken)
+	if token == "" {
+		token = strings.TrimSpace(a.config().TelegramBotToken)
+	}
+	if token == "" {
+		badRequest(w, errors.New("请先填写 Telegram Bot Token"))
+		return
+	}
+	var bot struct {
+		Username string `json:"username"`
+	}
+	if err := a.callTelegram(r.Context(), token, "getMe", map[string]any{}, &bot); err != nil {
+		respondError(w, http.StatusBadGateway, err.Error())
+		return
+	}
+	if strings.TrimSpace(bot.Username) == "" {
+		respondError(w, http.StatusBadGateway, "Telegram 机器人没有可用的用户名")
+		return
+	}
+	code, err := newTelegramPairingCode()
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "无法生成 Telegram 绑定码")
+		return
+	}
+	expiresAt := a.now().UTC().Add(telegramPairingTTL)
+	a.telegramPairMu.Lock()
+	for value, pairing := range a.telegramPairs {
+		if !pairing.ExpiresAt.After(a.now().UTC()) {
+			delete(a.telegramPairs, value)
+		}
+	}
+	a.telegramPairs[code] = telegramPairing{TokenFingerprint: telegramTokenFingerprint(token), ExpiresAt: expiresAt}
+	a.telegramPairMu.Unlock()
+	respondJSON(w, http.StatusOK, map[string]string{
+		"code":        code,
+		"botUsername": bot.Username,
+		"deepLink":    "https://t.me/" + url.PathEscape(bot.Username) + "?start=" + url.QueryEscape(code),
+		"expiresAt":   expiresAt.Format(time.RFC3339Nano),
+	})
+}
+
+func (a *App) handleDiscoverTelegramChat(w http.ResponseWriter, r *http.Request) {
+	var req telegramCredentialsRequest
+	if err := decodeJSON(r, &req); err != nil {
+		badRequest(w, err)
+		return
+	}
+	token := strings.TrimSpace(req.BotToken)
+	if token == "" {
+		token = strings.TrimSpace(a.config().TelegramBotToken)
+	}
+	code := strings.ToUpper(strings.TrimSpace(req.PairingCode))
+	if token == "" || code == "" {
+		badRequest(w, errors.New("请先生成 Telegram 一次性绑定码"))
+		return
+	}
+	a.telegramPairMu.Lock()
+	pairing, ok := a.telegramPairs[code]
+	a.telegramPairMu.Unlock()
+	if !ok || !pairing.ExpiresAt.After(a.now().UTC()) || pairing.TokenFingerprint != telegramTokenFingerprint(token) {
+		badRequest(w, errors.New("Telegram 绑定码无效或已过期，请重新生成"))
+		return
+	}
+	chatID, displayName, err := a.discoverTelegramPrivateChat(r.Context(), token, code)
+	if err != nil {
+		respondError(w, http.StatusBadGateway, err.Error())
+		return
+	}
+	a.telegramPairMu.Lock()
+	delete(a.telegramPairs, code)
+	a.telegramPairMu.Unlock()
+	respondJSON(w, http.StatusOK, map[string]string{"chatId": chatID, "displayName": displayName})
+}
+
+func (a *App) handleTestTelegram(w http.ResponseWriter, r *http.Request) {
+	var req telegramCredentialsRequest
+	if err := decodeJSON(r, &req); err != nil {
+		badRequest(w, err)
+		return
+	}
+	token, chatID := a.telegramCredentials(req)
+	if token == "" {
+		badRequest(w, errors.New("请先填写 Telegram Bot Token"))
+		return
+	}
+	if !validTelegramPrivateChatID(chatID) {
+		badRequest(w, errors.New("请先获取或填写有效的私聊 Chat ID"))
+		return
+	}
+	now := a.now().Local().Format("2006-01-02 15:04:05 MST")
+	text := "<b>NewSzxcn 邮箱通知测试</b>\n\nTelegram 私聊邮件通知连接正常。\n\n<b>测试时间：</b>" + html.EscapeString(now)
+	if err := a.sendTelegramMessage(r.Context(), token, chatID, text); err != nil {
+		respondError(w, http.StatusBadGateway, err.Error())
+		return
+	}
+	respondJSON(w, http.StatusOK, map[string]any{"ok": true})
+}
+
+func (a *App) telegramCredentials(req telegramCredentialsRequest) (string, string) {
+	cfg := a.config()
+	token := strings.TrimSpace(req.BotToken)
+	if token == "" {
+		token = strings.TrimSpace(cfg.TelegramBotToken)
+	}
+	chatID := strings.TrimSpace(req.ChatID)
+	if chatID == "" {
+		chatID = strings.TrimSpace(cfg.TelegramPrivateChatID)
+	}
+	return token, chatID
+}
+
+func (a *App) discoverTelegramPrivateChat(ctx context.Context, token, pairingCode string) (string, string, error) {
+	var updates []telegramUpdate
+	if err := a.callTelegram(ctx, token, "getUpdates", map[string]any{
+		"limit":           100,
+		"timeout":         0,
+		"allowed_updates": []string{"message"},
+	}, &updates); err != nil {
+		return "", "", err
+	}
+	for i := len(updates) - 1; i >= 0; i-- {
+		message := updates[i].Message
+		if message == nil || message.Chat.Type != "private" || message.Chat.ID <= 0 {
+			continue
+		}
+		text := strings.TrimSpace(message.Text)
+		if text != pairingCode && text != "/start "+pairingCode {
+			continue
+		}
+		name := strings.TrimSpace(strings.Join([]string{message.Chat.FirstName, message.Chat.LastName}, " "))
+		if name == "" && message.Chat.Username != "" {
+			name = "@" + message.Chat.Username
+		}
+		return strconv.FormatInt(message.Chat.ID, 10), name, nil
+	}
+	return "", "", errors.New("未找到匹配的私聊，请打开机器人发送绑定码后重试")
+}
+
+func newTelegramPairingCode() (string, error) {
+	raw := make([]byte, 6)
+	if _, err := rand.Read(raw); err != nil {
+		return "", err
+	}
+	return strings.ToUpper(hex.EncodeToString(raw)), nil
+}
+
+func telegramTokenFingerprint(token string) string {
+	sum := sha256.Sum256([]byte(strings.TrimSpace(token)))
+	return hex.EncodeToString(sum[:])
+}
+
+func telegramMailboxAllowed(cfg Config, mailboxID string) bool {
+	mailboxID = strings.TrimSpace(mailboxID)
+	if mailboxID == "" {
+		return cfg.TelegramIncludeUnregistered
+	}
+	for _, id := range cleanIDList(strings.Split(cfg.TelegramMailboxIDs, ",")) {
+		if id == mailboxID {
+			return true
+		}
+	}
+	return false
+}
+
+func (a *App) activeTelegramMailboxIDs(ctx context.Context, values []string) []string {
+	ids := cleanIDList(values)
+	active := make([]string, 0, len(ids))
+	for _, id := range ids {
+		var exists int
+		if err := a.db.QueryRowContext(ctx, `SELECT 1 FROM mailboxes WHERE id=? AND status='active'`, id).Scan(&exists); err == nil && exists == 1 {
+			active = append(active, id)
+		}
+	}
+	return active
+}
+
+func (a *App) enqueueTelegramMailNotification(ctx context.Context, messageID string, msg storedMessage, attachments []AttachmentInput) {
+	cfg := a.config()
+	if !cfg.TelegramMailEnabled || strings.TrimSpace(cfg.TelegramBotToken) == "" || !validTelegramPrivateChatID(cfg.TelegramPrivateChatID) || !telegramMailboxAllowed(cfg, msg.MailboxID) {
+		return
+	}
+	recipient := normalizeEmail(msg.RecipientAddr)
+	if recipient == "" && len(msg.To) > 0 {
+		recipient = normalizeEmail(msg.To[0])
+	}
+	body := telegramMessageBody(msg)
+	otp := detectTelegramOTP(msg.Subject, body)
+	mode := normalizeTelegramBodyMode(cfg.TelegramBodyMode)
+	limit := 800
+	if mode == "full" {
+		limit = 2600
+	}
+	body, truncated := truncateRunes(body, limit)
+	if truncated {
+		body += "..."
+	}
+	if body == "" {
+		body = normalizeTelegramText(msg.Snippet)
+	}
+	from, _ := truncateRunes(strings.TrimSpace(msg.From), 254)
+	fromName, _ := truncateRunes(strings.TrimSpace(msg.FromName), 160)
+	subject, _ := truncateRunes(strings.TrimSpace(msg.Subject), 240)
+	names := make([]string, 0, min(len(attachments), 5))
+	for _, attachment := range attachments {
+		name := sanitizeTelegramAttachmentName(attachment.Filename)
+		if name != "" {
+			names = append(names, name)
+		}
+		if len(names) >= 5 {
+			break
+		}
+	}
+	payload := telegramMailPayload{
+		From:            from,
+		FromName:        fromName,
+		Recipient:       recipient,
+		Subject:         subject,
+		ReceivedAt:      a.now().UTC().Format(time.RFC3339Nano),
+		Body:            body,
+		BodyMode:        mode,
+		OTP:             otp,
+		AttachmentNames: names,
+		AttachmentCount: len(attachments),
+	}
+	now := a.now().UTC().Format(time.RFC3339Nano)
+	if _, err := a.db.ExecContext(ctx, `INSERT OR IGNORE INTO telegram_mail_outbox(id,message_id,payload_json,next_attempt_at,created_at,updated_at) VALUES(?,?,?,?,?,?)`, newID("tgm"), messageID, jsonEncode(payload), now, now, now); err != nil {
+		a.log.Warn("failed to enqueue Telegram mail notification", "messageId", messageID, "error", err)
+	}
+}
+
+func telegramMessageBody(msg storedMessage) string {
+	text := strings.TrimSpace(msg.BodyText)
+	text, _ = truncateRunes(text, 128*1024)
+	if text != "" && looksLikeHTMLDocument(text) {
+		text = telegramHTMLToText(text)
+	}
+	if strings.TrimSpace(text) == "" {
+		text = telegramHTMLToText(msg.BodyHTML)
+	}
+	return stripTelegramQuotedContent(normalizeTelegramText(text))
+}
+
+func looksLikeHTMLDocument(value string) bool {
+	value, _ = truncateRunes(value, 128*1024)
+	value = strings.ToLower(strings.TrimSpace(value))
+	if strings.HasPrefix(value, "<!doctype html") || strings.HasPrefix(value, "<html") || strings.HasPrefix(value, "<head") || strings.HasPrefix(value, "<body") || strings.HasPrefix(value, "<style") {
+		return true
+	}
+	matches := telegramHTMLTagRe.FindAllStringIndex(value, 4)
+	return len(matches) >= 3
+}
+
+func telegramHTMLToText(value string) string {
+	value = strings.ToValidUTF8(value, "�")
+	value, _ = truncateRunes(value, 128*1024)
+	doc, err := nethtml.Parse(strings.NewReader(value))
+	if err != nil {
+		return stripTags(value)
+	}
+	var out strings.Builder
+	var walk func(*nethtml.Node, bool)
+	walk = func(node *nethtml.Node, skipped bool) {
+		if node.Type == nethtml.ElementNode {
+			switch strings.ToLower(node.Data) {
+			case "script", "style", "head", "noscript", "svg":
+				skipped = true
+			case "br":
+				if !skipped {
+					out.WriteByte('\n')
+				}
+			}
+		}
+		if node.Type == nethtml.TextNode && !skipped {
+			out.WriteString(node.Data)
+		}
+		for child := node.FirstChild; child != nil; child = child.NextSibling {
+			walk(child, skipped)
+		}
+		if node.Type == nethtml.ElementNode && !skipped {
+			switch strings.ToLower(node.Data) {
+			case "p", "div", "li", "tr", "table", "section", "article", "header", "footer", "h1", "h2", "h3", "h4", "h5", "h6":
+				out.WriteByte('\n')
+			}
+		}
+	}
+	walk(doc, false)
+	return normalizeTelegramText(out.String())
+}
+
+func normalizeTelegramText(value string) string {
+	value = strings.ReplaceAll(strings.ToValidUTF8(value, "�"), "\r\n", "\n")
+	value = strings.ReplaceAll(value, "\r", "\n")
+	lines := strings.Split(value, "\n")
+	out := make([]string, 0, len(lines))
+	empty := false
+	for _, line := range lines {
+		line = strings.TrimSpace(strings.Map(func(r rune) rune {
+			if r == '\t' {
+				return ' '
+			}
+			if unicode.IsControl(r) {
+				return -1
+			}
+			return r
+		}, line))
+		line = strings.Join(strings.Fields(line), " ")
+		if line == "" {
+			if !empty && len(out) > 0 {
+				out = append(out, "")
+			}
+			empty = true
+			continue
+		}
+		empty = false
+		out = append(out, line)
+	}
+	return strings.TrimSpace(strings.Join(out, "\n"))
+}
+
+var telegramQuoteBoundaryRe = regexp.MustCompile(`(?i)^(?:-{2,}\s*(?:original message|原始邮件)\s*-*|on .+ wrote:|发件人[：:]|from[：:].+|_{5,})$`)
+var telegramHTMLTagRe = regexp.MustCompile(`(?i)</?(?:div|p|table|tr|td|br|span|a|img)(?:\s[^>]*)?>`)
+
+func stripTelegramQuotedContent(value string) string {
+	lines := strings.Split(value, "\n")
+	for i, line := range lines {
+		trimmed := strings.TrimSpace(line)
+		if i > 0 && (trimmed == "--" || telegramQuoteBoundaryRe.MatchString(trimmed)) {
+			lines = lines[:i]
+			break
+		}
+	}
+	return strings.TrimSpace(strings.Join(lines, "\n"))
+}
+
+func sanitizeTelegramAttachmentName(value string) string {
+	value = strings.TrimSpace(strings.Map(func(r rune) rune {
+		if unicode.IsControl(r) {
+			return -1
+		}
+		return r
+	}, strings.ToValidUTF8(value, "�")))
+	value = strings.Join(strings.Fields(value), " ")
+	value, truncated := truncateRunes(value, 100)
+	if truncated {
+		value += "..."
+	}
+	return value
+}
+
+var (
+	telegramOTPKeywordRe   = regexp.MustCompile(`(?i)(验证码|校验码|动态码|登录码|安全码|一次性密码|otp|verification[ -]?code|security[ -]?code|login[ -]?code|passcode|one[ -]?time[ -]?(?:password|code))`)
+	telegramOTPCandidateRe = regexp.MustCompile(`(?i)[a-z0-9]{4,10}`)
+	telegramEmailRe        = regexp.MustCompile(`(?i)[a-z0-9._%+\-]+@[a-z0-9.\-]+\.[a-z]{2,}`)
+	telegramURLRe          = regexp.MustCompile(`(?i)https?://[^\s<>"']+`)
+)
+
+func detectTelegramOTP(subject, body string) string {
+	text := normalizeTelegramText(strings.TrimSpace(subject) + "\n" + body)
+	keywords := telegramOTPKeywordRe.FindAllStringIndex(text, -1)
+	if len(keywords) == 0 {
+		return ""
+	}
+	type candidateScore struct {
+		value string
+		score int
+		count int
+	}
+	scores := map[string]candidateScore{}
+	subjectEnd := len(strings.TrimSpace(subject))
+	excludedRanges := append(telegramEmailRe.FindAllStringIndex(text, -1), telegramURLRe.FindAllStringIndex(text, -1)...)
+	for _, match := range telegramOTPCandidateRe.FindAllStringIndex(text, -1) {
+		if telegramRangeOverlaps(match, excludedRanges) {
+			continue
+		}
+		if match[0] > 0 && isTelegramOTPAlphaNumeric(rune(text[match[0]-1])) {
+			continue
+		}
+		if match[1] < len(text) && isTelegramOTPAlphaNumeric(rune(text[match[1]])) {
+			continue
+		}
+		value := strings.ToUpper(text[match[0]:match[1]])
+		hasDigit := false
+		for _, r := range value {
+			if unicode.IsDigit(r) {
+				hasDigit = true
+				break
+			}
+		}
+		if !hasDigit || telegramOTPKeywordRe.MatchString(value) {
+			continue
+		}
+		if isTelegramOTPNonCode(value) {
+			continue
+		}
+		best := 0
+		for _, keyword := range keywords {
+			distance := match[0] - keyword[1]
+			if distance < 0 {
+				distance = keyword[0] - match[1]
+			}
+			if distance < 0 {
+				distance = 0
+			}
+			score := 0
+			switch {
+			case distance <= 16:
+				score = 100
+			case distance <= 48:
+				score = 80
+			case distance <= 100:
+				score = 55
+			}
+			if match[0] <= subjectEnd {
+				score += 15
+			}
+			if score > best {
+				best = score
+			}
+		}
+		if best == 0 {
+			continue
+		}
+		current := scores[value]
+		current.value = value
+		current.count++
+		if best > current.score {
+			current.score = best
+		}
+		scores[value] = current
+	}
+	items := make([]candidateScore, 0, len(scores))
+	for _, item := range scores {
+		item.score += min(item.count-1, 2) * 5
+		items = append(items, item)
+	}
+	sort.Slice(items, func(i, j int) bool { return items[i].score > items[j].score })
+	if len(items) == 0 || items[0].score < 55 {
+		return ""
+	}
+	if len(items) > 1 && items[1].score >= items[0].score-25 {
+		return ""
+	}
+	return items[0].value
+}
+
+func telegramRangeOverlaps(candidate []int, ranges [][]int) bool {
+	for _, item := range ranges {
+		if len(item) == 2 && candidate[0] < item[1] && candidate[1] > item[0] {
+			return true
+		}
+	}
+	return false
+}
+
+func isTelegramOTPNonCode(value string) bool {
+	if len(value) == 4 {
+		if year, err := strconv.Atoi(value); err == nil && year >= 1900 && year <= 2099 {
+			return true
+		}
+	}
+	if len(value) == 8 {
+		if _, err := time.Parse("20060102", value); err == nil {
+			return true
+		}
+	}
+	return false
+}
+
+func isTelegramOTPAlphaNumeric(r rune) bool {
+	return r <= unicode.MaxASCII && (unicode.IsLetter(r) || unicode.IsDigit(r))
+}
+
+func (a *App) shouldNotifyTelegramMessage(ctx context.Context, messageID string) bool {
+	var folder string
+	if err := a.db.QueryRowContext(ctx, `SELECT lower(COALESCE(NULLIF(f.role,''),f.name,'')) FROM messages m LEFT JOIN folders f ON f.id=m.folder_id WHERE m.id=?`, messageID).Scan(&folder); err != nil {
+		return false
+	}
+	switch strings.TrimSpace(folder) {
+	case "spam", "junk", "trash", "deleted":
+		return false
+	default:
+		return true
+	}
+}
+
+func (a *App) telegramMailWorker(ctx context.Context) {
+	a.log.Info("Telegram mail notification worker started")
+	ticker := time.NewTicker(5 * time.Second)
+	defer ticker.Stop()
+	for {
+		if err := a.processDueTelegramMailNotifications(ctx); err != nil && !errors.Is(err, context.Canceled) {
+			a.log.Warn("Telegram mail notification worker failed", "error", err)
+		}
+		select {
+		case <-ctx.Done():
+			a.log.Info("Telegram mail notification worker stopped")
+			return
+		case <-ticker.C:
+		}
+	}
+}
+
+func (a *App) processDueTelegramMailNotifications(ctx context.Context) error {
+	a.telegramDeliveryMu.Lock()
+	defer a.telegramDeliveryMu.Unlock()
+	_, _ = a.db.ExecContext(ctx, `DELETE FROM telegram_mail_outbox WHERE updated_at<? AND (delivered_at IS NOT NULL OR attempt_count>=?)`, a.now().UTC().Add(-30*24*time.Hour).Format(time.RFC3339Nano), telegramMailMaxAttempts)
+	cfg := a.config()
+	if !cfg.TelegramMailEnabled || strings.TrimSpace(cfg.TelegramBotToken) == "" || !validTelegramPrivateChatID(cfg.TelegramPrivateChatID) {
+		return nil
+	}
+	nowText := a.now().UTC().Format(time.RFC3339Nano)
+	rows, err := a.db.QueryContext(ctx, `SELECT id,payload_json,attempt_count FROM telegram_mail_outbox WHERE delivered_at IS NULL AND attempt_count<? AND next_attempt_at<=? AND (lease_until='' OR lease_until<=?) ORDER BY next_attempt_at,created_at LIMIT 20`, telegramMailMaxAttempts, nowText, nowText)
+	if err != nil {
+		return err
+	}
+	type queueItem struct {
+		id      string
+		payload telegramMailPayload
+		attempt int
+		invalid bool
+	}
+	items := []queueItem{}
+	for rows.Next() {
+		var item queueItem
+		var raw string
+		if err := rows.Scan(&item.id, &raw, &item.attempt); err != nil {
+			rows.Close()
+			return err
+		}
+		if err := json.Unmarshal([]byte(raw), &item.payload); err != nil {
+			item.invalid = true
+		}
+		items = append(items, item)
+	}
+	if err := rows.Close(); err != nil {
+		return err
+	}
+	for _, item := range items {
+		if item.invalid {
+			now := a.now().UTC().Format(time.RFC3339Nano)
+			if _, err := a.db.ExecContext(ctx, `UPDATE telegram_mail_outbox SET attempt_count=?,last_error='通知数据损坏',updated_at=?,lease_until='',payload_json='{}' WHERE id=?`, telegramMailMaxAttempts, now, item.id); err != nil {
+				return err
+			}
+			continue
+		}
+		now := a.now().UTC()
+		leaseUntil := now.Add(2 * time.Minute).Format(time.RFC3339Nano)
+		result, err := a.db.ExecContext(ctx, `UPDATE telegram_mail_outbox SET lease_until=?,updated_at=? WHERE id=? AND delivered_at IS NULL AND (lease_until='' OR lease_until<=?)`, leaseUntil, now.Format(time.RFC3339Nano), item.id, now.Format(time.RFC3339Nano))
+		if err != nil {
+			return err
+		}
+		if affected, _ := result.RowsAffected(); affected != 1 {
+			continue
+		}
+		formatted := formatTelegramMailMessage(item.payload)
+		telegramMessageID, err := a.deliverTelegramMailMessage(ctx, cfg.TelegramBotToken, cfg.TelegramPrivateChatID, formatted)
+		now = a.now().UTC()
+		if err != nil {
+			attempts := item.attempt + 1
+			delay := sendRetryDelay(attempts)
+			var apiErr *telegramAPIError
+			if errors.As(err, &apiErr) {
+				if apiErr.RetryAfter > 0 {
+					delay = apiErr.RetryAfter
+				}
+				code := apiErr.ErrorCode
+				if code == 0 {
+					code = apiErr.HTTPStatus
+				}
+				if code == http.StatusUnauthorized || code == http.StatusForbidden || (code >= 400 && code < 500 && code != http.StatusTooManyRequests) {
+					attempts = telegramMailMaxAttempts
+				}
+			}
+			next := now.Add(delay)
+			if _, updateErr := a.db.ExecContext(ctx, `UPDATE telegram_mail_outbox SET attempt_count=?,next_attempt_at=?,last_error=?,updated_at=?,lease_until='',payload_json=CASE WHEN ?>=? THEN '{}' ELSE payload_json END WHERE id=? AND delivered_at IS NULL`, attempts, next.Format(time.RFC3339Nano), truncateWebhookError(err.Error()), now.Format(time.RFC3339Nano), attempts, telegramMailMaxAttempts, item.id); updateErr != nil {
+				return updateErr
+			}
+			continue
+		}
+		stamp := now.Format(time.RFC3339Nano)
+		if _, err := a.db.ExecContext(ctx, `UPDATE telegram_mail_outbox SET attempt_count=attempt_count+1,last_error='',updated_at=?,delivered_at=?,lease_until='',telegram_message_id=?,payload_json='{}' WHERE id=? AND delivered_at IS NULL`, stamp, stamp, telegramMessageID, item.id); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func formatTelegramMailMessage(payload telegramMailPayload) telegramFormattedMessage {
+	subject := strings.TrimSpace(payload.Subject)
+	if subject == "" || subject == "(no subject)" {
+		subject = "（无主题）"
+	}
+	from := strings.TrimSpace(payload.From)
+	if name := strings.TrimSpace(payload.FromName); name != "" {
+		from = name + " <" + from + ">"
+	}
+	receivedAt := parseTime(payload.ReceivedAt)
+	timeText := strings.TrimSpace(payload.ReceivedAt)
+	if !receivedAt.IsZero() {
+		timeText = receivedAt.Local().Format("2006-01-02 15:04:05 MST")
+	}
+	subject, _ = truncateRunes(subject, 180)
+	from, _ = truncateRunes(from, 220)
+	recipient, _ := truncateRunes(strings.TrimSpace(payload.Recipient), 160)
+	lines := []string{
+		"📩 <b>新邮件通知</b>",
+		"",
+		"<b>主题：</b>" + escapeTelegramWithinBudget(subject, 420),
+		"<b>发件人：</b>" + escapeTelegramWithinBudget(from, 500),
+		"<b>收件邮箱：</b><code>" + escapeTelegramWithinBudget(recipient, 320) + "</code>",
+		"<b>收件时间：</b>" + html.EscapeString(timeText),
+	}
+	if payload.OTP != "" {
+		lines = append(lines, "", "🔐 <b>验证码</b>", "<code>"+html.EscapeString(payload.OTP)+"</code>")
+	}
+	if len(payload.AttachmentNames) > 0 {
+		names := make([]string, 0, len(payload.AttachmentNames))
+		for _, name := range payload.AttachmentNames {
+			names = append(names, escapeTelegramWithinBudget(name, 180))
+		}
+		attachmentText := strings.Join(names, "、")
+		if payload.AttachmentCount > len(payload.AttachmentNames) {
+			attachmentText += fmt.Sprintf("，其余 %d 个未显示", payload.AttachmentCount-len(payload.AttachmentNames))
+		}
+		lines = append(lines, "", fmt.Sprintf("📎 <b>附件：%d 个</b>", max(payload.AttachmentCount, len(payload.AttachmentNames))), attachmentText)
+	}
+	body := strings.TrimSpace(payload.Body)
+	if body != "" {
+		label := "正文摘要"
+		if normalizeTelegramBodyMode(payload.BodyMode) == "full" {
+			label = "邮件正文"
+		}
+		prefix := strings.Join(lines, "\n") + "\n\n<b>" + label + "</b>\n<blockquote>"
+		suffix := "</blockquote>"
+		body = formatTelegramBodyHTML(body, telegramMessageBudget-utf8.RuneCountInString(prefix)-utf8.RuneCountInString(suffix))
+		lines = []string{prefix + body + suffix}
+	}
+	htmlText := strings.Join(lines, "\n")
+	plain := formatTelegramMailPlainText(payload)
+	return telegramFormattedMessage{HTML: htmlText, PlainText: plain, OTP: payload.OTP}
+}
+
+func formatTelegramBodyHTML(value string, budget int) string {
+	if budget <= 3 {
+		return ""
+	}
+	var out strings.Builder
+	used := 0
+	truncated := false
+	appendEscaped := func(text string) bool {
+		for _, r := range text {
+			escaped := html.EscapeString(string(r))
+			length := utf8.RuneCountInString(escaped)
+			if used+length > budget-3 {
+				return false
+			}
+			out.WriteString(escaped)
+			used += length
+		}
+		return true
+	}
+	last := 0
+	for _, match := range telegramURLRe.FindAllStringIndex(value, -1) {
+		if !appendEscaped(value[last:match[0]]) {
+			truncated = true
+			break
+		}
+		rawURL, trailing := trimTelegramURL(value[match[0]:match[1]])
+		parsed, err := url.Parse(rawURL)
+		if err != nil || parsed.Host == "" || (parsed.Scheme != "http" && parsed.Scheme != "https") {
+			if !appendEscaped(value[match[0]:match[1]]) {
+				truncated = true
+				break
+			}
+			last = match[1]
+			continue
+		}
+		display := rawURL
+		if utf8.RuneCountInString(display) > 72 {
+			display = "🔗 " + parsed.Hostname() + " 链接"
+		}
+		anchor := `<a href="` + html.EscapeString(rawURL) + `">` + html.EscapeString(display) + `</a>`
+		length := utf8.RuneCountInString(anchor)
+		if used+length > budget-3 {
+			truncated = true
+			break
+		}
+		out.WriteString(anchor)
+		used += length
+		if !appendEscaped(trailing) {
+			truncated = true
+			break
+		}
+		last = match[1]
+	}
+	if !truncated && last < len(value) && !appendEscaped(value[last:]) {
+		truncated = true
+	}
+	if truncated {
+		out.WriteString("...")
+	}
+	return out.String()
+}
+
+func trimTelegramURL(value string) (string, string) {
+	trimmed := strings.TrimRight(value, ".,;:!?)]}，。；：！？）》】")
+	return trimmed, value[len(trimmed):]
+}
+
+func (a *App) sendTelegramMessage(ctx context.Context, token, chatID, text string) error {
+	_, err := a.sendTelegramPayload(ctx, token, map[string]any{
+		"chat_id":                  chatID,
+		"text":                     text,
+		"parse_mode":               "HTML",
+		"disable_web_page_preview": true,
+	})
+	return err
+}
+
+func (a *App) deliverTelegramMailMessage(ctx context.Context, token, chatID string, message telegramFormattedMessage) (int64, error) {
+	payload := map[string]any{
+		"chat_id":                  chatID,
+		"text":                     message.HTML,
+		"parse_mode":               "HTML",
+		"disable_web_page_preview": true,
+	}
+	if markup := telegramCopyMarkup(message.OTP); markup != nil {
+		payload["reply_markup"] = markup
+	}
+	result, err := a.sendTelegramPayload(ctx, token, payload)
+	if err == nil {
+		return result.MessageID, nil
+	}
+	var apiErr *telegramAPIError
+	if !errors.As(err, &apiErr) || apiErr.ErrorCode != http.StatusBadRequest {
+		return 0, err
+	}
+	fallback := map[string]any{
+		"chat_id":                  chatID,
+		"text":                     message.PlainText,
+		"disable_web_page_preview": true,
+	}
+	if markup := telegramCopyMarkup(message.OTP); markup != nil {
+		fallback["reply_markup"] = markup
+	}
+	result, err = a.sendTelegramPayload(ctx, token, fallback)
+	if err != nil {
+		return 0, err
+	}
+	return result.MessageID, nil
+}
+
+func (a *App) sendTelegramPayload(ctx context.Context, token string, payload map[string]any) (telegramSentMessage, error) {
+	var result telegramSentMessage
+	err := a.callTelegram(ctx, token, "sendMessage", payload, &result)
+	return result, err
+}
+
+func telegramCopyMarkup(otp string) map[string]any {
+	otp = strings.TrimSpace(otp)
+	if otp == "" || utf8.RuneCountInString(otp) > 256 {
+		return nil
+	}
+	return map[string]any{"inline_keyboard": [][]map[string]any{{{
+		"text":      "复制验证码",
+		"copy_text": map[string]string{"text": otp},
+	}}}}
+}
+
+func escapeTelegramWithinBudget(value string, budget int) string {
+	if budget <= 3 {
+		return ""
+	}
+	var out strings.Builder
+	used := 0
+	truncated := false
+	for _, r := range value {
+		escaped := html.EscapeString(string(r))
+		length := utf8.RuneCountInString(escaped)
+		if used+length > budget-3 {
+			truncated = true
+			break
+		}
+		out.WriteString(escaped)
+		used += length
+	}
+	if truncated {
+		out.WriteString("...")
+	}
+	return out.String()
+}
+
+func formatTelegramMailPlainText(payload telegramMailPayload) string {
+	subject := strings.TrimSpace(payload.Subject)
+	if subject == "" || subject == "(no subject)" {
+		subject = "（无主题）"
+	}
+	from := strings.TrimSpace(payload.From)
+	if name := strings.TrimSpace(payload.FromName); name != "" {
+		from = name + " <" + from + ">"
+	}
+	receivedAt := parseTime(payload.ReceivedAt)
+	timeText := strings.TrimSpace(payload.ReceivedAt)
+	if !receivedAt.IsZero() {
+		timeText = receivedAt.Local().Format("2006-01-02 15:04:05 MST")
+	}
+	parts := []string{"新邮件通知", "", "主题：" + subject, "发件人：" + from, "收件邮箱：" + payload.Recipient, "收件时间：" + timeText}
+	if payload.OTP != "" {
+		parts = append(parts, "", "验证码", payload.OTP)
+	}
+	if payload.AttachmentCount > 0 {
+		parts = append(parts, "", fmt.Sprintf("附件：%d 个", payload.AttachmentCount))
+	}
+	if body := strings.TrimSpace(payload.Body); body != "" {
+		parts = append(parts, "", "正文摘要", body)
+	}
+	text := normalizeTelegramText(strings.Join(parts, "\n"))
+	text, truncated := truncateRunes(text, telegramMessageBudget-3)
+	if truncated {
+		text += "..."
+	}
+	return text
+}
+
+func (a *App) callTelegram(ctx context.Context, token, method string, payload any, result any) error {
+	token = strings.TrimSpace(token)
+	if token == "" || strings.ContainsAny(token, "/\\\r\n") {
+		return errors.New("Telegram Bot Token 无效")
+	}
+	base := strings.TrimRight(strings.TrimSpace(a.telegramURL), "/")
+	endpoint := base + "/bot" + url.PathEscape(token) + "/" + method
+	body, err := json.Marshal(payload)
+	if err != nil {
+		return err
+	}
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, endpoint, bytes.NewReader(body))
+	if err != nil {
+		return err
+	}
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("User-Agent", "NewSzxcn-Email-Telegram/1.0")
+	client := &http.Client{Timeout: 12 * time.Second, CheckRedirect: func(*http.Request, []*http.Request) error { return http.ErrUseLastResponse }}
+	resp, err := client.Do(req)
+	if err != nil {
+		return errors.New("Telegram 请求失败，请检查网络连接和机器人配置")
+	}
+	defer resp.Body.Close()
+	raw, err := io.ReadAll(io.LimitReader(resp.Body, 1<<20))
+	if err != nil {
+		return err
+	}
+	var apiResponse telegramAPIResponse
+	if err := json.Unmarshal(raw, &apiResponse); err != nil {
+		return fmt.Errorf("Telegram 返回了无效响应（HTTP %d）", resp.StatusCode)
+	}
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 || !apiResponse.OK {
+		description := strings.TrimSpace(apiResponse.Description)
+		if description == "" {
+			description = fmt.Sprintf("HTTP %d", resp.StatusCode)
+		}
+		return &telegramAPIError{HTTPStatus: resp.StatusCode, ErrorCode: apiResponse.ErrorCode, Description: description, RetryAfter: time.Duration(apiResponse.Parameters.RetryAfter) * time.Second}
+	}
+	if result != nil && len(apiResponse.Result) > 0 {
+		if err := json.Unmarshal(apiResponse.Result, result); err != nil {
+			return err
+		}
+	}
+	return nil
+}

apps/api/internal/app/telegram_test.go

@@ -0,0 +1,420 @@
+package app
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"sync/atomic"
+	"testing"
+	"time"
+	"unicode/utf8"
+
+	"golang.org/x/text/encoding/simplifiedchinese"
+)
+
+func TestTelegramSettingsDiscoveryTestAndMailQueue(t *testing.T) {
+	type sentMessage struct {
+		ChatID      string         `json:"chat_id"`
+		Text        string         `json:"text"`
+		ReplyMarkup map[string]any `json:"reply_markup"`
+	}
+	var sent []sentMessage
+	var pairingCode atomic.Value
+	pairingCode.Store("")
+	telegramServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		switch r.URL.Path {
+		case "/bottest-token/getMe":
+			_, _ = w.Write([]byte(`{"ok":true,"result":{"id":1,"is_bot":true,"username":"newszxcn_test_bot"}}`))
+		case "/bottest-token/getUpdates":
+			code, _ := pairingCode.Load().(string)
+			_, _ = fmt.Fprintf(w, `{"ok":true,"result":[{"update_id":6,"message":{"text":"/start wrong-code","chat":{"id":987654321,"type":"private","first_name":"Other"}}},{"update_id":7,"message":{"text":"/start %s","chat":{"id":123456789,"type":"private","first_name":"Zhenxi","last_name":"Shen"}}}]}`, code)
+		case "/bottest-token/sendMessage":
+			var message sentMessage
+			if err := json.NewDecoder(r.Body).Decode(&message); err != nil {
+				t.Fatalf("decode Telegram message: %v", err)
+			}
+			sent = append(sent, message)
+			_, _ = w.Write([]byte(`{"ok":true,"result":{"message_id":8}}`))
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer telegramServer.Close()
+
+	a := newTestApp(t)
+	stopTestWorkers(a)
+	a.telegramURL = telegramServer.URL
+	server := httptest.NewServer(a.Router())
+	defer server.Close()
+	admin := &testClient{t: t, server: server}
+	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("login code=%d body=%v", code, login)
+	}
+
+	var settings SystemSettings
+	if code := admin.do("GET", "/api/admin/settings", nil, &settings); code != http.StatusOK {
+		t.Fatalf("get settings code=%d", code)
+	}
+	payload := systemSettingsPayload(settings)
+	payload["telegramMailEnabled"] = true
+	payload["telegramBotToken"] = "test-token"
+	payload["telegramPrivateChatId"] = "123456789"
+	payload["telegramBodyMode"] = "full"
+	var adminMailboxID string
+	if err := a.db.QueryRow(`SELECT id FROM mailboxes WHERE address='admin@lanqin.local'`).Scan(&adminMailboxID); err != nil {
+		t.Fatal(err)
+	}
+	payload["telegramMailboxIds"] = []string{adminMailboxID}
+	if code := admin.do("POST", "/api/admin/settings", payload, &settings); code != http.StatusOK {
+		t.Fatalf("save Telegram settings code=%d settings=%+v", code, settings)
+	}
+	if !settings.TelegramMailEnabled || !settings.TelegramBotTokenSet || settings.TelegramPrivateChatID != "123456789" || settings.TelegramBodyMode != "full" {
+		t.Fatalf("unexpected Telegram settings: %+v", settings)
+	}
+	if a.config().TelegramBotToken != "test-token" {
+		t.Fatal("Telegram token was not persisted in runtime config")
+	}
+
+	var pairing struct {
+		Code     string `json:"code"`
+		DeepLink string `json:"deepLink"`
+	}
+	if code := admin.do("POST", "/api/admin/settings/telegram/pair", map[string]string{"botToken": ""}, &pairing); code != http.StatusOK || pairing.Code == "" || !strings.Contains(pairing.DeepLink, pairing.Code) {
+		t.Fatalf("create pairing code=%d response=%+v", code, pairing)
+	}
+	pairingCode.Store(pairing.Code)
+	var discovered map[string]string
+	if code := admin.do("POST", "/api/admin/settings/telegram/discover", map[string]string{"botToken": "", "pairingCode": pairing.Code}, &discovered); code != http.StatusOK {
+		t.Fatalf("discover chat code=%d response=%v", code, discovered)
+	}
+	if discovered["chatId"] != "123456789" || discovered["displayName"] != "Zhenxi Shen" {
+		t.Fatalf("unexpected discovered chat: %v", discovered)
+	}
+	var testResult map[string]any
+	if code := admin.do("POST", "/api/admin/settings/telegram/test", map[string]string{"botToken": "", "chatId": ""}, &testResult); code != http.StatusOK {
+		t.Fatalf("test Telegram code=%d response=%v", code, testResult)
+	}
+	if len(sent) != 1 || sent[0].ChatID != "123456789" || !strings.Contains(sent[0].Text, "通知测试") {
+		t.Fatalf("unexpected Telegram test message: %+v", sent)
+	}
+
+	sent = nil
+	receivedAt := time.Date(2026, 8, 6, 9, 30, 0, 0, time.UTC)
+	a.enqueueTelegramMailNotification(context.Background(), "mail_test_telegram", storedMessage{
+		MailboxID:     adminMailboxID,
+		RecipientAddr: "admin@example.com",
+		Subject:       "账单 <已生成>",
+		From:          "billing@example.net",
+		FromName:      "Billing & Support",
+		ReceivedAt:    receivedAt,
+		BodyText:      "这是邮件正文，验证码是 846981，包含 <VIP> & 续费信息。",
+	}, []AttachmentInput{{Filename: "账单-2026.pdf"}})
+	if err := a.processDueTelegramMailNotifications(context.Background()); err != nil {
+		t.Fatalf("process Telegram mail queue: %v", err)
+	}
+	if len(sent) != 1 {
+		t.Fatalf("expected one queued Telegram message, got %d", len(sent))
+	}
+	text := sent[0].Text
+	for _, expected := range []string{"新邮件通知", "Billing &amp; Support", "账单 &lt;已生成&gt;", "admin@example.com", "邮件正文", "账单-2026.pdf", "846981", "&lt;VIP&gt; &amp; 续费信息"} {
+		if !strings.Contains(text, expected) {
+			t.Fatalf("Telegram mail message missing %q: %s", expected, text)
+		}
+	}
+	if sent[0].ReplyMarkup == nil {
+		t.Fatal("Telegram OTP copy button was not included")
+	}
+	var delivered, storedPayload string
+	var telegramMessageID int64
+	if err := a.db.QueryRow(`SELECT COALESCE(delivered_at,''),payload_json,telegram_message_id FROM telegram_mail_outbox WHERE message_id=?`, "mail_test_telegram").Scan(&delivered, &storedPayload, &telegramMessageID); err != nil || delivered == "" {
+		t.Fatalf("Telegram queue was not marked delivered: delivered=%q err=%v", delivered, err)
+	}
+	if storedPayload != "{}" || telegramMessageID != 8 {
+		t.Fatalf("delivered payload was not cleared safely: payload=%q telegramMessageId=%d", storedPayload, telegramMessageID)
+	}
+
+	a.enqueueTelegramMailNotification(context.Background(), "mail_pending_before_disable", storedMessage{MailboxID: adminMailboxID, RecipientAddr: "admin@lanqin.local", Subject: "pending", From: "sender@example.com", ReceivedAt: time.Now(), BodyText: "pending"}, nil)
+	disablePayload := systemSettingsPayload(settings)
+	disablePayload["telegramMailEnabled"] = false
+	if code := admin.do("POST", "/api/admin/settings", disablePayload, &settings); code != http.StatusOK {
+		t.Fatalf("disable Telegram settings code=%d", code)
+	}
+	var pending int
+	if err := a.db.QueryRow(`SELECT COUNT(1) FROM telegram_mail_outbox WHERE delivered_at IS NULL`).Scan(&pending); err != nil || pending != 0 {
+		t.Fatalf("pending Telegram queue was not cleared: count=%d err=%v", pending, err)
+	}
+}
+
+func TestTelegramSettingsRejectEnabledWithoutCredentials(t *testing.T) {
+	a := newTestApp(t)
+	server := httptest.NewServer(a.Router())
+	defer server.Close()
+	admin := &testClient{t: t, server: server}
+	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("login code=%d", code)
+	}
+	var settings SystemSettings
+	if code := admin.do("GET", "/api/admin/settings", nil, &settings); code != http.StatusOK {
+		t.Fatalf("get settings code=%d", code)
+	}
+	payload := systemSettingsPayload(settings)
+	payload["telegramMailEnabled"] = true
+	var body map[string]any
+	if code := admin.do("POST", "/api/admin/settings", payload, &body); code != http.StatusBadRequest {
+		t.Fatalf("expected missing Telegram credentials to fail, code=%d body=%v", code, body)
+	}
+}
+
+func TestTelegramNetworkErrorDoesNotExposeToken(t *testing.T) {
+	server := httptest.NewServer(http.HandlerFunc(func(http.ResponseWriter, *http.Request) {}))
+	serverURL := server.URL
+	server.Close()
+
+	a := newTestApp(t)
+	stopTestWorkers(a)
+	a.telegramURL = serverURL
+	const token = "123456:secret-token-value"
+	err := a.sendTelegramMessage(context.Background(), token, "123456789", "test")
+	if err == nil {
+		t.Fatal("expected Telegram network request to fail")
+	}
+	if strings.Contains(err.Error(), token) || strings.Contains(err.Error(), "secret-token-value") {
+		t.Fatalf("Telegram error exposed Bot Token: %v", err)
+	}
+}
+
+func TestTelegramOTPDetectionAndMessageBudget(t *testing.T) {
+	body := "本次登录验证码为 846981，请在十分钟内完成验证。\n\nOn yesterday wrote:\n旧验证码是 112233"
+	cleaned := stripTelegramQuotedContent(body)
+	if otp := detectTelegramOTP("登录验证", cleaned); otp != "846981" {
+		t.Fatalf("unexpected OTP %q", otp)
+	}
+	if otp := detectTelegramOTP("验证码", "验证码可能是 123456 或 654321，请联系客服确认"); otp != "" {
+		t.Fatalf("ambiguous OTP should not be selected: %q", otp)
+	}
+	message := formatTelegramMailMessage(telegramMailPayload{
+		From:       strings.Repeat("R&D <team@example.com> ", 30),
+		Recipient:  "admin@example.com",
+		Subject:    strings.Repeat("超长主题 & <test> ", 50),
+		ReceivedAt: time.Now().UTC().Format(time.RFC3339Nano),
+		Body:       strings.Repeat("正文内容 & <重要> ", 1000),
+		BodyMode:   "full",
+		OTP:        "846981",
+		AttachmentNames: []string{
+			strings.Repeat("附件&", 80), strings.Repeat("报价<", 80), strings.Repeat("说明", 80),
+		},
+		AttachmentCount: 12,
+	})
+	if got := utf8.RuneCountInString(message.HTML); got > telegramMessageBudget {
+		t.Fatalf("Telegram HTML exceeds budget: %d", got)
+	}
+	if !strings.Contains(message.HTML, "&amp;") || !strings.Contains(message.HTML, "&lt;") || !strings.Contains(message.HTML, "<code>846981</code>") {
+		t.Fatalf("message escaping or OTP formatting missing: %s", message.HTML)
+	}
+	if markup := telegramCopyMarkup(message.OTP); markup == nil {
+		t.Fatal("copy_text markup missing")
+	}
+}
+
+func TestTelegramIQiyiOTPDetection(t *testing.T) {
+	subject := "825534 是您的动态安全验证码"
+	body := "哈喽 iqiyi02@newszxcn.com 您正在进行爱奇艺账号的安全验证，以下是您的动态验证码：825534 如果这不是您的邮件，请忽略此邮件，请勿回复 手机·电视 其他 APP 在 LG, Samsung 等应用商店搜索 iQiyi 即可获得 Copyright © 2021 iQiyi All Rights Reserved"
+	otp := detectTelegramOTP(subject, body)
+	if otp != "825534" {
+		t.Fatalf("iQiyi OTP not detected: %q", otp)
+	}
+	message := formatTelegramMailMessage(telegramMailPayload{Subject: subject, From: "no_reply_intl@iq.com", Recipient: "iqiyi02@newszxcn.com", ReceivedAt: time.Now().UTC().Format(time.RFC3339Nano), Body: body, OTP: otp})
+	if !strings.Contains(message.HTML, "<code>825534</code>") || telegramCopyMarkup(message.OTP) == nil {
+		t.Fatalf("iQiyi OTP section or copy button missing: %+v", message)
+	}
+}
+
+func TestTelegramForwardedGateOTPAndLinks(t *testing.T) {
+	body := `---------- Forwarded message ---------
+Date: 2026年8月6日周四 17:59
+Subject: 登录验证码 (https://www.gate.com)
+
+Gate 检测到您的账号正试图从此 IP 获得登录验证码：
+IP: 87.83.105.229
+如为您本人登录，请输入如下验证码完成操作：
+311665
+如非本人操作，请点击此处禁用账户 <https://data.gate.com/track/click?token=abcdefghijklmnopqrstuvwxyz0123456789abcdefghijklmnopqrstuvwxyz0123456789>`
+	if otp := detectTelegramOTP("Fwd: 登录验证码 (https://www.gate.com)", body); otp != "311665" {
+		t.Fatalf("forwarded Gate OTP not detected: %q", otp)
+	}
+	if otp := detectTelegramOTP("登录验证码", "日期 2026-08-06，验证码将在稍后发送"); otp != "" {
+		t.Fatalf("year was incorrectly detected as OTP: %q", otp)
+	}
+	message := formatTelegramMailMessage(telegramMailPayload{
+		From: "no-reply@alert.gate.com", Recipient: "admin@example.com", Subject: "登录验证码",
+		ReceivedAt: time.Now().UTC().Format(time.RFC3339Nano), Body: body, BodyMode: "full", OTP: "311665",
+	})
+	if !strings.Contains(message.HTML, `<a href="https://www.gate.com">https://www.gate.com</a>`) {
+		t.Fatalf("normal URL was not linkified: %s", message.HTML)
+	}
+	if !strings.Contains(message.HTML, `>🔗 data.gate.com 链接</a>`) {
+		t.Fatalf("long tracking URL was not shortened: %s", message.HTML)
+	}
+	if strings.Contains(message.HTML, "&lt;a href=") || utf8.RuneCountInString(message.HTML) > telegramMessageBudget {
+		t.Fatalf("generated Telegram HTML is invalid or too long: %s", message.HTML)
+	}
+	markup := telegramCopyMarkup(message.OTP)
+	buttons, ok := markup["inline_keyboard"].([][]map[string]any)
+	if !ok || len(buttons) != 1 || len(buttons[0]) != 1 || buttons[0][0]["text"] != "复制验证码" {
+		t.Fatalf("copy OTP button missing: %#v", markup)
+	}
+}
+
+func TestTelegramPseudoHTMLAndBodyCharset(t *testing.T) {
+	pseudo := `<html><head><style>.hidden{display:none}</style></head><body><p>验证码：778899</p><div>欢迎登录</div></body></html>`
+	text := telegramMessageBody(storedMessage{BodyText: pseudo})
+	if strings.Contains(text, "display:none") || strings.Contains(text, "<p>") || !strings.Contains(text, "778899") {
+		t.Fatalf("pseudo HTML was not cleaned: %q", text)
+	}
+
+	encoded, err := simplifiedchinese.GBK.NewEncoder().Bytes([]byte("您的验证码是 445566"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	raw := append([]byte("From: sender@example.com\r\nTo: admin@example.com\r\nSubject: GBK\r\nContent-Type: text/plain; charset=gbk\r\n\r\n"), encoded...)
+	a := newTestApp(t)
+	stopTestWorkers(a)
+	msg, _, err := a.parseMaildirMessage(raw, "admin@example.com")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !strings.Contains(msg.BodyText, "445566") || !strings.Contains(msg.BodyText, "验证码") {
+		t.Fatalf("GBK body was not decoded: %q", msg.BodyText)
+	}
+}
+
+func TestTelegramRetryAfterAndPermanentErrors(t *testing.T) {
+	tests := []struct {
+		name       string
+		status     int
+		response   string
+		retryAfter time.Duration
+	}{
+		{name: "rate limit", status: http.StatusTooManyRequests, response: `{"ok":false,"error_code":429,"description":"Too Many Requests","parameters":{"retry_after":17}}`, retryAfter: 17 * time.Second},
+		{name: "unauthorized", status: http.StatusUnauthorized, response: `{"ok":false,"error_code":401,"description":"Unauthorized"}`},
+	}
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
+				w.Header().Set("Content-Type", "application/json")
+				w.WriteHeader(tc.status)
+				_, _ = w.Write([]byte(tc.response))
+			}))
+			defer server.Close()
+			a := newTestApp(t)
+			stopTestWorkers(a)
+			a.telegramURL = server.URL
+			err := a.sendTelegramMessage(context.Background(), "test-token", "123456", "test")
+			var apiErr *telegramAPIError
+			if !errors.As(err, &apiErr) || apiErr.ErrorCode != tc.status || apiErr.RetryAfter != tc.retryAfter {
+				t.Fatalf("unexpected Telegram error: %#v", err)
+			}
+		})
+	}
+}
+
+func TestTelegramMailboxScopeAndOriginalRecipient(t *testing.T) {
+	a := newTestApp(t)
+	stopTestWorkers(a)
+	var mailboxID string
+	if err := a.db.QueryRow(`SELECT id FROM mailboxes WHERE address='admin@lanqin.local'`).Scan(&mailboxID); err != nil {
+		t.Fatal(err)
+	}
+	a.updateConfig(func(cfg *Config) {
+		cfg.TelegramMailEnabled = true
+		cfg.TelegramBotToken = "test-token"
+		cfg.TelegramPrivateChatID = "123456"
+		cfg.TelegramMailboxIDs = mailboxID
+	})
+	a.enqueueTelegramMailNotification(context.Background(), "scope-denied", storedMessage{MailboxID: "another-mailbox", RecipientAddr: "other@example.com", Subject: "denied"}, nil)
+	a.enqueueTelegramMailNotification(context.Background(), "scope-allowed", storedMessage{MailboxID: mailboxID, RecipientAddr: "admin@lanqin.local", Subject: "allowed"}, nil)
+	var count int
+	if err := a.db.QueryRow(`SELECT COUNT(1) FROM telegram_mail_outbox`).Scan(&count); err != nil || count != 1 {
+		t.Fatalf("unexpected scoped queue count=%d err=%v", count, err)
+	}
+
+	raw := []byte("From: sender@example.com\r\nTo: hidden-list@example.net\r\nDelivered-To: admin@lanqin.local\r\nSubject: recipient\r\n\r\nbody")
+	msg, _, err := a.parseMaildirMessage(raw, "admin@lanqin.local")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if msg.RecipientAddr != "admin@lanqin.local" {
+		t.Fatalf("wrong original recipient: %q", msg.RecipientAddr)
+	}
+}
+
+func TestTelegramBadRequestFallsBackToPlainText(t *testing.T) {
+	var calls atomic.Int32
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		var payload map[string]any
+		if err := json.NewDecoder(r.Body).Decode(&payload); err != nil {
+			t.Fatal(err)
+		}
+		if calls.Add(1) == 1 {
+			w.WriteHeader(http.StatusBadRequest)
+			_, _ = w.Write([]byte(`{"ok":false,"error_code":400,"description":"Bad Request: can't parse entities"}`))
+			return
+		}
+		if _, exists := payload["parse_mode"]; exists {
+			t.Fatal("plain-text fallback still included parse_mode")
+		}
+		_, _ = w.Write([]byte(`{"ok":true,"result":{"message_id":99}}`))
+	}))
+	defer server.Close()
+	a := newTestApp(t)
+	stopTestWorkers(a)
+	a.telegramURL = server.URL
+	messageID, err := a.deliverTelegramMailMessage(context.Background(), "test-token", "123456", telegramFormattedMessage{HTML: "<b>broken", PlainText: "safe fallback", OTP: "123456"})
+	if err != nil || messageID != 99 || calls.Load() != 2 {
+		t.Fatalf("fallback failed: messageId=%d calls=%d err=%v", messageID, calls.Load(), err)
+	}
+}
+
+func TestTelegramMalformedQueueItemDoesNotBlockLaterMail(t *testing.T) {
+	var calls atomic.Int32
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
+		calls.Add(1)
+		w.Header().Set("Content-Type", "application/json")
+		_, _ = w.Write([]byte(`{"ok":true,"result":{"message_id":7}}`))
+	}))
+	defer server.Close()
+	a := newTestApp(t)
+	stopTestWorkers(a)
+	a.telegramURL = server.URL
+	a.updateConfig(func(cfg *Config) {
+		cfg.TelegramMailEnabled = true
+		cfg.TelegramBotToken = "test-token"
+		cfg.TelegramPrivateChatID = "123456"
+	})
+	now := a.now().UTC().Format(time.RFC3339Nano)
+	if _, err := a.db.Exec(`INSERT INTO telegram_mail_outbox(id,message_id,payload_json,next_attempt_at,created_at,updated_at) VALUES('bad','bad','{',?,?,?),('good','good',?, ?, ?, ?)`, now, now, now, jsonEncode(telegramMailPayload{Subject: "good", From: "sender@example.com", Recipient: "admin@example.com", ReceivedAt: now, Body: "body"}), now, now, now); err != nil {
+		t.Fatal(err)
+	}
+	if err := a.processDueTelegramMailNotifications(context.Background()); err != nil {
+		t.Fatal(err)
+	}
+	var badAttempts int
+	var delivered string
+	if err := a.db.QueryRow(`SELECT attempt_count FROM telegram_mail_outbox WHERE id='bad'`).Scan(&badAttempts); err != nil {
+		t.Fatal(err)
+	}
+	if err := a.db.QueryRow(`SELECT COALESCE(delivered_at,'') FROM telegram_mail_outbox WHERE id='good'`).Scan(&delivered); err != nil {
+		t.Fatal(err)
+	}
+	if badAttempts != telegramMailMaxAttempts || delivered == "" || calls.Load() != 1 {
+		t.Fatalf("malformed queue handling failed: attempts=%d delivered=%q calls=%d", badAttempts, delivered, calls.Load())
+	}
+}

apps/api/internal/app/turnstile.go

@@ -31,7 +31,11 @@ func (a *App) verifyTurnstile(ctx context.Context, token, remoteIP string) error
 	if ip := normalizeRemoteIP(remoteIP); ip != "" {
 		form.Set("remoteip", ip)
 	}
-	req, err := http.NewRequestWithContext(ctx, http.MethodPost, "https://challenges.cloudflare.com/turnstile/v0/siteverify", strings.NewReader(form.Encode()))
+	verifyURL := strings.TrimSpace(a.turnstileURL)
+	if verifyURL == "" {
+		verifyURL = "https://challenges.cloudflare.com/turnstile/v0/siteverify"
+	}
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, verifyURL, strings.NewReader(form.Encode()))
 	if err != nil {
 		return err
 	}

apps/api/internal/app/two_factor.go

@@ -30,6 +30,25 @@ func newTOTPSecret() (string, error) {
 	return base32.StdEncoding.WithPadding(base32.NoPadding).EncodeToString(buf), nil
 }
 
+func newTwoFactorRecoveryCode() (string, error) {
+	buf := make([]byte, 8)
+	if _, err := rand.Read(buf); err != nil {
+		return "", err
+	}
+	value := base32.StdEncoding.WithPadding(base32.NoPadding).EncodeToString(buf)
+	if len(value) > 10 {
+		value = value[:10]
+	}
+	return value[:5] + "-" + value[5:], nil
+}
+
+func normalizeRecoveryCode(code string) string {
+	code = strings.ToUpper(strings.TrimSpace(code))
+	code = strings.ReplaceAll(code, "-", "")
+	code = strings.ReplaceAll(code, " ", "")
+	return code
+}
+
 func totpProvisioningURI(issuer, account, secret string) string {
 	issuer = strings.TrimSpace(issuer)
 	account = strings.TrimSpace(account)
@@ -121,6 +140,57 @@ func (a *App) deleteLoginChallenge(ctx context.Context, id string) {
 	_, _ = a.db.ExecContext(ctx, `DELETE FROM login_challenges WHERE id=?`, id)
 }
 
+func (a *App) generateTwoFactorRecoveryCodes(ctx context.Context, tx *sql.Tx, userID string) ([]string, error) {
+	if _, err := tx.ExecContext(ctx, `DELETE FROM two_factor_recovery_codes WHERE user_id=?`, userID); err != nil {
+		return nil, err
+	}
+	now := a.now().UTC().Format(time.RFC3339Nano)
+	codes := make([]string, 0, 8)
+	for len(codes) < 8 {
+		code, err := newTwoFactorRecoveryCode()
+		if err != nil {
+			return nil, err
+		}
+		normalized := normalizeRecoveryCode(code)
+		_, err = tx.ExecContext(ctx, `INSERT INTO two_factor_recovery_codes(id,user_id,code_hash,created_at) VALUES(?,?,?,?)`,
+			newID("rcv"), userID, hashToken(normalized), now)
+		if err != nil {
+			if strings.Contains(strings.ToLower(err.Error()), "unique") {
+				continue
+			}
+			return nil, err
+		}
+		codes = append(codes, code)
+	}
+	return codes, nil
+}
+
+func (a *App) consumeTwoFactorRecoveryCode(ctx context.Context, userID, code string) (bool, error) {
+	normalized := normalizeRecoveryCode(code)
+	if len(normalized) < 8 {
+		return false, nil
+	}
+	tx, err := a.db.BeginTx(ctx, nil)
+	if err != nil {
+		return false, err
+	}
+	defer tx.Rollback()
+	var id string
+	if err := tx.QueryRowContext(ctx, `SELECT id FROM two_factor_recovery_codes WHERE user_id=? AND code_hash=? AND used_at=''`, userID, hashToken(normalized)).Scan(&id); err != nil {
+		if errors.Is(err, sql.ErrNoRows) {
+			return false, nil
+		}
+		return false, err
+	}
+	if _, err := tx.ExecContext(ctx, `UPDATE two_factor_recovery_codes SET used_at=? WHERE id=?`, a.now().UTC().Format(time.RFC3339Nano), id); err != nil {
+		return false, err
+	}
+	if err := tx.Commit(); err != nil {
+		return false, err
+	}
+	return true, nil
+}
+
 func (a *App) loadUserAuthByID(ctx context.Context, id string) (*User, string, error) {
 	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
@@ -212,7 +282,22 @@ func (a *App) handleTwoFactorEnable(w http.ResponseWriter, r *http.Request) {
 		respondError(w, http.StatusUnauthorized, "invalid verification code")
 		return
 	}
-	if _, err := a.db.ExecContext(r.Context(), `UPDATE users SET two_factor_enabled=1, updated_at=? WHERE id=?`, a.now().UTC().Format(time.RFC3339Nano), user.ID); err != nil {
+	tx, err := a.db.BeginTx(r.Context(), nil)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to enable two-factor authentication")
+		return
+	}
+	defer tx.Rollback()
+	if _, err := tx.ExecContext(r.Context(), `UPDATE users SET two_factor_enabled=1, updated_at=? WHERE id=?`, a.now().UTC().Format(time.RFC3339Nano), user.ID); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to enable two-factor authentication")
+		return
+	}
+	recoveryCodes, err := a.generateTwoFactorRecoveryCodes(r.Context(), tx, user.ID)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to generate recovery codes")
+		return
+	}
+	if err := tx.Commit(); err != nil {
 		respondError(w, http.StatusInternalServerError, "failed to enable two-factor authentication")
 		return
 	}
@@ -221,7 +306,7 @@ func (a *App) handleTwoFactorEnable(w http.ResponseWriter, r *http.Request) {
 		respondError(w, http.StatusInternalServerError, "failed to load user")
 		return
 	}
-	respondJSON(w, http.StatusOK, map[string]any{"user": updated})
+	respondJSON(w, http.StatusOK, map[string]any{"user": updated, "recoveryCodes": recoveryCodes})
 }
 
 func (a *App) handleTwoFactorDisable(w http.ResponseWriter, r *http.Request) {
@@ -250,7 +335,21 @@ func (a *App) handleTwoFactorDisable(w http.ResponseWriter, r *http.Request) {
 		respondError(w, http.StatusUnauthorized, "invalid verification code")
 		return
 	}
-	if _, err := a.db.ExecContext(r.Context(), `UPDATE users SET two_factor_secret='', two_factor_enabled=0, updated_at=? WHERE id=?`, a.now().UTC().Format(time.RFC3339Nano), user.ID); err != nil {
+	tx, err := a.db.BeginTx(r.Context(), nil)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to disable two-factor authentication")
+		return
+	}
+	defer tx.Rollback()
+	if _, err := tx.ExecContext(r.Context(), `UPDATE users SET two_factor_secret='', two_factor_enabled=0, updated_at=? WHERE id=?`, a.now().UTC().Format(time.RFC3339Nano), user.ID); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to disable two-factor authentication")
+		return
+	}
+	if _, err := tx.ExecContext(r.Context(), `DELETE FROM two_factor_recovery_codes WHERE user_id=?`, user.ID); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to disable two-factor authentication")
+		return
+	}
+	if err := tx.Commit(); err != nil {
 		respondError(w, http.StatusInternalServerError, "failed to disable two-factor authentication")
 		return
 	}

apps/api/internal/app/types.go

@@ -88,6 +88,7 @@ type MailFolder struct {
 	ID            string `json:"id"`
 	Name          string `json:"name"`
 	Role          string `json:"role"`
+	Icon          string `json:"icon"`
 	SortOrder     int    `json:"sortOrder"`
 	UnreadCount   int    `json:"unreadCount"`
 	TotalCount    int    `json:"totalCount"`

apps/api/internal/app/util.go

@@ -205,6 +205,21 @@ func cleanUsername(value string) (string, error) {
 	return username, nil
 }
 
+func cleanPrimaryEmail(value string) (string, error) {
+	email := normalizeEmail(value)
+	if email == "" || !strings.Contains(email, "@") {
+		return "", errors.New("邮箱地址无效")
+	}
+	parts := strings.SplitN(email, "@", 2)
+	if len(parts) != 2 || parts[0] == "" || parts[1] == "" {
+		return "", errors.New("邮箱地址无效")
+	}
+	if len([]rune(email)) > 254 {
+		return "", errors.New("邮箱地址不能超过 254 个字符")
+	}
+	return email, nil
+}
+
 func dedupeEmails(items []string) []string {
 	seen := map[string]bool{}
 	out := make([]string, 0, len(items))

apps/web/package.json

@@ -36,7 +36,7 @@
     "@tiptap/starter-kit": "^3.27.0",
     "class-variance-authority": "^0.7.0",
     "clsx": "2.1.1",
-    "dompurify": "3.4.12",
+    "dompurify": "3.4.13",
     "lucide-react": "^0.468.0",
     "qrcode.react": "^4.2.0",
     "react": "18.3.1",

apps/web/src/components/auth-guard.tsx

@@ -1,15 +1,19 @@
 import React from "react"
 import { Navigate, useLocation } from "react-router-dom"
-import { useMe, isTimeoutError } from "@/hooks/use-me"
+import { useMe } from "@/hooks/use-me"
 import { AuthLoading, AuthError } from "@/components/auth-states"
+import { isUnauthorizedError } from "@/lib/api"
 
 export function AuthGuard({ children }: { children: React.ReactNode }) {
   const me = useMe()
   const location = useLocation()
 
   if (me.isLoading) return <AuthLoading />
-  if (me.isError && isTimeoutError(me.error)) return <AuthError message={me.error.message} onRetry={() => me.refetch()} />
-  if (me.isError || !me.data?.user) return <Navigate to="/login" replace state={{ from: location.pathname }} />
+  if (me.isError && !isUnauthorizedError(me.error)) return <AuthError message={me.error.message} onRetry={() => me.refetch()} />
+  if (me.isError || !me.data?.user) {
+    const from = `${location.pathname}${location.search}${location.hash}`
+    return <Navigate to="/login" replace state={{ from }} />
+  }
 
   return <>{children}</>
 }

apps/web/src/components/auth-states.tsx

@@ -1,17 +1,17 @@
 import { Button } from "@/components/ui/button"
 
 export function AuthLoading() {
-  return <div className="grid min-h-screen place-items-center text-muted-foreground">加载中...</div>
+  return <main className="grid min-h-screen place-items-center text-muted-foreground">加载中...</main>
 }
 
 export function AuthError({ message, onRetry }: { message: string; onRetry: () => void }) {
   return (
-    <div className="grid min-h-screen place-items-center bg-background px-4">
+    <main className="grid min-h-screen place-items-center bg-background px-4">
       <div className="w-full max-w-sm space-y-4 text-center">
-        <div className="text-sm font-medium">无法连接后端服务</div>
+        <div className="text-sm font-medium">服务暂时不可用</div>
         <div className="text-sm text-muted-foreground">{message}</div>
-        <Button type="button" variant="outline" onClick={onRetry}>重新加载</Button>
+        <Button type="button" variant="outline" onClick={onRetry}>重新连接</Button>
       </div>
-    </div>
+    </main>
   )
 }

apps/web/src/components/confirm-dialog.tsx

@@ -26,12 +26,12 @@ export function ConfirmDialog({
 }: ConfirmDialogProps) {
   return (
     <Dialog open={open} onOpenChange={onOpenChange}>
-      <DialogContent>
+      <DialogContent className="w-[calc(100vw-2rem)] max-w-lg rounded-lg">
         <DialogHeader>
           <DialogTitle>{title}</DialogTitle>
         </DialogHeader>
         {description && <div className="text-sm text-muted-foreground">{description}</div>}
-        <DialogFooter>
+        <DialogFooter className="gap-2 [&>button]:min-h-11 sm:[&>button]:min-h-9">
           <Button type="button" variant="outline" onClick={() => onOpenChange(false)} disabled={pending}>
             {cancelText}
           </Button>

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

@@ -30,7 +30,7 @@ import {
 const adminSections: { key: string; label: string; icon: React.ReactNode; permissions: PermissionKey[] }[] = [
   { 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: "permissionGroups", label: "权限配置", 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"] },
@@ -108,7 +108,7 @@ 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.loginName || user.email}</span>
+                    <span className="truncate text-xs text-muted-foreground">{user.email}</span>
                   </div>
                   <Badge variant={user.role === "admin" ? "default" : "secondary"} className="ml-auto text-[10px]">
                     {user.role === "admin" ? "管理员" : "普通用户"}

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

@@ -5,18 +5,18 @@ import { cva, type VariantProps } from "class-variance-authority"
 import { cn } from "@/lib/utils"
 
 const buttonVariants = cva(
-  "inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:size-4 [&_svg]:shrink-0",
+  "inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 focus-visible:ring-offset-background disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:size-4 [&_svg]:shrink-0",
   {
     variants: {
       variant: {
         default:
-          "bg-primary text-primary-foreground shadow hover:bg-primary/90",
+          "bg-primary text-primary-foreground hover:bg-primary/90",
         destructive:
-          "bg-destructive text-destructive-foreground shadow-sm hover:bg-destructive/90",
+          "bg-destructive text-destructive-foreground hover:bg-destructive/90",
         outline:
-          "border border-input bg-background shadow-sm hover:bg-accent hover:text-accent-foreground",
+          "border border-input bg-background hover:bg-accent hover:text-accent-foreground",
         secondary:
-          "bg-secondary text-secondary-foreground shadow-sm hover:bg-secondary/80",
+          "bg-secondary text-secondary-foreground hover:bg-secondary/80",
         ghost: "hover:bg-accent hover:text-accent-foreground",
         link: "text-primary underline-offset-4 hover:underline",
       },

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

@@ -9,7 +9,7 @@ const Card = React.forwardRef<
   <div
     ref={ref}
     className={cn(
-      "rounded-xl border bg-card text-card-foreground shadow",
+      "rounded-lg border bg-card text-card-foreground shadow-sm",
       className
     )}
     {...props}

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

@@ -8,7 +8,7 @@ const Input = React.forwardRef<HTMLInputElement, React.ComponentProps<"input">>(
       <input
         type={type}
         className={cn(
-          "flex h-9 w-full rounded-md border border-input bg-transparent px-3 py-1 text-base shadow-sm transition-colors file:border-0 file:bg-transparent file:text-sm file:font-medium file:text-foreground placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:cursor-not-allowed disabled:opacity-50 md:text-sm",
+          "flex h-9 w-full rounded-md border border-input bg-transparent px-3 py-1 text-base shadow-sm transition-colors file:border-0 file:bg-transparent file:text-sm file:font-medium file:text-foreground placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 focus-visible:ring-offset-background disabled:cursor-not-allowed disabled:opacity-50 md:text-sm",
           className
         )}
         ref={ref}

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

@@ -17,7 +17,7 @@ const SelectTrigger = React.forwardRef<
   <SelectPrimitive.Trigger
     ref={ref}
     className={cn(
-      "flex h-9 w-full items-center justify-between whitespace-nowrap rounded-md border border-input bg-transparent px-3 py-2 text-sm shadow-sm ring-offset-background data-[placeholder]:text-muted-foreground focus:outline-none focus:ring-1 focus:ring-ring disabled:cursor-not-allowed disabled:opacity-50 [&>span]:line-clamp-1",
+      "flex h-9 w-full items-center justify-between whitespace-nowrap rounded-md border border-input bg-transparent px-3 py-2 text-sm shadow-sm ring-offset-background data-[placeholder]:text-muted-foreground focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50 [&>span]:line-clamp-1",
       className
     )}
     {...props}

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

@@ -9,7 +9,7 @@ const Textarea = React.forwardRef<
   return (
     <textarea
       className={cn(
-        "flex min-h-[60px] w-full rounded-md border border-input bg-transparent px-3 py-2 text-base shadow-sm placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:cursor-not-allowed disabled:opacity-50 md:text-sm",
+        "flex min-h-[60px] w-full rounded-md border border-input bg-transparent px-3 py-2 text-base shadow-sm placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 focus-visible:ring-offset-background disabled:cursor-not-allowed disabled:opacity-50 md:text-sm",
         className
       )}
       ref={ref}

apps/web/src/hooks/use-me.ts

@@ -1,5 +1,5 @@
 import { useQuery, type UseQueryOptions } from "@tanstack/react-query"
-import { api } from "@/lib/api"
+import { api, isUnauthorizedError } from "@/lib/api"
 import type { User } from "@/lib/api"
 
 type MeResponse = { user: User }
@@ -10,11 +10,7 @@ export function useMe(
   return useQuery({
     queryKey: ["me"],
     queryFn: api.me,
-    retry: 1,
+    retry: (failureCount, error) => !isUnauthorizedError(error) && failureCount < 1,
     ...options,
   })
 }
-
-export function isTimeoutError(error: unknown): boolean {
-  return error instanceof Error && error.message.includes("请求超时")
-}

apps/web/src/index.css

@@ -5,33 +5,34 @@
 @layer base {
   :root {
     --background: 0 0% 100%;
-    --foreground: 222.2 84% 4.9%;
+    --foreground: 0 0% 9%;
     --card: 0 0% 100%;
-    --card-foreground: 222.2 84% 4.9%;
+    --card-foreground: 0 0% 9%;
     --popover: 0 0% 100%;
-    --popover-foreground: 222.2 84% 4.9%;
-    --primary: 224 44% 12%;
+    --popover-foreground: 0 0% 9%;
+    --primary: 0 0% 12%;
     --primary-foreground: 0 0% 98%;
-    --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%;
+    --secondary: 0 0% 96.1%;
+    --secondary-foreground: 0 0% 12%;
+    --muted: 0 0% 96.1%;
+    --muted-foreground: 0 0% 42%;
+    --accent: 0 0% 95%;
+    --accent-foreground: 0 0% 12%;
     --destructive: 358 88% 61%;
     --destructive-foreground: 0 0% 98%;
-    --border: 214.3 31.8% 91.4%;
-    --input: 214.3 31.8% 91.4%;
-    --ring: 216 22% 42%;
+    --border: 0 0% 89.8%;
+    --input: 0 0% 82%;
+    --ring: 0 0% 32%;
     --radius: 0.5rem;
+    --app-sidebar-width: 18rem;
     --sidebar-background: 0 0% 100%;
-    --sidebar-foreground: 222.2 84% 4.9%;
-    --sidebar-primary: 224 44% 12%;
+    --sidebar-foreground: 0 0% 16%;
+    --sidebar-primary: 0 0% 12%;
     --sidebar-primary-foreground: 0 0% 98%;
-    --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%;
+    --sidebar-accent: 0 0% 95%;
+    --sidebar-accent-foreground: 0 0% 12%;
+    --sidebar-border: 0 0% 89.8%;
+    --sidebar-ring: 0 0% 42%;
   }
 
   * { @apply border-border; }
@@ -85,7 +86,7 @@
 @layer components {
   .mail-shell-grid {
     display: grid;
-    grid-template-columns: clamp(236px, 17vw, 344px) minmax(0, 1fr);
+    grid-template-columns: var(--app-sidebar-width, 18rem) minmax(0, 1fr);
   }
 
   .mail-content-grid {

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

@@ -57,7 +57,7 @@ export type AdminOverview = { users: number; activeUsers: number; domains: numbe
 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; 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; sortOrder: number; unreadCount: number; totalCount: number; uidValidity: number; uidNext: number; highestModseq: number }
+export type MailFolder = { id: string; name: string; role: string; icon: 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 = {
@@ -233,10 +233,20 @@ export type SystemSettings = {
   externalImapGmailClientSecretSet: boolean
   externalImapOutlookClientId: string
   externalImapOutlookClientSecretSet: boolean
+  telegramMailEnabled: boolean
+  telegramBotTokenSet: boolean
+  telegramPrivateChatId: string
+  telegramBodyMode: "summary" | "full"
+  telegramMailboxIds: string[]
+  telegramIncludeUnregistered: boolean
 }
-export type SystemSettingsPayload = Omit<SystemSettings, "smtpPasswordSet" | "turnstileSecretSet" | "externalImapSecretSet" | "externalImapGmailClientSecretSet" | "externalImapOutlookClientSecretSet"> & { smtpPassword: string; turnstileSecretKey: string; externalImapSecretKey: string; externalImapGmailClientSecret: string; externalImapOutlookClientSecret: string }
+export type SystemSettingsPayload = Omit<SystemSettings, "smtpPasswordSet" | "turnstileSecretSet" | "externalImapSecretSet" | "externalImapGmailClientSecretSet" | "externalImapOutlookClientSecretSet" | "telegramBotTokenSet"> & { smtpPassword: string; turnstileSecretKey: string; externalImapSecretKey: string; externalImapGmailClientSecret: string; externalImapOutlookClientSecret: string; telegramBotToken: string }
+export type TelegramPrivateChat = { chatId: string; displayName: string }
+export type TelegramPairing = { code: string; botUsername: string; deepLink: string; expiresAt: string }
 export type PublicDomain = { id: string; name: 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 }
+export type TwoFactorEnableResponse = { user: User; recoveryCodes: string[] }
+export type BulkMoveResult = { ok: boolean; moved: number; failed: number; message: string; items: { id: string; mailboxId?: string; ok: boolean; message: string }[] }

apps/web/src/lib/api.ts

@@ -1,9 +1,20 @@
-import type { User, AdminUser, AdminOverview, Domain, Mailbox, Alias, MailFolder, 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"
+import type { User, AdminUser, AdminOverview, Domain, Mailbox, Alias, MailFolder, 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, TwoFactorEnableResponse, BulkMoveResult, TelegramPrivateChat, TelegramPairing } from "./api-types"
 export * from "./api-types"
 
 const REQUEST_TIMEOUT_MS = 15_000
 const MAIL_DELIVERY_TIMEOUT_MS = 60_000
 
+export class ApiError extends Error {
+  constructor(message: string, readonly status: number) {
+    super(message)
+    this.name = "ApiError"
+  }
+}
+
+export function isUnauthorizedError(error: unknown): boolean {
+  return error instanceof ApiError && error.status === 401
+}
+
 export type MailSearchParams = {
   q?: string
   from?: string
@@ -45,40 +56,37 @@ function appendMailSearchParams(params: URLSearchParams, search: MailSearchParam
 async function request<T>(path: string, init: RequestInit & { timeoutMs?: number } = {}): Promise<T> {
   const { timeoutMs, ...requestInit } = init
   const controller = new AbortController()
-  const timeout = window.setTimeout(() => controller.abort(), timeoutMs || REQUEST_TIMEOUT_MS)
+  let timedOut = false
+  const timeout = window.setTimeout(() => {
+    timedOut = true
+    controller.abort()
+  }, timeoutMs || REQUEST_TIMEOUT_MS)
   const externalSignal = requestInit.signal
+  const abortFromExternalSignal = () => controller.abort()
   if (externalSignal) {
     if (externalSignal.aborted) controller.abort()
-    else externalSignal.addEventListener("abort", () => controller.abort(), { once: true })
+    else externalSignal.addEventListener("abort", abortFromExternalSignal, { once: true })
   }
   try {
     const res = await fetch(path, { credentials: "include", headers: { "Content-Type": "application/json", ...(requestInit.headers || {}) }, ...requestInit, 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)
+      throw new ApiError(message, res.status)
     }
     return res.json() as Promise<T>
   } catch (error) {
     if (error instanceof DOMException && error.name === "AbortError") {
-      throw new Error("请求超时，请检查后端服务是否正常")
+      throw new Error(timedOut ? "请求超时，请检查后端服务是否正常" : "请求已取消")
     }
+    if (error instanceof TypeError) throw new Error("无法连接后端服务，请检查服务状态")
     throw error instanceof Error ? error : new Error("网络请求失败")
   } finally {
     window.clearTimeout(timeout)
+    externalSignal?.removeEventListener("abort", abortFromExternalSignal)
   }
 }
 
-async function requestFile(path: string): Promise<Blob> {
-  const res = await fetch(path, { credentials: "include" })
-  if (!res.ok) {
-    let message = `${res.status} ${res.statusText}`
-    try { const body = await res.json(); message = body.error || message } catch {}
-    throw new Error(message)
-  }
-  return res.blob()
-}
-
 async function uploadForm<T>(path: string, form: FormData): Promise<T> {
   const controller = new AbortController()
   const timeout = window.setTimeout(() => controller.abort(), 5 * 60_000)
@@ -112,7 +120,7 @@ export const api = {
   updateApiToken: (id: string, payload: { name?: string; expiresAt?: string; disabled?: boolean; scopes?: string[] }) => request<APIToken>(`/api/me/api-tokens/${id}`, { method: "POST", body: JSON.stringify(payload) }),
   deleteApiToken: (id: string) => request<{ ok: boolean }>(`/api/me/api-tokens/${id}`, { method: "DELETE" }),
   setupTwoFactor: () => request<{ secret: string; otpauthUrl: string }>("/api/me/2fa/setup", { method: "POST" }),
-  enableTwoFactor: (code: string) => request<{ user: User }>("/api/me/2fa/enable", { method: "POST", body: JSON.stringify({ code }) }),
+  enableTwoFactor: (code: string) => request<TwoFactorEnableResponse>("/api/me/2fa/enable", { method: "POST", body: JSON.stringify({ code }) }),
   disableTwoFactor: (code: string) => request<{ user: User }>("/api/me/2fa/disable", { method: "POST", body: JSON.stringify({ code }) }),
   contacts: () => request<ListResponse<Contact>>("/api/me/contacts"),
   createContact: (payload: { name: string; email: string; note: string }) => request<Contact>("/api/me/contacts", { method: "POST", body: JSON.stringify(payload) }),
@@ -164,8 +172,8 @@ export const api = {
   updatePermissionGroup: (id: string, payload: { name: string; description: string; permissions: PermissionKey[]; limits: PermissionLimits }) => request<PermissionGroup>(`/api/admin/permission-groups/${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/${id}`, { method: "DELETE" }),
-  createUser: (payload: { loginName: string; displayName: string; role: "admin" | "user"; password: string; disabled: boolean; mailboxLimitOverride?: number; permissionGroupIds?: string[] }) => request<AdminUser>("/api/admin/users", { method: "POST", body: JSON.stringify(payload) }),
-  updateUser: (id: string, payload: { loginName?: string; displayName: string; role: "admin" | "user"; disabled: boolean; mailboxLimitOverride?: number; permissionGroupIds?: string[] }) => request<AdminUser>(`/api/admin/users/${id}`, { method: "POST", body: JSON.stringify(payload) }),
+  createUser: (payload: { email: string; displayName: string; role: "user"; password: string; disabled: boolean; mailboxLimitOverride?: number }) => request<AdminUser>("/api/admin/users", { method: "POST", body: JSON.stringify(payload) }),
+  updateUser: (id: string, payload: { email?: 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/${id}`, { method: "DELETE" }),
   domains: () => request<ListResponse<Domain>>("/api/admin/domains"),
@@ -173,7 +181,7 @@ export const api = {
   updateDomain: (id: string, payload: { status: string }) => request<Domain>(`/api/admin/domains/${id}`, { method: "POST", body: JSON.stringify(payload) }),
   deleteDomain: (id: string) => request<{ ok: boolean }>(`/api/admin/domains/${id}`, { method: "DELETE" }),
   mailboxes: () => request<ListResponse<Mailbox>>("/api/admin/mailboxes"),
-  createMailbox: (payload: { domainId: string; localPart: string; displayName: string; password: string; quotaMb: number; role: "admin" | "user"; ownerLoginName?: string; ownerEmail?: string; userId?: string }) => request<Mailbox>("/api/admin/mailboxes", { method: "POST", body: JSON.stringify(payload) }),
+  createMailbox: (payload: { domainId: string; localPart: string; displayName: string; password: string; quotaMb: number; role: "user"; ownerEmail?: string; userId?: string }) => request<Mailbox>("/api/admin/mailboxes", { method: "POST", body: JSON.stringify(payload) }),
   updateMailbox: (id: string, payload: { userId: string; displayName: string; quotaMb: number; status: string }) => request<Mailbox>(`/api/admin/mailboxes/${id}`, { method: "POST", body: JSON.stringify(payload) }),
   deleteMailbox: (id: string) => request<{ ok: boolean }>(`/api/admin/mailboxes/${id}`, { method: "DELETE" }),
   aliases: () => request<ListResponse<Alias>>("/api/admin/aliases"),
@@ -207,6 +215,9 @@ export const api = {
   maildirSyncHealth: () => request<MaildirSyncHealth>("/api/admin/maildir-sync/health"),
   updateSystemSettings: (payload: SystemSettingsPayload) => request<SystemSettings>("/api/admin/settings", { method: "POST", body: JSON.stringify(payload) }),
   testSmtp: (to: string) => request<{ ok: boolean }>("/api/admin/settings/test-smtp", { method: "POST", body: JSON.stringify({ to }), timeoutMs: MAIL_DELIVERY_TIMEOUT_MS }),
+  createTelegramPairing: (botToken: string) => request<TelegramPairing>("/api/admin/settings/telegram/pair", { method: "POST", body: JSON.stringify({ botToken }) }),
+  discoverTelegramChat: (botToken: string, pairingCode: string) => request<TelegramPrivateChat>("/api/admin/settings/telegram/discover", { method: "POST", body: JSON.stringify({ botToken, pairingCode }) }),
+  testTelegram: (botToken: string, chatId: string) => request<{ ok: boolean }>("/api/admin/settings/telegram/test", { method: "POST", body: JSON.stringify({ botToken, chatId }), timeoutMs: MAIL_DELIVERY_TIMEOUT_MS }),
   mailTemplates: () => request<ListResponse<MailTemplate>>("/api/admin/mail-templates"),
   updateMailTemplate: (key: string, payload: { subject: string; bodyText: string; bodyHtml: string }) => request<MailTemplate>(`/api/admin/mail-templates/${encodeURIComponent(key)}`, { method: "POST", body: JSON.stringify(payload) }),
   resetMailTemplate: (key: string) => request<MailTemplate>(`/api/admin/mail-templates/${encodeURIComponent(key)}/reset`, { method: "POST" }),
@@ -222,15 +233,21 @@ export const api = {
   externalMessage: (id: string, remoteId: string) => request<MailMessage>(`/api/mail/external-accounts/${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=${encodeURIComponent(mailboxId)}` : ""}`),
-  createFolder: (payload: { mailboxId?: string; name: string }) => {
+  createFolder: (payload: { mailboxId?: string; name: string; icon?: string }) => {
     const query = payload.mailboxId ? `?mailboxId=${encodeURIComponent(payload.mailboxId)}` : ""
-    return request<MailFolder>(`/api/mail/folders${query}`, { method: "POST", body: JSON.stringify({ name: payload.name }) })
+    return request<MailFolder>(`/api/mail/folders${query}`, { method: "POST", body: JSON.stringify({ name: payload.name, icon: payload.icon }) })
   },
   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=${encodeURIComponent(mailboxId)}` : ""}`, { method: "DELETE" }),
+  deleteFolder: (id: string, mailboxId?: string, folderName?: string) => {
+    const query = new URLSearchParams()
+    if (mailboxId) query.set("mailboxId", mailboxId)
+    if (folderName) query.set("folderName", folderName)
+    const suffix = query.toString()
+    return request<{ ok: boolean; moved: number }>(`/api/mail/folders/${id}${suffix ? `?${suffix}` : ""}`, { 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=${encodeURIComponent(payload.mailboxId)}` : ""
@@ -255,12 +272,13 @@ export const api = {
     if (mailboxId) params.set("mailboxId", mailboxId)
     return request<ListResponse<MailMessage>>(`/api/mail/starred?${params.toString()}`)
   },
-  exportMail: (params: { view: "folder" | "starred" | "label" | "unknown"; mailboxId?: string; folder?: string; labelId?: string }) => {
+  exportMailUrl: (params: { view: "folder" | "starred" | "label" | "unknown"; mailboxId?: string; folder?: string; labelId?: string; messageIds?: 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?${query.toString()}`)
+    params.messageIds?.forEach((id) => query.append("messageId", id))
+    return `/api/mail/export?${query.toString()}`
   },
   importMail: (files: File[], payload: { mailboxId: string; folder: string }) => {
     const form = new FormData()
@@ -298,5 +316,6 @@ export const api = {
   addLabel: (id: string, payload: { name: string; color?: string }) => request<{ labels: MailLabel[] }>(`/api/mail/messages/${id}/labels`, { method: "POST", body: JSON.stringify(payload) }),
   removeLabel: (id: string, labelID: string) => request<{ labels: MailLabel[] }>(`/api/mail/messages/${id}/labels/${labelID}`, { method: "DELETE" }),
   move: (id: string, folder: string) => request<{ ok: boolean }>(`/api/mail/messages/${id}/move`, { method: "POST", body: JSON.stringify({ folder }) }),
+  bulkMove: (ids: string[], folder: string) => request<BulkMoveResult>("/api/mail/messages/bulk-move", { method: "POST", body: JSON.stringify({ ids, folder }) }),
   delete: (id: string) => request<{ ok: boolean }>(`/api/mail/messages/${id}`, { method: "DELETE" }),
 }

apps/web/src/lib/language.tsx

@@ -69,7 +69,6 @@ const exactTranslations: Record<string, Translation> = {
   "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" },
-  "加载邮箱...": { "zh-TW": "載入信箱...", en: "Loading mailboxes..." },
   "未注册邮箱": { "zh-TW": "未註冊信箱", en: "Unregistered 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" },

apps/web/src/lib/navigation.ts

@@ -0,0 +1,4 @@
+export function safeReturnPath(value: unknown, fallback = "/"): string {
+  if (typeof value !== "string" || !value.startsWith("/") || value.startsWith("//")) return fallback
+  return value
+}

apps/web/src/pages/admin.tsx

@@ -24,16 +24,16 @@ import { SystemVersionDialog } from "@/components/system-version-dialog"
 import { useMe } from "@/hooks/use-me"
 import { useToast } from "@/hooks/use-toast"
 import { hasAnyPermission, hasPermission } from "@/lib/permissions"
-import type { PermissionKey } from "@/lib/api-types"
+import type { PermissionKey, TelegramPairing } from "@/lib/api-types"
 
 type Section = "overview" | "users" | "permissionGroups" | "domains" | "mailboxes" | "aliases" | "messages" | "sendAudit" | "settings"
-type SettingsTab = "base" | "smtp" | "storage" | "mail" | "externalImap" | "templates" | "security" | "about"
+type SettingsTab = "base" | "smtp" | "storage" | "mail" | "notifications" | "externalImap" | "templates" | "security" | "about"
 type PendingConfirm = { title: string; description?: string; confirmText: string; onConfirm: () => void }
 
 const sectionMeta: Record<Section, { label: string; frontLabel: string; description: string }> = {
   overview: { label: "数据总览", frontLabel: "数据统计", description: "系统运行、DNS、邮箱和消息状态集中查看。" },
   users: { label: "账号管理", frontLabel: "账号设置", description: "管理登录账号、身份状态、邮箱数量上限和绑定邮箱。" },
-  permissionGroups: { label: "权限配额", frontLabel: "账号配额", description: "配置前台菜单权限、发信频率、附件和邮箱创建额度。" },
+  permissionGroups: { label: "权限配置", frontLabel: "账号权限", description: "配置自定义权限、发信频率、附件和邮箱创建额度。" },
   domains: { label: "域名管理", frontLabel: "邮箱地址", description: "维护邮件域名、DKIM 和 DNS 检测。" },
   mailboxes: { label: "邮箱管理", frontLabel: "邮箱管理", description: "创建、分配、停用邮箱，保持与前台邮箱列表一致。" },
   aliases: { label: "邮件转发", frontLabel: "邮件转发", description: "管理域名转发规则。" },
@@ -58,7 +58,15 @@ const projectRepositoryUrl = "https://github.com/zxyszx/NewSzxcn-Email"
 const projectTelegramUrl = "https://t.me/+EhII7MSyi3QwNDQ5"
 const defaultPermissionLimits: PermissionLimits = { maxAttachmentMb: 25, maxMailboxCount: 9, smtpDailyLimit: 200, smtpMinuteLimit: 20, imapMinuteLimit: 200, pop3MinuteLimit: 150 }
 const defaultMailboxLimitOverride = 9
-const accountLoginName = (user: Pick<AdminUser, "email" | "loginName">) => user.loginName || user.email
+const accountPrimaryEmail = (user: Pick<AdminUser, "email" | "loginName">) => user.email || user.loginName || ""
+
+function compareAdminUsers(left: AdminUser, right: AdminUser) {
+  if (left.role === "admin" && right.role !== "admin") return -1
+  if (left.role !== "admin" && right.role === "admin") return 1
+  return accountPrimaryEmail(left).localeCompare(accountPrimaryEmail(right), "en", { sensitivity: "base" }) ||
+    left.displayName.localeCompare(right.displayName, "en", { sensitivity: "base" }) ||
+    left.createdAt.localeCompare(right.createdAt)
+}
 
 export function AdminPage() {
   const qc = useQueryClient()
@@ -79,7 +87,7 @@ export function AdminPage() {
   const users = useQuery({ queryKey: ["admin", "users"], queryFn: api.users, enabled: !!user && (canUsersView || canMailboxesView) })
   const permissionGroups = useQuery({ queryKey: ["admin", "permission-groups"], queryFn: api.permissionGroups, enabled: !!user && (canPermissionGroupsView || canUsersView) })
   const domains = useQuery({ queryKey: ["admin", "domains"], queryFn: api.domains, enabled: !!user && (canDomainsView || canDNSView || canMailboxesView || canAliasesView || canSettingsView || canTemplatesView) })
-  const mailboxes = useQuery({ queryKey: ["admin", "mailboxes"], queryFn: api.mailboxes, enabled: !!user && (canMailboxesView || canMessagesView) })
+  const mailboxes = useQuery({ queryKey: ["admin", "mailboxes"], queryFn: api.mailboxes, enabled: !!user && (canMailboxesView || canMessagesView || canSettingsView) })
   const aliases = useQuery({ queryKey: ["admin", "aliases"], queryFn: api.aliases, enabled: !!user && canAliasesView })
   const settings = useQuery({ queryKey: ["admin", "settings"], queryFn: api.systemSettings, enabled: !!user && canSettingsView })
   const [params, setParams] = useSearchParams()
@@ -93,6 +101,14 @@ export function AdminPage() {
   const visibleSections = sectionKeys.filter((key) => hasAnyPermission(user, sectionPermissions[key]))
   const rawSection = params.get("section") as Section | null
   const section: Section = rawSection && visibleSections.includes(rawSection) ? rawSection : visibleSections[0] || "overview"
+  const sectionQuery = section === "overview" ? overview
+    : section === "users" ? users
+      : section === "permissionGroups" ? permissionGroups
+        : section === "domains" ? domains
+          : section === "mailboxes" ? mailboxes
+            : section === "aliases" ? aliases
+              : section === "settings" ? settings
+                : null
 
   async function refreshAdminPage() {
     if (refreshing) return
@@ -116,6 +132,8 @@ export function AdminPage() {
       <main className="mx-auto w-full max-w-[1180px] px-3 pb-10 pt-3 sm:px-4 sm:pt-4">
         <AdminPageHeader section={section} refreshing={refreshing} onRefresh={refreshAdminPage} />
 
+        {sectionQuery?.isError && <QueryFailure error={sectionQuery.error} onRetry={() => { void sectionQuery.refetch() }} />}
+
         {section === "overview" && canOverview && (
           <div className="mb-4 grid gap-3 sm:grid-cols-2 xl:grid-cols-4">
             <Stat icon={<Users />} label="账号" value={overview.data?.users || 0} />
@@ -133,7 +151,7 @@ export function AdminPage() {
         {section === "aliases" && <AliasesSection aliases={aliasItems} domains={domainItems} />}
         {section === "messages" && <AdminMessagesSection mailboxes={mailboxItems} systemAdmin={user?.role === "admin"} />}
         {section === "sendAudit" && <AdminSendAuditSection mailboxes={mailboxItems} />}
-        {section === "settings" && <SystemSettingsSection settings={settings.data} domains={domainItems} initialTab={params.get("settingsTab")} />}
+        {section === "settings" && <SystemSettingsSection settings={settings.data} domains={domainItems} mailboxes={mailboxItems} initialTab={params.get("settingsTab")} />}
       </main>
     </ScrollArea>
   )
@@ -245,14 +263,16 @@ function UsersSection({ users, permissionGroups }: { users: AdminUser[]; permiss
   const [pendingConfirm, setPendingConfirm] = React.useState<PendingConfirm | null>(null)
   const canCreate = hasPermission(user, "admin.users.create")
   const canDelete = hasPermission(user, "admin.users.delete")
-  const filteredUsers = users.filter((user) => {
-    const keyword = query.trim().toLowerCase()
-    const loginName = accountLoginName(user)
-    const matchesKeyword = !keyword || [loginName, user.email, user.displayName, ...(user.mailboxes || [])].some((value) => value.toLowerCase().includes(keyword))
-    const matchesRole = roleFilter === "all" || user.role === roleFilter
-    const matchesStatus = statusFilter === "all" || (statusFilter === "active" ? !user.disabled : user.disabled)
-    return matchesKeyword && matchesRole && matchesStatus
-  })
+  const filteredUsers = users
+    .filter((user) => {
+      const keyword = query.trim().toLowerCase()
+      const primaryEmail = accountPrimaryEmail(user)
+      const matchesKeyword = !keyword || [primaryEmail, user.email, user.displayName, ...(user.mailboxes || [])].some((value) => value.toLowerCase().includes(keyword))
+      const matchesRole = roleFilter === "all" || user.role === roleFilter
+      const matchesStatus = statusFilter === "all" || (statusFilter === "active" ? !user.disabled : user.disabled)
+      return matchesKeyword && matchesRole && matchesStatus
+    })
+    .sort(compareAdminUsers)
   const remove = useMutation({ mutationFn: api.deleteUser, onSuccess: () => { setPendingConfirm(null); invalidateAdmin(qc); toast({ title: "账号已删除" }) }, onError: (e) => toast({ title: "删除失败", description: e.message }) })
   return (
     <Card>
@@ -291,9 +311,9 @@ function UsersSection({ users, permissionGroups }: { users: AdminUser[]; permiss
               <div className="flex items-start justify-between gap-3">
                 <div className="min-w-0">
                   <div className="truncate font-medium">{user.displayName}</div>
-                  <div className="truncate text-xs text-muted-foreground">{accountLoginName(user)}</div>
+                  <div className="truncate text-xs text-muted-foreground">{accountPrimaryEmail(user)}</div>
                 </div>
-                <UserActions user={user} permissionGroups={permissionGroups} onDelete={canDelete ? () => setPendingConfirm({ title: "删除账号？", description: `将删除 ${accountLoginName(user)} 及其关联数据。`, confirmText: "删除账号", onConfirm: () => remove.mutate(user.id) }) : undefined} />
+                <UserActions user={user} permissionGroups={permissionGroups} onDelete={canDelete ? () => setPendingConfirm({ title: "删除账号？", description: `将删除 ${accountPrimaryEmail(user)} 及其关联数据。`, confirmText: "删除账号", onConfirm: () => remove.mutate(user.id) }) : undefined} />
               </div>
               <div className="mt-3 flex flex-wrap gap-2">
                 <RoleBadge user={user} />
@@ -307,20 +327,20 @@ function UsersSection({ users, permissionGroups }: { users: AdminUser[]; permiss
         </div>
         <div className="hidden md:block">
           <Table>
-            <TableHeader><TableRow><TableHead>账号</TableHead><TableHead>身份</TableHead><TableHead>权限配额</TableHead><TableHead className="w-[22rem]">邮箱</TableHead><TableHead>状态</TableHead><TableHead>创建</TableHead><TableHead className="w-16"></TableHead></TableRow></TableHeader>
+            <TableHeader><TableRow><TableHead>账号</TableHead><TableHead>身份</TableHead><TableHead>权限配置</TableHead><TableHead className="w-[22rem]">邮箱</TableHead><TableHead>状态</TableHead><TableHead>创建</TableHead><TableHead className="w-16"></TableHead></TableRow></TableHeader>
             <TableBody>
               {filteredUsers.map((user) => (
                 <TableRow key={user.id}>
                   <TableCell>
                     <div className="font-medium">{user.displayName}</div>
-                    <div className="text-xs text-muted-foreground">{accountLoginName(user)}</div>
+                    <div className="text-xs text-muted-foreground">{accountPrimaryEmail(user)}</div>
                   </TableCell>
                   <TableCell><RoleBadge user={user} /></TableCell>
                   <TableCell><UserPermissionGroupsCell user={user} /></TableCell>
                   <TableCell className="w-[22rem] max-w-[22rem]"><UserMailboxCell user={user} /></TableCell>
                   <TableCell><Badge variant={user.disabled ? "secondary" : "default"}>{user.disabled ? "停用" : "正常"}</Badge></TableCell>
                   <TableCell className="text-muted-foreground">{new Date(user.createdAt).toLocaleDateString()}</TableCell>
-                  <TableCell><UserActions user={user} permissionGroups={permissionGroups} onDelete={canDelete ? () => setPendingConfirm({ title: "删除账号？", description: `将删除 ${accountLoginName(user)} 及其关联数据。`, confirmText: "删除账号", onConfirm: () => remove.mutate(user.id) }) : undefined} /></TableCell>
+                  <TableCell><UserActions user={user} permissionGroups={permissionGroups} onDelete={canDelete ? () => setPendingConfirm({ title: "删除账号？", description: `将删除 ${accountPrimaryEmail(user)} 及其关联数据。`, confirmText: "删除账号", onConfirm: () => remove.mutate(user.id) }) : undefined} /></TableCell>
                 </TableRow>
               ))}
             </TableBody>
@@ -349,7 +369,7 @@ function PermissionGroupsSection({ groups, catalog }: { groups: PermissionGroup[
     onSuccess: () => {
       setPendingConfirm(null)
       invalidateAdmin(qc)
-      toast({ title: "权限配额已删除" })
+      toast({ title: "权限配置已删除" })
     },
     onError: (e) => toast({ title: "删除失败", description: e.message }),
   })
@@ -358,20 +378,20 @@ function PermissionGroupsSection({ groups, catalog }: { groups: PermissionGroup[
     if (!keyword) return true
     return [group.name, group.description, ...group.permissions].some((value) => value.toLowerCase().includes(keyword))
   })
-  const isEditable = (group: PermissionGroup) => group.id !== "pg_super_admin"
+  const isEditable = (group: PermissionGroup) => !group.system
   const isDeletable = (group: PermissionGroup) => !group.system && group.userCount === 0
   return (
     <Card>
       <CardHeader>
         <div className="flex flex-col gap-3 md:flex-row md:items-center md:justify-between">
-          <CardTitle>权限配额</CardTitle>
+          <CardTitle>权限配置</CardTitle>
           {canCreate && <PermissionGroupDialog catalog={catalog} />}
         </div>
       </CardHeader>
       <CardContent className="space-y-4">
         <div className="relative">
           <Search className="absolute left-3 top-2.5 h-4 w-4 text-muted-foreground" />
-          <Input value={query} onChange={(event) => setQuery(event.target.value)} placeholder="搜索权限配额、说明或权限键" className="pl-9" />
+          <Input value={query} onChange={(event) => setQuery(event.target.value)} placeholder="搜索权限配置、说明或权限键" className="pl-9" />
         </div>
         <div className="grid gap-3 lg:grid-cols-2">
           {filtered.map((group) => (
@@ -387,16 +407,16 @@ function PermissionGroupsSection({ groups, catalog }: { groups: PermissionGroup[
                   <div className="mt-1 line-clamp-2 text-sm text-muted-foreground">{group.description || "未填写说明"}</div>
                 </div>
                 {(canUpdate || canDelete) && <DropdownMenu>
-                  <DropdownMenuTrigger asChild><Button variant="ghost" size="icon"><MoreHorizontal className="h-4 w-4" /></Button></DropdownMenuTrigger>
+                  <DropdownMenuTrigger asChild><Button variant="ghost" size="icon" aria-label={`管理权限配置 ${group.name}`} title="更多操作"><MoreHorizontal className="h-4 w-4" /></Button></DropdownMenuTrigger>
                   <DropdownMenuContent align="end">
-                    <DropdownMenuItem disabled={!isEditable(group) || !canUpdate} onSelect={() => setEditing(group)}>编辑权限配额</DropdownMenuItem>
+                    <DropdownMenuItem disabled={!isEditable(group) || !canUpdate} onSelect={() => setEditing(group)}>编辑权限配置</DropdownMenuItem>
                     <DropdownMenuSeparator />
                     <DropdownMenuItem
                       className="text-destructive"
                       disabled={!isDeletable(group) || !canDelete}
-                      onSelect={() => setPendingConfirm({ title: "删除权限配额？", description: `${group.name} 删除后不能再分配给账号。`, confirmText: "删除权限配额", onConfirm: () => remove.mutate(group.id) })}
+                      onSelect={() => setPendingConfirm({ title: "删除权限配置？", description: `${group.name} 删除后不能再分配给账号。`, confirmText: "删除权限配置", onConfirm: () => remove.mutate(group.id) })}
                     >
-                      删除权限配额
+                      删除权限配置
                     </DropdownMenuItem>
                   </DropdownMenuContent>
                 </DropdownMenu>}
@@ -406,7 +426,7 @@ function PermissionGroupsSection({ groups, catalog }: { groups: PermissionGroup[
             </div>
           ))}
         </div>
-        {filtered.length === 0 && <Empty text="暂无匹配的权限配额" />}
+        {filtered.length === 0 && <Empty text="暂无匹配的权限配置" />}
       </CardContent>
       {editing && <PermissionGroupDialog group={editing} catalog={catalog} open={!!editing} onOpenChange={(open) => { if (!open) setEditing(null) }} />}
       <ConfirmDialog open={!!pendingConfirm} title={pendingConfirm?.title || ""} description={pendingConfirm?.description} confirmText={pendingConfirm?.confirmText || "删除"} destructive pending={remove.isPending} onOpenChange={(open) => { if (!open) setPendingConfirm(null) }} onConfirm={() => pendingConfirm?.onConfirm()} />
@@ -443,20 +463,20 @@ function PermissionGroupDialog({ group, catalog, open, onOpenChange }: { group?:
     onSuccess: () => {
       invalidateAdmin(qc)
       setDialogOpen(false)
-      toast({ title: group ? "权限配额已更新" : "权限配额已创建" })
+      toast({ title: group ? "权限配置已更新" : "权限配置已创建" })
     },
     onError: (e) => toast({ title: group ? "更新失败" : "创建失败", description: e.message }),
   })
   const trigger = group ? null : (
     <DialogTrigger asChild>
-      <Button size="sm"><Plus className="h-4 w-4" />权限配额</Button>
+      <Button size="sm"><Plus className="h-4 w-4" />权限配置</Button>
     </DialogTrigger>
   )
   return (
     <Dialog open={dialogOpen} onOpenChange={setDialogOpen}>
       {trigger}
       <DialogContent className="max-h-[86vh] overflow-y-auto sm:max-w-3xl">
-        <DialogHeader><DialogTitle>{group ? "编辑权限配额" : "创建权限配额"}</DialogTitle></DialogHeader>
+        <DialogHeader><DialogTitle>{group ? "编辑权限配置" : "创建权限配置"}</DialogTitle></DialogHeader>
         <form className="space-y-4" onSubmit={(event) => { event.preventDefault(); mutation.mutate(new FormData(event.currentTarget)) }}>
           <div className="grid gap-4 md:grid-cols-2">
             <Field name="name" label="名称" defaultValue={group?.name || ""} placeholder="例如：客服主管" />
@@ -893,7 +913,8 @@ function AdminMessagesSection({ mailboxes, systemAdmin }: { mailboxes: MailboxTy
           </Table>
         </div>
         {messages.isLoading && <Empty text="加载中..." />}
-        {!messages.isLoading && items.length === 0 && <Empty text="暂无邮件" />}
+        {messages.isError && <QueryFailure error={messages.error} onRetry={() => { void messages.refetch() }} compact />}
+        {!messages.isLoading && !messages.isError && items.length === 0 && <Empty text="暂无邮件" />}
         {!messages.isLoading && messages.hasNextPage && (
           <div className="flex justify-center">
             <Button variant="outline" size="sm" disabled={messages.isFetchingNextPage} onClick={() => messages.fetchNextPage()}>
@@ -1006,7 +1027,8 @@ function AdminSendAuditSection({ mailboxes }: { mailboxes: MailboxType[] }) {
           </Table>
         </div>
         {audit.isLoading && <Empty text="加载中..." />}
-        {!audit.isLoading && items.length === 0 && <Empty text="暂无发送记录" />}
+        {audit.isError && <QueryFailure error={audit.error} onRetry={() => { void audit.refetch() }} compact />}
+        {!audit.isLoading && !audit.isError && items.length === 0 && <Empty text="暂无发送记录" />}
         {!audit.isLoading && audit.hasNextPage && (
           <div className="flex justify-center">
             <Button variant="outline" size="sm" disabled={audit.isFetchingNextPage} onClick={() => audit.fetchNextPage()}>
@@ -1019,7 +1041,7 @@ function AdminSendAuditSection({ mailboxes }: { mailboxes: MailboxType[] }) {
   )
 }
 
-function SystemSettingsSection({ settings, domains, initialTab }: { settings?: SystemSettings; domains: Domain[]; initialTab?: string | null }) {
+function SystemSettingsSection({ settings, domains, mailboxes, initialTab }: { settings?: SystemSettings; domains: Domain[]; mailboxes: MailboxType[]; initialTab?: string | null }) {
   const me = useMe()
   const user = me.data?.user
   const qc = useQueryClient()
@@ -1032,7 +1054,7 @@ function SystemSettingsSection({ settings, domains, initialTab }: { settings?: S
   const canResetTemplates = hasPermission(user, "admin.templates.reset")
   const templates = useQuery({ queryKey: ["admin", "mail-templates"], queryFn: api.mailTemplates, enabled: canViewTemplates })
   const requestedTab = initialTab as SettingsTab | undefined
-  const [settingsTab, setSettingsTab] = React.useState<SettingsTab>(() => requestedTab && ["base", "smtp", "storage", "mail", "externalImap", "templates", "security", "about"].includes(requestedTab) ? requestedTab : "base")
+  const [settingsTab, setSettingsTab] = React.useState<SettingsTab>(() => requestedTab && ["base", "smtp", "storage", "mail", "notifications", "externalImap", "templates", "security", "about"].includes(requestedTab) ? requestedTab : "base")
   const maildirHealth = useQuery({ queryKey: ["admin", "maildir-sync", "health"], queryFn: api.maildirSyncHealth, enabled: canSettingsView && settingsTab === "storage" })
   const [smtpRequireTls, setSmtpRequireTls] = React.useState(false)
   const [allowInsecureHttp, setAllowInsecureHttp] = React.useState(true)
@@ -1045,6 +1067,13 @@ function SystemSettingsSection({ settings, domains, initialTab }: { settings?: S
   const [userMailboxDomainIds, setUserMailboxDomainIds] = React.useState<string[]>([])
   const [externalImapEnabled, setExternalImapEnabled] = React.useState(false)
   const [externalImapAllowPrivateHosts, setExternalImapAllowPrivateHosts] = React.useState(false)
+  const [telegramMailEnabled, setTelegramMailEnabled] = React.useState(false)
+  const [telegramBotToken, setTelegramBotToken] = React.useState("")
+  const [telegramPrivateChatId, setTelegramPrivateChatId] = React.useState("")
+  const [telegramBodyMode, setTelegramBodyMode] = React.useState<"summary" | "full">("summary")
+  const [telegramMailboxIds, setTelegramMailboxIds] = React.useState<string[]>([])
+  const [telegramIncludeUnregistered, setTelegramIncludeUnregistered] = React.useState(false)
+  const [telegramPairing, setTelegramPairing] = React.useState<TelegramPairing | null>(null)
   React.useEffect(() => {
     if (!settings) return
     setSmtpRequireTls(settings.smtpRequireTls)
@@ -1058,7 +1087,36 @@ function SystemSettingsSection({ settings, domains, initialTab }: { settings?: S
     setUserMailboxDomainIds(settings.userMailboxDomainIds || [])
     setExternalImapEnabled(settings.externalImapEnabled)
     setExternalImapAllowPrivateHosts(settings.externalImapAllowPrivateHosts)
+    setTelegramMailEnabled(settings.telegramMailEnabled)
+    setTelegramBotToken("")
+    setTelegramPrivateChatId(settings.telegramPrivateChatId || "")
+    setTelegramBodyMode(settings.telegramBodyMode === "full" ? "full" : "summary")
+    setTelegramMailboxIds(settings.telegramMailboxIds || [])
+    setTelegramIncludeUnregistered(settings.telegramIncludeUnregistered)
+    setTelegramPairing(null)
   }, [settings])
+  const createTelegramPairing = useMutation({
+    mutationFn: () => api.createTelegramPairing(telegramBotToken),
+    onSuccess: (pairing) => {
+      setTelegramPairing(pairing)
+      toast({ title: "Telegram 绑定码已生成" })
+    },
+    onError: (error) => toast({ title: "生成失败", description: error.message }),
+  })
+  const discoverTelegram = useMutation({
+    mutationFn: () => api.discoverTelegramChat(telegramBotToken, telegramPairing?.code || ""),
+    onSuccess: (chat) => {
+      setTelegramPrivateChatId(chat.chatId)
+      setTelegramPairing(null)
+      toast({ title: "已获取 Telegram 私聊", description: chat.displayName || chat.chatId })
+    },
+    onError: (error) => toast({ title: "获取失败", description: error.message }),
+  })
+  const testTelegram = useMutation({
+    mutationFn: () => api.testTelegram(telegramBotToken, telegramPrivateChatId),
+    onSuccess: () => toast({ title: "Telegram 测试通知已发送" }),
+    onError: (error) => toast({ title: "发送失败", description: error.message }),
+  })
   const save = useMutation({
     mutationFn: (form: FormData) => api.updateSystemSettings({
       publicHostname: fieldValue(form, "publicHostname", settings?.publicHostname || ""),
@@ -1091,6 +1149,12 @@ function SystemSettingsSection({ settings, domains, initialTab }: { settings?: S
       externalImapGmailClientSecret: fieldValue(form, "externalImapGmailClientSecret", ""),
       externalImapOutlookClientId: fieldValue(form, "externalImapOutlookClientId", settings?.externalImapOutlookClientId || ""),
       externalImapOutlookClientSecret: fieldValue(form, "externalImapOutlookClientSecret", ""),
+      telegramMailEnabled,
+      telegramBotToken,
+      telegramPrivateChatId,
+      telegramBodyMode,
+      telegramMailboxIds,
+      telegramIncludeUnregistered,
     }),
     onSuccess: () => {
       qc.invalidateQueries({ queryKey: ["admin", "settings"] })
@@ -1132,6 +1196,12 @@ function SystemSettingsSection({ settings, domains, initialTab }: { settings?: S
     settings.externalImapGmailClientSecretSet,
     settings.externalImapOutlookClientId,
     settings.externalImapOutlookClientSecretSet,
+    settings.telegramMailEnabled,
+    settings.telegramBotTokenSet,
+    settings.telegramPrivateChatId,
+    settings.telegramBodyMode,
+    (settings.telegramMailboxIds || []).join(","),
+    settings.telegramIncludeUnregistered,
   ].join("|") : "loading"
   const tabs: { key: typeof settingsTab; label: string }[] = [
     ...(canSettingsView ? [
@@ -1139,6 +1209,7 @@ function SystemSettingsSection({ settings, domains, initialTab }: { settings?: S
       { key: "smtp" as const, label: "SMTP" },
       { key: "storage" as const, label: "存储" },
       { key: "mail" as const, label: "邮件" },
+      { key: "notifications" as const, label: "通知" },
       { key: "externalImap" as const, label: "外部 IMAP" },
     ] : []),
     ...(canViewTemplates ? [{ key: "templates" as const, label: "模板" }] : []),
@@ -1248,6 +1319,85 @@ function SystemSettingsSection({ settings, domains, initialTab }: { settings?: S
         </CardContent>
       </Card>}
 
+      {settingsTab === "notifications" && <Card>
+        <CardHeader><CardTitle>Telegram 邮件通知</CardTitle></CardHeader>
+        <CardContent className="space-y-5">
+          <SwitchRow label="私聊新邮件通知" checked={telegramMailEnabled} onCheckedChange={setTelegramMailEnabled} />
+          {telegramMailEnabled && (
+            <div className="space-y-5 border-t pt-5">
+              <div className="grid gap-4 md:grid-cols-2">
+                <div className="space-y-2">
+                  <Label>Bot Token</Label>
+                  <Input type="password" value={telegramBotToken} onChange={(event) => setTelegramBotToken(event.target.value)} placeholder={settings?.telegramBotTokenSet ? "已保存，留空不变" : "123456789:..."} />
+                </div>
+                <div className="space-y-2">
+                  <Label>私聊 Chat ID</Label>
+                  <div className="flex gap-2">
+                    <Input inputMode="numeric" value={telegramPrivateChatId} onChange={(event) => setTelegramPrivateChatId(event.target.value)} placeholder="123456789" />
+                    <Button type="button" variant="outline" className="shrink-0" disabled={createTelegramPairing.isPending} onClick={() => createTelegramPairing.mutate()}>
+                      <ShieldCheck className="mr-2 h-4 w-4" />{createTelegramPairing.isPending ? "生成中" : "安全绑定"}
+                    </Button>
+                  </div>
+                  {telegramPairing && (
+                    <div className="space-y-3 border-l-2 border-primary/50 py-1 pl-3">
+                      <div className="flex items-center gap-2">
+                        <code className="min-w-0 flex-1 font-mono text-sm font-semibold">{telegramPairing.code}</code>
+                        <Button type="button" variant="ghost" size="icon" aria-label="复制绑定码" title="复制绑定码" onClick={() => navigator.clipboard.writeText(telegramPairing.code)}>
+                          <Copy className="h-4 w-4" />
+                        </Button>
+                      </div>
+                      <div className="flex flex-wrap gap-2">
+                        <Button asChild type="button" variant="outline" size="sm">
+                          <a href={telegramPairing.deepLink} target="_blank" rel="noreferrer"><ExternalLink className="mr-2 h-4 w-4" />打开机器人</a>
+                        </Button>
+                        <Button type="button" size="sm" disabled={discoverTelegram.isPending} onClick={() => discoverTelegram.mutate()}>
+                          <CheckCircle2 className="mr-2 h-4 w-4" />{discoverTelegram.isPending ? "绑定中" : "完成绑定"}
+                        </Button>
+                      </div>
+                    </div>
+                  )}
+                </div>
+              </div>
+              <div className="space-y-3 border-t pt-5">
+                <Label>通知邮箱</Label>
+                <div className="grid gap-2 md:grid-cols-2">
+                  {mailboxes.filter((mailbox) => mailbox.status === "active").map((mailbox) => (
+                    <label key={mailbox.id} className="flex min-h-11 items-center gap-3 rounded-md border px-3 py-2">
+                      <Checkbox
+                        checked={telegramMailboxIds.includes(mailbox.id)}
+                        onCheckedChange={(checked) => setTelegramMailboxIds((items) => checked === true ? Array.from(new Set([...items, mailbox.id])) : items.filter((id) => id !== mailbox.id))}
+                      />
+                      <span className="min-w-0 truncate text-sm font-medium">{mailbox.address}</span>
+                    </label>
+                  ))}
+                  <label className="flex min-h-11 items-center gap-3 rounded-md border px-3 py-2">
+                    <Checkbox checked={telegramIncludeUnregistered} onCheckedChange={(checked) => setTelegramIncludeUnregistered(checked === true)} />
+                    <span className="text-sm font-medium">未知收件</span>
+                  </label>
+                </div>
+              </div>
+              <div className="grid gap-4 md:grid-cols-2">
+                <div className="space-y-2">
+                  <Label>邮件正文</Label>
+                  <Select value={telegramBodyMode} onValueChange={(value) => setTelegramBodyMode(value === "full" ? "full" : "summary")}>
+                    <SelectTrigger><SelectValue /></SelectTrigger>
+                    <SelectContent>
+                      <SelectItem value="summary">正文摘要</SelectItem>
+                      <SelectItem value="full">尽量显示完整正文</SelectItem>
+                    </SelectContent>
+                  </Select>
+                </div>
+                <div className="flex items-end">
+                  <Button type="button" variant="outline" disabled={testTelegram.isPending || !telegramPrivateChatId} onClick={() => testTelegram.mutate()}>
+                    <Mail className="mr-2 h-4 w-4" />{testTelegram.isPending ? "发送中" : "测试通知"}
+                  </Button>
+                </div>
+              </div>
+            </div>
+          )}
+        </CardContent>
+      </Card>}
+
       {settingsTab === "externalImap" && <Card>
         <CardHeader>
           <CardTitle>外部 IMAP 接入</CardTitle>
@@ -1291,7 +1441,8 @@ function SystemSettingsSection({ settings, domains, initialTab }: { settings?: S
         </CardContent>
       </Card>}
 
-      {settingsTab === "templates" && canViewTemplates && <MailTemplatesPanel templates={templates.data?.items || []} loading={templates.isLoading} canUpdate={canUpdateTemplates} canReset={canResetTemplates} />}
+      {settingsTab === "templates" && canViewTemplates && templates.isError && <QueryFailure error={templates.error} onRetry={() => { void templates.refetch() }} />}
+      {settingsTab === "templates" && canViewTemplates && !templates.isError && <MailTemplatesPanel templates={templates.data?.items || []} loading={templates.isLoading} canUpdate={canUpdateTemplates} canReset={canResetTemplates} />}
 
       {settingsTab === "security" && <Card>
         <CardHeader><CardTitle>安全设置</CardTitle></CardHeader>
@@ -1670,12 +1821,24 @@ function Stat({ icon, label, value }: { icon: React.ReactNode; label: string; va
 }
 function InfoBox({ label, value }: { label: string; value: React.ReactNode }) { return <div className="rounded-lg border p-4"><div className="text-xl font-semibold tracking-tight sm:text-2xl">{value}</div><div className="text-xs text-muted-foreground">{label}</div></div> }
 function Empty({ text }: { text: string }) { return <div className="rounded-lg border border-dashed p-8 text-center text-sm text-muted-foreground">{text}</div> }
+
+function QueryFailure({ error, onRetry, compact = false }: { error: unknown; onRetry: () => void; compact?: boolean }) {
+  return (
+    <div className={cn("mb-4 flex flex-col gap-3 rounded-lg border border-destructive/40 bg-destructive/5 p-4 sm:flex-row sm:items-center sm:justify-between", compact && "mb-0")} role="alert">
+      <div className="min-w-0">
+        <div className="text-sm font-semibold text-destructive">数据读取失败</div>
+        <div className="mt-1 break-words text-sm text-muted-foreground">{queryErrorMessage(error)}</div>
+      </div>
+      <Button type="button" variant="outline" size="sm" className="shrink-0" onClick={onRetry}><RefreshCcw className="h-4 w-4" />重试</Button>
+    </div>
+  )
+}
 function DomainBadgeRow({ domain }: { domain: Domain }) { return <div className="flex items-center justify-between rounded-lg border p-3"><span className="font-medium">{domain.name}</span><Badge variant={domain.dnsStatus === "ok" ? "default" : "secondary"}>{domain.dnsStatus === "ok" ? "正常" : domain.dnsStatus}</Badge></div> }
 function invalidateAdmin(qc: ReturnType<typeof useQueryClient>) { qc.invalidateQueries({ queryKey: ["admin"] }); qc.invalidateQueries({ queryKey: ["mailboxes"] }); qc.invalidateQueries({ queryKey: ["me"] }) }
 
 function UserMailboxCell({ user }: { user: AdminUser }) {
   const { toast } = useToast()
-  const loginAddress = accountLoginName(user)
+  const loginAddress = accountPrimaryEmail(user)
   const mailboxes = user.mailboxes || []
   const [mailboxQuery, setMailboxQuery] = React.useState("")
   const normalizedQuery = mailboxQuery.trim().toLowerCase()
@@ -1776,7 +1939,7 @@ function PermissionGroupPicker({ groups, value, onChange }: { groups: Permission
   }
   return (
     <div className="space-y-2">
-      <Label>权限配额</Label>
+      <Label>自定义权限配置</Label>
       <div className="grid gap-2 md:grid-cols-2">
         {groups.map((group) => {
           const checked = value.includes(group.id)
@@ -1791,7 +1954,7 @@ function PermissionGroupPicker({ groups, value, onChange }: { groups: Permission
           )
         })}
       </div>
-      {groups.length === 0 && <Empty text="暂无可分配权限配额" />}
+      {groups.length === 0 && <Empty text="暂无可分配自定义权限配置" />}
     </div>
   )
 }
@@ -1815,13 +1978,14 @@ function UserActions({ user, permissionGroups, onDelete }: { user: AdminUser; pe
   const canUpdate = hasPermission(currentUser, "admin.users.update")
   const canResetPassword = hasPermission(currentUser, "admin.users.reset_password")
   const update = useMutation({
-    mutationFn: (payload: { displayName: string; role: "admin" | "user"; disabled: boolean; permissionGroupIds?: string[] }) => api.updateUser(user.id, payload),
+    mutationFn: (payload: { email: string; displayName: string; role: "admin" | "user"; disabled: boolean; permissionGroupIds?: string[] }) => api.updateUser(user.id, payload),
     onSuccess: () => { invalidateAdmin(qc); toast({ title: "账号已更新" }) },
     onError: (e) => toast({ title: "更新失败", description: e.message }),
   })
-  function quickPatch(patch: Partial<{ role: "admin" | "user"; disabled: boolean }>) {
-    const role = patch.role || user.role
+  function quickPatch(patch: Partial<{ disabled: boolean }>) {
+    const role = user.role
     update.mutate({
+      email: accountPrimaryEmail(user),
       displayName: user.displayName,
       role,
       disabled: patch.disabled ?? user.disabled,
@@ -1829,27 +1993,24 @@ function UserActions({ user, permissionGroups, onDelete }: { user: AdminUser; pe
     })
   }
   if (!canUpdate && !canResetPassword && !onDelete) return null
-  return <><DropdownMenu><DropdownMenuTrigger asChild><Button variant="ghost" size="icon"><MoreHorizontal className="h-4 w-4" /></Button></DropdownMenuTrigger><DropdownMenuContent align="end">{canUpdate && <DropdownMenuItem onSelect={() => setEditOpen(true)}>编辑账号</DropdownMenuItem>}{canResetPassword && <DropdownMenuItem onSelect={() => setPasswordOpen(true)}>重置密码</DropdownMenuItem>}{!user.protected && canUpdate && <><DropdownMenuSeparator /><DropdownMenuItem onSelect={() => quickPatch({ disabled: !user.disabled })}>{user.disabled ? "启用账号" : "停用账号"}</DropdownMenuItem><DropdownMenuItem onSelect={() => quickPatch({ role: user.role === "admin" ? "user" : "admin" })}>{user.role === "admin" ? "设为普通用户" : "设为管理员"}</DropdownMenuItem></>}{!user.protected && onDelete && <><DropdownMenuSeparator /><DropdownMenuItem className="text-destructive" onSelect={onDelete}>删除账号</DropdownMenuItem></>}</DropdownMenuContent></DropdownMenu>{canUpdate && <EditUserDialog user={user} permissionGroups={permissionGroups} open={editOpen} onOpenChange={setEditOpen} />}{canResetPassword && <ResetPasswordDialog user={user} open={passwordOpen} onOpenChange={setPasswordOpen} />}</>
+  return <><DropdownMenu><DropdownMenuTrigger asChild><Button variant="ghost" size="icon" aria-label={`管理账号 ${accountPrimaryEmail(user)}`} title="更多操作"><MoreHorizontal className="h-4 w-4" /></Button></DropdownMenuTrigger><DropdownMenuContent align="end">{canUpdate && <DropdownMenuItem onSelect={() => setEditOpen(true)}>编辑账号</DropdownMenuItem>}{canResetPassword && <DropdownMenuItem onSelect={() => setPasswordOpen(true)}>重置密码</DropdownMenuItem>}{!user.protected && user.role !== "admin" && canUpdate && <><DropdownMenuSeparator /><DropdownMenuItem onSelect={() => quickPatch({ disabled: !user.disabled })}>{user.disabled ? "启用账号" : "停用账号"}</DropdownMenuItem></>}{!user.protected && user.role !== "admin" && onDelete && <><DropdownMenuSeparator /><DropdownMenuItem className="text-destructive" onSelect={onDelete}>删除账号</DropdownMenuItem></>}</DropdownMenuContent></DropdownMenu>{canUpdate && <EditUserDialog user={user} permissionGroups={permissionGroups} open={editOpen} onOpenChange={setEditOpen} />}{canResetPassword && <ResetPasswordDialog user={user} open={passwordOpen} onOpenChange={setPasswordOpen} />}</>
 }
 
-function CreateUserDialog({ permissionGroups }: { permissionGroups: PermissionGroup[] }) {
+function CreateUserDialog(_props: { permissionGroups: PermissionGroup[] }) {
   const qc = useQueryClient()
   const { toast } = useToast()
   const [open, setOpen] = React.useState(false)
-  const [role, setRole] = React.useState<"admin" | "user">("user")
   const [status, setStatus] = React.useState("active")
-  const [permissionGroupIds, setPermissionGroupIds] = React.useState<string[]>([])
   const create = useMutation({
     mutationFn: (form: FormData) => api.createUser({
-      loginName: String(form.get("loginName") || ""),
+      email: String(form.get("email") || ""),
       displayName: String(form.get("displayName") || ""),
       password: String(form.get("password") || ""),
-      role,
+      role: "user",
       disabled: status === "disabled",
-      mailboxLimitOverride: role === "user" ? mailboxLimitFromForm(form) : undefined,
-      permissionGroupIds: role === "user" ? permissionGroupIds : [],
+      mailboxLimitOverride: mailboxLimitFromForm(form),
     }),
-    onSuccess: () => { invalidateAdmin(qc); setOpen(false); setPermissionGroupIds([]); toast({ title: "账号已创建" }) },
+    onSuccess: () => { invalidateAdmin(qc); setOpen(false); toast({ title: "账号已创建" }) },
     onError: (e) => toast({ title: "创建失败", description: e.message }),
   })
   return (
@@ -1858,15 +2019,14 @@ function CreateUserDialog({ permissionGroups }: { permissionGroups: PermissionGr
       <DialogContent>
         <DialogHeader><DialogTitle>创建账号</DialogTitle></DialogHeader>
         <form className="space-y-4" onSubmit={(event) => { event.preventDefault(); create.mutate(new FormData(event.currentTarget)) }}>
-          <Field name="loginName" label="登录名" type="text" autoComplete="off" placeholder="admin" />
+          <Field name="email" label="主登录邮箱" type="email" autoComplete="off" placeholder="user@example.com" />
           <Field name="displayName" label="显示名称" placeholder="账号名称" />
           <Field name="password" label="初始密码" type="password" minLength={6} />
           <div className="grid grid-cols-2 gap-3">
-            <SelectField label="身份" value={role} onValueChange={(value) => setRole(value as "admin" | "user")} items={[["user", "普通用户"], ["admin", "管理员"]]} />
+            <SelectField label="身份" value="user" onValueChange={() => undefined} items={[["user", "普通用户"]]} disabled />
             <SelectField label="状态" value={status} onValueChange={setStatus} items={[["active", "正常"], ["disabled", "停用"]]} />
           </div>
-          {role === "user" && <MailboxLimitField defaultValue={defaultMailboxLimitOverride} />}
-          {role === "user" && <PermissionGroupPicker groups={permissionGroups} value={permissionGroupIds} onChange={setPermissionGroupIds} />}
+          <MailboxLimitField defaultValue={defaultMailboxLimitOverride} />
           <DialogFooter><Button disabled={create.isPending}>{create.isPending ? "创建中..." : "创建"}</Button></DialogFooter>
         </form>
       </DialogContent>
@@ -1877,12 +2037,12 @@ function CreateUserDialog({ permissionGroups }: { permissionGroups: PermissionGr
 function MailboxActions({ mailbox, users, canUpdate, onDelete }: { mailbox: MailboxType; users: AdminUser[]; canUpdate: boolean; onDelete?: () => void }) {
   const [open, setOpen] = React.useState(false)
   if (!canUpdate && !onDelete) return null
-  return <><DropdownMenu><DropdownMenuTrigger asChild><Button variant="ghost" size="icon"><MoreHorizontal className="h-4 w-4" /></Button></DropdownMenuTrigger><DropdownMenuContent align="end">{canUpdate && <DropdownMenuItem onSelect={() => setOpen(true)}>编辑邮箱</DropdownMenuItem>}{canUpdate && onDelete && <DropdownMenuSeparator />}{onDelete && <DropdownMenuItem className="text-destructive" onSelect={onDelete}>删除邮箱</DropdownMenuItem>}</DropdownMenuContent></DropdownMenu>{canUpdate && <EditMailboxDialog mailbox={mailbox} users={users} open={open} onOpenChange={setOpen} />}</>
+  return <><DropdownMenu><DropdownMenuTrigger asChild><Button variant="ghost" size="icon" aria-label={`管理邮箱 ${mailbox.address}`} title="更多操作"><MoreHorizontal className="h-4 w-4" /></Button></DropdownMenuTrigger><DropdownMenuContent align="end">{canUpdate && <DropdownMenuItem onSelect={() => setOpen(true)}>编辑邮箱</DropdownMenuItem>}{canUpdate && onDelete && <DropdownMenuSeparator />}{onDelete && <DropdownMenuItem className="text-destructive" onSelect={onDelete}>删除邮箱</DropdownMenuItem>}</DropdownMenuContent></DropdownMenu>{canUpdate && <EditMailboxDialog mailbox={mailbox} users={users} open={open} onOpenChange={setOpen} />}</>
 }
 
 function AliasActions({ alias, onToggle, onDelete }: { alias: Alias; onToggle?: () => void; onDelete?: () => void }) {
   if (!onToggle && !onDelete) return null
-  return <DropdownMenu><DropdownMenuTrigger asChild><Button variant="ghost" size="icon"><MoreHorizontal className="h-4 w-4" /></Button></DropdownMenuTrigger><DropdownMenuContent align="end">{onToggle && <DropdownMenuItem onSelect={onToggle}>{alias.enabled ? "停用" : "启用"}</DropdownMenuItem>}{onToggle && onDelete && <DropdownMenuSeparator />}{onDelete && <DropdownMenuItem className="text-destructive" onSelect={onDelete}>删除转发</DropdownMenuItem>}</DropdownMenuContent></DropdownMenu>
+  return <DropdownMenu><DropdownMenuTrigger asChild><Button variant="ghost" size="icon" aria-label={`管理转发 ${alias.source}`} title="更多操作"><MoreHorizontal className="h-4 w-4" /></Button></DropdownMenuTrigger><DropdownMenuContent align="end">{onToggle && <DropdownMenuItem onSelect={onToggle}>{alias.enabled ? "停用" : "启用"}</DropdownMenuItem>}{onToggle && onDelete && <DropdownMenuSeparator />}{onDelete && <DropdownMenuItem className="text-destructive" onSelect={onDelete}>删除转发</DropdownMenuItem>}</DropdownMenuContent></DropdownMenu>
 }
 
 function EditUserDialog({ user, permissionGroups, open, onOpenChange }: { user: AdminUser; permissionGroups: PermissionGroup[]; open: boolean; onOpenChange: (open: boolean) => void }) {
@@ -1898,7 +2058,7 @@ function EditUserDialog({ user, permissionGroups, open, onOpenChange }: { user:
   }, [user, open])
   const mut = useMutation({
     mutationFn: (form: FormData) => api.updateUser(user.id, {
-      loginName: String(form.get("loginName") || ""),
+      email: String(form.get("email") || ""),
       displayName: String(form.get("displayName") || ""),
       role,
       disabled: disabled === "disabled",
@@ -1913,11 +2073,11 @@ function EditUserDialog({ user, permissionGroups, open, onOpenChange }: { user:
       <DialogContent>
         <DialogHeader><DialogTitle>编辑账号</DialogTitle></DialogHeader>
         <form className="space-y-4" onSubmit={(e) => { e.preventDefault(); mut.mutate(new FormData(e.currentTarget)) }}>
-          <Field name="loginName" label="登录名" defaultValue={accountLoginName(user)} type="text" autoComplete="off" />
+          <Field name="email" label="主登录邮箱" defaultValue={accountPrimaryEmail(user)} type="email" autoComplete="off" />
           <Field name="displayName" label="显示名称" defaultValue={user.displayName} />
           <div className="grid grid-cols-2 gap-3">
-            <SelectField label="身份" value={role} onValueChange={(value) => setRole(value as "admin" | "user")} items={[["user", "普通用户"], ["admin", "管理员"]]} disabled={user.protected} />
-            <SelectField label="状态" value={disabled} onValueChange={setDisabled} items={[["active", "正常"], ["disabled", "停用"]]} disabled={user.protected} />
+            <SelectField label="身份" value={role} onValueChange={(value) => setRole(value as "admin" | "user")} items={user.role === "admin" ? [["admin", "管理员"]] : [["user", "普通用户"]]} disabled />
+            <SelectField label="状态" value={disabled} onValueChange={setDisabled} items={[["active", "正常"], ["disabled", "停用"]]} disabled={user.protected || user.role === "admin"} />
           </div>
           {role === "user" && !user.protected && <MailboxLimitField defaultValue={effectiveMailboxLimit(user)} />}
           {role === "user" && !user.protected && <PermissionGroupPicker groups={permissionGroups} value={permissionGroupIds} onChange={setPermissionGroupIds} />}
@@ -1930,7 +2090,7 @@ function EditUserDialog({ user, permissionGroups, open, onOpenChange }: { user:
 
 function ResetPasswordDialog({ user, open, onOpenChange }: { user: AdminUser; open: boolean; onOpenChange: (open: boolean) => void }) {
   const { toast } = useToast(); const mut = useMutation({ mutationFn: (form: FormData) => api.resetUserPassword(user.id, String(form.get("password") || "")), onSuccess: () => { onOpenChange(false); toast({ title: "密码已重置" }) }, onError: (e) => toast({ title: "重置失败", description: e.message }) })
-  return <Dialog open={open} onOpenChange={onOpenChange}><DialogContent><DialogHeader><DialogTitle>重置密码</DialogTitle></DialogHeader><form className="space-y-4" onSubmit={(e) => { e.preventDefault(); mut.mutate(new FormData(e.currentTarget)); e.currentTarget.reset() }}><Field name="loginName" label="登录名" value={accountLoginName(user)} readOnly /><Field name="password" label="新密码" type="password" minLength={6} /><DialogFooter><Button disabled={mut.isPending}>{mut.isPending ? "重置中..." : "重置"}</Button></DialogFooter></form></DialogContent></Dialog>
+  return <Dialog open={open} onOpenChange={onOpenChange}><DialogContent><DialogHeader><DialogTitle>重置密码</DialogTitle></DialogHeader><form className="space-y-4" onSubmit={(e) => { e.preventDefault(); mut.mutate(new FormData(e.currentTarget)); e.currentTarget.reset() }}><Field name="email" label="主登录邮箱" value={accountPrimaryEmail(user)} readOnly /><Field name="password" label="新密码" type="password" minLength={6} /><DialogFooter><Button disabled={mut.isPending}>{mut.isPending ? "重置中..." : "重置"}</Button></DialogFooter></form></DialogContent></Dialog>
 }
 
 function EditMailboxDialog({ mailbox, users, open, onOpenChange }: { mailbox: MailboxType; users: AdminUser[]; open: boolean; onOpenChange: (open: boolean) => void }) {
@@ -1947,10 +2107,56 @@ function CreateDomainDialog() {
 }
 
 function CreateMailboxDialog({ domains, users }: { domains: Domain[]; users: AdminUser[] }) {
-  const qc = useQueryClient(); const { toast } = useToast(); const [open, setOpen] = React.useState(false); const [domainId, setDomainId] = React.useState(""); const [role, setRole] = React.useState("user"); const [ownerMode, setOwnerMode] = React.useState("new"); const [userId, setUserId] = React.useState("")
-  React.useEffect(() => { if (!domainId && domains[0]) setDomainId(domains[0].id); if (!userId && users[0]) setUserId(users[0].id) }, [domains, domainId, users, userId])
-  const mut = useMutation({ mutationFn: (form: FormData) => api.createMailbox({ domainId, localPart: String(form.get("localPart")), displayName: String(form.get("displayName")), password: String(form.get("password")), quotaMb: Number(form.get("quotaMb") || 1024), role: role as "admin" | "user", ownerLoginName: String(form.get("ownerLoginName") || ""), userId: ownerMode === "existing" ? userId : "" }), onSuccess: () => { invalidateAdmin(qc); setOpen(false); toast({ title: "邮箱已创建" }) }, onError: (e) => toast({ title: "创建失败", description: e.message }) })
-  return <Dialog open={open} onOpenChange={setOpen}><DialogTrigger asChild><Button><Plus className="h-4 w-4" />邮箱</Button></DialogTrigger><DialogContent><DialogHeader><DialogTitle>创建邮箱</DialogTitle></DialogHeader><form className="space-y-4" onSubmit={(e) => { e.preventDefault(); mut.mutate(new FormData(e.currentTarget)) }}><DomainSelect domains={domains} value={domainId} onChange={setDomainId} /><div className="grid grid-cols-2 gap-3"><Field name="localPart" label="邮箱前缀" placeholder="alice" /><Field name="displayName" label="显示名" placeholder="Alice" /></div><SelectField label="归属方式" value={ownerMode} onValueChange={setOwnerMode} items={[['new','新建/按登录名匹配账号'],['existing','追加到已有账号']]} />{ownerMode === "existing" ? <SelectField label="已有账号" value={userId} onValueChange={setUserId} items={users.filter((u) => !u.disabled).map((u) => [u.id, accountLoginName(u)])} /> : <Field name="ownerLoginName" label="归属登录名" placeholder="留空则使用新邮箱地址" required={false} />}<div className="grid grid-cols-2 gap-3"><Field name="password" label="密码" type="password" placeholder="至少 6 位" /><Field name="quotaMb" label="配额 MB" type="number" defaultValue="1024" /></div><SelectField label="身份" value={role} onValueChange={setRole} items={[['user','普通用户'],['admin','管理员']]} /><DialogFooter><Button disabled={mut.isPending || !domainId}>创建</Button></DialogFooter></form></DialogContent></Dialog>
+  const qc = useQueryClient()
+  const { toast } = useToast()
+  const [open, setOpen] = React.useState(false)
+  const [domainId, setDomainId] = React.useState("")
+  const [ownerMode, setOwnerMode] = React.useState("new")
+  const [userId, setUserId] = React.useState("")
+  React.useEffect(() => {
+    if (!domainId && domains[0]) setDomainId(domains[0].id)
+    if (!userId && users[0]) setUserId(users[0].id)
+  }, [domains, domainId, users, userId])
+  const mut = useMutation({
+    mutationFn: (form: FormData) => api.createMailbox({
+      domainId,
+      localPart: String(form.get("localPart")),
+      displayName: String(form.get("displayName")),
+      password: String(form.get("password")),
+      quotaMb: Number(form.get("quotaMb") || 1024),
+      role: "user",
+      ownerEmail: String(form.get("ownerEmail") || ""),
+      userId: ownerMode === "existing" ? userId : "",
+    }),
+    onSuccess: () => { invalidateAdmin(qc); setOpen(false); toast({ title: "邮箱已创建" }) },
+    onError: (e) => toast({ title: "创建失败", description: e.message }),
+  })
+  return (
+    <Dialog open={open} onOpenChange={setOpen}>
+      <DialogTrigger asChild><Button><Plus className="h-4 w-4" />邮箱</Button></DialogTrigger>
+      <DialogContent>
+        <DialogHeader><DialogTitle>创建邮箱</DialogTitle></DialogHeader>
+        <form className="space-y-4" onSubmit={(e) => { e.preventDefault(); mut.mutate(new FormData(e.currentTarget)) }}>
+          <DomainSelect domains={domains} value={domainId} onChange={setDomainId} />
+          <div className="grid grid-cols-2 gap-3">
+            <Field name="localPart" label="邮箱前缀" placeholder="alice" />
+            <Field name="displayName" label="显示名" placeholder="Alice" />
+          </div>
+          <SelectField label="归属方式" value={ownerMode} onValueChange={setOwnerMode} items={[["new", "新建/按主登录邮箱匹配账号"], ["existing", "追加到已有账号"]]} />
+          {ownerMode === "existing" ? (
+            <SelectField label="已有账号" value={userId} onValueChange={setUserId} items={users.filter((u) => !u.disabled).map((u) => [u.id, accountPrimaryEmail(u)])} />
+          ) : (
+            <Field name="ownerEmail" label="主登录邮箱" placeholder="留空则使用新邮箱地址" required={false} />
+          )}
+          <div className="grid grid-cols-2 gap-3">
+            <Field name="password" label="密码" type="password" placeholder="至少 6 位" />
+            <Field name="quotaMb" label="配额 MB" type="number" defaultValue="1024" />
+          </div>
+          <DialogFooter><Button disabled={mut.isPending || !domainId}>创建</Button></DialogFooter>
+        </form>
+      </DialogContent>
+    </Dialog>
+  )
 }
 
 function CreateAliasDialog({ domains }: { domains: Domain[] }) {
@@ -1965,15 +2171,15 @@ function DNSPanel({ domain, embedded = false }: { domain?: Domain; embedded?: bo
   const user = me.data?.user
   const canCheckDNS = hasPermission(user, "admin.dns.check")
   const { toast } = useToast(); const qc = useQueryClient(); const records = useQuery({ queryKey: ["dns-records", domain?.id], queryFn: () => api.dnsRecords(domain!.id), enabled: !!domain })
-  const check = useMutation({ mutationFn: () => api.checkDns(domain!.id), onSuccess: (res) => { qc.invalidateQueries({ queryKey: ["admin", "domains"] }); toast({ title: res.status === "ok" ? "DNS 检测通过" : "DNS 检测未通过", description: Object.values(res.checks).map((c) => c.message).join("；") }) } })
+  const check = useMutation({ mutationFn: () => api.checkDns(domain!.id), onSuccess: (res) => { qc.invalidateQueries({ queryKey: ["admin", "domains"] }); toast({ title: res.status === "ok" ? "DNS 检测通过" : "DNS 检测未通过", description: Object.values(res.checks).map((c) => c.message).join("；") }) }, onError: (error) => toast({ title: "DNS 检测失败", description: error.message }) })
   if (!domain) return <Card><CardContent className="p-6 text-muted-foreground">请选择域名</CardContent></Card>
   const content = <>
     <p className="mb-3 text-sm text-muted-foreground">以下为需要在域名 DNS 管理中添加的记录：</p>
-    <div className="space-y-3">{records.data?.items.map((r) => <DNSRecordRow key={`${r.type}-${r.name}`} record={r} />)}</div>
+    {records.isError ? <QueryFailure error={records.error} onRetry={() => { void records.refetch() }} compact /> : <div className="space-y-3">{records.data?.items.map((r) => <DNSRecordRow key={`${r.type}-${r.name}`} record={r} />)}</div>}
     {check.data && <>
       <Separator className="my-4" />
       <div className="flex items-center gap-2 text-sm font-medium text-muted-foreground"><CheckCircle2 className="h-4 w-4" />检测结果</div>
-      <div className="mt-2 space-y-2">{Object.entries(check.data.checks).map(([k, v]) => <div key={k} className="flex items-center gap-2 text-sm"><CheckCircle2 className={`h-4 w-4 shrink-0 ${v.ok ? "text-green-600" : "text-destructive"}`} /><span className="font-medium">{k.toUpperCase()}:</span> {v.message}</div>)}</div>
+      <div className="mt-2 space-y-2">{Object.entries(check.data.checks).map(([k, v]) => <DNSCheckRow key={k} name={k} check={v} />)}</div>
     </>}</>
   const checkButton = canCheckDNS ? <Button variant="outline" size="sm" onClick={() => check.mutate()} disabled={check.isPending}><RefreshCcw className="h-4 w-4" />检测</Button> : null
   const header = <div className="flex items-center justify-between"><CardTitle>DNS 记录</CardTitle>{checkButton}</div>
@@ -1981,6 +2187,20 @@ function DNSPanel({ domain, embedded = false }: { domain?: Domain; embedded?: bo
   return <Card><CardHeader>{header}</CardHeader><CardContent>{content}</CardContent></Card>
 }
 
+function DNSCheckRow({ name, check }: { name: string; check: { ok: boolean; message: string; found?: string[] } }) {
+  const visibleRecords = check.found?.filter(Boolean) ?? []
+  return <div className="space-y-1 text-sm">
+    <div className="flex items-start gap-2">
+      <CheckCircle2 className={`mt-0.5 h-4 w-4 shrink-0 ${check.ok ? "text-green-600" : "text-destructive"}`} />
+      <div className="min-w-0"><span className="font-medium">{name.toUpperCase()}:</span> {check.message}</div>
+    </div>
+    {!check.ok && visibleRecords.length > 0 && <div className="ml-6 rounded-md bg-muted/60 px-3 py-2 font-mono text-xs text-muted-foreground">
+      <div className="mb-1 font-sans text-foreground">当前解析</div>
+      <div className="space-y-1">{visibleRecords.map((record, index) => <div key={`${name}-${index}`} className="break-all">{record}</div>)}</div>
+    </div>}
+  </div>
+}
+
 function dnsDescription(record: DNSRecord): string {
   if (record.type === "TXT" && record.name.startsWith("_dmarc")) return "声明域名的 DMARC 策略（如何处理未通过 SPF/DKIM 验证的邮件）。"
   if (record.type === "TXT" && record.value.includes("DKIM1")) return "DKIM 公钥。收件服务器用此密钥验证邮件是否由你发出。"
@@ -1990,18 +2210,32 @@ function dnsDescription(record: DNSRecord): string {
 }
 
 function DNSRecordRow({ record }: { record: DNSRecord }) {
-  const { toast } = useToast(); const text = `${record.type} ${record.name} ${record.value}`
+  const { toast } = useToast()
   const desc = dnsDescription(record)
+  async function copyField(label: string, value: string) {
+    await navigator.clipboard.writeText(value)
+    toast({ title: `${label}已复制` })
+  }
   return <div className="rounded-lg border bg-card p-3">
-    <div className="mb-2 flex items-center justify-between">
+    <div className="mb-2 flex items-center">
       <Badge variant="outline" className="font-mono">{record.type}</Badge>
-      <Button size="sm" variant="ghost" className="h-7 gap-1 text-xs" onClick={() => { navigator.clipboard.writeText(text); toast({ title: "已复制" }) }}><Copy className="h-3.5 w-3.5" />复制</Button>
     </div>
     {desc && <p className="mb-2 text-xs text-muted-foreground">{desc}</p>}
-    <div className="break-all font-mono text-xs text-muted-foreground">
-      <div><span className="text-foreground">Name:</span> {record.name}</div>
-      <div><span className="text-foreground">Value:</span> {record.value}</div>
-      <div><span className="text-foreground">TTL:</span> {record.ttl}s</div>
+    <div className="space-y-1 font-mono text-xs text-muted-foreground">
+      <div className="grid grid-cols-[4.5rem_minmax(0,1fr)_1.75rem] items-start gap-2">
+        <span className="pt-1 text-foreground">主机记录</span>
+        <code className="break-all pt-1 font-mono">{record.name}</code>
+        <Button type="button" size="icon" variant="ghost" className="h-7 w-7" aria-label="复制主机记录" title="复制主机记录" onClick={() => copyField("主机记录", record.name)}><Copy className="h-3.5 w-3.5" /></Button>
+      </div>
+      <div className="grid grid-cols-[4.5rem_minmax(0,1fr)_1.75rem] items-start gap-2">
+        <span className="pt-1 text-foreground">记录值</span>
+        <code className="break-all pt-1 font-mono">{record.value}</code>
+        <Button type="button" size="icon" variant="ghost" className="h-7 w-7" aria-label="复制记录值" title="复制记录值" onClick={() => copyField("记录值", record.value)}><Copy className="h-3.5 w-3.5" /></Button>
+      </div>
+      <div className="grid grid-cols-[4.5rem_minmax(0,1fr)] gap-2">
+        <span className="text-foreground">TTL</span>
+        <code className="font-mono">{record.ttl} 秒</code>
+      </div>
     </div>
   </div>
 }
@@ -2017,19 +2251,25 @@ function fieldNumber(form: FormData, name: string, fallback: number) {
   return Number.isFinite(n) && n > 0 ? n : fallback
 }
 function SwitchRow({ label, checked, onCheckedChange, className = "" }: { label: string; checked: boolean; onCheckedChange: (checked: boolean) => void; className?: string }) {
+  const id = React.useId()
   return (
     <div className={`flex min-h-14 items-center justify-between gap-4 ${className}`}>
-      <Label className="text-base font-medium">{label}</Label>
-      <Switch checked={checked} onCheckedChange={onCheckedChange} />
+      <Label htmlFor={id} className="text-base font-medium">{label}</Label>
+      <Switch id={id} checked={checked} onCheckedChange={onCheckedChange} />
     </div>
   )
 }
-function Field({ label, required = true, ...props }: React.InputHTMLAttributes<HTMLInputElement> & { label: string }) { return <div className="space-y-2"><Label>{label}</Label><Input required={required} {...props} /></div> }
+function Field({ label, required = true, id: suppliedId, ...props }: React.InputHTMLAttributes<HTMLInputElement> & { label: string }) {
+  const generatedId = React.useId()
+  const id = suppliedId || generatedId
+  return <div className="space-y-2"><Label htmlFor={id}>{label}</Label><Input id={id} required={required} {...props} /></div>
+}
 function MailboxLimitField({ defaultValue }: { defaultValue: number }) {
+  const id = React.useId()
   return (
     <div className="space-y-2">
-      <Label>邮箱数量上限</Label>
-      <Input name="mailboxLimitOverride" type="number" min={0} step={1} defaultValue={String(defaultValue)} />
+      <Label htmlFor={id}>邮箱数量上限</Label>
+      <Input id={id} name="mailboxLimitOverride" type="number" min={0} step={1} defaultValue={String(defaultValue)} />
       <div className="text-xs text-muted-foreground">普通用户默认 9 个，填 0 表示不限制。</div>
     </div>
   )
@@ -2041,5 +2281,8 @@ function mailboxLimitFromForm(form: FormData, fallback = defaultMailboxLimitOver
 function effectiveMailboxLimit(user: AdminUser) {
   return user.mailboxLimitOverride ?? user.limits?.maxMailboxCount ?? defaultMailboxLimitOverride
 }
-function SelectField({ label, value, onValueChange, items, disabled = false }: { label: string; value: string; onValueChange: (value: string) => void; items: string[][]; disabled?: boolean }) { return <div className="space-y-2"><Label>{label}</Label><Select value={value} onValueChange={onValueChange} disabled={disabled}><SelectTrigger><SelectValue /></SelectTrigger><SelectContent>{items.map(([value, label]) => <SelectItem key={value} value={value}>{label}</SelectItem>)}</SelectContent></Select></div> }
+function SelectField({ label, value, onValueChange, items, disabled = false }: { label: string; value: string; onValueChange: (value: string) => void; items: string[][]; disabled?: boolean }) {
+  const id = React.useId()
+  return <div className="space-y-2"><Label htmlFor={id}>{label}</Label><Select value={value} onValueChange={onValueChange} disabled={disabled}><SelectTrigger id={id}><SelectValue /></SelectTrigger><SelectContent>{items.map(([value, itemLabel]) => <SelectItem key={value} value={value}>{itemLabel}</SelectItem>)}</SelectContent></Select></div>
+}
 function DomainSelect({ domains, value, onChange }: { domains: Domain[]; value: string; onChange: (value: string) => void }) { return <div className="space-y-2"><Label>域名</Label><Select value={value} onValueChange={onChange}><SelectTrigger><SelectValue placeholder="选择域名" /></SelectTrigger><SelectContent>{domains.map((d) => <SelectItem key={d.id} value={d.id}>{d.name}</SelectItem>)}</SelectContent></Select></div> }

apps/web/src/pages/login.tsx

@@ -1,5 +1,5 @@
 import * as React from "react"
-import { Link, Navigate } from "react-router-dom"
+import { Link, Navigate, useLocation } from "react-router-dom"
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query"
 import { ArrowRight, KeyRound, LockKeyhole } from "lucide-react"
 import { api } from "@/lib/api"
@@ -10,9 +10,12 @@ import { Button } from "@/components/ui/button"
 import { Input } from "@/components/ui/input"
 import { Label } from "@/components/ui/label"
 import { useToast } from "@/hooks/use-toast"
+import { safeReturnPath } from "@/lib/navigation"
+import { AuthError, AuthLoading } from "@/components/auth-states"
 
 export function LoginPage() {
   const me = useMe()
+  const location = useLocation()
   const qc = useQueryClient()
   const { toast } = useToast()
   const publicSettings = useQuery({ queryKey: ["public-settings"], queryFn: api.publicSettings })
@@ -21,7 +24,7 @@ export function LoginPage() {
   const login = useMutation({
     mutationFn: (form: FormData) => challengeToken
       ? api.login({ challengeToken, twoFactorCode: String(form.get("twoFactorCode") || "") })
-      : api.login({ loginName: String(form.get("loginName") || ""), password: String(form.get("password") || ""), turnstileToken }),
+      : api.login({ email: String(form.get("email") || ""), password: String(form.get("password") || ""), turnstileToken }),
     onSuccess: async (data) => {
       if (data.twoFactorRequired && data.challengeToken) {
         setChallengeToken(data.challengeToken)
@@ -33,9 +36,12 @@ export function LoginPage() {
     onError: (e) => toast({ title: "登录失败", description: e.message }),
   })
   const turnstileRequired = !!publicSettings.data?.turnstileEnabled
-  if (me.data?.user) return <Navigate to="/" replace />
+  const returnPath = safeReturnPath((location.state as { from?: unknown } | null)?.from)
+  if (me.data?.user) return <Navigate to={returnPath} replace />
+  if (publicSettings.isLoading) return <AuthLoading />
+  if (publicSettings.isError) return <AuthError message={publicSettings.error.message} onRetry={() => { void publicSettings.refetch() }} />
   return (
-    <div className="flex min-h-screen items-center justify-center bg-muted/20 px-4 py-10">
+    <main 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">NewSzxcn 邮箱</h1>
@@ -49,8 +55,8 @@ export function LoginPage() {
             {!challengeToken ? (
               <>
                 <div className="space-y-2">
-                  <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" />
+                  <Label htmlFor="email" className="text-sm font-medium">邮箱地址</Label>
+                  <Input id="email" name="email" type="email" 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>
@@ -59,8 +65,8 @@ export function LoginPage() {
               </>
             ) : (
               <div className="space-y-2">
-                <Label htmlFor="twoFactorCode" className="text-sm font-medium">双因素验证码</Label>
-                <Input id="twoFactorCode" name="twoFactorCode" inputMode="numeric" autoComplete="one-time-code" minLength={6} maxLength={6} required className="h-11 text-center text-lg tracking-[0.35em]" />
+                <Label htmlFor="twoFactorCode" className="text-sm font-medium">双因素验证码或恢复码</Label>
+                <Input id="twoFactorCode" name="twoFactorCode" autoComplete="one-time-code" minLength={6} required className="h-11 text-center text-lg" />
               </div>
             )}
             {!challengeToken && turnstileRequired && (
@@ -82,6 +88,6 @@ export function LoginPage() {
           </div>
         )}
       </div>
-    </div>
+    </main>
   )
 }

apps/web/src/pages/not-found.tsx

@@ -4,7 +4,7 @@ import { Home, MailQuestion } from "lucide-react"
 
 export function NotFoundPage() {
   return (
-    <div className="grid min-h-screen place-items-center bg-background px-4">
+    <main className="grid min-h-screen place-items-center bg-background px-4">
       <div className="w-full max-w-sm text-center">
         <div className="mb-6 flex justify-center">
           <div className="flex h-20 w-20 items-center justify-center rounded-full bg-muted">
@@ -24,6 +24,6 @@ export function NotFoundPage() {
           </Button>
         </div>
       </div>
-    </div>
+    </main>
   )
 }

apps/web/src/pages/register.tsx

@@ -13,6 +13,7 @@ import { useToast } from "@/hooks/use-toast"
 import { PasswordInput } from "@/components/ui/password-input"
 import { TurnstileBox } from "@/components/turnstile-box"
 import { validatePasswordConfirm } from "@/lib/validation"
+import { AuthError, AuthLoading } from "@/components/auth-states"
 
 export function RegisterPage() {
   const me = useMe()
@@ -24,32 +25,28 @@ export function RegisterPage() {
   const [domainId, setDomainId] = React.useState("")
   const domains: PublicDomain[] = publicSettings.data?.mailboxDomains || []
   const selectedDomain = domains.find((d) => d.id === domainId)
+  React.useEffect(() => {
+    if (!domainId && domains[0]) setDomainId(domains[0].id)
+    if (domainId && !domains.some((domain) => domain.id === domainId)) setDomainId(domains[0]?.id || "")
+  }, [domainId, domains])
 
   const register = useMutation({
     mutationFn: (form: FormData) => {
       const password = String(form.get("password") || "")
       const confirmPassword = String(form.get("confirmPassword") || "")
       validatePasswordConfirm(password, confirmPassword)
-
-      if (domainId && selectedDomain) {
-        const localPart = String(form.get("localPart") || "").trim()
-        if (!localPart) throw new Error("请输入邮箱前缀")
-        return api.register({
-          email: `${localPart}@${selectedDomain.name}`,
-          displayName: String(form.get("displayName") || ""),
-          password,
-          turnstileToken,
-          domainId,
-          localPart,
-        })
-      }
-
-      // Fallback: no domains available, use email directly
+      const displayName = String(form.get("displayName") || "").trim()
+      if (!displayName) throw new Error("请输入显示名称")
+      const localPart = String(form.get("localPart") || "").trim()
+      if (!localPart) throw new Error("请输入邮箱前缀")
+      if (!domainId || !selectedDomain) throw new Error("请选择邮箱域名")
       return api.register({
-        email: String(form.get("email") || ""),
-        displayName: String(form.get("displayName") || ""),
+        email: `${localPart}@${selectedDomain.name}`,
+        displayName,
         password,
         turnstileToken,
+        domainId,
+        localPart,
       })
     },
     onSuccess: async () => {
@@ -61,8 +58,10 @@ export function RegisterPage() {
   })
   const turnstileRequired = !!publicSettings.data?.turnstileEnabled
   if (me.data?.user) return <Navigate to="/" replace />
+  if (publicSettings.isLoading) return <AuthLoading />
+  if (publicSettings.isError) return <AuthError message={publicSettings.error.message} onRetry={() => { void publicSettings.refetch() }} />
   return (
-    <div className="flex min-h-screen items-center justify-center bg-muted/20 px-4 py-10">
+    <main 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">NewSzxcn 邮箱</h1>
@@ -102,14 +101,11 @@ export function RegisterPage() {
                   </div>
                 </div>
               ) : (
-                <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" />
-                </div>
+                <div className="rounded-md bg-muted/40 px-4 py-3 text-center text-sm text-muted-foreground">当前没有可注册的邮箱域名</div>
               )}
               <div className="space-y-2">
                 <Label htmlFor="displayName" className="text-sm font-medium">显示名称</Label>
-                <Input id="displayName" name="displayName" autoComplete="name" className="h-11 text-base" />
+                <Input id="displayName" name="displayName" autoComplete="name" required className="h-11 text-base" />
               </div>
               <div className="space-y-2">
                 <Label htmlFor="password" className="text-sm font-medium">密码</Label>
@@ -120,7 +116,7 @@ export function RegisterPage() {
                 <PasswordInput id="confirmPassword" name="confirmPassword" autoComplete="new-password" minLength={6} required className="h-11 text-base" />
               </div>
               {turnstileRequired && <TurnstileBox siteKey={publicSettings.data?.turnstileSiteKey || ""} onToken={setTurnstileToken} />}
-              <Button className="h-11 w-full text-base" disabled={register.isPending || publicSettings.isLoading}>
+              <Button className="h-11 w-full text-base" disabled={register.isPending || publicSettings.isLoading || domains.length === 0}>
                 {register.isPending ? "注册中..." : "注册"}
                 {!register.isPending && <ArrowRight className="h-4 w-4" />}
               </Button>
@@ -136,6 +132,6 @@ export function RegisterPage() {
           </div>
         )}
       </div>
-    </div>
+    </main>
   )
 }

apps/web/vite.config.ts

@@ -1,19 +1,44 @@
 import path from "node:path"
 import react from "@vitejs/plugin-react"
-import { defineConfig } from "vite"
+import { defineConfig, loadEnv } from "vite"
 
-export default defineConfig({
-  plugins: [react()],
-  resolve: {
-    alias: {
-      "@": path.resolve(__dirname, "./src"),
+export default defineConfig(({ mode }) => {
+  const env = loadEnv(mode, process.cwd(), "")
+  const apiTarget = env.VITE_API_TARGET || "http://localhost:8080"
+
+  return {
+    plugins: [react()],
+    resolve: {
+      alias: {
+        "@": path.resolve(__dirname, "./src"),
+      },
     },
-  },
-  server: {
-    port: 5173,
-    proxy: {
-      "/api": "http://localhost:8080",
-      "/healthz": "http://localhost:8080",
+    server: {
+      port: 5173,
+      proxy: {
+        "/api": apiTarget,
+        "/healthz": apiTarget,
+      },
     },
-  },
+    build: {
+      rolldownOptions: {
+        output: {
+          codeSplitting: {
+            groups: [
+              {
+                name: "prosemirror",
+                test: /node_modules[\\/]prosemirror-/,
+                priority: 30,
+              },
+              {
+                name: "tiptap",
+                test: /node_modules[\\/]@tiptap/,
+                priority: 20,
+              },
+            ],
+          },
+        },
+      },
+    },
+  }
 })

deploy/.env.example

@@ -51,9 +51,13 @@ LANQIN_TLS_KEY_FILE=
 # =========================
 # 初始管理员
 # =========================
-# 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
+# 第一次启动时会创建唯一管理员账号和真实管理员邮箱。
+# 网页前台和后台统一使用完整主登录邮箱 + 密码登录。
+LANQIN_MAIL_DOMAIN=example.com
+LANQIN_ADMIN_EMAIL=admin@example.com
+
+# 旧版本兼容字段，网页登录不再使用；新安装脚本会写入管理员邮箱前缀。
+LANQIN_ADMIN_USERNAME=
 
 # 生产环境必须改掉默认密码。
 LANQIN_ADMIN_PASSWORD=ChangeMe123!
@@ -179,6 +183,22 @@ LANQIN_EXTERNAL_IMAP_GMAIL_CLIENT_SECRET=
 LANQIN_EXTERNAL_IMAP_OUTLOOK_CLIENT_ID=
 LANQIN_EXTERNAL_IMAP_OUTLOOK_CLIENT_SECRET=
 
+# =========================
+# Telegram 私聊邮件通知
+# =========================
+# 也可在管理后台“系统设置 > 通知”中配置；后台保存的设置优先于环境变量。
+# 启用后，新收邮件会先写入本地通知队列，再发送到指定 Telegram 私聊；发送失败不会影响收件。
+LANQIN_TELEGRAM_MAIL_ENABLED=false
+
+# 从 @BotFather 获取。不要提交真实 Token，也不要与版本发布频道机器人共用。
+LANQIN_TELEGRAM_BOT_TOKEN=
+
+# Telegram 私聊 Chat ID。先向机器人发送 /start，再在后台点击“自动获取”。
+LANQIN_TELEGRAM_PRIVATE_CHAT_ID=
+
+# summary：正文摘要；full：尽量显示完整正文。两种模式都会限制长度。
+LANQIN_TELEGRAM_BODY_MODE=summary
+
 # =========================
 # 系统
 # =========================

deploy/README.md

@@ -18,15 +18,16 @@ sudo newszxcn-email rollback
 sudo newszxcn-email guide
 sudo newszxcn-email credentials
 sudo newszxcn-email reset-password
+sudo newszxcn-email reset-2fa
 ```
 
 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。
 
-首次安装会依次询问防火墙模式、邮件服务器域名、管理员用户名/密码和 Web 部署方式。防火墙可以选择自动添加邮局必要端口规则或保留现有规则，不会清空服务器已有防火墙。自动 Web 模式会把容器绑定到 `127.0.0.1:8088`，配置宿主机 Nginx，并使用官方 `acme.sh` 申请和续期证书。自定义管理员密码最少 6 位，留空则生成 12 位密码。
+首次安装会依次询问防火墙模式和邮件服务器域名，自动检测邮箱地址域名，再选择默认 `admin` 前缀或自行创建管理员邮箱前缀，最后输入密码并选择 Web 部署方式。防火墙可以选择自动添加邮局必要端口规则或保留现有规则，不会清空服务器已有防火墙。自动 Web 模式会把容器绑定到 `127.0.0.1:8088`，配置宿主机 Nginx，并使用官方 `acme.sh` 申请和续期证书。例如服务器域名 `mail.newszxcn.com`、选择默认前缀会创建 `admin@newszxcn.com`；自定义管理员密码最少 6 位，留空则生成 12 位密码。
 
 安装后输入 `ns` 可以打开统一管理菜单。更新前会创建包含数据库、镜像、Compose、环境、安装脚本和 Nginx 的回滚快照；更新或健康检查失败时会自动恢复。手动完整回滚前还会单独备份当前数据库，回滚镜像会保持锁定到下一次更新。
 
-菜单可查看安装或最近一次命令行重置时记录的管理员登录信息，也可单独重置配置管理员的统一登录密码。密码采用 bcrypt 哈希，无法从数据库反向解密；网页修改密码后，脚本中的记录可能已经失效。命令行重置前会备份并校验数据库，同时同步该管理员名下邮箱的 SMTP/IMAP 密码，不会修改普通用户或其邮箱。
+菜单可查看安装或最近一次命令行重置时记录的管理员登录信息，也可单独重置唯一管理员的统一登录密码。密码采用 bcrypt 哈希，无法从数据库反向解密；网页修改密码后，脚本中的记录可能已经失效。命令行重置前会备份并校验数据库，同时同步该管理员名下邮箱的 SMTP/IMAP 密码，不会修改普通用户或其邮箱。唯一管理员 2FA 锁死时可使用 `sudo newszxcn-email reset-2fa` 应急关闭。
 
 ## 最简单部署：单容器镜像版
 
@@ -35,7 +36,7 @@ sudo newszxcn-email reset-password
 ```bash
 cd deploy
 cp .env.example .env
-# 修改 LANQIN_PUBLIC_HOSTNAME / LANQIN_PUBLIC_BASE_URL / LANQIN_ADMIN_USERNAME / LANQIN_ADMIN_PASSWORD
+# 修改 LANQIN_PUBLIC_HOSTNAME / LANQIN_PUBLIC_BASE_URL / LANQIN_MAIL_DOMAIN / LANQIN_ADMIN_EMAIL / LANQIN_ADMIN_PASSWORD
 docker compose pull
 docker compose up -d
 ```
@@ -147,13 +148,40 @@ docker compose -f docker-compose.stack.yml -f docker-compose.stack.build.yml up
 
 配置完成后点击“检测”。
 
+## Telegram 通知
+
+### 私聊新邮件通知
+
+每台邮局可以在“管理后台 -> 系统设置 -> 通知”中独立配置 Telegram 私聊邮件通知：
+
+1. 使用 `@BotFather` 创建机器人并填写 Bot Token。
+2. 在 Telegram 中打开该机器人并发送 `/start`。
+3. 回到后台点击“自动获取”，系统会填写最近一个私聊 Chat ID。
+4. 选择“正文摘要”或“尽量显示完整正文”，点击“测试通知”。
+5. 测试成功后开启“私聊新邮件通知”并保存。
+
+Bot Token 不会通过设置查询接口返回。新邮件通知会先持久化到 SQLite 队列，Telegram 暂时不可用时按退避策略重试；通知失败不会阻塞收件。通知包含发件人、收件邮箱、主题、收件时间、正文和附件名称，不会把附件文件上传到 Telegram。
+
+手动部署也可以在 `.env` 中设置 `LANQIN_TELEGRAM_MAIL_ENABLED`、`LANQIN_TELEGRAM_BOT_TOKEN`、`LANQIN_TELEGRAM_PRIVATE_CHAT_ID` 和 `LANQIN_TELEGRAM_BODY_MODE`。后台保存的值会持久化到数据库，并在后续启动时优先使用。
+
+### GitHub Release 版本频道通知
+
+版本频道通知由 GitHub Release 工作流统一发送，与各台已部署邮局是否更新无关。仓库需要配置以下 GitHub Actions Secrets：
+
+```text
+TELEGRAM_RELEASE_BOT_TOKEN
+TELEGRAM_RELEASE_CHAT_ID
+```
+
+`TELEGRAM_RELEASE_CHAT_ID` 可以填写频道用户名（例如 `@YourChannel`）或频道数字 ID。机器人必须先添加为频道管理员，并具有发布消息权限。工作流只在检查、全部 Docker 镜像和 GitHub Release 成功后发送一次；未配置密钥时自动跳过，Telegram 发送失败也不会把版本发布标记为失败。
+
 ## 邮件服务边界
 
 - Postfix 读取 `/data/lanqin.db` 中的 `domains`、`mailboxes`、`aliases`。
 - Dovecot 读取同一个 SQLite 数据库进行邮箱认证，并使用 `/var/mail/vhosts` 作为 Maildir 根目录。
 - 第三方客户端可使用 IMAP SSL `993`、POP3 SSL `995`、SMTP SSL `465` 或 Submission `587`。
 - Rspamd 通过 milter 接入 Postfix，负责 DKIM 签名和垃圾邮件标记。
-- Rspamd 会周期性从 SQLite 导出域名 DKIM 私钥到容器内 `/var/lib/rspamd/dkim`。
+- Rspamd 会周期性从 SQLite 导出域名 DKIM 私钥到容器内 `/var/lib/rspamd/dkim`；仅当密钥内容变化时重新载入签名配置，避免继续使用内存中的旧密钥。
 - 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。

deploy/rspamd/sync-dkim.sh

@@ -13,8 +13,20 @@ chown_dkim_dir() {
   fi
 }
 
+reload_rspamd() {
+  if command -v rspamadm >/dev/null 2>&1 && rspamadm control reload >/dev/null 2>&1; then
+    echo "Rspamd reloaded after DKIM key update"
+    return 0
+  fi
+  if command -v pkill >/dev/null 2>&1 && pkill -HUP -x rspamd 2>/dev/null; then
+    echo "Rspamd reloaded after DKIM key update"
+  fi
+}
+
 sync_keys() {
+  changed_marker="$LANQIN_RSPAMD_DKIM_DIR/.reload-required.$$"
   mkdir -p "$LANQIN_RSPAMD_DKIM_DIR"
+  rm -f "$changed_marker"
   if [ ! -f "$LANQIN_DB_PATH" ]; then
     chown_dkim_dir
     return 0
@@ -24,13 +36,22 @@ sync_keys() {
     [ -n "$domain" ] || continue
     [ -n "$selector" ] || selector="lanqin"
     keyfile="$LANQIN_RSPAMD_DKIM_DIR/${domain}.${selector}.key"
-    tmpfile="${keyfile}.tmp"
+    tmpfile="${keyfile}.tmp.$$"
     printf '%s' "$private_key" | base64 -d > "$tmpfile"
     chmod 0640 "$tmpfile"
-    mv "$tmpfile" "$keyfile"
+    if [ -f "$keyfile" ] && cmp -s "$tmpfile" "$keyfile"; then
+      rm -f "$tmpfile"
+    else
+      mv "$tmpfile" "$keyfile"
+      : > "$changed_marker"
+    fi
   done
 
   chown_dkim_dir
+  if [ -f "$changed_marker" ]; then
+    rm -f "$changed_marker"
+    reload_rspamd
+  fi
 }
 
 if [ "${1:-}" = "--once" ]; then

docs/GUIDE.md

@@ -1,4 +1,4 @@
-# NewSzxcn 邮箱指南
+# NewSzxcn 邮箱后台配置指南
 
 本指南介绍 NewSzxcn Email 的安装入口、首次配置、邮箱申请、无人收件、SSL 证书和日常更新。管理员密码等敏感信息不会保存在本文档中。
 
@@ -10,9 +10,9 @@
 bash <(curl -fsSL https://raw.githubusercontent.com/zxyszx/NewSzxcn-Email/main/install.sh)
 ```
 
-安装脚本会依次询问防火墙配置、邮件服务器域名、管理员用户名和密码，以及 Web 部署方式。选择“自动配置 Nginx + SSL”时，脚本会安装 Nginx，并使用官方 `acme.sh` 申请 Let's Encrypt 证书。
+安装脚本会依次询问防火墙配置和邮件服务器域名，自动检测邮箱地址域名，再让你选择默认 `admin` 前缀或自定义管理员邮箱前缀，最后输入密码并选择 Web 部署方式。例如输入服务器域名 `mail.newszxcn.com`，确认检测结果 `@newszxcn.com`，选择 `1. 使用默认前缀 admin` 会创建 `admin@newszxcn.com`；选择 `2. 自定义管理员邮箱前缀` 后才需要输入邮箱账号前缀。选择“自动配置 Nginx + SSL”时，脚本会安装 Nginx，并使用官方 `acme.sh` 申请 Let's Encrypt 证书。
 
-安装完成后，请记录终端中显示的访问地址、管理员用户名和初始密码。初始密码仅在安装时显示；如果以后在后台修改密码，请以新密码为准。
+安装完成后，请记录终端中显示的访问地址、管理员邮箱和初始密码。初始密码仅在安装时显示；如果以后在后台修改密码，请以新密码为准。
 
 ## 登录入口
 
@@ -23,7 +23,7 @@ bash <(curl -fsSL https://raw.githubusercontent.com/zxyszx/NewSzxcn-Email/main/i
 | 邮箱前台 | `https://mail.example.com/` | 收发邮件、申请邮箱和账号设置 |
 | 管理后台 | `https://mail.example.com/admin` | 管理域名、账号、邮箱、DNS 和系统设置 |
 
-管理员账号是安装时填写的用户名，默认为 `admin`。管理员用户名不是邮箱地址。
+管理员账号是安装时创建的完整邮箱地址，默认为 `admin@邮箱地址域名`。前台和后台都只能使用完整主登录邮箱 + 密码登录，显示名称仅用于页面展示。
 
 ## 首次配置
 
@@ -59,6 +59,24 @@ DNS 生效通常需要几分钟到数小时。系统只能检测记录，不能
 
 无人收件不会自动创建邮箱，也不会把邮件分配给普通用户。只有管理员可以在邮箱前台左侧的“未知收件”中查看这些邮件。
 
+## Telegram 私聊邮件通知
+
+管理员可以把每封新收邮件的概要发送到自己的 Telegram 私聊：
+
+1. 使用 `@BotFather` 创建一个邮件通知机器人并取得 Bot Token。
+2. 进入“管理后台 -> 系统设置 -> 通知”，填写 Bot Token。
+3. 点击“安全绑定”生成一次性绑定码，再点击“打开机器人”。
+4. 在机器人会话中发送页面生成的绑定码，然后点击“完成绑定”。
+5. 勾选需要通知的邮箱；需要接收未注册地址邮件时，另行勾选“未知收件”。
+6. 选择正文显示方式并点击“测试通知”。
+7. 测试成功后开启“私聊新邮件通知”，保存设置。
+
+一次性绑定码有效期为 10 分钟，只会匹配发送了该绑定码的私聊账号。通知会显示主题、发件人、收件邮箱、服务器收件时间、正文和附件摘要；识别到唯一高可信验证码时，会高亮显示并提供“复制验证码”按钮。外部 IMAP 第一次同步导入的历史邮件不会发送通知，后续新邮件才会通知。
+
+Telegram 连接失败不会影响邮局收件。系统会保留通知任务并自动重试；关闭通知、更换机器人、更换私聊账号或修改通知邮箱范围时，尚未发送的旧任务会被清除。Telegram Bot API 不提供客户端幂等键，因此网络超时发生在 Telegram 已收到请求但服务器未收到响应时，极少数通知可能重复发送。Bot Token 不会在设置页面重新显示；以后修改其他设置时，Token 输入框留空即可保留原值。
+
+邮件通知机器人只负责部署实例的私聊提醒。项目版本频道通知由 GitHub Release 工作流统一发送，不需要在每台服务器重复配置。
+
 ## SSL 证书与自动续期
 
 选择“自动配置 Nginx + SSL”后，官方 `acme.sh` 会安装定时检查任务。证书接近到期时会自动续期，续期成功后自动重载 NewSzxcn Email 和 Nginx。
@@ -105,13 +123,14 @@ sudo newszxcn-email rollback
 sudo newszxcn-email guide
 sudo newszxcn-email credentials
 sudo newszxcn-email reset-password
+sudo newszxcn-email reset-2fa
 ```
 
 命令行更新会创建完整回滚快照、校验 SQLite 数据库备份、拉取最新镜像并执行健康检查。`rollback` 命令会先备份当前数据库并要求确认，然后恢复上次更新前的镜像、数据库、Compose、环境、安装脚本和 Nginx 配置。回滚镜像会保持锁定，下一次执行更新时解除。
 
-`guide` 命令会读取当前安装地址、管理员用户名、证书到期时间和 acme.sh 续期状态，重新生成仅 root 可读的 `/root/newszxcn-email-guide.txt`。
+`guide` 命令会读取当前安装地址、管理员邮箱、证书到期时间和 acme.sh 续期状态，重新生成仅 root 可读的 `/root/newszxcn-email-guide.txt`。
 
-`credentials` 显示安装或最近一次命令行重置时记录的管理员登录信息。数据库只保存 bcrypt 密码哈希，无法反向查看真实密码；若管理员后来在网页修改过密码，记录值可能已经失效。忘记密码时执行 `reset-password`，脚本会先备份并校验数据库，然后重置配置管理员的统一登录密码，同时同步该管理员名下邮箱的 SMTP/IMAP 密码。该操作不会修改普通用户或其邮箱。
+`credentials` 显示安装或最近一次命令行重置时记录的管理员登录信息。数据库只保存 bcrypt 密码哈希，无法反向查看真实密码；若管理员后来在网页修改过密码，记录值可能已经失效。忘记密码时执行 `reset-password`，脚本会先备份并校验数据库，然后按管理员邮箱重置唯一管理员的统一登录密码，同时同步该管理员名下邮箱的 SMTP/IMAP 密码。该操作不会修改普通用户或其邮箱。唯一管理员因双因素认证无法登录时，可执行 `reset-2fa` 应急关闭管理员 2FA，登录后应重新绑定并保存新的恢复码。
 
 超级管理员也可以点击管理后台侧栏中的版本号，在版本更新页面检查并安装新版本。
 

docs/ISSUE_LEDGER.md

@@ -0,0 +1,425 @@
+# NewSzxcn Email 问题台账
+
+本文件是 NewSzxcn Email 的单一问题台账。所有问题保留唯一编号和完整历史，不重复建立“历史问题”副本。
+
+## 管理模式
+
+- 当前任务是唯一长期运行的 NewSzxcn 项目任务。
+- 内部按项目总览、问题中心、前端、后端、邮件核心、部署运维、质量复核、文档发布分类管理。
+- 用户提出问题后，默认在同一任务内完成分类、资料查询、代码/服务器调查、修复、测试、复核和发布门禁。
+- 只有问题确实复杂且用户同意时，才临时开启专项任务。
+- 用户明确说“先记录”“不要修改”“等问题多了一起处理”时，只登记和调查，不实施产品代码修改。
+
+## 状态
+
+允许状态：新反馈、待复现、待确认、待处理、处理中、待验收、已完成、已归档。
+
+固定流程：收集问题 -> 复现 -> 用户确认批次 -> 实现 -> 回归 -> CI -> 全部镜像完成 -> Release -> 通知更新 -> 线上验收。
+
+发布门禁：CI 未通过不得进入 Release；全部镜像未完成不得通知更新。
+
+## 模块职责
+
+| 分类 | 责任 |
+| --- | --- |
+| 项目总览 | 统一编号、状态流转、批次确认、冲突协调、发布门禁 |
+| 问题中心 | 问题收集、复现证据、影响面、严重度、完整历史 |
+| 前端 | Web 页面、交互、批量操作、权限可见性、前端构建 |
+| 后端 | API、鉴权、数据库、业务校验、后台任务 |
+| 邮件核心 | IMAP/SMTP、Postfix、Dovecot、Rspamd、Maildir、投递与同步 |
+| 部署运维 | install.sh、Docker、Compose、Nginx、CI/CD、服务器调查 |
+| 质量复核 | 独立复核、回归测试、风险确认、验收建议 |
+| 文档发布 | 版本说明、部署说明、Release 文案、更新通知 |
+
+## 问题列表
+
+| 编号 | 日期 | 状态 | 模块 | 现象 | 严重度 | 目标版本 | 发布状态 |
+| --- | --- | --- | --- | --- | --- | --- | --- |
+| NSX-20260804-001 | 2026-08-04 | 已完成 | 前端主责；后端、邮件核心协作 | 全部邮箱批量移动到自定义文件夹失败 | S2 | v1.2.14 | 随 v1.2.14 发布 |
+| NSX-20260804-002 | 2026-08-04 | 已完成 | 前端/UI/响应式布局 | 邮箱选择器展开后宽度变窄 | S3 | v1.2.14 | 随 v1.2.14 发布 |
+| NSX-20260805-003 | 2026-08-05 | 已完成 | 前端/UI/布局稳定性 | 邮箱页与设置页侧栏宽度/边框位置不一致 | S3 | v1.2.14 | 随 v1.2.14 发布 |
+| NSX-20260806-004 | 2026-08-06 | 已完成 | 前端/UI/响应式布局 | “全部邮箱”选择器右侧存在复制按钮空白占位 | S3 | v1.2.15 | 随 v1.2.15 发布 |
+| NSX-20260806-005 | 2026-08-06 | 已完成 | 后端/通知；前端/设置；部署运维/CI | Telegram 私聊邮件通知与 Release 频道通知 | S3 | v1.2.16 | 随 v1.2.16 发布 |
+| NSX-20260806-006 | 2026-08-06 | 已完成 | 后端/通知；邮件核心；前端/设置；质量复核 | Telegram 邮件通知安全、验证码复制和可靠性复核 | S2 | v1.2.17 | 随 v1.2.17 发布 |
+| NSX-20260806-007 | 2026-08-06 | 已完成 | 前端/UI；后端/通知；部署运维/CI | 邮箱下拉层越界、验证码漏识别、邮件与版本通知链接样式 | S3 | v1.2.18 | 随 v1.2.18 发布 |
+| NSX-20260807-008 | 2026-08-07 | 已完成 | 前端/UI；邮件发送；部署运维/安装 | 全部邮箱写信无法选择发件邮箱且默认项错误，写信窗口过宽；安装管理员邮箱流程需明确 | S3 | v1.2.19 | 随 v1.2.19 发布 |
+| NSX-20260807-009 | 2026-08-07 | 已完成 | 部署运维/安装；文档；质量复核 | 一键安装主菜单未按安装状态区分，命令前置条件和状态显示需复核 | S2 | v1.2.19 | 随 v1.2.19 发布 |
+| NSX-20260807-010 | 2026-08-07 | 已完成 | 邮件投递；DKIM；部署运维；质量复核 | Rspamd 在域名密钥变化后继续使用旧私钥，导致外发邮件 DKIM 验证失败 | S2 | v1.2.19 | 随 v1.2.19 发布，线上 DKIM 已验收通过 |
+| NSX-20260807-011 | 2026-08-07 | 已完成 | 后端/通知；验证码识别；质量复核 | 邮件地址中的字母数字片段触发验证码候选冲突，导致 Telegram 不显示验证码与复制按钮 | S3 | v1.2.19 | 随 v1.2.19 发布 |
+| NSX-20260807-012 | 2026-08-07 | 已完成 | 前端/UI；域名管理；质量复核 | DNS 记录复制按钮把类型、名称和值拼成整行，无法直接粘贴到域名服务商对应字段 | S3 | v1.2.19 | 随 v1.2.19 发布 |
+| NSX-20260807-013 | 2026-08-07 | 已完成 | 邮件核心；前端/标签；数据迁移；质量复核 | 邮箱创建后没有常用默认标签，需要手动逐个建立 | S3 | v1.2.19 | 随 v1.2.19 发布 |
+
+## NSX-20260804-001
+
+| 字段 | 内容 |
+| --- | --- |
+| 编号 | NSX-20260804-001 |
+| 日期 | 2026-08-04 |
+| 状态 | 已完成 |
+| 模块 | 前端主责；后端、邮件核心协作；质量复核待后续介入 |
+| 现象 | 全部邮箱批量移动到自定义文件夹失败 |
+| 截图 | 待用户补充 |
+| 复现步骤 | 待补充。已知描述：选择全部邮箱后，批量移动到自定义文件夹失败。 |
+| 影响 | 影响批量整理邮件，用户可能只能逐封或分批移动；是否造成数据错位或丢失待复现确认。 |
+| 严重度 | S2 |
+| 根因 | 全部邮箱视图中批量移动沿用单邮箱移动路径，目标自定义文件夹没有按消息所属邮箱分别解析/创建，跨邮箱消息会出现 `failed to move message`。 |
+| 关联提交 | 未提交；关联工作区文件：`apps/api/internal/app/mail_handlers.go`、`apps/web/src/pages/mail.tsx`、`apps/web/src/lib/api.ts`、`apps/api/internal/app/app_test.go`。 |
+| 目标版本 | v1.2.14 |
+| 测试结果 | 已完成 Go 全量测试、go vet、前端 check/build、安装脚本测试和 ShellCheck；批量移动回归测试覆盖跨邮箱、自定义文件夹及部分失败结果。 |
+| 发布状态 | 随 v1.2.14 发布。 |
+
+### 分派
+
+| 分类 | 处理方式 |
+| --- | --- |
+| 项目总览 | 已纳入本批实施，当前状态待验收，未进入发布。 |
+| 问题中心 | 已补充根因和实现证据；等待完整回归和用户线上验收。 |
+| 前端 | 已接入批量移动接口并展示中文成功/失败明细。 |
+| 后端 | 已实现批量移动接口，按消息所属邮箱隔离处理目标文件夹和权限。 |
+| 邮件核心 | 已保持消息所属邮箱和文件夹映射隔离，完整运行回归待主任务执行。 |
+| 部署运维 | 暂无服务器动作；涉及线上日志或容器状态时再介入。 |
+| 质量复核 | 修复后独立复核批量移动、部分失败、权限边界、回归风险。 |
+| 文档发布 | 进入版本批次后整理发布说明；全部镜像完成后才可通知更新。 |
+
+### 历史
+
+| 时间 | 记录 |
+| --- | --- |
+| 2026-08-04 | 用户指定切换为精简单任务模式，并要求“全部邮箱批量移动到自定义文件夹失败”继续只调查不修改，等待汇总更多问题。 |
+| 2026-08-04 | 项目总控建立唯一问题编号 NSX-20260804-001，状态设为待复现。 |
+| 2026-08-05 | 用户确认本批继续实施；已实现可靠批量移动接口并接入前端批量移动入口，状态流转为待验收。 |
+
+## NSX-20260804-002
+
+| 字段 | 内容 |
+| --- | --- |
+| 编号 | NSX-20260804-002 |
+| 日期 | 2026-08-04 |
+| 状态 | 已完成 |
+| 模块 | 前端/UI/响应式布局；质量复核待后续介入 |
+| 现象 | 左侧栏选择具体邮箱账号后，顶部邮箱选择器和展开菜单比“全部邮箱”状态明显变窄，邮箱地址显示为 `crrhuawei@new...`，下拉项也被过早截断。右侧复制按钮占位后，选择器宽度发生变化。 |
+| 截图 | `/var/folders/wg/mx262rx107b8j614sq2mnmy00000gn/T/codex-clipboard-fadc6a64-ce13-4a5e-ae8f-5de7e7756e62.png` |
+| 复现步骤 | 1. 打开邮箱左侧栏。 2. 从“全部邮箱”切换到具体邮箱账号。 3. 展开顶部邮箱选择器。 4. 观察选择器宽度、展开菜单宽度、邮箱地址截断和复制按钮出现后的布局变化。 |
+| 影响 | 影响账号切换区域的可读性和稳定性；邮箱地址过早截断，复制按钮出现时造成布局跳变。 |
+| 严重度 | S3 |
+| 根因 | 邮箱选择器右侧复制按钮只在具体邮箱状态占位，触发区域宽度随状态变化；下拉菜单宽度跟随被挤压后的触发区域，导致邮箱地址过早截断。 |
+| 关联提交 | 未提交；关联工作区文件：`apps/web/src/pages/mail.tsx`。 |
+| 目标版本 | v1.2.14 |
+| 测试结果 | 前端 check/build 通过；桌面浏览器验证“全部邮箱”和具体邮箱状态均保留复制按钮固定槽位，具体邮箱触发区宽 225px；390×844 移动端无横向溢出。 |
+| 发布状态 | 随 v1.2.14 发布。 |
+
+### 期望
+
+邮箱选择器在“全部邮箱”和具体邮箱两种状态下保持原来的稳定长度；展开菜单宽度与选择区域协调，尽量完整显示邮箱地址；复制按钮出现时不能挤压选择器或造成布局跳变。
+
+### 关联
+
+与此前“全部邮箱选择器长度、复制按钮出现后布局变化”反馈关联；本条作为可复现回归继续保留，不合并归档。
+
+### 分派
+
+| 分类 | 处理方式 |
+| --- | --- |
+| 项目总览 | 已纳入本批实施，当前状态待验收，未进入发布。 |
+| 问题中心 | 保留截图路径、现象、期望和关联背景；已补充根因和实现证据。 |
+| 前端 | 已固定复制按钮占位和下拉菜单宽度，等待桌面/移动验收。 |
+| 后端 | 暂无介入需求。 |
+| 邮件核心 | 暂无介入需求。 |
+| 部署运维 | 暂无介入需求。 |
+| 质量复核 | 修复后复核“全部邮箱”和具体邮箱两种状态、展开菜单、长邮箱地址、复制按钮出现前后布局稳定性。 |
+| 文档发布 | 进入版本批次后整理发布说明；全部镜像完成后才可通知更新。 |
+
+### 历史
+
+| 时间 | 记录 |
+| --- | --- |
+| 2026-08-04 | 用户新增“邮箱选择器展开后宽度变窄”待处理问题，要求只登记，不修改。 |
+| 2026-08-04 | 项目总控建立唯一问题编号 NSX-20260804-002，状态设为待处理。 |
+| 2026-08-05 | 用户确认本批继续实施；已固定复制按钮占位和下拉菜单宽度，状态流转为待验收。 |
+
+## NSX-20260805-003
+
+| 字段 | 内容 |
+| --- | --- |
+| 编号 | NSX-20260805-003 |
+| 日期 | 2026-08-05 |
+| 状态 | 已完成 |
+| 模块 | 前端/UI/布局稳定性；质量复核待后续介入 |
+| 现象 | 邮箱页面左侧栏明显更宽，设置页面侧栏变窄，垂直分隔边框与主内容起点改变；点击齿轮切换时产生页面左右跳动和“页面变来变去”的感觉。 |
+| 截图 | 邮箱页：`/var/folders/wg/mx262rx107b8j614sq2mnmy00000gn/T/codex-clipboard-e293b3f1-7797-49ec-b5f9-b7de08ba4c6c.png`；设置页：`/var/folders/wg/mx262rx107b8j614sq2mnmy00000gn/T/codex-clipboard-89b85640-d262-4b1c-8996-cd097036614e.png` |
+| 复现步骤 | 1. 打开邮箱页面。 2. 观察左侧栏宽度、垂直分隔线、顶部栏高度和主内容起点。 3. 点击齿轮进入设置页面。 4. 对比设置页侧栏宽度、分隔线位置和主内容起点。 5. 返回邮箱页，观察页面是否左右跳动。 |
+| 影响 | 影响应用壳层稳定性和页面切换体验；邮箱页与设置页布局不一致会造成明显跳动，并可能影响邮箱选择器可用宽度。 |
+| 严重度 | S3 |
+| 根因 | 邮箱页和设置页分别使用独立侧栏宽度，设置页硬编码宽度小于邮箱页，导致切换时分隔线与主内容起点变化。 |
+| 关联提交 | 未提交；关联工作区文件：`apps/web/src/index.css`、`apps/web/src/pages/profile.tsx`、`apps/web/src/pages/mail.tsx`。 |
+| 目标版本 | v1.2.14 |
+| 测试结果 | 前端 check/build 通过；桌面浏览器实测邮箱页与设置页侧栏均为 288px，页面宽 1440px 且无横向溢出；390×844 移动端邮箱和设置页面均无横向溢出、遮挡或控制台错误。 |
+| 发布状态 | 随 v1.2.14 发布。 |
+
+### 期望
+
+邮箱和设置页面使用统一的应用壳层尺寸；侧栏宽度、垂直分隔线、顶部栏高度和主内容起点保持一致，只替换内部导航内容。后续方案需核对桌面与移动端，不允许使用会挤压邮箱选择器的临时宽度。
+
+### 批次关联
+
+纳入即将给用户确认的前端/UI/布局稳定性候选批次。与 NSX-20260804-002 均涉及邮箱页左侧区域布局稳定性，但本条关注跨页面应用壳层尺寸一致性，保持独立编号。
+
+### 分派
+
+| 分类 | 处理方式 |
+| --- | --- |
+| 项目总览 | 已纳入本批实施，当前状态待验收，未进入发布。 |
+| 问题中心 | 保留两张截图路径、现象、期望和验收注意事项；已补充根因和实现证据。 |
+| 前端 | 已统一邮箱页与设置页应用壳层侧栏宽度变量，等待桌面/移动验收。 |
+| 后端 | 暂无介入需求。 |
+| 邮件核心 | 暂无介入需求。 |
+| 部署运维 | 暂无介入需求。 |
+| 质量复核 | 修复后独立复核桌面与移动端页面切换稳定性，确认不会挤压邮箱选择器或造成新的布局跳变。 |
+| 文档发布 | 进入版本批次后整理发布说明；全部镜像完成后才可通知更新。 |
+
+### 历史
+
+| 时间 | 记录 |
+| --- | --- |
+| 2026-08-05 | 用户新增“邮箱页与设置页侧栏宽度/边框位置不一致”待处理问题，要求只登记并纳入即将确认的批次方案，现在不要修改。 |
+| 2026-08-05 | 项目总控建立唯一问题编号 NSX-20260805-003，状态设为待处理。 |
+| 2026-08-05 | 用户确认本批继续实施；已统一应用壳层侧栏宽度变量，状态流转为待验收。 |
+
+## NSX-20260806-004
+
+| 字段 | 内容 |
+| --- | --- |
+| 编号 | NSX-20260806-004 |
+| 日期 | 2026-08-06 |
+| 状态 | 已完成 |
+| 模块 | 前端/UI/响应式布局 |
+| 现象 | “全部邮箱”状态没有复制按钮，但选择器右侧仍永久保留一列空白区域，箭头与侧栏边框之间出现明显空块。 |
+| 截图 | `/var/folders/wg/mx262rx107b8j614sq2mnmy00000gn/T/codex-clipboard-ae8ada7f-ba00-4036-9103-8cb76b9496a2.png`；`/var/folders/wg/mx262rx107b8j614sq2mnmy00000gn/T/codex-clipboard-80fb1ec3-9e98-4159-a8fb-b79a0b0e9a32.png` |
+| 根因 | 为避免具体邮箱状态出现复制按钮时选择器缩窄，旧实现始终保留 32px 复制按钮网格列；“全部邮箱”状态只是隐藏按钮，没有释放占位。 |
+| 实现 | 选择器改为始终占满整行；只有具体邮箱状态才显示覆盖式复制按钮，并在选择器内容区预留图标空间。 |
+| 目标版本 | v1.2.15 |
+| 测试结果 | 前端 check/build 通过；1280px 桌面端选择器宽度在两种状态下均为 263px；390×844 移动端侧栏选择器宽度均为 294px，页面无横向溢出；控制台无错误或警告。 |
+| 发布状态 | 随 v1.2.15 发布。 |
+
+### 历史
+
+| 时间 | 记录 |
+| --- | --- |
+| 2026-08-06 | 用户反馈“全部邮箱”右侧存在空白块并要求修改。 |
+| 2026-08-06 | 已移除永久占位列，改为具体邮箱状态覆盖显示复制按钮，状态流转为待验收。 |
+
+## NSX-20260806-005
+
+| 字段 | 内容 |
+| --- | --- |
+| 编号 | NSX-20260806-005 |
+| 日期 | 2026-08-06 |
+| 状态 | 已完成 |
+| 模块 | 后端/通知；前端/设置；部署运维/CI；质量复核 |
+| 需求 | 后台配置 Telegram 机器人，将新邮件排版后发送到管理员私聊；GitHub Release 成功后统一向版本频道发送一次更新通知。 |
+| 边界 | 邮件通知由各部署实例独立配置；版本通知只由 GitHub Release 工作流发送，不依赖已部署邮局是否更新。 |
+| 实现 | 新增 Telegram 通知设置、私聊 Chat ID 自动获取、测试发送、正文模式、持久化通知队列、去重与失败重试；Release 工作流在全部镜像和 Release 成功后发送频道消息。 |
+| 安全 | Bot Token 不通过设置查询接口返回，不写入仓库；频道密钥使用 GitHub Actions Secrets；Telegram 失败不阻塞收件或版本发布。 |
+| 兼容性 | 数据库只新增表和设置项；默认关闭；现有配置、邮件、证书和在线更新方式不变。 |
+| 目标版本 | v1.2.16 |
+| 测试结果 | Go 全量测试和 vet、前端 check/build、安装脚本语法/ShellCheck/回归、工作流 YAML、密钥扫描、桌面和移动端页面检查均通过。 |
+| 发布状态 | 随 v1.2.16 发布。 |
+
+### 历史
+
+| 时间 | 记录 |
+| --- | --- |
+| 2026-08-06 | 用户确认后台只保留机器人私聊邮件通知，版本频道通知交由 GitHub Release 工作流统一发送。 |
+| 2026-08-06 | 已配置仓库频道通知密钥并完成频道实发测试；真实 Bot Token 未写入源码。 |
+| 2026-08-06 | 完成密钥隐藏、网络错误脱敏、通知失败隔离和 Release 重跑去重复核，状态流转为已完成。 |
+| 2026-08-06 | v1.2.16 检查、六个 Docker 镜像、GitHub Release 和 Telegram 频道通知全部成功。 |
+
+## NSX-20260806-006
+
+| 字段 | 内容 |
+| --- | --- |
+| 编号 | NSX-20260806-006 |
+| 日期 | 2026-08-06 |
+| 状态 | 已完成 |
+| 模块 | 后端/通知；邮件核心；前端/设置；质量复核 |
+| 现象 | 原自动获取 Chat ID 可能匹配错误私聊；通知范围默认覆盖全部本地邮箱；关闭后重开可能补发旧任务；收件邮箱、正文编码、长度预算、错误重试和验证码复制不完整。 |
+| 根因 | 通知功能首版只覆盖基础发送，没有建立安全配对、显式邮箱范围、发送租约、Telegram 错误分类和统一的 MIME/正文规范化流程。 |
+| 实现 | 使用 10 分钟一次性绑定码；通知范围改为显式邮箱和未知收件选择；目的地或范围变化时事务清理旧任务；增加发送租约、Telegram 消息编号、送达后正文清除、400 纯文本降级、429 `retry_after`、401/403 停止重试；新增验证码评分与 `copy_text` 按钮、全消息长度预算、附件清理、GBK 等正文字符集解码和伪 HTML 清理。 |
+| 收件链路 | 修正实际收件地址解析；本地互发、未知收件和后续外部 IMAP 新邮件统一通知；首次外部 IMAP 历史导入不通知；收信规则先执行，垃圾邮件和已删除邮件不通知。 |
+| 兼容性 | 数据库仅增加可空闲迁移列和设置项；现有 Bot Token 保留且不回传；升级后管理员邮箱自动成为默认通知范围，已开启通知的实例继续包含未知收件。 |
+| 目标版本 | v1.2.17 |
+| 测试结果 | Telegram 专项测试、Go 全量测试、`go vet`、竞态检测、前端 shadcn 检查和生产构建通过；桌面端与移动端页面视觉验收通过。 |
+| 发布状态 | 随 v1.2.17 发布。 |
+
+### 历史
+
+| 时间 | 记录 |
+| --- | --- |
+| 2026-08-06 | 完成通知全链路复核，确认安全绑定、旧队列、收件地址、来源覆盖、长度预算、错误分类和 MIME 处理问题。 |
+| 2026-08-06 | 用户确认继续修改，并明确保留现有机器人 Token。 |
+| 2026-08-06 | 完成实现和自动化回归，状态流转为待验收。 |
+| 2026-08-06 | 完成桌面端与移动端页面验收及最终回归，状态流转为已完成。 |
+
+## NSX-20260806-007
+
+| 字段 | 内容 |
+| --- | --- |
+| 编号 | NSX-20260806-007 |
+| 日期 | 2026-08-06 |
+| 状态 | 已完成 |
+| 模块 | 前端/UI；后端/通知；部署运维/CI；质量复核 |
+| 现象 | 邮箱选择器展开层超过侧栏边框；含日期年份的验证码邮件未显示复制按钮；邮件长链接难以阅读；Release 通知底部按钮需改为正文文字链接。 |
+| 根因 | 展开层固定为 21rem，未跟随触发按钮；年份与真实验证码同时进入评分后触发歧义保护；正文仅转义未生成显式链接；Release 工作流使用 inline keyboard。 |
+| 实现 | 展开层宽度跟随触发按钮；排除年份和紧凑日期候选；正文 URL 安全转义并生成链接，长追踪地址缩短显示；Release 移除按钮并在正文末尾加入“查看本次更新”链接。 |
+| 目标版本 | v1.2.18 |
+| 测试结果 | Gate 转发邮件验证码与链接专项测试、Telegram 全部竞态测试、Go 全量测试和 vet、前端 check/build、工作流 YAML、差异格式检查均通过；桌面端“全部邮箱”和具体邮箱状态下触发按钮与下拉层均为 263px，左右边界一致且无控制台错误。 |
+| 发布状态 | 随 v1.2.18 发布。 |
+
+### 历史
+
+| 时间 | 记录 |
+| --- | --- |
+| 2026-08-06 | 用户提供三张截图并确认本批修改范围，问题进入处理中。 |
+| 2026-08-06 | 完成实现、自动化回归和桌面端视觉验收，状态流转为待验收。 |
+| 2026-08-06 | v1.2.18 检查、六个 Docker 镜像、GitHub Release 和 Telegram 频道通知全部成功，状态流转为已完成。 |
+
+## NSX-20260807-008
+
+| 字段 | 内容 |
+| --- | --- |
+| 编号 | NSX-20260807-008 |
+| 日期 | 2026-08-07 |
+| 状态 | 已完成 |
+| 模块 | 前端/UI；邮件发送；部署运维/安装；质量复核 |
+| 现象 | “全部邮箱”状态写信时固定使用列表第一项，无法选择发件邮箱；写信窗口在桌面端过宽；安装时邮件服务器域名、邮箱地址域名和管理员邮箱前缀的关系不够直观。 |
+| 根因 | 全部邮箱状态直接将邮箱列表第一项传入写信组件，组件只支持只读展示单个邮箱；窗口最大宽度为 82rem。 |
+| 实现 | “全部邮箱”写信默认优先匹配当前登录邮箱，并可在全部有效邮箱中切换；回复、转发沿用原邮件所属邮箱；发送、定时发送和草稿自动保存统一使用当前选择的发件邮箱；桌面写信窗口参照 Seek 收窄至最大 72rem；表单仅在新写信会话开始时初始化，切换邮箱或加载签名不会清空已填写内容；安装脚本回归测试明确覆盖 mail.newszxcn.com 对应 admin@newszxcn.com。 |
+| 目标版本 | v1.2.19 |
+| 测试结果 | 前端 check/build、Go 全量测试与 go vet、安装脚本测试、bash 语法检查、ShellCheck、git diff 检查均通过；本地双邮箱页面实测默认选择登录邮箱，下拉项完整，切换邮箱后收件人、主题、正文均保留，数据库确认草稿保存到新选择的邮箱；桌面截图确认写信窗口无溢出和遮挡。 |
+| 发布状态 | 随 v1.2.19 发布。 |
+
+### 历史
+
+| 时间 | 记录 |
+| --- | --- |
+| 2026-08-07 | 用户反馈全部邮箱写信的默认发件箱、邮箱选择和窗口宽度问题，进入处理中。 |
+| 2026-08-07 | 完成写信邮箱选择、默认项、回复/转发邮箱、草稿归属、窗口宽度和安装管理员邮箱交互修改；自动化与页面验收通过，状态流转为待验收。 |
+| 2026-08-07 | v1.2.19 检查、六个 Docker 镜像、GitHub Release 和 Telegram 频道通知全部成功，状态流转为已完成。 |
+
+## NSX-20260807-009
+
+| 字段 | 内容 |
+| --- | --- |
+| 编号 | NSX-20260807-009 |
+| 日期 | 2026-08-07 |
+| 状态 | 已完成 |
+| 模块 | 部署运维/安装；文档；质量复核 |
+| 现象 | 空白服务器仍显示更新、回滚、重启等不可用操作；已安装菜单没有运行状态和实际版本；部分直接命令缺少统一安装前置检查；安装残缺时没有明确修复入口。 |
+| 根因 | 主菜单只根据 `.env` 切换默认选项，所有状态共用一套菜单；运行状态、镜像版本和安装完整性没有独立判断；部分前置检查散落在菜单分发层。 |
+| 实现 | 未安装服务器只显示一键安装和退出；已安装服务器按安装维护、服务管理、证书恢复、账号帮助、危险操作分组，动态显示运行状态、镜像版本和访问地址；安装残缺时默认进入修复；新增 `repair` 命令；服务命令统一校验 `.env` 与 Compose 文件；日志、状态、回滚和卸载的 Docker 检查收回各自函数；修复成功文案和缺失版本标签显示已纠正；README 加入两套主菜单示例。 |
+| 兼容性 | 保持既有菜单编号 `1–12` 和 `ns` 快捷命令；现有配置、数据库、邮件、证书和更新流程不变。 |
+| 测试结果 | Bash 语法检查、ShellCheck、安装脚本全量测试、菜单渲染/范围/分发/状态/版本/残缺安装/前置条件测试、前端 check/build、Go 全量测试和 go vet 均通过。 |
+| 目标版本 | v1.2.19 |
+| 发布状态 | 随 v1.2.19 发布。 |
+
+### 历史
+
+| 时间 | 记录 |
+| --- | --- |
+| 2026-08-07 | 用户确认按安装状态拆分主菜单，并要求写入仓库介绍、复核全部命令逻辑。 |
+| 2026-08-07 | 完成动态菜单、命令前置条件、残缺安装修复入口、README 和自动化回归，状态流转为待验收。 |
+| 2026-08-07 | 随 v1.2.19 完成发布，状态流转为已完成。 |
+
+## NSX-20260807-010
+
+| 字段 | 内容 |
+| --- | --- |
+| 编号 | NSX-20260807-010 |
+| 日期 | 2026-08-07 |
+| 状态 | 已完成 |
+| 模块 | 邮件投递；DKIM；部署运维；质量复核 |
+| 现象 | Gmail 显示 SPF 和 DMARC 通过，但 NewSzxcn 发出的邮件 DKIM 验证失败；同内容的 NodeSeek 对照邮件三项认证均通过。 |
+| 诊断 | NewSzxcn 邮件的 relaxed 正文哈希与 Gmail 收到的 `bh` 精确一致，排除正文传输修改；邮件签名无法由当前 DNS 公钥验证，说明发信时使用了不同私钥。`key not secure` 仅表示 DNSSEC 未验证，TXT 分段也属于正常 DNS 表示。 |
+| 根因 | DKIM 同步任务会覆盖容器内密钥文件，但 Rspamd 已载入的签名密钥不会随文件替换自动更新，域名重建或密钥变化后可能继续使用内存中的旧私钥。 |
+| 实现 | DKIM 同步改为先比较密钥内容；相同密钥不再重复替换，密钥新增或变化后立即重新载入 Rspamd；后台 DNS 检查从“仅判断 DKIM 记录存在”升级为核对实际 `p=` 公钥，明确区分缺失与公钥不一致；新增密钥同步和 DNS 公钥匹配回归，并纳入 CI 与发布检查。 |
+| 兼容性 | 不轮换现有 DKIM 密钥、不修改 DNS；已有数据库、邮件和域名配置保持不变。 |
+| 测试结果 | DKIM 同步专项测试、DNS 公钥匹配测试、Go 全量测试与 vet、安装脚本回归均通过；线上 DKIM 已验收通过。 |
+| 目标版本 | v1.2.19 |
+| 发布状态 | 已随 v1.2.19 发布，线上 DKIM 已验收通过。 |
+
+### 历史
+
+| 时间 | 记录 |
+| --- | --- |
+| 2026-08-07 | 用户提供 Gmail 原始邮件和 NodeSeek 对照邮件，完成正文哈希、签名公钥和认证结果比对。 |
+| 2026-08-07 | 完成 DKIM 密钥热更新修复和专项回归，等待服务器实发验收。 |
+| 2026-08-07 | 修复已随 v1.2.19 发布；保留待验收状态，需升级后确认 Gmail 原始邮件显示 `dkim=pass`。 |
+| 2026-08-08 | 用户确认 DKIM 已通过，状态流转为已完成。 |
+
+## NSX-20260807-011
+
+| 字段 | 内容 |
+| --- | --- |
+| 编号 | NSX-20260807-011 |
+| 日期 | 2026-08-07 |
+| 状态 | 已完成 |
+| 模块 | 后端/通知；验证码识别；质量复核 |
+| 现象 | 爱奇艺邮件的主题和正文均包含验证码 `825534`，Telegram 通知却没有独立验证码区域和“复制验证码”按钮。 |
+| 根因 | 正文开头的收件地址 `iqiyi02@newszxcn.com` 被拆成 `iqiyi02`、`newszxcn` 两个候选；它们与主题中的“验证码”距离较近，触发多候选歧义保护后返回空结果。 |
+| 实现 | 验证码评分前排除邮箱地址和 HTTP/HTTPS 链接范围内的字母数字片段，保留真实正文与主题候选；新增爱奇艺原始场景回归，同时检查独立验证码区域和复制按钮。 |
+| 测试结果 | 爱奇艺原始场景、Gate 验证码与链接、Telegram 消息预算专项测试及 Go 全量测试均通过。 |
+| 目标版本 | v1.2.19 |
+| 发布状态 | 随 v1.2.19 发布。 |
+
+### 历史
+
+| 时间 | 记录 |
+| --- | --- |
+| 2026-08-07 | 用户提供 Telegram 实际通知截图，完成邮箱地址候选冲突复现。 |
+| 2026-08-07 | 修复邮箱和链接候选排除逻辑，加入爱奇艺验证码专项回归。 |
+| 2026-08-07 | 随 v1.2.19 完成发布，状态流转为已完成。 |
+
+## NSX-20260807-012
+
+| 字段 | 内容 |
+| --- | --- |
+| 编号 | NSX-20260807-012 |
+| 日期 | 2026-08-07 |
+| 状态 | 已完成 |
+| 模块 | 前端/UI；域名管理；质量复核 |
+| 现象 | DNS 记录顶部“复制”会得到 `TXT newszxcn.com v=spf1 mx -all`，不能直接粘贴到域名服务商的主机记录和记录值输入框。 |
+| 实现 | 删除整行复制；每条记录明确展示记录类型、主机记录、记录值和 TTL；主机记录与记录值分别提供图标复制和对应成功提示，TTL 仅展示。 |
+| 测试结果 | 前端 check/build 通过；本地页面确认 SPF 主机记录和记录值分别复制为 `lanqin.local` 与 `v=spf1 mx -all`，DKIM 长记录正常换行且弹窗没有横向溢出。 |
+| 目标版本 | v1.2.19 |
+| 发布状态 | 随 v1.2.19 发布。 |
+
+### 历史
+
+| 时间 | 记录 |
+| --- | --- |
+| 2026-08-07 | 用户提供 DNS 弹窗截图并指出整行复制无法直接用于 DNS 面板。 |
+| 2026-08-07 | 完成主机记录和记录值分离复制。 |
+| 2026-08-07 | 随 v1.2.19 完成发布，状态流转为已完成。 |
+
+## NSX-20260807-013
+
+| 字段 | 内容 |
+| --- | --- |
+| 编号 | NSX-20260807-013 |
+| 日期 | 2026-08-07 |
+| 状态 | 已完成 |
+| 模块 | 邮件核心；前端/标签；数据迁移；质量复核 |
+| 需求 | 邮箱默认增加个人、家人、朋友、工作、重要五个常用标签，并按名称使用容易辨认的颜色。 |
+| 实现 | 新邮箱创建时由后端事务生成五个标签；已有邮箱升级时一次性补齐；固定顺序为个人、家人、朋友、工作、重要，颜色依次为绿色、玫红、青色、蓝色、橙色；用户后续删除标签不会在重启时恢复；“全部邮箱”按名称合并同名标签并汇总数量，点击或导出时覆盖用户名下所有邮箱。 |
+| 兼容性 | 使用 `INSERT OR IGNORE` 保留已有同名标签及其颜色和邮件关联；不修改用户自建标签。 |
+| 测试结果 | 新邮箱创建、旧邮箱补齐、删除后不重建、多邮箱同名汇总与跨邮箱筛选专项测试，以及 Go 全量测试和 vet 均通过；页面确认五个标签各显示一次、顺序正确，颜色与侧栏宽度正确且无越界。 |
+| 目标版本 | v1.2.19 |
+| 发布状态 | 随 v1.2.19 发布。 |
+
+### 历史
+
+| 时间 | 记录 |
+| --- | --- |
+| 2026-08-07 | 用户提供标签侧栏参考并指定五个默认标签。 |
+| 2026-08-07 | 完成新邮箱默认生成、已有邮箱一次性补齐、固定排序和颜色回归；页面复核时发现全部邮箱重复显示，继续完成同名汇总、跨邮箱筛选与导出回归。 |
+| 2026-08-07 | 随 v1.2.19 完成发布，状态流转为已完成。 |

install.sh

@@ -29,14 +29,16 @@ NewSzxcn Email 管理命令
   menu        显示安装与运维菜单
   install     首次安装；已有安装会先完整备份再重新安装
   update      备份数据库并更新到最新版
+  repair      检查并修复现有安装
   status      查看容器与健康状态
   logs        持续查看运行日志
   restart     重启服务并重载 Nginx
   certificate 申请或续期自动模式的 SSL 证书
   rollback    回滚到上次更新前版本
-  guide       显示并更新 NewSzxcn 邮箱指南
+  guide       显示并更新邮箱后台配置指南
   credentials 查看管理员登录信息和记录密码
   reset-password 重置管理员统一登录密码（含名下邮箱）
+  reset-2fa   应急关闭唯一管理员双因素认证
   uninstall   停止并移除容器，保留邮件与配置
 EOF
 }
@@ -201,6 +203,18 @@ env_value() {
   sed -n "s/^${key}=//p" "${INSTALL_DIR}/.env" | tail -n 1
 }
 
+installation_configured() {
+  [[ -f "${INSTALL_DIR}/.env" ]]
+}
+
+installation_complete() {
+  installation_configured && [[ -f "${INSTALL_DIR}/docker-compose.yml" ]]
+}
+
+require_installation() {
+  installation_complete || fail "尚未完成安装，请先运行 newszxcn-email install；如果配置残缺，请运行 newszxcn-email repair。"
+}
+
 prompt_value() {
   local variable="$1" prompt="$2" default_value="$3" secret="${4:-false}"
   local value="${!variable:-}"
@@ -266,6 +280,10 @@ prompt_text() {
   fi
 }
 
+lowercase() {
+  printf '%s' "$1" | tr '[:upper:]' '[:lower:]'
+}
+
 valid_hostname() {
   local hostname="$1" label tld
   local -a labels
@@ -279,6 +297,110 @@ valid_hostname() {
   [[ "${tld}" =~ ^[A-Za-z]{2,63}$ ]]
 }
 
+valid_mail_local_part() {
+  local value="$1"
+  [[ ${#value} -ge 1 && ${#value} -le 64 && "${value}" =~ ^[A-Za-z0-9][A-Za-z0-9._%+-]*$ ]]
+}
+
+valid_email_address() {
+  local value="$1" local_part domain_part
+  [[ "${value}" == *@* ]] || return 1
+  local_part="${value%@*}"
+  domain_part="${value#*@}"
+  valid_mail_local_part "${local_part}" && valid_hostname "${domain_part}"
+}
+
+suggest_mail_domain() {
+  local hostname="$1" first rest
+  hostname="$(lowercase "${hostname}")"
+  first="${hostname%%.*}"
+  rest="${hostname#*.}"
+  if [[ "${hostname}" == *.* && "${rest}" == *.* && "${first}" =~ ^(mail|smtp|imap|pop|pop3|mx|mx[0-9]+|webmail)$ ]]; then
+    printf '%s' "${rest}"
+    return
+  fi
+  printf '%s' "${hostname}"
+}
+
+prompt_mail_domain() {
+  local hostname="$1" suggestion value admin_email
+  admin_email="${LANQIN_ADMIN_EMAIL:-}"
+  if [[ -z "${LANQIN_MAIL_DOMAIN:-}" && -n "${admin_email}" && "${admin_email}" == *@* ]]; then
+    LANQIN_MAIL_DOMAIN="${admin_email#*@}"
+  fi
+  suggestion="$(suggest_mail_domain "${hostname}")"
+  value="${LANQIN_MAIL_DOMAIN:-}"
+  if [[ -z "${value}" ]] && has_tty; then
+    prompt_text "[检测] 邮件服务器域名：${hostname}\n[检测] 邮箱地址域名：@${suggestion}\n"
+    read -r -p "邮箱地址域名 [${suggestion}]（直接回车确认）: " value </dev/tty
+  fi
+  value="${value:-${suggestion}}"
+  if [[ -z "${LANQIN_MAIL_DOMAIN:-}" && -z "${admin_email}" ]] && ! has_tty; then
+    fail "非交互安装/更新必须设置 LANQIN_MAIL_DOMAIN 或 LANQIN_ADMIN_EMAIL，不能自动猜测邮箱地址域名。"
+  fi
+  value="$(lowercase "${value}")"
+  valid_hostname "${value}" || fail "邮箱地址域名格式不正确。"
+  printf '%s' "${value}"
+}
+
+prompt_admin_email() {
+  local mail_domain="$1" choice prefix email domain_part
+  email="${LANQIN_ADMIN_EMAIL:-}"
+  if [[ -n "${email}" ]]; then
+    email="$(lowercase "${email}")"
+    valid_email_address "${email}" || fail "管理员邮箱格式不正确。"
+    domain_part="${email#*@}"
+    [[ "${domain_part}" == "${mail_domain}" ]] || fail "管理员邮箱域名必须与邮箱地址域名一致。"
+    printf '%s' "${email}"
+    return
+  fi
+  if has_tty; then
+    prompt_text "\n检测到邮箱地址域名：@${mail_domain}\n创建管理员邮箱 [1]：\n1. 使用默认前缀 admin\n2. 自定义管理员邮箱前缀\n"
+    choice="$(prompt_choice LANQIN_ADMIN_EMAIL_MODE "请选择 [1]: " "1" "2")"
+    if [[ "${choice}" == "2" ]]; then
+      prefix="$(prompt_value LANQIN_ADMIN_PREFIX "管理员邮箱账号前缀" "admin")"
+    else
+      prefix="admin"
+    fi
+  else
+    prefix="${LANQIN_ADMIN_PREFIX:-admin}"
+  fi
+  valid_mail_local_part "${prefix}" || fail "管理员邮箱前缀格式不正确。"
+  email="$(lowercase "${prefix}")@${mail_domain}"
+  prompt_text "[提示] 将创建管理员邮箱：${email}\n"
+  printf '%s' "${email}"
+}
+
+ensure_admin_email_config() {
+  [[ -f "${INSTALL_DIR}/.env" ]] || return 0
+  local hostname existing_mail_domain existing_admin_email existing_admin_prefix mail_domain admin_email admin_prefix
+  hostname="$(env_value LANQIN_PUBLIC_HOSTNAME || true)"
+  existing_mail_domain="${LANQIN_MAIL_DOMAIN:-$(env_value LANQIN_MAIL_DOMAIN || true)}"
+  existing_admin_email="${LANQIN_ADMIN_EMAIL:-$(env_value LANQIN_ADMIN_EMAIL || true)}"
+  existing_admin_prefix="${LANQIN_ADMIN_PREFIX:-$(env_value LANQIN_ADMIN_USERNAME || true)}"
+  if [[ -z "${hostname}" ]]; then
+    if [[ -n "${existing_mail_domain}" ]]; then
+      hostname="${existing_mail_domain}"
+    elif [[ -n "${existing_admin_email}" && "${existing_admin_email}" == *@* ]]; then
+      hostname="${existing_admin_email#*@}"
+    else
+      fail "缺少 LANQIN_PUBLIC_HOSTNAME，无法确认管理员邮箱域名。"
+    fi
+  fi
+  valid_hostname "${hostname}" || fail "邮件服务器域名配置无效，无法确认管理员邮箱域名。"
+  LANQIN_MAIL_DOMAIN="${existing_mail_domain}"
+  LANQIN_ADMIN_EMAIL="${existing_admin_email}"
+  mail_domain="$(prompt_mail_domain "${hostname}")"
+  LANQIN_ADMIN_EMAIL="${existing_admin_email}"
+  LANQIN_ADMIN_PREFIX="${existing_admin_prefix:-admin}"
+  admin_email="$(prompt_admin_email "${mail_domain}")"
+  admin_prefix="${admin_email%@*}"
+  set_env LANQIN_MAIL_DOMAIN "${mail_domain}"
+  set_env LANQIN_ADMIN_EMAIL "${admin_email}"
+  set_env LANQIN_ADMIN_USERNAME "${admin_prefix}"
+  chmod 0600 "${INSTALL_DIR}/.env"
+}
+
 prompt_admin_password() {
   local password="${LANQIN_ADMIN_PASSWORD:-}" confirm=""
   local safe_password_re='^[A-Za-z0-9][A-Za-z0-9._!@#%+,=:;?*/()^-]*$'
@@ -371,15 +493,17 @@ configure_first_install() {
     return
   fi
 
-  local firewall_mode hostname admin_username admin_password web_mode public_url update_token
+  local firewall_mode hostname mail_domain admin_email admin_prefix admin_password web_mode public_url update_token
   prompt_text '\n防火墙配置 [1]：\n1. 自动添加邮局必要端口规则（推荐）\n2. 保留现有防火墙，由用户自行配置\n'
   firewall_mode="$(prompt_choice LANQIN_INSTALL_FIREWALL_MODE "请选择 [1]: " "1" "2")"
 
   hostname="$(prompt_value LANQIN_PUBLIC_HOSTNAME "邮件服务器域名，例如 mail.example.com" "")"
   valid_hostname "${hostname}" || fail "邮件服务器域名格式不正确。"
 
-  admin_username="$(prompt_value LANQIN_ADMIN_USERNAME "管理员用户名" "admin")"
-  [[ "${admin_username}" =~ ^[A-Za-z0-9][A-Za-z0-9._%+-]{1,79}$ ]] || fail "管理员用户名需为 2-80 位且不能包含 @。"
+  mail_domain="$(prompt_mail_domain "${hostname}")"
+  LANQIN_MAIL_DOMAIN="${mail_domain}"
+  admin_email="$(prompt_admin_email "${mail_domain}")"
+  admin_prefix="${admin_email%@*}"
   admin_password="$(prompt_admin_password)"
 
   prompt_text '\nWeb 部署方式 [1]：\n1. 自动配置 Nginx + SSL\n2. 宝塔/已有 Nginx 反代\n3. 仅 HTTP 测试\n'
@@ -395,7 +519,9 @@ configure_first_install() {
   set_env LANQIN_INSTALL_FIREWALL_MODE "${firewall_mode}"
   set_env LANQIN_PUBLIC_HOSTNAME "${hostname}"
   set_env LANQIN_PUBLIC_BASE_URL "${public_url}"
-  set_env LANQIN_ADMIN_USERNAME "${admin_username}"
+  set_env LANQIN_MAIL_DOMAIN "${mail_domain}"
+  set_env LANQIN_ADMIN_EMAIL "${admin_email}"
+  set_env LANQIN_ADMIN_USERNAME "${admin_prefix}"
   set_env LANQIN_ADMIN_PASSWORD "${admin_password}"
   set_env LANQIN_INSTALL_WEB_MODE "${web_mode}"
   set_env LANQIN_UPDATE_TOKEN "${update_token}"
@@ -863,42 +989,67 @@ restore_update_snapshot() {
 }
 
 do_repair_install() {
+  installation_configured || fail "尚未安装，无法执行修复。"
+  local snapshot_created="false"
   ensure_docker
-  create_update_snapshot || fail "修复前备份失败，未修改现有安装。"
+  if [[ -f "${INSTALL_DIR}/docker-compose.yml" ]]; then
+    create_update_snapshot || fail "修复前备份失败，未修改现有安装。"
+    snapshot_created="true"
+  else
+    warn "安装缺少 docker-compose.yml，将保留现有配置和数据并重新生成运行文件。"
+  fi
   stage_assets
   clear_runtime_image_pin
-  if ! apply_staged_assets || ! ensure_update_token || ! configure_runtime_bindings; then
-    restore_update_snapshot "" false || true
-    fail "修复准备失败，已恢复原安装。"
+  if ! apply_staged_assets || ! ensure_update_token || ! ensure_admin_email_config || ! configure_runtime_bindings; then
+    if [[ "${snapshot_created}" == "true" ]]; then
+      restore_update_snapshot "" false || true
+      fail "修复准备失败，已恢复原安装。"
+    fi
+    fail "修复准备失败，原配置和数据未删除。"
   fi
   if ! (configure_firewall && prepare_directories); then
-    restore_update_snapshot "" false || true
-    fail "修复环境准备失败，已恢复原安装。"
+    if [[ "${snapshot_created}" == "true" ]]; then
+      restore_update_snapshot "" false || true
+      fail "修复环境准备失败，已恢复原安装。"
+    fi
+    fail "修复环境准备失败，原配置和数据未删除。"
   fi
   log "正在拉取并修复 NewSzxcn Email 服务..."
   if ! compose pull; then
-    restore_update_snapshot "" false || true
-    fail "修复镜像拉取失败，已恢复原安装。"
+    if [[ "${snapshot_created}" == "true" ]]; then
+      restore_update_snapshot "" false || true
+      fail "修复镜像拉取失败，已恢复原安装。"
+    fi
+    fail "修复镜像拉取失败，原配置和数据未删除。"
   fi
   log "正在启动服务..."
   if ! compose up -d --remove-orphans; then
-    warn "修复后容器启动失败，正在自动回滚。"
-    restore_update_snapshot || fail "修复失败，且自动恢复未完成，请使用回滚快照手动恢复。"
-    fail "修复失败，已恢复到修复前版本。"
+    if [[ "${snapshot_created}" == "true" ]]; then
+      warn "修复后容器启动失败，正在自动回滚。"
+      restore_update_snapshot || fail "修复失败，且自动恢复未完成，请使用回滚快照手动恢复。"
+      fail "修复失败，已恢复到修复前版本。"
+    fi
+    fail "修复后容器启动失败，请查看实时日志；原配置和数据未删除。"
   fi
   if ! wait_for_health 90; then
-    warn "修复后健康检查失败，正在自动回滚。"
-    restore_update_snapshot || fail "修复失败，且自动恢复未完成，请使用回滚快照手动恢复。"
-    fail "修复失败，已恢复到修复前版本。"
+    if [[ "${snapshot_created}" == "true" ]]; then
+      warn "修复后健康检查失败，正在自动回滚。"
+      restore_update_snapshot || fail "修复失败，且自动恢复未完成，请使用回滚快照手动恢复。"
+      fail "修复失败，已恢复到修复前版本。"
+    fi
+    fail "修复后健康检查失败，请查看实时日志；原配置和数据未删除。"
   fi
   if ! (configure_web_mode); then
-    restore_update_snapshot || fail "Web 配置失败，且自动恢复未完成，请使用回滚快照手动恢复。"
-    fail "Web 配置失败，已恢复到修复前版本。"
+    if [[ "${snapshot_created}" == "true" ]]; then
+      restore_update_snapshot || fail "Web 配置失败，且自动恢复未完成，请使用回滚快照手动恢复。"
+      fail "Web 配置失败，已恢复到修复前版本。"
+    fi
+    fail "Web 配置修复失败，原配置和数据未删除。"
   fi
-  generate_guide >/dev/null || warn "安装成功，但邮箱指南生成失败，可稍后执行 newszxcn-email guide 重试。"
-  success "安装完成：$(env_value LANQIN_PUBLIC_BASE_URL)"
+  generate_guide >/dev/null || warn "修复成功，但邮箱后台配置指南生成失败，可稍后执行 newszxcn-email guide 重试。"
+  success "修复完成：$(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。"
-  warn "输入 ns 可打开管理菜单；输入 newszxcn-email guide 可查看邮箱指南。"
+  warn "输入 ns 可打开管理菜单；输入 newszxcn-email guide 可查看邮箱后台配置指南。"
 }
 
 do_install() {
@@ -920,19 +1071,19 @@ do_install() {
   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。"
   configure_web_mode
-  generate_guide >/dev/null || warn "安装成功，但邮箱指南生成失败，可稍后执行 newszxcn-email guide 重试。"
+  generate_guide >/dev/null || warn "安装成功，但邮箱后台配置指南生成失败，可稍后执行 newszxcn-email guide 重试。"
   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。"
-  warn "输入 ns 可打开管理菜单；输入 newszxcn-email guide 可查看邮箱指南。"
+  warn "输入 ns 可打开管理菜单；输入 newszxcn-email guide 可查看邮箱后台配置指南。"
 }
 
 do_update() {
-  [[ -f "${INSTALL_DIR}/.env" ]] || fail "尚未安装，请先执行 install。"
+  require_installation
   ensure_docker
   create_update_snapshot || fail "更新前备份失败，未修改现有安装。"
   stage_assets
   clear_runtime_image_pin
-  if ! apply_staged_assets || ! ensure_update_token; then
+  if ! apply_staged_assets || ! ensure_update_token || ! ensure_admin_email_config; then
     restore_update_snapshot "" false || true
     fail "更新文件替换失败，已恢复原安装。"
   fi
@@ -952,11 +1103,12 @@ do_update() {
     fail "更新失败，已恢复到更新前版本。"
   fi
   ensure_cli_alias
-  generate_guide >/dev/null || warn "更新成功，但邮箱指南生成失败，可稍后执行 newszxcn-email guide 重试。"
+  generate_guide >/dev/null || warn "更新成功，但邮箱后台配置指南生成失败，可稍后执行 newszxcn-email guide 重试。"
   success "系统已更新，配置、邮件、证书和数据库均已保留。"
 }
 
 do_rollback() {
+  require_installation
   [[ -f "${ROLLBACK_POINTER}" ]] || fail "没有可用的完整回滚快照。"
   local confirm="${LANQIN_ROLLBACK_CONFIRM:-}" image timestamp emergency_backup
   if [[ -z "${confirm}" ]] && has_tty; then
@@ -974,7 +1126,7 @@ do_rollback() {
 }
 
 reload_services() {
-  [[ -f "${INSTALL_DIR}/docker-compose.yml" ]] || return 0
+  require_installation
   ensure_docker
   compose restart lanqin-email >/dev/null
   if [[ -f "${NGINX_CONFIG}" ]]; then
@@ -989,24 +1141,25 @@ do_restart() {
 }
 
 do_certificate() {
-  [[ -f "${INSTALL_DIR}/.env" ]] || fail "尚未安装。"
+  require_installation
   [[ "$(env_value LANQIN_INSTALL_WEB_MODE || true)" == "1" ]] || fail "只有自动 Nginx + SSL 模式可使用此命令。"
   ensure_nginx
   write_nginx_http_config
   install_certificate
   write_nginx_https_config
   reload_services
-  generate_guide >/dev/null || warn "证书已应用，但邮箱指南生成失败，可稍后执行 newszxcn-email guide 重试。"
+  generate_guide >/dev/null || warn "证书已应用，但邮箱后台配置指南生成失败，可稍后执行 newszxcn-email guide 重试。"
   success "SSL 证书已安装并应用。"
 }
 
 generate_guide() {
   [[ -f "${INSTALL_DIR}/.env" ]] || return 1
-  local public_url admin_url hostname admin_username certificate_expiry="未安装" renewal_status="未开启" next_renewal="等待 acme.sh 生成续期计划"
+  ensure_admin_email_config
+  local public_url admin_url hostname admin_email certificate_expiry="未安装" renewal_status="未开启" next_renewal="等待 acme.sh 生成续期计划"
   local acme_info="" tmp
   public_url="$(env_value LANQIN_PUBLIC_BASE_URL || true)"
   hostname="$(env_value LANQIN_PUBLIC_HOSTNAME || true)"
-  admin_username="$(env_value LANQIN_ADMIN_USERNAME || true)"
+  admin_email="$(env_value LANQIN_ADMIN_EMAIL || true)"
   public_url="${public_url:-http://${hostname}}"
   admin_url="${public_url%/}/admin"
 
@@ -1028,14 +1181,14 @@ generate_guide() {
   tmp="$(mktemp)"
   cat > "${tmp}" <<EOF
 ==================================================
- NewSzxcn 邮箱指南
+ NewSzxcn 邮箱后台配置指南
 ==================================================
 
 【安装信息】
 
 邮箱前台：${public_url}
 管理后台：${admin_url}
-管理员账号：${admin_username:-admin}
+管理员邮箱：${admin_email:-未记录}
 管理员密码：仅在安装完成时显示；修改后请使用新密码
 SSL 证书：有效期至 ${certificate_expiry}
 自动续期：${renewal_status}
@@ -1087,15 +1240,16 @@ EOF
 }
 
 do_guide() {
-  generate_guide || fail "尚未安装，无法生成邮箱指南。"
+  generate_guide || fail "尚未安装，无法生成邮箱后台配置指南。"
   cat "${GUIDE_FILE}"
   success "指南已更新并保存到 ${GUIDE_FILE}。"
 }
 
 do_show_admin_credentials() {
   [[ -f "${INSTALL_DIR}/.env" ]] || fail "尚未安装。"
-  local username password public_url
-  username="$(env_value LANQIN_ADMIN_USERNAME || true)"
+  ensure_admin_email_config
+  local admin_email password public_url
+  admin_email="$(env_value LANQIN_ADMIN_EMAIL || true)"
   password="$(env_value LANQIN_ADMIN_PASSWORD || true)"
   public_url="$(env_value LANQIN_PUBLIC_BASE_URL || true)"
   cat <<EOF
@@ -1104,7 +1258,7 @@ do_show_admin_credentials() {
  NewSzxcn 管理员登录信息
 ==================================================
 登录地址：${public_url:-未记录}
-管理员用户名：${username:-admin}
+管理员邮箱：${admin_email:-未记录}
 记录密码：${password:-未记录}
 ==================================================
 EOF
@@ -1120,14 +1274,14 @@ generate_admin_password_hash() {
 }
 
 do_reset_admin_password() {
-  [[ -f "${INSTALL_DIR}/.env" ]] || fail "尚未安装。"
-  local username password user_id hash image timestamp backup env_backup result user_changes mailbox_changes
+  require_installation
+  local admin_email password user_id hash image timestamp backup env_backup result user_changes mailbox_changes
   ensure_docker
-  username="$(env_value LANQIN_ADMIN_USERNAME || true)"
-  username="${username:-admin}"
-  [[ "${username}" =~ ^[A-Za-z0-9][A-Za-z0-9._%+-]{1,79}$ ]] || fail "管理员用户名配置无效，无法安全重置。"
-  user_id="$(compose exec -T lanqin-email sqlite3 -batch -noheader /data/lanqin.db "SELECT id FROM users WHERE login_name='${username}' AND role='admin' LIMIT 1;" | tr -d '\r\n')"
-  [[ "${user_id}" =~ ^[A-Za-z0-9_-]+$ ]] || fail "没有找到管理员账号 ${username}。"
+  ensure_admin_email_config
+  admin_email="$(env_value LANQIN_ADMIN_EMAIL || true)"
+  valid_email_address "${admin_email}" || fail "管理员邮箱配置无效，无法安全重置。"
+  user_id="$(compose exec -T lanqin-email sqlite3 -batch -noheader /data/lanqin.db "SELECT id FROM users WHERE email='${admin_email}' AND role='admin' LIMIT 1;" | tr -d '\r\n')"
+  [[ "${user_id}" =~ ^[A-Za-z0-9_-]+$ ]] || fail "没有找到管理员邮箱 ${admin_email}。"
   password="$(prompt_reset_password)"
   hash="$(generate_admin_password_hash "${password}")" || fail "无法生成安全密码哈希，管理员密码未修改。"
   image="$(current_image_id || true)"
@@ -1143,7 +1297,7 @@ do_reset_admin_password() {
     fail "管理员密码记录更新失败，数据库未修改。"
   fi
   chmod 0600 "${INSTALL_DIR}/.env"
-  if ! result="$(compose exec -T lanqin-email sqlite3 -batch -noheader /data/lanqin.db "BEGIN IMMEDIATE; UPDATE users SET password_hash='${hash}', updated_at=strftime('%Y-%m-%dT%H:%M:%fZ','now') WHERE id='${user_id}' AND role='admin'; SELECT 'user=' || changes(); UPDATE mailboxes SET password_hash='${hash}', updated_at=strftime('%Y-%m-%dT%H:%M:%fZ','now') WHERE user_id='${user_id}' AND EXISTS (SELECT 1 FROM users WHERE id='${user_id}' AND role='admin'); SELECT 'mailboxes=' || changes(); COMMIT;" | tr -d '\r')"; then
+  if ! result="$(compose exec -T lanqin-email sqlite3 -batch -noheader /data/lanqin.db "BEGIN IMMEDIATE; UPDATE users SET password_hash='${hash}', updated_at=strftime('%Y-%m-%dT%H:%M:%fZ','now') WHERE id='${user_id}' AND email='${admin_email}' AND role='admin'; SELECT 'user=' || changes(); UPDATE mailboxes SET password_hash='${hash}', updated_at=strftime('%Y-%m-%dT%H:%M:%fZ','now') WHERE user_id='${user_id}' AND EXISTS (SELECT 1 FROM users WHERE id='${user_id}' AND email='${admin_email}' AND role='admin'); SELECT 'mailboxes=' || changes(); COMMIT;" | tr -d '\r')"; then
     install -m 0600 "${env_backup}" "${INSTALL_DIR}/.env"
     rm -f "${env_backup}"
     fail "管理员密码写入失败，已恢复原密码记录。"
@@ -1156,15 +1310,45 @@ do_reset_admin_password() {
     fail "管理员账号不存在或身份已变化，密码未修改；已恢复原密码记录。"
   fi
   rm -f "${env_backup}"
-  success "管理员 ${username} 的统一登录密码已重置。"
+  success "管理员 ${admin_email} 的统一登录密码已重置。"
   printf '新密码：%s\n' "${password}"
   log "重置前数据库备份：${backup}"
   log "已同步 ${mailbox_changes} 个管理员邮箱的 SMTP/IMAP 密码。"
   warn "此次操作只修改管理员账号及其名下邮箱，不会修改普通用户或其邮箱密码。"
 }
 
+do_reset_admin_two_factor() {
+  require_installation
+  local admin_email user_id image timestamp backup result user_changes recovery_changes challenge_changes
+  ensure_docker
+  ensure_admin_email_config
+  admin_email="$(env_value LANQIN_ADMIN_EMAIL || true)"
+  valid_email_address "${admin_email}" || fail "管理员邮箱配置无效，无法安全关闭双因素认证。"
+  user_id="$(compose exec -T lanqin-email sqlite3 -batch -noheader /data/lanqin.db "SELECT id FROM users WHERE email='${admin_email}' AND role='admin' LIMIT 1;" | tr -d '\r\n')"
+  [[ "${user_id}" =~ ^[A-Za-z0-9_-]+$ ]] || fail "没有找到管理员邮箱 ${admin_email}。"
+  image="$(current_image_id || true)"
+  [[ -n "${image}" ]] || fail "无法确定当前镜像，管理员双因素认证未修改。"
+  timestamp="$(date -u +%Y%m%dT%H%M%SZ)"
+  backup="${INSTALL_DIR}/data/backups/2fa-reset-${timestamp}.db"
+  backup_database "${backup}" "${image}" || fail "数据库备份失败，管理员双因素认证未修改。"
+  if ! result="$(compose exec -T lanqin-email sqlite3 -batch -noheader /data/lanqin.db "BEGIN IMMEDIATE; UPDATE users SET two_factor_secret='', two_factor_enabled=0, updated_at=strftime('%Y-%m-%dT%H:%M:%fZ','now') WHERE id='${user_id}' AND email='${admin_email}' AND role='admin'; SELECT 'user=' || changes(); DELETE FROM two_factor_recovery_codes WHERE user_id='${user_id}'; SELECT 'recovery=' || changes(); DELETE FROM login_challenges WHERE user_id='${user_id}'; SELECT 'challenges=' || changes(); COMMIT;" | tr -d '\r')"; then
+    fail "管理员双因素认证关闭失败，数据库未确认修改。"
+  fi
+  user_changes="$(printf '%s\n' "${result}" | sed -n 's/^user=//p' | tail -n 1)"
+  recovery_changes="$(printf '%s\n' "${result}" | sed -n 's/^recovery=//p' | tail -n 1)"
+  challenge_changes="$(printf '%s\n' "${result}" | sed -n 's/^challenges=//p' | tail -n 1)"
+  if [[ "${user_changes}" != "1" || ! "${recovery_changes}" =~ ^[0-9]+$ || ! "${challenge_changes}" =~ ^[0-9]+$ ]]; then
+    fail "管理员账号不存在或身份已变化，双因素认证未确认关闭。"
+  fi
+  success "管理员 ${admin_email} 的双因素认证已关闭。"
+  log "重置前数据库备份：${backup}"
+  log "已删除 ${recovery_changes} 个恢复码和 ${challenge_changes} 个登录挑战。"
+  warn "请管理员登录后重新绑定双因素认证并妥善保存新的恢复码。"
+}
+
 do_status() {
-  [[ -f "${INSTALL_DIR}/docker-compose.yml" ]] || fail "尚未安装。"
+  require_installation
+  ensure_docker
   compose ps
   if wait_for_health 1; then
     success "Web 与 API 健康检查正常。"
@@ -1173,8 +1357,15 @@ do_status() {
   fi
 }
 
+do_logs() {
+  require_installation
+  ensure_docker
+  compose logs -f --tail=200 lanqin-email updater
+}
+
 do_uninstall() {
-  [[ -f "${INSTALL_DIR}/docker-compose.yml" ]] || fail "尚未安装。"
+  require_installation
+  ensure_docker
   local confirm="${LANQIN_UNINSTALL_CONFIRM:-}" remove_renewal="${LANQIN_REMOVE_CERT_RENEWAL:-}" hostname
   if [[ -z "${confirm}" ]] && has_tty; then
     read -r -p "确认停止并卸载服务吗？邮件和配置将保留。[y/N]: " confirm </dev/tty
@@ -1273,58 +1464,112 @@ do_backup_reinstall() {
   fail "重新安装失败，旧安装已自动恢复。失败的新安装保存在 ${failed_dir}。"
 }
 
-do_menu() {
-  local installed="false" default_choice="1" public_url="" choice
-  if [[ -f "${INSTALL_DIR}/.env" ]]; then
-    installed="true"
-    default_choice="2"
-    public_url="$(env_value LANQIN_PUBLIC_BASE_URL || true)"
+menu_service_status() {
+  local container_id
+  if ! installation_complete; then
+    printf '安装不完整'
+    return
   fi
-
-  prompt_text '\n==================================================\n'
-  prompt_text ' NewSzxcn Email 一键安装与管理\n'
-  prompt_text '==================================================\n'
-  if [[ "${installed}" == "true" ]]; then
-    prompt_text " 状态：已安装\n 路径：${INSTALL_DIR}\n"
-    [[ -n "${public_url}" ]] && prompt_text " 地址：${public_url}\n"
+  if ! command -v docker >/dev/null 2>&1 || ! docker compose version >/dev/null 2>&1; then
+    printf '状态未知'
+    return
+  fi
+  container_id="$(compose ps -q lanqin-email 2>/dev/null | head -n 1 || true)"
+  if [[ -n "${container_id}" ]] && [[ "$(docker inspect --format '{{.State.Running}}' "${container_id}" 2>/dev/null || true)" == "true" ]]; then
+    printf '运行中'
   else
-    prompt_text ' 状态：未安装\n'
+    printf '已停止'
   fi
-  prompt_text '--------------------------------------------------\n'
-  prompt_text ' 1. 安装 / 重新安装（完整备份，失败自动恢复）\n'
-  prompt_text ' 2. 更新系统（数据库备份，失败自动回滚）\n'
-  prompt_text ' 3. 检查并修复现有安装\n'
-  prompt_text ' 4. 查看运行状态\n'
-  prompt_text ' 5. 重启服务\n'
-  prompt_text ' 6. 查看实时日志\n'
-  prompt_text ' 7. 申请、检查或续期 SSL 证书\n'
-  prompt_text ' 8. 回滚到上次更新前版本\n'
-  prompt_text ' 9. NewSzxcn 邮箱指南\n'
-  prompt_text ' 10. 查看管理员登录信息\n'
-  prompt_text ' 11. 重置管理员统一登录密码\n'
-  prompt_text ' 12. 卸载服务（保留数据）\n'
-  prompt_text ' 0. 退出\n'
+}
+
+menu_installed_version() {
+  local image version
+  if ! installation_complete || ! command -v docker >/dev/null 2>&1; then
+    printf '未知'
+    return
+  fi
+  image="$(current_image_id 2>/dev/null || true)"
+  if [[ -n "${image}" ]]; then
+    version="$(docker image inspect --format '{{index .Config.Labels "org.opencontainers.image.version"}}' "${image}" 2>/dev/null || true)"
+  fi
+  [[ "${version:-}" == "<no value>" ]] && version=""
+  printf '%s' "${version:-未知}"
+}
+
+render_uninstalled_menu() {
+  prompt_text '\n==================================================\n'
+  prompt_text '          NewSzxcn Email 管理面板\n'
   prompt_text '==================================================\n'
+  prompt_text '状态：尚未安装\n'
+  prompt_text '--------------------------------------------------\n'
+  prompt_text '1. 一键安装 NewSzxcn Email\n'
+  prompt_text '0. 退出\n'
+  prompt_text '==================================================\n'
+}
 
-  choice="$(prompt_menu_choice "${default_choice}" "12")"
-  if [[ "${choice}" != "0" && "${choice}" != "1" && "${installed}" != "true" ]]; then
-    fail "尚未安装，请先选择 1。"
+render_installed_menu() {
+  local status="$1" version="$2" public_url="$3"
+  prompt_text '\n==================================================\n'
+  prompt_text '          NewSzxcn Email 管理面板\n'
+  prompt_text '==================================================\n'
+  prompt_text "状态：${status}\n"
+  prompt_text "版本：${version}\n"
+  prompt_text "地址：${public_url:-未配置}\n"
+  prompt_text '--------------------------------------------------\n'
+  prompt_text '安装与维护\n'
+  prompt_text '1. 重新安装（完整备份，失败自动恢复）\n'
+  prompt_text '2. 更新系统（自动备份，失败自动回滚）\n'
+  prompt_text '3. 检查并修复现有安装\n\n'
+  prompt_text '服务管理\n'
+  prompt_text '4. 查看运行状态\n'
+  prompt_text '5. 重启服务\n'
+  prompt_text '6. 查看实时日志\n\n'
+  prompt_text '证书与恢复\n'
+  prompt_text '7. 管理 SSL 证书\n'
+  prompt_text '8. 回滚到上次更新前版本\n\n'
+  prompt_text '账号与帮助\n'
+  prompt_text '9. 邮箱后台配置指南\n'
+  prompt_text '10. 查看管理员登录信息\n'
+  prompt_text '11. 重置管理员登录密码\n\n'
+  prompt_text '危险操作\n'
+  prompt_text '12. 卸载服务（保留数据）\n\n'
+  prompt_text '0. 退出\n'
+  prompt_text '==================================================\n'
+}
+
+do_menu() {
+  local default_choice="2" public_url="" choice status version
+  if ! installation_configured; then
+    render_uninstalled_menu
+    choice="$(prompt_menu_choice "1" "1")" || return 1
+    case "${choice}" in
+      0) success "已退出，未作任何修改。" ;;
+      1) do_install ;;
+    esac
+    return
   fi
 
+  public_url="$(env_value LANQIN_PUBLIC_BASE_URL || true)"
+  status="$(menu_service_status)"
+  version="$(menu_installed_version)"
+  [[ "${status}" == "安装不完整" ]] && default_choice="3"
+  render_installed_menu "${status}" "${version}" "${public_url}"
+
+  choice="$(prompt_menu_choice "${default_choice}" "12")" || return 1
   case "${choice}" in
     0) success "已退出，未作任何修改。" ;;
     1) do_install ;;
     2) do_update ;;
     3) do_repair_install ;;
-    4) ensure_docker; do_status ;;
+    4) do_status ;;
     5) do_restart ;;
-    6) ensure_docker; compose logs -f --tail=200 lanqin-email updater ;;
+    6) do_logs ;;
     7) do_certificate ;;
-    8) ensure_docker; do_rollback ;;
+    8) do_rollback ;;
     9) do_guide ;;
     10) do_show_admin_credentials ;;
     11) do_reset_admin_password ;;
-    12) ensure_docker; do_uninstall ;;
+    12) do_uninstall ;;
   esac
 }
 
@@ -1344,15 +1589,17 @@ case "${COMMAND}" in
   menu) require_root; require_curl; do_menu ;;
   install) require_root; require_curl; do_install ;;
   update) require_root; require_curl; do_update ;;
-  status) require_root; require_curl; ensure_docker; do_status ;;
-  logs) require_root; require_curl; ensure_docker; compose logs -f --tail=200 lanqin-email updater ;;
+  repair) require_root; require_curl; do_repair_install ;;
+  status) require_root; require_curl; do_status ;;
+  logs) require_root; require_curl; do_logs ;;
   restart) require_root; require_curl; do_restart ;;
   reload) require_root; require_curl; reload_services ;;
   certificate) require_root; require_curl; do_certificate ;;
-  rollback) require_root; require_curl; ensure_docker; do_rollback ;;
+  rollback) require_root; require_curl; do_rollback ;;
   guide) require_root; require_curl; do_guide ;;
   credentials) require_root; require_curl; do_show_admin_credentials ;;
   reset-password) require_root; require_curl; do_reset_admin_password ;;
-  uninstall) require_root; require_curl; ensure_docker; do_uninstall ;;
+  reset-2fa) require_root; require_curl; do_reset_admin_two_factor ;;
+  uninstall) require_root; require_curl; do_uninstall ;;
   *) usage; fail "未知命令：${COMMAND}" ;;
 esac

pnpm-lock.yaml

@@ -81,8 +81,8 @@ importers:
         specifier: 2.1.1
         version: 2.1.1
       dompurify:
-        specifier: 3.4.12
-        version: 3.4.12
+        specifier: 3.4.13
+        version: 3.4.13
       lucide-react:
         specifier: ^0.468.0
         version: 0.468.0(react@18.3.1)
@@ -1022,8 +1022,8 @@ packages:
   dlv@1.1.3:
     resolution: {integrity: sha512-+HlytyjlPKnIG8XuRG8WvmBP8xs8P71y+SKKS6ZXWoEgLuePxtDoUEiH7WkdePWrQ5JBpE6aoVqfZfJUQkjXwA==}
 
-  dompurify@3.4.12:
-    resolution: {integrity: sha512-zQvGet8Z2sWbQhCmfFz/T5QWH2oBmjnqK3qvOjaqaNLrLEF912WamU+ohnTp0TCep/MFVHpdJuCZEdFOdTnEFg==}
+  dompurify@3.4.13:
+    resolution: {integrity: sha512-2vmYIoqjze2d+kakP8S/nS5shfsl587kzwEjcGlTdiksUVgFHnFCsLYDVj/JNqJVOQZGSYBTmuycv0PodwmnMQ==}
 
   electron-to-chromium@1.5.375:
     resolution: {integrity: sha512-ZWP5eB4BVPW/ZYo9252hQZHZ5XavtsTgpbhcmMmRwymavC5AsLWQWBPaKMeNd2LW0KGby5HPXvj7+sr4ta5j/Q==}
@@ -2447,7 +2447,7 @@ snapshots:
 
   dlv@1.1.3: {}
 
-  dompurify@3.4.12:
+  dompurify@3.4.13:
     optionalDependencies:
       '@types/trusted-types': 2.0.7
 

tests/dkim_sync_test.sh

@@ -0,0 +1,54 @@
+#!/usr/bin/env bash
+set -Eeuo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+TEMP_DIR="$(mktemp -d)"
+trap 'rm -rf "${TEMP_DIR}"' EXIT
+
+fail_test() {
+  printf 'FAIL: %s\n' "$*" >&2
+  exit 1
+}
+
+mkdir -p "${TEMP_DIR}/bin" "${TEMP_DIR}/keys"
+touch "${TEMP_DIR}/lanqin.db" "${TEMP_DIR}/reload.log"
+
+cat > "${TEMP_DIR}/bin/sqlite3" <<'EOF'
+#!/bin/sh
+printf 'example.com|lanqin|%s\n' "$(cat "${FAKE_PRIVATE_KEY_FILE}")"
+EOF
+cat > "${TEMP_DIR}/bin/id" <<'EOF'
+#!/bin/sh
+exit 1
+EOF
+cat > "${TEMP_DIR}/bin/rspamadm" <<'EOF'
+#!/bin/sh
+printf '%s\n' "$*" >> "${FAKE_RELOAD_LOG}"
+EOF
+cat > "${TEMP_DIR}/bin/pkill" <<'EOF'
+#!/bin/sh
+printf 'unexpected pkill fallback\n' >&2
+exit 1
+EOF
+chmod 0755 "${TEMP_DIR}/bin/sqlite3" "${TEMP_DIR}/bin/id" "${TEMP_DIR}/bin/rspamadm" "${TEMP_DIR}/bin/pkill"
+
+export PATH="${TEMP_DIR}/bin:${PATH}"
+export LANQIN_DB_PATH="${TEMP_DIR}/lanqin.db"
+export LANQIN_RSPAMD_DKIM_DIR="${TEMP_DIR}/keys"
+export FAKE_PRIVATE_KEY_FILE="${TEMP_DIR}/private-key.b64"
+export FAKE_RELOAD_LOG="${TEMP_DIR}/reload.log"
+
+printf 'first-private-key' | base64 > "${FAKE_PRIVATE_KEY_FILE}"
+sh "${ROOT_DIR}/deploy/rspamd/sync-dkim.sh" --once
+[[ "$(cat "${TEMP_DIR}/keys/example.com.lanqin.key")" == "first-private-key" ]] || fail_test "initial DKIM key was not exported"
+[[ "$(wc -l < "${FAKE_RELOAD_LOG}" | tr -d ' ')" == "1" ]] || fail_test "initial DKIM key did not reload Rspamd"
+
+sh "${ROOT_DIR}/deploy/rspamd/sync-dkim.sh" --once
+[[ "$(wc -l < "${FAKE_RELOAD_LOG}" | tr -d ' ')" == "1" ]] || fail_test "unchanged DKIM key reloaded Rspamd"
+
+printf 'second-private-key' | base64 > "${FAKE_PRIVATE_KEY_FILE}"
+sh "${ROOT_DIR}/deploy/rspamd/sync-dkim.sh" --once
+[[ "$(cat "${TEMP_DIR}/keys/example.com.lanqin.key")" == "second-private-key" ]] || fail_test "changed DKIM key was not exported"
+[[ "$(wc -l < "${FAKE_RELOAD_LOG}" | tr -d ' ')" == "2" ]] || fail_test "changed DKIM key did not reload Rspamd"
+
+printf 'DKIM sync tests passed.\n'

tests/install_test.sh

@@ -43,6 +43,26 @@ test_password_validation() {
   fi
 }
 
+test_mail_domain_and_admin_email_validation() {
+  assert_eq "example.com" "$(suggest_mail_domain "mail.example.com")" "mail host domain suggestion"
+  assert_eq "example.co.uk" "$(suggest_mail_domain "mail.example.co.uk")" "multi-label mail host domain suggestion"
+  assert_eq "newszxcn.com" "$(suggest_mail_domain "mail.newszxcn.com")" "NewSzxcn mail host domain suggestion"
+  assert_eq "admin@newszxcn.com" "$(LANQIN_ADMIN_EMAIL='' LANQIN_ADMIN_PREFIX='' prompt_admin_email "newszxcn.com")" "NewSzxcn default administrator email"
+  assert_eq "newszxcn.cm" "$(suggest_mail_domain "mail.newszxcn.cm")" "two-label suffix mail host domain suggestion"
+  assert_eq "admin@newszxcn.cm" "$(LANQIN_ADMIN_EMAIL='' LANQIN_ADMIN_PREFIX='' prompt_admin_email "newszxcn.cm")" "matching administrator email for entered domain"
+  LANQIN_MAIL_DOMAIN="example.com"
+  LANQIN_ADMIN_EMAIL="admin@example.com"
+  assert_eq "example.com" "$(prompt_mail_domain "mail.example.com")" "explicit mail domain"
+  assert_eq "admin@example.com" "$(prompt_admin_email "example.com")" "explicit administrator email"
+  if (LANQIN_ADMIN_EMAIL="admin@other.example.com" prompt_admin_email "example.com" >/dev/null 2>&1); then
+    fail_test "administrator email outside mail domain accepted"
+  fi
+  if (has_tty() { return 1; }; unset LANQIN_MAIL_DOMAIN LANQIN_ADMIN_EMAIL; prompt_mail_domain "mail.example.com" >/dev/null 2>&1); then
+    fail_test "noninteractive mail domain guessed without explicit input"
+  fi
+  unset LANQIN_MAIL_DOMAIN LANQIN_ADMIN_EMAIL
+}
+
 test_install_configuration() {
   local firewall_mode="$1" web_mode="$2" want_bind="$3" want_url="$4" want_insecure="$5"
   local temp_dir
@@ -52,7 +72,8 @@ test_install_configuration() {
   export INSTALL_DIR="${temp_dir}"
   export LANQIN_INSTALL_FIREWALL_MODE="${firewall_mode}"
   export LANQIN_PUBLIC_HOSTNAME="mail.example.com"
-  export LANQIN_ADMIN_USERNAME="admin"
+  export LANQIN_MAIL_DOMAIN="example.com"
+  export LANQIN_ADMIN_EMAIL="admin@example.com"
   export LANQIN_ADMIN_PASSWORD="abc123"
   export LANQIN_INSTALL_WEB_MODE="${web_mode}"
   configure_first_install
@@ -63,6 +84,9 @@ test_install_configuration() {
   assert_eq "${want_bind}" "$(env_value LANQIN_HTTP_BIND)" "HTTP bind"
   assert_eq "${want_url}" "$(env_value LANQIN_PUBLIC_BASE_URL)" "public URL"
   assert_eq "${want_insecure}" "$(env_value LANQIN_ALLOW_INSECURE_HTTP)" "insecure HTTP flag"
+  assert_eq "example.com" "$(env_value LANQIN_MAIL_DOMAIN)" "mail address domain"
+  assert_eq "admin@example.com" "$(env_value LANQIN_ADMIN_EMAIL)" "administrator email"
+  assert_eq "admin" "$(env_value LANQIN_ADMIN_USERNAME)" "legacy administrator username prefix"
   assert_eq "abc123" "$(env_value LANQIN_ADMIN_PASSWORD)" "administrator password"
 }
 
@@ -127,6 +151,123 @@ test_menu_choice() {
   unset LANQIN_MENU_ACTION
 }
 
+test_menu_rendering() (
+  local output
+  prompt_text() { printf '%b' "$1"; }
+
+  output="$(render_uninstalled_menu)"
+  [[ "${output}" == *'NewSzxcn Email 管理面板'* ]] || fail_test "uninstalled menu title missing"
+  [[ "${output}" == *'状态：尚未安装'* ]] || fail_test "uninstalled menu status missing"
+  [[ "${output}" == *'1. 一键安装 NewSzxcn Email'* ]] || fail_test "uninstalled menu install action missing"
+  [[ "${output}" != *'更新系统'* ]] || fail_test "uninstalled menu exposes update action"
+  [[ "${output}" != *'卸载服务'* ]] || fail_test "uninstalled menu exposes uninstall action"
+
+  output="$(render_installed_menu "运行中" "v1.2.19" "https://mail.example.com")"
+  for expected in \
+    '状态：运行中' \
+    '版本：v1.2.19' \
+    '地址：https://mail.example.com' \
+    '安装与维护' \
+    '服务管理' \
+    '证书与恢复' \
+    '账号与帮助' \
+    '危险操作' \
+    '9. 邮箱后台配置指南' \
+    '12. 卸载服务（保留数据）'; do
+    [[ "${output}" == *"${expected}"* ]] || fail_test "installed menu item missing: ${expected}"
+  done
+)
+
+test_menu_dispatch() (
+  local temp_dir action_file LANQIN_MENU_ACTION=1
+  temp_dir="$(mktemp -d)"
+  INSTALL_DIR="${temp_dir}/install"
+  action_file="${temp_dir}/action"
+  mkdir -p "${INSTALL_DIR}"
+  prompt_text() { :; }
+  do_install() { printf 'install\n' > "${action_file}"; }
+
+  do_menu
+  grep -Fq 'install' "${action_file}" || fail_test "uninstalled menu did not dispatch install"
+  if (LANQIN_MENU_ACTION=2 do_menu >/dev/null 2>&1); then
+    fail_test "uninstalled menu accepted unavailable update action"
+  fi
+
+  printf 'LANQIN_PUBLIC_BASE_URL=https://mail.example.com\n' > "${INSTALL_DIR}/.env"
+  printf 'services: {}\n' > "${INSTALL_DIR}/docker-compose.yml"
+  menu_service_status() { printf '运行中'; }
+  menu_installed_version() { printf 'v1.2.19'; }
+  do_update() { printf 'update\n' > "${action_file}"; }
+  LANQIN_MENU_ACTION=2
+  do_menu
+  grep -Fq 'update' "${action_file}" || fail_test "installed menu did not dispatch update"
+  unset LANQIN_MENU_ACTION
+)
+
+test_menu_runtime_metadata() (
+  local temp_dir running="true" image_version="v1.2.19"
+  temp_dir="$(mktemp -d)"
+  INSTALL_DIR="${temp_dir}/install"
+  mkdir -p "${INSTALL_DIR}"
+  printf 'LANQIN_PUBLIC_BASE_URL=https://mail.example.com\n' > "${INSTALL_DIR}/.env"
+  printf 'services: {}\n' > "${INSTALL_DIR}/docker-compose.yml"
+  compose() {
+    if [[ "$*" == 'ps -q lanqin-email' ]]; then
+      printf 'container-id\n'
+    fi
+  }
+  current_image_id() { printf 'sha256:test-image\n'; }
+  docker() {
+    if [[ "$*" == 'compose version' ]]; then
+      return 0
+    fi
+    if [[ "$*" == *'.State.Running'* ]]; then
+      printf '%s\n' "${running}"
+      return 0
+    fi
+    if [[ "$*" == *'org.opencontainers.image.version'* ]]; then
+      printf '%s\n' "${image_version}"
+    fi
+  }
+
+  assert_eq "运行中" "$(menu_service_status)" "running menu service status"
+  assert_eq "v1.2.19" "$(menu_installed_version)" "installed menu version"
+  running="false"
+  assert_eq "已停止" "$(menu_service_status)" "stopped menu service status"
+  image_version="<no value>"
+  assert_eq "未知" "$(menu_installed_version)" "missing image version label"
+)
+
+test_incomplete_install_defaults_to_repair() (
+  local temp_dir action_file LANQIN_MENU_ACTION=3
+  temp_dir="$(mktemp -d)"
+  INSTALL_DIR="${temp_dir}/install"
+  action_file="${temp_dir}/action"
+  mkdir -p "${INSTALL_DIR}"
+  printf 'LANQIN_PUBLIC_BASE_URL=https://mail.example.com\n' > "${INSTALL_DIR}/.env"
+  prompt_text() { :; }
+  menu_installed_version() { printf '未知'; }
+  do_repair_install() { printf 'repair\n' > "${action_file}"; }
+  do_menu
+  grep -Fq 'repair' "${action_file}" || fail_test "incomplete installation did not dispatch repair"
+  unset LANQIN_MENU_ACTION
+)
+
+test_service_commands_require_complete_installation() (
+  local temp_dir command_name
+  temp_dir="$(mktemp -d)"
+  INSTALL_DIR="${temp_dir}/install"
+  mkdir -p "${INSTALL_DIR}"
+  # Invoked indirectly by the service command functions under test.
+  # shellcheck disable=SC2317,SC2329
+  ensure_docker() { fail_test "service command checked Docker before installation"; }
+  for command_name in do_update do_status do_logs do_restart do_certificate do_rollback do_reset_admin_password do_reset_admin_two_factor do_uninstall; do
+    if ("${command_name}" >/dev/null 2>&1); then
+      fail_test "${command_name} accepted missing installation"
+    fi
+  done
+)
+
 test_admin_credentials() (
   local temp_dir output
   temp_dir="$(mktemp -d)"
@@ -134,12 +275,13 @@ test_admin_credentials() (
   mkdir -p "${INSTALL_DIR}"
   cat > "${INSTALL_DIR}/.env" <<'EOF'
 LANQIN_PUBLIC_BASE_URL=https://mail.example.com
-LANQIN_ADMIN_USERNAME=admin
+LANQIN_MAIL_DOMAIN=example.com
+LANQIN_ADMIN_EMAIL=admin@example.com
 LANQIN_ADMIN_PASSWORD=recorded-password
 EOF
   output="$(do_show_admin_credentials 2>&1)"
   [[ "${output}" == *'登录地址：https://mail.example.com'* ]] || fail_test "administrator login URL missing"
-  [[ "${output}" == *'管理员用户名：admin'* ]] || fail_test "administrator username missing"
+  [[ "${output}" == *'管理员邮箱：admin@example.com'* ]] || fail_test "administrator email missing"
   [[ "${output}" == *'记录密码：recorded-password'* ]] || fail_test "recorded administrator password missing"
   [[ "${output}" == *'无法从数据库反向查看'* ]] || fail_test "password hash warning missing"
 )
@@ -160,9 +302,12 @@ test_admin_password_reset_only_updates_admin_account() (
   compose_calls="${temp_dir}/compose-calls"
   mkdir -p "${INSTALL_DIR}/data/backups"
   cat > "${INSTALL_DIR}/.env" <<'EOF'
-LANQIN_ADMIN_USERNAME=admin
+LANQIN_PUBLIC_HOSTNAME=mail.example.com
+LANQIN_MAIL_DOMAIN=example.com
+LANQIN_ADMIN_EMAIL=admin@example.com
 LANQIN_ADMIN_PASSWORD=old-password
 EOF
+  printf 'services: {}\n' > "${INSTALL_DIR}/docker-compose.yml"
   printf 'database\n' > "${INSTALL_DIR}/data/lanqin.db"
 
   ensure_docker() { return 0; }
@@ -186,12 +331,49 @@ EOF
   do_reset_admin_password >/dev/null
   assert_eq "new-password" "$(env_value LANQIN_ADMIN_PASSWORD)" "recorded reset password"
   [[ -s "${backup_path}" ]] || fail_test "password reset database backup missing"
-  grep -Fq "login_name='admin' AND role='admin'" "${compose_calls}" || fail_test "administrator lookup is not role restricted"
+  grep -Fq "email='admin@example.com' AND role='admin'" "${compose_calls}" || fail_test "administrator lookup is not email and role restricted"
   grep -Fq "UPDATE users SET password_hash=" "${compose_calls}" || fail_test "administrator user password was not updated"
   grep -Fq "UPDATE mailboxes SET password_hash=" "${compose_calls}" || fail_test "administrator mailbox passwords were not synchronized"
   grep -Fq "WHERE user_id='admin-user-id'" "${compose_calls}" || fail_test "mailbox password update is not restricted to the administrator"
 )
 
+test_admin_two_factor_reset_only_updates_admin_account() (
+  local temp_dir compose_calls backup_path
+  temp_dir="$(mktemp -d)"
+  INSTALL_DIR="${temp_dir}/install"
+  compose_calls="${temp_dir}/compose-calls"
+  mkdir -p "${INSTALL_DIR}/data/backups"
+  cat > "${INSTALL_DIR}/.env" <<'EOF'
+LANQIN_PUBLIC_HOSTNAME=mail.example.com
+LANQIN_MAIL_DOMAIN=example.com
+LANQIN_ADMIN_EMAIL=admin@example.com
+EOF
+  printf 'services: {}\n' > "${INSTALL_DIR}/docker-compose.yml"
+  printf 'database\n' > "${INSTALL_DIR}/data/lanqin.db"
+
+  ensure_docker() { return 0; }
+  current_image_id() { printf 'sha256:test-image\n'; }
+  backup_database() {
+    backup_path="$1"
+    printf 'backup\n' > "${backup_path}"
+  }
+  compose() {
+    printf '%s\n' "$*" >> "${compose_calls}"
+    if [[ "$*" == *'SELECT id FROM users'* ]]; then
+      printf 'admin-user-id\n'
+    elif [[ "$*" == *"UPDATE users SET two_factor_secret=''"* ]]; then
+      printf 'user=1\nrecovery=2\nchallenges=1\n'
+    fi
+  }
+
+  do_reset_admin_two_factor >/dev/null
+  [[ -s "${backup_path}" ]] || fail_test "2FA reset database backup missing"
+  grep -Fq "email='admin@example.com' AND role='admin'" "${compose_calls}" || fail_test "2FA administrator lookup is not email and role restricted"
+  grep -Fq "UPDATE users SET two_factor_secret=''" "${compose_calls}" || fail_test "administrator 2FA flag was not cleared"
+  grep -Fq "DELETE FROM two_factor_recovery_codes WHERE user_id='admin-user-id'" "${compose_calls}" || fail_test "administrator recovery codes were not deleted"
+  grep -Fq "DELETE FROM login_challenges WHERE user_id='admin-user-id'" "${compose_calls}" || fail_test "administrator login challenges were not deleted"
+)
+
 test_offline_database_backup() (
   local temp_dir destination
   temp_dir="$(mktemp -d)"
@@ -215,10 +397,12 @@ test_guide_generation() (
   cp "${ROOT_DIR}/deploy/.env.example" "${INSTALL_DIR}/.env"
   set_env LANQIN_PUBLIC_HOSTNAME "mail.example.com"
   set_env LANQIN_PUBLIC_BASE_URL "https://mail.example.com"
-  set_env LANQIN_ADMIN_USERNAME "admin"
+  set_env LANQIN_MAIL_DOMAIN "example.com"
+  set_env LANQIN_ADMIN_EMAIL "admin@example.com"
   generate_guide
   grep -Fq '邮箱前台：https://mail.example.com' "${GUIDE_FILE}" || fail_test "guide frontend URL missing"
   grep -Fq '管理后台：https://mail.example.com/admin' "${GUIDE_FILE}" || fail_test "guide admin URL missing"
+  grep -Fq '管理员邮箱：admin@example.com' "${GUIDE_FILE}" || fail_test "guide administrator email missing"
   grep -Fq '管理员密码：仅在安装完成时显示' "${GUIDE_FILE}" || fail_test "guide password safety text missing"
   [[ "$(stat -c '%a' "${GUIDE_FILE}" 2>/dev/null || stat -f '%Lp' "${GUIDE_FILE}")" == "600" ]] || fail_test "guide permissions are not 600"
 )
@@ -503,15 +687,22 @@ test_backup_reinstall_recovers_from_nginx_reload_failure() (
 
 test_hostname_validation
 test_password_validation
+test_mail_domain_and_admin_email_validation
 test_install_configuration 1 1 "127.0.0.1:8088" "https://mail.example.com" "false"
 test_install_configuration 2 2 "127.0.0.1:8088" "https://mail.example.com" "false"
 test_nginx_configuration
 test_compose_configuration
 test_legacy_configuration_is_preserved
 test_menu_choice
+test_menu_rendering
+test_menu_dispatch
+test_menu_runtime_metadata
+test_incomplete_install_defaults_to_repair
+test_service_commands_require_complete_installation
 test_admin_credentials
 test_admin_password_hash_parsing
 test_admin_password_reset_only_updates_admin_account
+test_admin_two_factor_reset_only_updates_admin_account
 test_offline_database_backup
 test_guide_generation
 test_acme_cron_detection