feat(mail): 增强邮件认证与审计能力

- 新增邮件认证结果解析、存储与前端展示，支持查看 SPF、DKIM、DMARC 及原始头信息。
- 扩展邮件规则条件，支持抄送、附件、大小、日期及嵌套条件组合。
- 增加邮箱容量统计与发送前配额校验，超限时返回明确错误。
- 新增管理端发送审计页面与接口，支持按邮箱、事件、Message-ID 和时间筛选。

apps/api/internal/app/admin_handlers.go

@@ -715,7 +715,7 @@ func (a *App) handleDeleteMailbox(w http.ResponseWriter, r *http.Request) {
 	}
 	rows.Close()
 	for _, messageID := range messageIDs {
-		a.deleteMessageFiles(r.Context(), messageID)
+		a.deleteMessage(r.Context(), messageID)
 	}
 	res, err := a.db.ExecContext(r.Context(), `DELETE FROM mailboxes WHERE id=?`, id)
 	if err != nil {
@@ -786,7 +786,7 @@ func (a *App) handleAdminMessages(w http.ResponseWriter, r *http.Request) {
 	}
 	args = append(args, limit+1, offset)
 
-	rows, err := a.db.QueryContext(r.Context(), `SELECT m.id,COALESCE(m.mailbox_id,''),COALESCE(mb.address,''),COALESCE(u.email,''),COALESCE(m.recipient_addr,''),COALESCE(m.folder_id,''),COALESCE(f.name,'Unregistered'),m.message_uid,m.message_id,m.subject,m.from_addr,COALESCE(m.from_name,''),m.to_addrs,m.cc_addrs,m.bcc_addrs,m.sent_at,m.received_at,m.snippet,m.is_read,m.is_starred,m.has_attachments,m.size_bytes
+	rows, err := a.db.QueryContext(r.Context(), `SELECT m.id,COALESCE(m.mailbox_id,''),COALESCE(mb.address,''),COALESCE(u.email,''),COALESCE(m.recipient_addr,''),COALESCE(m.folder_id,''),COALESCE(f.name,'Unregistered'),m.message_uid,m.imap_uid,m.imap_modseq,m.message_id,m.subject,m.from_addr,COALESCE(m.from_name,''),m.to_addrs,m.cc_addrs,m.bcc_addrs,m.sent_at,m.received_at,m.snippet,m.is_read,m.is_starred,m.has_attachments,m.size_bytes
 		FROM messages m
 		LEFT JOIN folders f ON f.id=m.folder_id
 		LEFT JOIN mailboxes mb ON mb.id=m.mailbox_id
@@ -833,6 +833,116 @@ func (a *App) handleAdminMessage(w http.ResponseWriter, r *http.Request) {
 	respondJSON(w, http.StatusOK, msg)
 }
 
+func (a *App) handleAdminSendAudit(w http.ResponseWriter, r *http.Request) {
+	mailboxID := strings.TrimSpace(r.URL.Query().Get("mailboxId"))
+	messageID := strings.TrimSpace(r.URL.Query().Get("messageId"))
+	event := strings.TrimSpace(r.URL.Query().Get("event"))
+	from, err := adminAuditTimeParam(r.URL.Query().Get("from"), false)
+	if err != nil {
+		badRequest(w, err)
+		return
+	}
+	to, err := adminAuditTimeParam(r.URL.Query().Get("to"), true)
+	if err != nil {
+		badRequest(w, err)
+		return
+	}
+	offset, _ := strconv.Atoi(r.URL.Query().Get("cursor"))
+	if offset < 0 {
+		offset = 0
+	}
+	limit := 50
+
+	where := []string{"1=1"}
+	args := []any{}
+	if mailboxID != "" && mailboxID != "all" {
+		where = append(where, "sae.mailbox_id=?")
+		args = append(args, mailboxID)
+	}
+	if messageID != "" {
+		where = append(where, "(sq.message_id=? OR m.message_id=? OR sae.sent_message_id=?)")
+		args = append(args, messageID, messageID, messageID)
+	}
+	if event != "" && event != "all" {
+		if !isSendAuditEvent(event) {
+			badRequest(w, errors.New("invalid event"))
+			return
+		}
+		where = append(where, "sae.event=?")
+		args = append(args, event)
+	}
+	if from != "" {
+		where = append(where, "sae.created_at>=?")
+		args = append(args, from)
+	}
+	if to != "" {
+		where = append(where, "sae.created_at<=?")
+		args = append(args, to)
+	}
+	args = append(args, limit+1, offset)
+
+	rows, err := a.db.QueryContext(r.Context(), `SELECT sae.id,sae.queue_id,sae.mailbox_id,COALESCE(mb.address,''),sae.sent_message_id,COALESCE(sq.message_id,m.message_id,''),sae.source,sae.event,sae.status,sae.mail_from,sae.header_from,sae.recipients_json,sae.error,sae.created_at
+		FROM send_audit_events sae
+		LEFT JOIN mailboxes mb ON mb.id=sae.mailbox_id
+		LEFT JOIN send_queue sq ON sq.id=sae.queue_id
+		LEFT JOIN messages m ON m.id=sae.sent_message_id
+		WHERE `+strings.Join(where, " AND ")+`
+		ORDER BY sae.created_at DESC, sae.id DESC LIMIT ? OFFSET ?`, args...)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load send audit")
+		return
+	}
+	defer rows.Close()
+	items := []SendAuditEvent{}
+	for rows.Next() {
+		var item SendAuditEvent
+		var recipientsJSON, createdAt string
+		if err := rows.Scan(&item.ID, &item.QueueID, &item.MailboxID, &item.MailboxAddress, &item.SentMessageID, &item.MessageID, &item.Source, &item.Event, &item.Status, &item.MailFrom, &item.HeaderFrom, &recipientsJSON, &item.Error, &createdAt); err != nil {
+			respondError(w, http.StatusInternalServerError, "failed to scan send audit")
+			return
+		}
+		item.Recipients = jsonDecodeSlice(recipientsJSON)
+		item.CreatedAt = parseTime(createdAt)
+		items = append(items, item)
+	}
+	if err := rows.Err(); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load send audit")
+		return
+	}
+	next := ""
+	if len(items) > limit {
+		items = items[:limit]
+		next = strconv.Itoa(offset + limit)
+	}
+	respondJSON(w, http.StatusOK, map[string]any{"items": items, "nextCursor": next})
+}
+
+func adminAuditTimeParam(value string, endOfDay bool) (string, error) {
+	value = strings.TrimSpace(value)
+	if value == "" {
+		return "", nil
+	}
+	if t, err := time.Parse(time.RFC3339Nano, value); err == nil {
+		return t.UTC().Format(time.RFC3339Nano), nil
+	}
+	if t, err := time.Parse("2006-01-02", value); err == nil {
+		if endOfDay {
+			t = t.Add(24*time.Hour - time.Nanosecond)
+		}
+		return t.UTC().Format(time.RFC3339Nano), nil
+	}
+	return "", errors.New("invalid time filter")
+}
+
+func isSendAuditEvent(event string) bool {
+	switch event {
+	case sendAuditAccepted, sendAuditQueued, sendAuditRetry, sendAuditDelivered, sendAuditFailed, sendAuditCanceled:
+		return true
+	default:
+		return false
+	}
+}
+
 func (a *App) handleCreateAlias(w http.ResponseWriter, r *http.Request) {
 	var req struct {
 		DomainID    string `json:"domainId"`
@@ -1039,6 +1149,6 @@ func (a *App) ensureFolder(ctx context.Context, mailboxID, folder string) (strin
 	}
 	role := strings.ToLower(folder)
 	id = newID("fld")
-	_, err := a.db.ExecContext(ctx, `INSERT INTO folders(id,mailbox_id,name,role,created_at) VALUES(?,?,?,?,?)`, id, mailboxID, folder, role, a.now().UTC().Format(time.RFC3339Nano))
+	_, err := a.db.ExecContext(ctx, `INSERT INTO folders(id,mailbox_id,name,role,uid_validity,uid_next,highest_modseq,created_at) VALUES(?,?,?,?,?,?,?,?)`, id, mailboxID, folder, role, a.newUIDValidity(), 1, 1, a.now().UTC().Format(time.RFC3339Nano))
 	return id, err
 }

apps/api/internal/app/app.go

@@ -28,6 +28,7 @@ type App struct {
 	now           func() time.Time
 	policy        *HTMLPolicy
 	workerCancel  context.CancelFunc
+	maildirHealth *maildirSyncHealthTracker
 }
 
 func New(cfg Config, logger *slog.Logger) (*App, error) {
@@ -47,7 +48,7 @@ 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()}
+	a := &App{cfg: cfg, db: db, log: logger, now: time.Now, policy: NewHTMLPolicy(), maildirHealth: newMaildirSyncHealthTracker()}
 	if err := a.configureSQLite(context.Background()); err != nil {
 		db.Close()
 		return nil, err
@@ -201,6 +202,9 @@ 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,
+			uid_validity INTEGER NOT NULL DEFAULT 0,
+			uid_next INTEGER NOT NULL DEFAULT 1,
+			highest_modseq INTEGER NOT NULL DEFAULT 1,
 			created_at TEXT NOT NULL,
 			UNIQUE(mailbox_id, name)
 		)`,
@@ -226,7 +230,14 @@ func (a *App) migrate(ctx context.Context) error {
 			is_starred INTEGER NOT NULL DEFAULT 0,
 			has_attachments INTEGER NOT NULL DEFAULT 0,
 			size_bytes INTEGER NOT NULL DEFAULT 0,
+			auth_results TEXT NOT NULL DEFAULT '',
+			auth_spf TEXT NOT NULL DEFAULT 'unknown',
+			auth_dkim TEXT NOT NULL DEFAULT 'unknown',
+			auth_dmarc TEXT NOT NULL DEFAULT 'unknown',
+			received_spf TEXT NOT NULL DEFAULT '',
 			raw_path TEXT NOT NULL DEFAULT '',
+			imap_uid INTEGER NOT NULL DEFAULT 0,
+			imap_modseq INTEGER NOT NULL DEFAULT 1,
 			created_at TEXT NOT NULL,
 			updated_at TEXT NOT NULL
 		)`,
@@ -413,6 +424,9 @@ func (a *App) migrate(ctx context.Context) error {
 	if err := a.migrateMessagesFromName(ctx); err != nil {
 		return err
 	}
+	if err := a.migrateMessageAuthentication(ctx); err != nil {
+		return err
+	}
 	if err := a.migrateUsersForTwoFactor(ctx); err != nil {
 		return err
 	}
@@ -428,12 +442,56 @@ func (a *App) migrate(ctx context.Context) error {
 	if err := a.migrateSendQueueMessageID(ctx); err != nil {
 		return err
 	}
+	if err := a.migrateIMAPMetadata(ctx); err != nil {
+		return err
+	}
 	if err := a.ensureDefaultPermissionGroups(ctx); err != nil {
 		return err
 	}
 	return nil
 }
 
+func (a *App) migrateMessageAuthentication(ctx context.Context) error {
+	rows, err := a.db.QueryContext(ctx, `PRAGMA table_info(messages)`)
+	if err != nil {
+		return err
+	}
+	defer rows.Close()
+	columns := map[string]bool{}
+	for rows.Next() {
+		var cid int
+		var name, typ string
+		var notnull int
+		var dflt any
+		var pk int
+		if err := rows.Scan(&cid, &name, &typ, &notnull, &dflt, &pk); err != nil {
+			return err
+		}
+		columns[name] = true
+	}
+	if err := rows.Err(); err != nil {
+		return err
+	}
+	alter := []struct {
+		name string
+		sql  string
+	}{
+		{"auth_results", `ALTER TABLE messages ADD COLUMN auth_results TEXT NOT NULL DEFAULT ''`},
+		{"auth_spf", `ALTER TABLE messages ADD COLUMN auth_spf TEXT NOT NULL DEFAULT 'unknown'`},
+		{"auth_dkim", `ALTER TABLE messages ADD COLUMN auth_dkim TEXT NOT NULL DEFAULT 'unknown'`},
+		{"auth_dmarc", `ALTER TABLE messages ADD COLUMN auth_dmarc TEXT NOT NULL DEFAULT 'unknown'`},
+		{"received_spf", `ALTER TABLE messages ADD COLUMN received_spf TEXT NOT NULL DEFAULT ''`},
+	}
+	for _, item := range alter {
+		if !columns[item.name] {
+			if _, err := a.db.ExecContext(ctx, item.sql); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
 func (a *App) migrateSendQueueMessageID(ctx context.Context) error {
 	rows, err := a.db.QueryContext(ctx, `PRAGMA table_info(send_queue)`)
 	if err != nil {
@@ -582,7 +640,7 @@ func (a *App) migrateLegacyBootstrapMailbox(ctx context.Context) error {
 			return err
 		}
 		for _, messageID := range messageIDs {
-			a.deleteMessageFiles(ctx, messageID)
+			a.deleteMessage(ctx, messageID)
 		}
 		if _, err := a.db.ExecContext(ctx, `DELETE FROM mailboxes WHERE id=?`, item.id); err != nil {
 			return err
@@ -1029,7 +1087,7 @@ func (a *App) createMailboxWithPasswordHash(ctx context.Context, userID, domainI
 		return "", err
 	}
 	for _, f := range defaultFolderDefs() {
-		_, err = tx.ExecContext(ctx, `INSERT INTO folders(id,mailbox_id,name,role,created_at) VALUES(?,?,?,?,?)`, newID("fld"), id, f.name, f.role, now)
+		_, err = tx.ExecContext(ctx, `INSERT INTO folders(id,mailbox_id,name,role,uid_validity,uid_next,highest_modseq,created_at) VALUES(?,?,?,?,?,?,?,?)`, newID("fld"), id, f.name, f.role, a.newUIDValidity(), 1, 1, now)
 		if err != nil {
 			return "", err
 		}

apps/api/internal/app/imap_metadata.go

@@ -0,0 +1,242 @@
+package app
+
+import (
+	"context"
+	"database/sql"
+	"math"
+	"time"
+)
+
+type imapMetadata struct {
+	UID    int64
+	ModSeq int64
+}
+
+func (a *App) migrateIMAPMetadata(ctx context.Context) error {
+	if err := a.ensureTableColumn(ctx, "folders", "uid_validity", `ALTER TABLE folders ADD COLUMN uid_validity INTEGER NOT NULL DEFAULT 0`); err != nil {
+		return err
+	}
+	if err := a.ensureTableColumn(ctx, "folders", "uid_next", `ALTER TABLE folders ADD COLUMN uid_next INTEGER NOT NULL DEFAULT 1`); err != nil {
+		return err
+	}
+	if err := a.ensureTableColumn(ctx, "folders", "highest_modseq", `ALTER TABLE folders ADD COLUMN highest_modseq INTEGER NOT NULL DEFAULT 1`); err != nil {
+		return err
+	}
+	if err := a.ensureTableColumn(ctx, "messages", "imap_uid", `ALTER TABLE messages ADD COLUMN imap_uid INTEGER NOT NULL DEFAULT 0`); err != nil {
+		return err
+	}
+	if err := a.ensureTableColumn(ctx, "messages", "imap_modseq", `ALTER TABLE messages ADD COLUMN imap_modseq INTEGER NOT NULL DEFAULT 1`); err != nil {
+		return err
+	}
+	if _, err := a.db.ExecContext(ctx, `UPDATE folders SET uid_validity=? WHERE uid_validity=0`, a.newUIDValidity()); err != nil {
+		return err
+	}
+	if _, err := a.db.ExecContext(ctx, `UPDATE folders SET uid_next=1 WHERE uid_next<1`); err != nil {
+		return err
+	}
+	if _, err := a.db.ExecContext(ctx, `UPDATE folders SET highest_modseq=1 WHERE highest_modseq<1`); err != nil {
+		return err
+	}
+	if err := a.backfillIMAPUIDs(ctx); err != nil {
+		return err
+	}
+	_, err := a.db.ExecContext(ctx, `CREATE UNIQUE INDEX IF NOT EXISTS idx_messages_folder_imap_uid ON messages(folder_id, imap_uid) WHERE folder_id IS NOT NULL AND imap_uid > 0`)
+	return err
+}
+
+func (a *App) ensureTableColumn(ctx context.Context, table, column, alterSQL string) error {
+	rows, err := a.db.QueryContext(ctx, `PRAGMA table_info(`+table+`)`)
+	if err != nil {
+		return err
+	}
+	defer rows.Close()
+	for rows.Next() {
+		var cid int
+		var name, typ string
+		var notNull int
+		var dflt any
+		var pk int
+		if err := rows.Scan(&cid, &name, &typ, &notNull, &dflt, &pk); err != nil {
+			return err
+		}
+		if name == column {
+			return nil
+		}
+	}
+	if err := rows.Err(); err != nil {
+		return err
+	}
+	_, err = a.db.ExecContext(ctx, alterSQL)
+	return err
+}
+
+func (a *App) backfillIMAPUIDs(ctx context.Context) error {
+	rows, err := a.db.QueryContext(ctx, `SELECT id FROM folders ORDER BY created_at,id`)
+	if err != nil {
+		return err
+	}
+	var folderIDs []string
+	for rows.Next() {
+		var folderID string
+		if err := rows.Scan(&folderID); err != nil {
+			rows.Close()
+			return err
+		}
+		folderIDs = append(folderIDs, folderID)
+	}
+	if err := rows.Err(); err != nil {
+		rows.Close()
+		return err
+	}
+	if err := rows.Close(); err != nil {
+		return err
+	}
+	for _, folderID := range folderIDs {
+		if err := a.backfillFolderIMAPUIDs(ctx, folderID); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (a *App) backfillFolderIMAPUIDs(ctx context.Context, folderID string) error {
+	rows, err := a.db.QueryContext(ctx, `SELECT id FROM messages WHERE folder_id=? AND imap_uid=0 ORDER BY created_at,id`, folderID)
+	if err != nil {
+		return err
+	}
+	var messageIDs []string
+	for rows.Next() {
+		var messageID string
+		if err := rows.Scan(&messageID); err != nil {
+			rows.Close()
+			return err
+		}
+		messageIDs = append(messageIDs, messageID)
+	}
+	if err := rows.Err(); err != nil {
+		rows.Close()
+		return err
+	}
+	if err := rows.Close(); err != nil {
+		return err
+	}
+	for _, messageID := range messageIDs {
+		meta, err := a.nextIMAPMetadata(ctx, a.db, folderID)
+		if err != nil {
+			return err
+		}
+		if _, err := a.db.ExecContext(ctx, `UPDATE messages SET imap_uid=?,imap_modseq=? WHERE id=?`, meta.UID, meta.ModSeq, messageID); err != nil {
+			return err
+		}
+	}
+	var maxUID, maxModSeq int64
+	if err := a.db.QueryRowContext(ctx, `SELECT COALESCE(MAX(imap_uid),0),COALESCE(MAX(imap_modseq),1) FROM messages WHERE folder_id=?`, folderID).Scan(&maxUID, &maxModSeq); err != nil {
+		return err
+	}
+	_, err = a.db.ExecContext(ctx, `UPDATE folders SET uid_next=MAX(uid_next,?),highest_modseq=MAX(highest_modseq,?) WHERE id=?`, maxUID+1, maxModSeq, folderID)
+	return err
+}
+
+func (a *App) newUIDValidity() int64 {
+	value := a.now().UTC().Unix()
+	if value <= 0 {
+		return time.Now().UTC().Unix()
+	}
+	return value
+}
+
+func (a *App) nextIMAPMetadata(ctx context.Context, db dbExecutor, folderID string) (imapMetadata, error) {
+	if folderID == "" {
+		return imapMetadata{}, nil
+	}
+	rowDB, ok := db.(dbQueryer)
+	if !ok {
+		return imapMetadata{}, nil
+	}
+	var nextUID, highestModSeq int64
+	err := rowDB.QueryRowContext(ctx, `SELECT uid_next,highest_modseq FROM folders WHERE id=?`, folderID).Scan(&nextUID, &highestModSeq)
+	if err != nil {
+		return imapMetadata{}, err
+	}
+	if nextUID < 1 {
+		nextUID = 1
+	}
+	nextModSeq := highestModSeq + 1
+	if nextModSeq < 1 {
+		nextModSeq = 1
+	}
+	if _, err := db.ExecContext(ctx, `UPDATE folders SET uid_next=?,highest_modseq=MAX(highest_modseq,?) WHERE id=?`, nextUID+1, nextModSeq, folderID); err != nil {
+		return imapMetadata{}, err
+	}
+	return imapMetadata{UID: nextUID, ModSeq: nextModSeq}, nil
+}
+
+func (a *App) bumpFolderModSeq(ctx context.Context, folderID string) (int64, error) {
+	return a.bumpFolderModSeqWithDB(ctx, a.db, folderID)
+}
+
+func (a *App) bumpFolderModSeqWithDB(ctx context.Context, db dbExecutor, folderID string) (int64, error) {
+	if folderID == "" {
+		return 0, nil
+	}
+	rowDB, ok := db.(dbQueryer)
+	if !ok {
+		return 0, nil
+	}
+	var current int64
+	if err := rowDB.QueryRowContext(ctx, `SELECT highest_modseq FROM folders WHERE id=?`, folderID).Scan(&current); err != nil {
+		if err == sql.ErrNoRows {
+			return 0, nil
+		}
+		return 0, err
+	}
+	next := current + 1
+	if next < 1 || next == math.MaxInt64 {
+		next = current
+	}
+	if _, err := db.ExecContext(ctx, `UPDATE folders SET highest_modseq=MAX(highest_modseq,?) WHERE id=?`, next, folderID); err != nil {
+		return 0, err
+	}
+	return next, nil
+}
+
+func (a *App) touchMessageIMAPModSeq(ctx context.Context, messageID string) error {
+	var folderID sql.NullString
+	if err := a.db.QueryRowContext(ctx, `SELECT folder_id FROM messages WHERE id=?`, messageID).Scan(&folderID); err != nil {
+		return err
+	}
+	if !folderID.Valid || folderID.String == "" {
+		return nil
+	}
+	modSeq, err := a.bumpFolderModSeq(ctx, folderID.String)
+	if err != nil {
+		return err
+	}
+	if modSeq == 0 {
+		return nil
+	}
+	_, err = a.db.ExecContext(ctx, `UPDATE messages SET imap_modseq=? WHERE id=?`, modSeq, messageID)
+	return err
+}
+
+func (a *App) updateMessageModSeq(ctx context.Context, messageID string, folderID string) (int64, error) {
+	if folderID == "" {
+		var dbFolderID sql.NullString
+		if err := a.db.QueryRowContext(ctx, `SELECT folder_id FROM messages WHERE id=?`, messageID).Scan(&dbFolderID); err != nil {
+			return 0, err
+		}
+		if !dbFolderID.Valid || dbFolderID.String == "" {
+			return 0, nil
+		}
+		folderID = dbFolderID.String
+	}
+	modSeq, err := a.bumpFolderModSeq(ctx, folderID)
+	if err != nil {
+		return 0, err
+	}
+	if modSeq == 0 {
+		return 0, nil
+	}
+	_, err = a.db.ExecContext(ctx, `UPDATE messages SET imap_modseq=? WHERE id=?`, modSeq, messageID)
+	return modSeq, err
+}

apps/api/internal/app/mail_handlers.go

@@ -9,6 +9,7 @@ import (
 	"fmt"
 	"io"
 	"net/http"
+	"net/textproto"
 	"os"
 	"path/filepath"
 	"strconv"
@@ -47,6 +48,7 @@ type storedMessage struct {
 	IsRead         bool
 	IsStarred      bool
 	RawPath        string
+	Authentication MailAuthentication
 }
 
 func (a *App) handleMyMailboxes(w http.ResponseWriter, r *http.Request) {
@@ -84,7 +86,8 @@ func (a *App) handleMailFolders(w http.ResponseWriter, r *http.Request) {
 	}
 	rows, err := a.db.QueryContext(r.Context(), `SELECT f.id,f.name,f.role,
 		COALESCE(SUM(CASE WHEN m.is_read=0 THEN 1 ELSE 0 END),0) AS unread,
-		COUNT(m.id) AS total
+		COUNT(m.id) AS total,
+		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
 		ORDER BY CASE f.role WHEN 'inbox' THEN 1 WHEN 'sent' THEN 2 WHEN 'drafts' THEN 3 WHEN 'archive' THEN 4 WHEN 'spam' THEN 5 WHEN 'trash' THEN 6 ELSE 99 END, f.name`, mb.ID)
@@ -96,7 +99,7 @@ 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); err != nil {
+		if err := rows.Scan(&f.ID, &f.Name, &f.Role, &f.UnreadCount, &f.TotalCount, &f.UIDValidity, &f.UIDNext, &f.HighestModSeq); err != nil {
 			respondError(w, http.StatusInternalServerError, "failed to scan folders")
 			return
 		}
@@ -154,7 +157,7 @@ func (a *App) respondMailMessageList(w http.ResponseWriter, r *http.Request, whe
 		args = append(args, like, like, like, like, like)
 	}
 	args = append(args, limit+1, offset)
-	query := `SELECT m.id,m.mailbox_id,m.folder_id,COALESCE(f.name,''),m.message_uid,m.message_id,m.subject,m.from_addr,COALESCE(m.from_name,''),m.to_addrs,m.cc_addrs,m.bcc_addrs,m.sent_at,m.received_at,m.snippet,m.is_read,m.is_starred,m.has_attachments,m.size_bytes
+	query := `SELECT m.id,m.mailbox_id,m.folder_id,COALESCE(f.name,''),m.message_uid,m.imap_uid,m.imap_modseq,m.message_id,m.subject,m.from_addr,COALESCE(m.from_name,''),m.to_addrs,m.cc_addrs,m.bcc_addrs,m.sent_at,m.received_at,m.snippet,m.is_read,m.is_starred,m.has_attachments,m.size_bytes
 		FROM messages m LEFT JOIN folders f ON f.id=m.folder_id WHERE ` + where + ` ORDER BY m.received_at DESC LIMIT ? OFFSET ?`
 	rows, err := a.db.QueryContext(r.Context(), query, args...)
 	if err != nil {
@@ -328,7 +331,15 @@ func (a *App) handleMailMessage(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	if r.URL.Query().Get("markRead") != "0" && !msg.IsRead && userHasPermission(currentUser(r), PermissionMailOrganize) {
+		read := true
+		if err := a.updateMessageMaildirFlags(r.Context(), msg.ID, &read, nil); err != nil {
+			a.log.Warn("failed to update maildir read flag", "message_id", msg.ID, "error", err)
+		}
+		if modSeq, err := a.updateMessageModSeq(r.Context(), msg.ID, msg.FolderID); err == nil && modSeq > 0 {
+			_, _ = a.db.ExecContext(r.Context(), `UPDATE messages SET is_read=1, imap_modseq=?, updated_at=? WHERE id=?`, modSeq, a.now().UTC().Format(time.RFC3339Nano), msg.ID)
+		} else {
 			_, _ = a.db.ExecContext(r.Context(), `UPDATE messages SET is_read=1, updated_at=? WHERE id=?`, a.now().UTC().Format(time.RFC3339Nano), msg.ID)
+		}
 		msg.IsRead = true
 	}
 	respondJSON(w, http.StatusOK, msg)
@@ -420,6 +431,10 @@ func (a *App) handleMailSend(w http.ResponseWriter, r *http.Request) {
 			respondError(w, http.StatusForbidden, err.Error())
 			return
 		}
+		if errors.Is(err, errMailboxQuotaExceeded) {
+			respondError(w, http.StatusInsufficientStorage, err.Error())
+			return
+		}
 		respondError(w, http.StatusInternalServerError, err.Error())
 		return
 	}
@@ -431,6 +446,7 @@ var errInvalidMIME = errors.New("invalid mime message")
 var errAttachmentTooLarge = errors.New("attachment size exceeds permission limit")
 var errSMTPRateLimited = errors.New("smtp send rate limit exceeded")
 var errSenderNotAuthorized = errors.New("sender address is not authorized")
+var errMailboxQuotaExceeded = errors.New("mailbox quota exceeded")
 
 func (a *App) sendMailNow(ctx context.Context, user *User, mb *Mailbox, req mailComposeInput) (*MailMessage, error) {
 	if err := validateAttachmentLimit(req.Attachments, userLimits(user)); err != nil {
@@ -480,6 +496,10 @@ func (a *App) sendMailNow(ctx context.Context, user *User, mb *Mailbox, req mail
 	if err != nil {
 		return nil, fmt.Errorf("failed to store sent message: %w", err)
 	}
+	if err := a.writeRawMessageToMaildir(ctx, sentID, mimeBytes, false); err != nil {
+		a.deleteMessage(ctx, sentID)
+		return nil, fmt.Errorf("failed to store sent message in maildir: %w", err)
+	}
 	a.recordSendAudit(ctx, sendAuditAccepted, sendQueueStatusQueued, sendAuditInput{UserID: user.ID, MailboxID: mb.ID, SentMessageID: sentID, Source: sendSourceWebmail, MailFrom: fromAddress, HeaderFrom: fromAddress, Recipients: allRecipients})
 	if _, err := a.enqueueSend(ctx, sendQueueInput{UserID: user.ID, MailboxID: mb.ID, SentMessageID: sentID, MessageID: messageID, Source: sendSourceWebmail, MailFrom: fromAddress, HeaderFrom: fromAddress, Recipients: allRecipients, MIMEBytes: mimeBytes, Now: now}); err != nil {
 		a.deleteMessage(ctx, sentID)
@@ -503,7 +523,9 @@ func (a *App) sendMailNow(ctx context.Context, user *User, mb *Mailbox, req mail
 			copyMsg.RecipientAddr = normalizeEmail(rcpt)
 			copyMsg.MessageUID = newID("uid")
 			copyMsg.IsRead = false
-			_, _ = a.insertMessage(ctx, copyMsg, req.Attachments)
+			if copyID, err := a.insertMessage(ctx, copyMsg, req.Attachments); err == nil {
+				_ = a.writeStoredMessageToMaildir(ctx, copyID, copyMsg, req.Attachments)
+			}
 			continue
 		}
 		if rcptMailbox.Status != "active" {
@@ -514,7 +536,9 @@ func (a *App) sendMailNow(ctx context.Context, user *User, mb *Mailbox, req mail
 				copyMsg.RecipientAddr = normalizeEmail(rcpt)
 				copyMsg.MessageUID = newID("uid")
 				copyMsg.IsRead = false
-				_, _ = a.insertMessage(ctx, copyMsg, req.Attachments)
+				if copyID, err := a.insertMessage(ctx, copyMsg, req.Attachments); err == nil {
+					_ = a.writeStoredMessageToMaildir(ctx, copyID, copyMsg, req.Attachments)
+				}
 			}
 			continue
 		}
@@ -528,6 +552,7 @@ func (a *App) sendMailNow(ctx context.Context, user *User, mb *Mailbox, req mail
 		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)
 		}
 	}
@@ -767,6 +792,11 @@ func (a *App) handleSaveDraft(w http.ResponseWriter, r *http.Request) {
 			respondError(w, http.StatusInternalServerError, "failed to save draft")
 			return
 		}
+		if err := a.writeStoredMessageToMaildir(r.Context(), draftID, stored, attachments); err != nil {
+			a.deleteMessage(r.Context(), draftID)
+			respondError(w, http.StatusInternalServerError, "failed to save draft")
+			return
+		}
 		msg, _ := a.messageByID(r.Context(), draftID, true)
 		respondJSON(w, http.StatusCreated, msg)
 		return
@@ -796,8 +826,13 @@ func (a *App) handleSaveDraft(w http.ResponseWriter, r *http.Request) {
 		_ = a.db.QueryRowContext(r.Context(), `SELECT COALESCE(SUM(size_bytes),0) FROM attachments WHERE message_id=?`, draftID).Scan(&attachmentBytes)
 		size += attachmentBytes
 	}
-	_, err = a.db.ExecContext(r.Context(), `UPDATE messages SET subject=?,to_addrs=?,cc_addrs=?,bcc_addrs=?,sent_at=?,received_at=?,snippet=?,body_text=?,body_html=?,is_read=1,has_attachments=?,size_bytes=?,updated_at=? WHERE id=?`,
-		subject, jsonEncode(compose.To), jsonEncode(compose.CC), jsonEncode(compose.BCC), now.Format(time.RFC3339Nano), now.Format(time.RFC3339Nano), snippetFrom(compose.Text, compose.HTML), compose.Text, compose.HTML, boolInt(hasAttachments), size, now.Format(time.RFC3339Nano), draftID)
+	modSeq, err := a.updateMessageModSeq(r.Context(), draftID, existing.FolderID)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to update draft")
+		return
+	}
+	_, err = a.db.ExecContext(r.Context(), `UPDATE messages SET subject=?,to_addrs=?,cc_addrs=?,bcc_addrs=?,sent_at=?,received_at=?,snippet=?,body_text=?,body_html=?,is_read=1,has_attachments=?,size_bytes=?,imap_modseq=CASE WHEN ? > 0 THEN ? ELSE imap_modseq END,updated_at=? WHERE id=?`,
+		subject, jsonEncode(compose.To), jsonEncode(compose.CC), jsonEncode(compose.BCC), now.Format(time.RFC3339Nano), now.Format(time.RFC3339Nano), snippetFrom(compose.Text, compose.HTML), compose.Text, compose.HTML, boolInt(hasAttachments), size, modSeq, modSeq, now.Format(time.RFC3339Nano), draftID)
 	if err != nil {
 		respondError(w, http.StatusInternalServerError, "failed to update draft")
 		return
@@ -810,6 +845,10 @@ func (a *App) handleSaveDraft(w http.ResponseWriter, r *http.Request) {
 			}
 		}
 	}
+	if err := a.rewriteMessageMaildir(r.Context(), draftID); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to update draft")
+		return
+	}
 	msg, _ := a.messageByID(r.Context(), draftID, true)
 	respondJSON(w, http.StatusOK, msg)
 }
@@ -820,11 +859,13 @@ func (a *App) handleDeleteDraft(w http.ResponseWriter, r *http.Request) {
 		respondError(w, http.StatusNotFound, "draft not found")
 		return
 	}
+	a.deleteMessageMaildirFile(r.Context(), msg.ID)
 	a.deleteMessageFiles(r.Context(), msg.ID)
 	if _, err := a.db.ExecContext(r.Context(), `DELETE FROM messages WHERE id=?`, msg.ID); err != nil {
 		respondError(w, http.StatusInternalServerError, "failed to delete draft")
 		return
 	}
+	_, _ = a.bumpFolderModSeq(r.Context(), msg.FolderID)
 	respondJSON(w, http.StatusOK, map[string]any{"ok": true})
 }
 
@@ -873,6 +914,214 @@ func (a *App) handleScheduledSends(w http.ResponseWriter, r *http.Request) {
 	respondJSON(w, http.StatusOK, map[string]any{"items": items})
 }
 
+func (a *App) handleSendQueue(w http.ResponseWriter, r *http.Request) {
+	user := currentUser(r)
+	mb, err := a.mailboxForCurrentUser(r)
+	if err != nil {
+		respondError(w, http.StatusNotFound, "mailbox not found")
+		return
+	}
+	status := strings.TrimSpace(r.URL.Query().Get("status"))
+	cursor, _ := strconv.Atoi(r.URL.Query().Get("cursor"))
+	if cursor < 0 {
+		cursor = 0
+	}
+	limit := 30
+	args := []any{user.ID, mb.ID}
+	where := `mb.user_id=? AND sq.mailbox_id=?`
+	if status != "" {
+		if !validSendQueueStatus(status) {
+			badRequest(w, errors.New("invalid send queue status"))
+			return
+		}
+		where += ` AND sq.status=?`
+		args = append(args, status)
+	}
+	args = append(args, limit+1, cursor)
+	rows, err := a.db.QueryContext(r.Context(), `SELECT sq.id,sq.mailbox_id,sq.sent_message_id,sq.message_id,COALESCE(m.subject,''),sq.source,sq.mail_from,sq.header_from,sq.recipients_json,sq.status,sq.attempt_count,sq.max_attempts,sq.next_attempt_at,sq.last_error,sq.created_at,sq.updated_at,sq.delivered_at
+		FROM send_queue sq JOIN mailboxes mb ON mb.id=sq.mailbox_id LEFT JOIN messages m ON m.id=sq.sent_message_id WHERE `+where+` ORDER BY sq.created_at DESC, sq.id DESC LIMIT ? OFFSET ?`, args...)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load send queue")
+		return
+	}
+	defer rows.Close()
+	items := []SendQueueEntry{}
+	for rows.Next() {
+		item, err := scanSendQueueEntry(rows)
+		if err != nil {
+			respondError(w, http.StatusInternalServerError, "failed to scan send queue")
+			return
+		}
+		items = append(items, item)
+	}
+	if err := rows.Err(); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load send queue")
+		return
+	}
+	next := ""
+	if len(items) > limit {
+		items = items[:limit]
+		next = strconv.Itoa(cursor + limit)
+	}
+	respondJSON(w, http.StatusOK, map[string]any{"items": items, "nextCursor": next})
+}
+
+func (a *App) handleSendQueueAudit(w http.ResponseWriter, r *http.Request) {
+	user := currentUser(r)
+	id := strings.TrimSpace(chi.URLParam(r, "id"))
+	if !a.sendQueueBelongsToUser(r.Context(), id, user.ID) {
+		respondError(w, http.StatusNotFound, "send queue item not found")
+		return
+	}
+	rows, err := a.db.QueryContext(r.Context(), `SELECT id,queue_id,mailbox_id,sent_message_id,source,event,status,mail_from,header_from,recipients_json,error,created_at
+		FROM send_audit_events WHERE queue_id=? ORDER BY created_at ASC, id ASC`, id)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load send audit")
+		return
+	}
+	defer rows.Close()
+	items := []SendAuditEvent{}
+	for rows.Next() {
+		var item SendAuditEvent
+		var recipientsJSON, createdAt string
+		if err := rows.Scan(&item.ID, &item.QueueID, &item.MailboxID, &item.SentMessageID, &item.Source, &item.Event, &item.Status, &item.MailFrom, &item.HeaderFrom, &recipientsJSON, &item.Error, &createdAt); err != nil {
+			respondError(w, http.StatusInternalServerError, "failed to scan send audit")
+			return
+		}
+		item.Recipients = jsonDecodeSlice(recipientsJSON)
+		item.CreatedAt = parseTime(createdAt)
+		items = append(items, item)
+	}
+	if err := rows.Err(); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load send audit")
+		return
+	}
+	respondJSON(w, http.StatusOK, map[string]any{"items": items})
+}
+
+func (a *App) handleRetrySendQueue(w http.ResponseWriter, r *http.Request) {
+	user := currentUser(r)
+	id := strings.TrimSpace(chi.URLParam(r, "id"))
+	item, err := a.loadSendQueueEntryForUser(r.Context(), id, user.ID)
+	if err != nil {
+		respondError(w, http.StatusNotFound, "send queue item not found")
+		return
+	}
+	if item.Status != sendQueueStatusFailed {
+		badRequest(w, errors.New("send queue item is not failed"))
+		return
+	}
+	now := a.now().UTC().Format(time.RFC3339Nano)
+	res, err := a.db.ExecContext(r.Context(), `UPDATE send_queue SET status=?,attempt_count=0,next_attempt_at=?,last_error='',updated_at=?,delivered_at=NULL WHERE id=? AND status=? AND EXISTS (SELECT 1 FROM mailboxes mb WHERE mb.id=send_queue.mailbox_id AND mb.user_id=?)`,
+		sendQueueStatusQueued, now, now, id, sendQueueStatusFailed, user.ID)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to retry send queue item")
+		return
+	}
+	if n, _ := res.RowsAffected(); n == 0 {
+		respondError(w, http.StatusNotFound, "send queue item not found")
+		return
+	}
+	a.deleteSendQueueDeliveredMarker(id)
+	a.recordSendAudit(r.Context(), sendAuditRetry, sendQueueStatusQueued, sendAuditInput{
+		QueueID:       item.ID,
+		UserID:        user.ID,
+		MailboxID:     item.MailboxID,
+		SentMessageID: item.SentMessageID,
+		Source:        item.Source,
+		MailFrom:      item.MailFrom,
+		HeaderFrom:    item.HeaderFrom,
+		Recipients:    item.Recipients,
+	})
+	updated, err := a.loadSendQueueEntryForUser(r.Context(), id, user.ID)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load send queue item")
+		return
+	}
+	respondJSON(w, http.StatusOK, updated)
+}
+
+func (a *App) handleCancelSendQueue(w http.ResponseWriter, r *http.Request) {
+	user := currentUser(r)
+	id := strings.TrimSpace(chi.URLParam(r, "id"))
+	item, err := a.loadSendQueueEntryForUser(r.Context(), id, user.ID)
+	if err != nil {
+		respondError(w, http.StatusNotFound, "send queue item not found")
+		return
+	}
+	if item.Status != sendQueueStatusQueued && item.Status != sendQueueStatusFailed {
+		badRequest(w, errors.New("send queue item cannot be canceled"))
+		return
+	}
+	now := a.now().UTC().Format(time.RFC3339Nano)
+	res, err := a.db.ExecContext(r.Context(), `UPDATE send_queue SET status=?,last_error='',updated_at=? WHERE id=? AND status IN (?,?) AND EXISTS (SELECT 1 FROM mailboxes mb WHERE mb.id=send_queue.mailbox_id AND mb.user_id=?)`,
+		sendQueueStatusCanceled, now, id, sendQueueStatusQueued, sendQueueStatusFailed, user.ID)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to cancel send queue item")
+		return
+	}
+	if n, _ := res.RowsAffected(); n == 0 {
+		respondError(w, http.StatusNotFound, "send queue item not found")
+		return
+	}
+	a.deleteSendQueueDeliveredMarker(id)
+	a.recordSendAudit(r.Context(), sendAuditCanceled, sendQueueStatusCanceled, sendAuditInput{
+		QueueID:       item.ID,
+		UserID:        user.ID,
+		MailboxID:     item.MailboxID,
+		SentMessageID: item.SentMessageID,
+		Source:        item.Source,
+		MailFrom:      item.MailFrom,
+		HeaderFrom:    item.HeaderFrom,
+		Recipients:    item.Recipients,
+	})
+	updated, err := a.loadSendQueueEntryForUser(r.Context(), id, user.ID)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load send queue item")
+		return
+	}
+	respondJSON(w, http.StatusOK, updated)
+}
+
+type sendQueueEntryScanner interface{ Scan(dest ...any) error }
+
+func scanSendQueueEntry(row sendQueueEntryScanner) (SendQueueEntry, error) {
+	var item SendQueueEntry
+	var recipientsJSON, nextAttemptAt, createdAt, updatedAt string
+	var deliveredAt sql.NullString
+	err := row.Scan(&item.ID, &item.MailboxID, &item.SentMessageID, &item.MessageID, &item.Subject, &item.Source, &item.MailFrom, &item.HeaderFrom, &recipientsJSON, &item.Status, &item.AttemptCount, &item.MaxAttempts, &nextAttemptAt, &item.LastError, &createdAt, &updatedAt, &deliveredAt)
+	if err != nil {
+		return item, err
+	}
+	item.Recipients = jsonDecodeSlice(recipientsJSON)
+	item.NextAttemptAt = parseTime(nextAttemptAt)
+	item.CreatedAt = parseTime(createdAt)
+	item.UpdatedAt = parseTime(updatedAt)
+	item.DeliveredAt = nullableTime(deliveredAt)
+	return item, nil
+}
+
+func (a *App) loadSendQueueEntryForUser(ctx context.Context, id, userID string) (SendQueueEntry, error) {
+	row := a.db.QueryRowContext(ctx, `SELECT sq.id,sq.mailbox_id,sq.sent_message_id,sq.message_id,COALESCE(m.subject,''),sq.source,sq.mail_from,sq.header_from,sq.recipients_json,sq.status,sq.attempt_count,sq.max_attempts,sq.next_attempt_at,sq.last_error,sq.created_at,sq.updated_at,sq.delivered_at
+		FROM send_queue sq JOIN mailboxes mb ON mb.id=sq.mailbox_id LEFT JOIN messages m ON m.id=sq.sent_message_id WHERE sq.id=? AND mb.user_id=?`, id, userID)
+	return scanSendQueueEntry(row)
+}
+
+func (a *App) sendQueueBelongsToUser(ctx context.Context, id, userID string) bool {
+	var count int
+	_ = a.db.QueryRowContext(ctx, `SELECT COUNT(1) FROM send_queue sq JOIN mailboxes mb ON mb.id=sq.mailbox_id WHERE sq.id=? AND mb.user_id=?`, id, userID).Scan(&count)
+	return count > 0
+}
+
+func validSendQueueStatus(status string) bool {
+	switch status {
+	case sendQueueStatusQueued, sendQueueStatusSending, sendQueueStatusDelivered, sendQueueStatusFailed, sendQueueStatusCanceled:
+		return true
+	default:
+		return false
+	}
+}
+
 func (a *App) handleScheduleSend(w http.ResponseWriter, r *http.Request) {
 	var req struct {
 		MailboxID   string            `json:"mailboxId"`
@@ -1081,8 +1330,7 @@ func (a *App) processScheduledSend(ctx context.Context, id, mailboxID, draftID,
 		return
 	}
 	if draftID != "" {
-		a.deleteMessageFiles(ctx, draftID)
-		_, _ = a.db.ExecContext(ctx, `DELETE FROM messages WHERE id=?`, draftID)
+		a.deleteMessage(ctx, draftID)
 	}
 	sentAt := a.now().UTC().Format(time.RFC3339Nano)
 	if _, err := a.db.ExecContext(ctx, `UPDATE scheduled_sends SET status='sent',sent_at=?,updated_at=?,error='' WHERE id=?`, sentAt, sentAt, id); err != nil {
@@ -1120,7 +1368,16 @@ func (a *App) handleMarkRead(w http.ResponseWriter, r *http.Request) {
 	if req.Read != nil {
 		read = *req.Read
 	}
-	_, err = a.db.ExecContext(r.Context(), `UPDATE messages SET is_read=?, updated_at=? WHERE id=?`, boolInt(read), a.now().UTC().Format(time.RFC3339Nano), msg.ID)
+	if err := a.updateMessageMaildirFlags(r.Context(), msg.ID, &read, nil); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to update message")
+		return
+	}
+	modSeq, err := a.updateMessageModSeq(r.Context(), msg.ID, msg.FolderID)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to update message")
+		return
+	}
+	_, err = a.db.ExecContext(r.Context(), `UPDATE messages SET is_read=?, imap_modseq=CASE WHEN ? > 0 THEN ? ELSE imap_modseq END, updated_at=? WHERE id=?`, boolInt(read), modSeq, modSeq, a.now().UTC().Format(time.RFC3339Nano), msg.ID)
 	if err != nil {
 		respondError(w, http.StatusInternalServerError, "failed to update message")
 		return
@@ -1142,7 +1399,16 @@ func (a *App) handleStar(w http.ResponseWriter, r *http.Request) {
 	if req.Starred != nil {
 		starred = *req.Starred
 	}
-	_, err = a.db.ExecContext(r.Context(), `UPDATE messages SET is_starred=?, updated_at=? WHERE id=?`, boolInt(starred), a.now().UTC().Format(time.RFC3339Nano), msg.ID)
+	if err := a.updateMessageMaildirFlags(r.Context(), msg.ID, nil, &starred); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to update message")
+		return
+	}
+	modSeq, err := a.updateMessageModSeq(r.Context(), msg.ID, msg.FolderID)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to update message")
+		return
+	}
+	_, err = a.db.ExecContext(r.Context(), `UPDATE messages SET is_starred=?, imap_modseq=CASE WHEN ? > 0 THEN ? ELSE imap_modseq END, updated_at=? WHERE id=?`, boolInt(starred), modSeq, modSeq, a.now().UTC().Format(time.RFC3339Nano), msg.ID)
 	if err != nil {
 		respondError(w, http.StatusInternalServerError, "failed to update message")
 		return
@@ -1168,8 +1434,7 @@ func (a *App) handleMove(w http.ResponseWriter, r *http.Request) {
 		respondError(w, http.StatusInternalServerError, "failed to load folder")
 		return
 	}
-	_, err = a.db.ExecContext(r.Context(), `UPDATE messages SET folder_id=?, updated_at=? WHERE id=?`, folderID, a.now().UTC().Format(time.RFC3339Nano), msg.ID)
-	if err != nil {
+	if err := a.moveMessageMaildir(r.Context(), msg.ID, folderID); err != nil {
 		respondError(w, http.StatusInternalServerError, "failed to move message")
 		return
 	}
@@ -1183,14 +1448,20 @@ func (a *App) handleDeleteMessage(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	if strings.EqualFold(msg.Folder, "Trash") {
+		a.deleteMessageMaildirFile(r.Context(), msg.ID)
 		a.deleteMessageFiles(r.Context(), msg.ID)
 		_, err = a.db.ExecContext(r.Context(), `DELETE FROM messages WHERE id=?`, msg.ID)
+		if err == nil {
+			_, _ = a.bumpFolderModSeq(r.Context(), msg.FolderID)
+		}
 	} else {
 		trashID, e := a.ensureFolder(r.Context(), msg.MailboxID, "Trash")
 		if e != nil {
 			err = e
 		} else {
-			_, err = a.db.ExecContext(r.Context(), `UPDATE messages SET folder_id=?, updated_at=? WHERE id=?`, trashID, a.now().UTC().Format(time.RFC3339Nano), msg.ID)
+			if e := a.moveMessageMaildir(r.Context(), msg.ID, trashID); e != nil {
+				err = e
+			}
 		}
 	}
 	if err != nil {
@@ -1316,7 +1587,7 @@ func (a *App) loadMessageForRequest(r *http.Request, id string, includeBody bool
 }
 
 func (a *App) messageByID(ctx context.Context, id string, includeBody bool) (*MailMessage, error) {
-	row := a.db.QueryRowContext(ctx, `SELECT m.id,COALESCE(m.mailbox_id,''),COALESCE(m.recipient_addr,''),COALESCE(m.folder_id,''),COALESCE(f.name,'Unregistered'),m.message_uid,m.message_id,m.subject,m.from_addr,COALESCE(m.from_name,''),m.to_addrs,m.cc_addrs,m.bcc_addrs,m.sent_at,m.received_at,m.snippet,m.body_text,m.body_html,m.is_read,m.is_starred,m.has_attachments,m.size_bytes
+	row := a.db.QueryRowContext(ctx, `SELECT m.id,COALESCE(m.mailbox_id,''),COALESCE(m.recipient_addr,''),COALESCE(m.folder_id,''),COALESCE(f.name,'Unregistered'),m.message_uid,m.imap_uid,m.imap_modseq,m.message_id,m.subject,m.from_addr,COALESCE(m.from_name,''),m.to_addrs,m.cc_addrs,m.bcc_addrs,m.sent_at,m.received_at,m.snippet,m.body_text,m.body_html,m.is_read,m.is_starred,m.has_attachments,m.size_bytes,COALESCE(m.auth_results,''),COALESCE(m.auth_spf,'unknown'),COALESCE(m.auth_dkim,'unknown'),COALESCE(m.auth_dmarc,'unknown'),COALESCE(m.received_spf,'')
 		FROM messages m LEFT JOIN folders f ON f.id=m.folder_id WHERE m.id=?`, id)
 	msg, err := scanMessageFull(row, includeBody)
 	if err != nil {
@@ -1359,6 +1630,9 @@ func (a *App) insertMessageWithDB(ctx context.Context, db dbExecutor, msg stored
 			size += int64(len(decoded))
 		}
 	}
+	if err := a.ensureMailboxQuotaAvailable(ctx, db, msg.MailboxID, size); err != nil {
+		return "", err
+	}
 	var mailboxID, folderID any
 	if strings.TrimSpace(msg.MailboxID) != "" {
 		mailboxID = msg.MailboxID
@@ -1366,9 +1640,18 @@ func (a *App) insertMessageWithDB(ctx context.Context, db dbExecutor, msg stored
 	if strings.TrimSpace(msg.FolderID) != "" {
 		folderID = msg.FolderID
 	}
+	imapUID, imapModSeq := int64(0), int64(1)
+	if strings.TrimSpace(msg.FolderID) != "" {
+		meta, err := a.nextIMAPMetadata(ctx, db, msg.FolderID)
+		if err != nil {
+			return "", err
+		}
+		imapUID, imapModSeq = meta.UID, meta.ModSeq
+	}
 	recipientAddr := normalizeEmail(msg.RecipientAddr)
-	_, err := db.ExecContext(ctx, `INSERT INTO messages(id,mailbox_id,folder_id,recipient_addr,message_uid,message_id,subject,from_addr,from_name,to_addrs,cc_addrs,bcc_addrs,sent_at,received_at,snippet,body_text,body_html,is_read,is_starred,has_attachments,size_bytes,raw_path,created_at,updated_at)
-		VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)`, id, mailboxID, folderID, recipientAddr, msg.MessageUID, msg.MessageID, msg.Subject, msg.From, msg.FromName, jsonEncode(msg.To), jsonEncode(msg.CC), jsonEncode(msg.BCC), msg.SentAt.Format(time.RFC3339Nano), msg.ReceivedAt.Format(time.RFC3339Nano), msg.Snippet, msg.BodyText, msg.BodyHTML, boolInt(msg.IsRead), boolInt(msg.IsStarred), boolInt(hasAttachments), size, msg.RawPath, now, now)
+	auth := normalizeMailAuthentication(msg.Authentication)
+	_, err := db.ExecContext(ctx, `INSERT INTO messages(id,mailbox_id,folder_id,recipient_addr,message_uid,message_id,subject,from_addr,from_name,to_addrs,cc_addrs,bcc_addrs,sent_at,received_at,snippet,body_text,body_html,is_read,is_starred,has_attachments,size_bytes,auth_results,auth_spf,auth_dkim,auth_dmarc,received_spf,raw_path,imap_uid,imap_modseq,created_at,updated_at)
+		VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)`, id, mailboxID, folderID, recipientAddr, msg.MessageUID, msg.MessageID, msg.Subject, msg.From, msg.FromName, jsonEncode(msg.To), jsonEncode(msg.CC), jsonEncode(msg.BCC), msg.SentAt.Format(time.RFC3339Nano), msg.ReceivedAt.Format(time.RFC3339Nano), msg.Snippet, msg.BodyText, msg.BodyHTML, boolInt(msg.IsRead), boolInt(msg.IsStarred), boolInt(hasAttachments), size, auth.AuthenticationResults, auth.SPF, auth.DKIM, auth.DMARC, auth.ReceivedSPF, msg.RawPath, imapUID, imapModSeq, now, now)
 	if err != nil {
 		return "", err
 	}
@@ -1381,6 +1664,33 @@ func (a *App) insertMessageWithDB(ctx context.Context, db dbExecutor, msg stored
 	return id, nil
 }
 
+func (a *App) ensureMailboxQuotaAvailable(ctx context.Context, db dbExecutor, mailboxID string, addBytes int64) error {
+	mailboxID = strings.TrimSpace(mailboxID)
+	if mailboxID == "" || addBytes <= 0 {
+		return nil
+	}
+	rowDB, ok := db.(dbQueryer)
+	if !ok {
+		return nil
+	}
+	var quotaMB int64
+	if err := rowDB.QueryRowContext(ctx, `SELECT quota_mb FROM mailboxes WHERE id=? AND status='active'`, mailboxID).Scan(&quotaMB); err != nil {
+		return err
+	}
+	if quotaMB <= 0 {
+		return nil
+	}
+	var used int64
+	if err := rowDB.QueryRowContext(ctx, `SELECT COALESCE(SUM(size_bytes),0) FROM messages WHERE mailbox_id=?`, mailboxID).Scan(&used); err != nil {
+		return err
+	}
+	quotaBytes := quotaMB * 1024 * 1024
+	if used+addBytes > quotaBytes {
+		return fmt.Errorf("%w: used %d bytes, adding %d bytes exceeds %d bytes", errMailboxQuotaExceeded, used, addBytes, quotaBytes)
+	}
+	return nil
+}
+
 func (a *App) storeAttachment(ctx context.Context, messageID string, input AttachmentInput) error {
 	return a.storeAttachmentWithDB(ctx, a.db, messageID, input)
 }
@@ -1578,8 +1888,14 @@ func (a *App) deleteMessageFiles(ctx context.Context, messageID string) {
 }
 
 func (a *App) deleteMessage(ctx context.Context, messageID string) {
+	var folderID sql.NullString
+	_ = a.db.QueryRowContext(ctx, `SELECT folder_id FROM messages WHERE id=?`, messageID).Scan(&folderID)
+	a.deleteMessageMaildirFile(ctx, messageID)
 	a.deleteMessageFiles(ctx, messageID)
 	_, _ = a.db.ExecContext(ctx, `DELETE FROM messages WHERE id=?`, messageID)
+	if folderID.Valid && folderID.String != "" {
+		_, _ = a.bumpFolderModSeq(ctx, folderID.String)
+	}
 }
 
 type messageSummaryScanner interface{ Scan(dest ...any) error }
@@ -1588,7 +1904,7 @@ func scanAdminMessageSummary(row messageSummaryScanner) (MailMessage, error) {
 	var msg MailMessage
 	var toJSON, ccJSON, bccJSON, sent, received string
 	var read, starred, hasAtt int
-	err := row.Scan(&msg.ID, &msg.MailboxID, &msg.MailboxAddress, &msg.OwnerEmail, &msg.RecipientAddr, &msg.FolderID, &msg.Folder, &msg.MessageUID, &msg.MessageID, &msg.Subject, &msg.From, &msg.FromName, &toJSON, &ccJSON, &bccJSON, &sent, &received, &msg.Snippet, &read, &starred, &hasAtt, &msg.SizeBytes)
+	err := row.Scan(&msg.ID, &msg.MailboxID, &msg.MailboxAddress, &msg.OwnerEmail, &msg.RecipientAddr, &msg.FolderID, &msg.Folder, &msg.MessageUID, &msg.IMAPUID, &msg.IMAPModSeq, &msg.MessageID, &msg.Subject, &msg.From, &msg.FromName, &toJSON, &ccJSON, &bccJSON, &sent, &received, &msg.Snippet, &read, &starred, &hasAtt, &msg.SizeBytes)
 	if err != nil {
 		return msg, err
 	}
@@ -1602,7 +1918,7 @@ func scanMessageSummary(row messageSummaryScanner) (MailMessage, error) {
 	var msg MailMessage
 	var toJSON, ccJSON, bccJSON, sent, received string
 	var read, starred, hasAtt int
-	err := row.Scan(&msg.ID, &msg.MailboxID, &msg.FolderID, &msg.Folder, &msg.MessageUID, &msg.MessageID, &msg.Subject, &msg.From, &msg.FromName, &toJSON, &ccJSON, &bccJSON, &sent, &received, &msg.Snippet, &read, &starred, &hasAtt, &msg.SizeBytes)
+	err := row.Scan(&msg.ID, &msg.MailboxID, &msg.FolderID, &msg.Folder, &msg.MessageUID, &msg.IMAPUID, &msg.IMAPModSeq, &msg.MessageID, &msg.Subject, &msg.From, &msg.FromName, &toJSON, &ccJSON, &bccJSON, &sent, &received, &msg.Snippet, &read, &starred, &hasAtt, &msg.SizeBytes)
 	if err != nil {
 		return msg, err
 	}
@@ -1615,17 +1931,109 @@ func scanMessageSummary(row messageSummaryScanner) (MailMessage, error) {
 func scanMessageFull(row messageSummaryScanner, includeBody bool) (MailMessage, error) {
 	var msg MailMessage
 	var toJSON, ccJSON, bccJSON, sent, received string
+	var auth MailAuthentication
 	var read, starred, hasAtt int
 	var bodyText, bodyHTML string
-	err := row.Scan(&msg.ID, &msg.MailboxID, &msg.RecipientAddr, &msg.FolderID, &msg.Folder, &msg.MessageUID, &msg.MessageID, &msg.Subject, &msg.From, &msg.FromName, &toJSON, &ccJSON, &bccJSON, &sent, &received, &msg.Snippet, &bodyText, &bodyHTML, &read, &starred, &hasAtt, &msg.SizeBytes)
+	err := row.Scan(&msg.ID, &msg.MailboxID, &msg.RecipientAddr, &msg.FolderID, &msg.Folder, &msg.MessageUID, &msg.IMAPUID, &msg.IMAPModSeq, &msg.MessageID, &msg.Subject, &msg.From, &msg.FromName, &toJSON, &ccJSON, &bccJSON, &sent, &received, &msg.Snippet, &bodyText, &bodyHTML, &read, &starred, &hasAtt, &msg.SizeBytes, &auth.AuthenticationResults, &auth.SPF, &auth.DKIM, &auth.DMARC, &auth.ReceivedSPF)
 	if err != nil {
 		return msg, err
 	}
 	msg.To, msg.CC, msg.BCC = jsonDecodeSlice(toJSON), jsonDecodeSlice(ccJSON), jsonDecodeSlice(bccJSON)
 	msg.SentAt, msg.ReceivedAt = parseTime(sent), parseTime(received)
 	msg.IsRead, msg.IsStarred, msg.HasAttachments = intBool(read), intBool(starred), intBool(hasAtt)
+	msg.Authentication = normalizeMailAuthentication(auth)
 	if includeBody {
 		msg.BodyText, msg.BodyHTML = bodyText, bodyHTML
 	}
 	return msg, nil
 }
+
+func parseMailAuthentication(header textproto.MIMEHeader) MailAuthentication {
+	authResults := strings.Join(header.Values("Authentication-Results"), "\n")
+	receivedSPF := strings.Join(header.Values("Received-SPF"), "\n")
+	auth := MailAuthentication{
+		AuthenticationResults: strings.TrimSpace(authResults),
+		ReceivedSPF:           strings.TrimSpace(receivedSPF),
+		SPF:                   "unknown",
+		DKIM:                  "unknown",
+		DMARC:                 "unknown",
+	}
+	for _, value := range header.Values("Authentication-Results") {
+		for _, field := range strings.FieldsFunc(value, func(r rune) bool {
+			return r == ';' || r == '\r' || r == '\n'
+		}) {
+			key, result, ok := authMethodResult(field)
+			if !ok {
+				continue
+			}
+			switch key {
+			case "spf":
+				auth.SPF = result
+			case "dkim":
+				auth.DKIM = result
+			case "dmarc":
+				auth.DMARC = result
+			}
+		}
+	}
+	if auth.SPF == "unknown" {
+		for _, value := range header.Values("Received-SPF") {
+			if result := firstAuthStatus(value); result != "unknown" {
+				auth.SPF = result
+				break
+			}
+		}
+	}
+	return normalizeMailAuthentication(auth)
+}
+
+func authMethodResult(value string) (string, string, bool) {
+	value = strings.TrimSpace(value)
+	if value == "" {
+		return "", "", false
+	}
+	parts := strings.SplitN(value, "=", 2)
+	if len(parts) != 2 {
+		return "", "", false
+	}
+	method := strings.ToLower(strings.TrimSpace(parts[0]))
+	if method != "spf" && method != "dkim" && method != "dmarc" {
+		return "", "", false
+	}
+	return method, firstAuthStatus(parts[1]), true
+}
+
+func firstAuthStatus(value string) string {
+	value = strings.TrimSpace(value)
+	if value == "" {
+		return "unknown"
+	}
+	value = strings.ToLower(strings.Fields(value)[0])
+	if idx := strings.IndexAny(value, "();,"); idx >= 0 {
+		value = value[:idx]
+	}
+	switch value {
+	case "pass", "fail", "softfail", "neutral", "temperror", "permerror", "none":
+		return value
+	default:
+		return "unknown"
+	}
+}
+
+func normalizeMailAuthentication(auth MailAuthentication) MailAuthentication {
+	auth.AuthenticationResults = strings.TrimSpace(auth.AuthenticationResults)
+	auth.ReceivedSPF = strings.TrimSpace(auth.ReceivedSPF)
+	auth.SPF = normalizeAuthStatus(auth.SPF)
+	auth.DKIM = normalizeAuthStatus(auth.DKIM)
+	auth.DMARC = normalizeAuthStatus(auth.DMARC)
+	return auth
+}
+
+func normalizeAuthStatus(value string) string {
+	switch strings.ToLower(strings.TrimSpace(value)) {
+	case "pass", "fail", "softfail", "neutral", "temperror", "permerror", "none":
+		return strings.ToLower(strings.TrimSpace(value))
+	default:
+		return "unknown"
+	}
+}

apps/api/internal/app/maildir_health.go

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

apps/api/internal/app/maildir_sync.go

@@ -49,54 +49,79 @@ func (a *App) maildirWorker(ctx context.Context) {
 	if interval <= 0 {
 		interval = 30 * time.Second
 	}
+	nextRunAt := a.now().UTC()
+	a.maildirHealth.markWorkerStarted(&nextRunAt)
 	a.log.Info("maildir sync worker started", "root", a.cfg.MaildirRoot, "interval", interval.String())
-	if n, err := a.syncMaildirOnce(ctx); err != nil {
+	if counts, err := a.syncMaildirOnceTracked(ctx, interval); err != nil {
 		a.log.Warn("initial maildir sync failed", "error", err)
-	} else if n > 0 {
-		a.log.Info("initial maildir sync imported messages", "count", n)
+	} else if n := counts.total(); n > 0 {
+		a.log.Info("initial maildir sync processed messages", "count", n)
 	}
 	ticker := time.NewTicker(interval)
 	defer ticker.Stop()
 	for {
 		select {
 		case <-ctx.Done():
+			a.maildirHealth.markWorkerStopped()
 			a.log.Info("maildir sync worker stopped")
 			return
 		case <-ticker.C:
-			n, err := a.syncMaildirOnce(ctx)
+			counts, err := a.syncMaildirOnceTracked(ctx, interval)
 			if err != nil {
 				a.log.Warn("maildir sync failed", "error", err)
 				continue
 			}
-			if n > 0 {
-				a.log.Info("maildir sync imported messages", "count", n)
+			if n := counts.total(); n > 0 {
+				a.log.Info("maildir sync processed messages", "count", n)
 			}
 		}
 	}
 }
 
+func (a *App) syncMaildirOnceTracked(ctx context.Context, interval time.Duration) (maildirSyncCounts, error) {
+	startedAt := a.now().UTC()
+	a.maildirHealth.markRunStarted(startedAt)
+	counts, err := a.syncMaildirOnceDetailed(ctx)
+	finishedAt := a.now().UTC()
+	var nextRunAt *time.Time
+	if interval > 0 && err == nil {
+		next := finishedAt.Add(interval)
+		nextRunAt = &next
+	}
+	a.maildirHealth.markRunFinished(finishedAt, counts, err, nextRunAt)
+	return counts, err
+}
+
 func (a *App) syncMaildirOnce(ctx context.Context) (int, error) {
+	counts, err := a.syncMaildirOnceDetailed(ctx)
+	return counts.total(), err
+}
+
+func (a *App) syncMaildirOnceDetailed(ctx context.Context) (maildirSyncCounts, error) {
 	root := strings.TrimSpace(a.cfg.MaildirRoot)
 	if root == "" {
-		return 0, nil
+		return maildirSyncCounts{}, nil
 	}
 	mailboxes, err := a.maildirMailboxes(ctx)
 	if err != nil {
-		return 0, err
+		return maildirSyncCounts{}, err
 	}
-	imported := 0
+	counts := maildirSyncCounts{}
 	for _, mb := range mailboxes {
 		if mb.Unregistered {
-			count, err := a.syncUnregisteredMaildir(ctx, mb)
+			mbCounts, err := a.syncUnregisteredMaildirDetailed(ctx, mb)
+			counts.FilesScanned += mbCounts.FilesScanned
+			counts.Imported += mbCounts.Imported
+			counts.FileErrors += mbCounts.FileErrors
+			counts.fileErrorDetails = append(counts.fileErrorDetails, mbCounts.fileErrorDetails...)
 			if err != nil {
-				return imported, err
+				return counts, err
 			}
-			imported += count
 			continue
 		}
 		folders, err := a.maildirFolders(ctx, mb.ID)
 		if err != nil {
-			return imported, err
+			return counts, err
 		}
 		base := filepath.Join(root, mb.Domain, mb.LocalPart, "Maildir")
 		for _, folder := range folders {
@@ -104,7 +129,7 @@ func (a *App) syncMaildirOnce(ctx context.Context) (int, error) {
 			for _, sub := range []string{"new", "cur"} {
 				select {
 				case <-ctx.Done():
-					return imported, ctx.Err()
+					return counts, ctx.Err()
 				default:
 				}
 				dir := filepath.Join(folderBase, sub)
@@ -113,26 +138,39 @@ func (a *App) syncMaildirOnce(ctx context.Context) (int, error) {
 					if errors.Is(err, os.ErrNotExist) {
 						continue
 					}
-					return imported, err
+					return counts, err
 				}
 				for _, entry := range entries {
 					if entry.IsDir() || strings.HasPrefix(entry.Name(), ".") {
 						continue
 					}
 					path := filepath.Join(dir, entry.Name())
+					counts.FilesScanned++
 					ok, err := a.syncMaildirFile(ctx, mb, folder, path)
 					if err != nil {
+						counts.FileErrors++
+						counts.fileErrorDetails = append(counts.fileErrorDetails, fmt.Sprintf("%s: %v", path, err))
 						a.log.Warn("maildir file import failed", "path", path, "error", err)
 						continue
 					}
 					if ok {
-						imported++
+						counts.Imported++
 					}
 				}
 			}
 		}
 	}
-	return imported, nil
+	backfilled, err := a.backfillSQLiteMessagesToMaildir(ctx)
+	if err != nil {
+		return counts, err
+	}
+	counts.Backfilled += backfilled
+	cleaned, err := a.cleanupMissingMaildirMessages(ctx)
+	if err != nil {
+		return counts, err
+	}
+	counts.Cleaned += cleaned
+	return counts, nil
 }
 
 func (a *App) maildirMailboxes(ctx context.Context) ([]maildirMailbox, error) {
@@ -179,12 +217,17 @@ func (a *App) maildirMailboxes(ctx context.Context) ([]maildirMailbox, error) {
 }
 
 func (a *App) syncUnregisteredMaildir(ctx context.Context, mb maildirMailbox) (int, error) {
+	counts, err := a.syncUnregisteredMaildirDetailed(ctx, mb)
+	return counts.Imported, err
+}
+
+func (a *App) syncUnregisteredMaildirDetailed(ctx context.Context, mb maildirMailbox) (maildirSyncCounts, error) {
 	base := filepath.Join(strings.TrimSpace(a.cfg.MaildirRoot), mb.Domain, mb.LocalPart, "Maildir")
-	imported := 0
+	counts := maildirSyncCounts{}
 	for _, sub := range []string{"new", "cur"} {
 		select {
 		case <-ctx.Done():
-			return imported, ctx.Err()
+			return counts, ctx.Err()
 		default:
 		}
 		dir := filepath.Join(base, sub)
@@ -193,24 +236,27 @@ func (a *App) syncUnregisteredMaildir(ctx context.Context, mb maildirMailbox) (i
 			if errors.Is(err, os.ErrNotExist) {
 				continue
 			}
-			return imported, err
+			return counts, err
 		}
 		for _, entry := range entries {
 			if entry.IsDir() || strings.HasPrefix(entry.Name(), ".") {
 				continue
 			}
 			path := filepath.Join(dir, entry.Name())
+			counts.FilesScanned++
 			ok, err := a.syncUnregisteredMaildirFile(ctx, mb, path)
 			if err != nil {
+				counts.FileErrors++
+				counts.fileErrorDetails = append(counts.fileErrorDetails, fmt.Sprintf("%s: %v", path, err))
 				a.log.Warn("unregistered maildir file import failed", "path", path, "error", err)
 				continue
 			}
 			if ok {
-				imported++
+				counts.Imported++
 			}
 		}
 	}
-	return imported, nil
+	return counts, nil
 }
 
 func (a *App) syncUnregisteredMaildirFile(ctx context.Context, mb maildirMailbox, path string) (bool, error) {
@@ -248,6 +294,7 @@ func (a *App) syncUnregisteredMaildirFile(ctx context.Context, mb maildirMailbox
 	if exists, err := a.unregisteredMaildirMessageExists(ctx, path, msg.MessageID, msg.RecipientAddr); err != nil {
 		return false, err
 	} else if exists {
+		a.attachUnregisteredMaildirRawPathToExisting(ctx, path, msg.MessageID, msg.RecipientAddr)
 		return false, nil
 	}
 	_, err = a.insertMessage(ctx, msg, attachments)
@@ -291,7 +338,7 @@ func (a *App) syncMaildirFile(ctx context.Context, mb maildirMailbox, folder mai
 	}
 	msg.MailboxID = mb.ID
 	msg.FolderID = folder.ID
-	msg.IsRead = !strings.EqualFold(folder.Name, "Inbox")
+	msg.IsRead, msg.IsStarred = maildirFlagsFromPath(path, folder.Name)
 	msg.RawPath = path
 	if msg.MessageUID == "" {
 		msg.MessageUID = newID("uid")
@@ -311,6 +358,14 @@ func (a *App) syncMaildirFile(ctx context.Context, mb maildirMailbox, folder mai
 	if exists, err := a.maildirMessageExists(ctx, mb.ID, folder.ID, path, msg.MessageID); err != nil {
 		return false, err
 	} else if exists {
+		if _, err := a.syncExistingMaildirMessageState(ctx, mb.ID, folder.ID, path, msg.MessageID, msg.IsRead, msg.IsStarred); err != nil {
+			return false, err
+		}
+		return false, nil
+	}
+	if handled, err := a.syncExistingMaildirMessageState(ctx, mb.ID, folder.ID, path, msg.MessageID, msg.IsRead, msg.IsStarred); err != nil {
+		return false, err
+	} else if handled {
 		return false, nil
 	}
 	id, err := a.insertMessage(ctx, msg, attachments)
@@ -338,6 +393,210 @@ func (a *App) unregisteredMaildirMessageExists(ctx context.Context, rawPath, mes
 	return count > 0, nil
 }
 
+func (a *App) attachMaildirRawPathToExisting(ctx context.Context, mailboxID, folderID, rawPath, messageID string) {
+	if strings.TrimSpace(messageID) == "" || strings.TrimSpace(rawPath) == "" {
+		return
+	}
+	if _, err := a.db.ExecContext(ctx, `UPDATE messages SET raw_path=?,updated_at=? WHERE mailbox_id=? AND folder_id=? AND message_id=? AND message_id <> '' AND raw_path=''`,
+		rawPath, a.now().UTC().Format(time.RFC3339Nano), mailboxID, folderID, messageID); err != nil {
+		a.log.Warn("failed to attach maildir raw path to existing message", "path", rawPath, "error", err)
+	}
+}
+
+func (a *App) syncExistingMaildirMessageState(ctx context.Context, mailboxID, folderID, rawPath, messageID string, read, starred bool) (bool, error) {
+	now := a.now().UTC().Format(time.RFC3339Nano)
+	var samePathID, oldFolderID string
+	var oldRead, oldStarred int
+	var oldModSeq int64
+	err := a.db.QueryRowContext(ctx, `SELECT id,COALESCE(folder_id,''),is_read,is_starred,imap_modseq FROM messages WHERE mailbox_id=? AND raw_path=?`, mailboxID, rawPath).Scan(&samePathID, &oldFolderID, &oldRead, &oldStarred, &oldModSeq)
+	if err == nil {
+		if oldFolderID != folderID {
+			if oldFolderID != "" {
+				if _, err := a.bumpFolderModSeq(ctx, oldFolderID); err != nil {
+					return false, err
+				}
+			}
+			meta, err := a.nextIMAPMetadata(ctx, a.db, folderID)
+			if err != nil {
+				return false, err
+			}
+			_, err = a.db.ExecContext(ctx, `UPDATE messages SET folder_id=?,raw_path=?,is_read=?,is_starred=?,imap_uid=?,imap_modseq=?,updated_at=? WHERE id=?`,
+				folderID, rawPath, boolInt(read), boolInt(starred), meta.UID, meta.ModSeq, now, samePathID)
+			return err == nil, err
+		}
+		modSeq := oldModSeq
+		if oldRead != boolInt(read) || oldStarred != boolInt(starred) {
+			modSeq, err = a.bumpFolderModSeq(ctx, folderID)
+			if err != nil {
+				return false, err
+			}
+		}
+		_, err = a.db.ExecContext(ctx, `UPDATE messages SET raw_path=?,is_read=?,is_starred=?,imap_modseq=CASE WHEN ? > 0 THEN ? ELSE imap_modseq END,updated_at=? WHERE id=?`,
+			rawPath, boolInt(read), boolInt(starred), modSeq, modSeq, now, samePathID)
+		return err == nil, err
+	}
+	if err != nil && !errors.Is(err, sql.ErrNoRows) {
+		return false, err
+	}
+	if strings.TrimSpace(messageID) == "" {
+		return false, nil
+	}
+	type candidate struct {
+		ID      string
+		RawPath string
+	}
+	rows, err := a.db.QueryContext(ctx, `SELECT id,raw_path FROM messages WHERE mailbox_id=? AND message_id=? AND message_id <> '' ORDER BY CASE WHEN folder_id=? THEN 0 ELSE 1 END, created_at`, mailboxID, messageID, folderID)
+	if err != nil {
+		return false, err
+	}
+	var chosen candidate
+	for rows.Next() {
+		var c candidate
+		if err := rows.Scan(&c.ID, &c.RawPath); err != nil {
+			rows.Close()
+			return false, err
+		}
+		if c.RawPath == "" || c.RawPath == rawPath {
+			chosen = c
+			break
+		}
+		ok, err := a.pathIsUnderMaildirRoot(c.RawPath)
+		if err != nil {
+			rows.Close()
+			return false, err
+		}
+		if ok {
+			if _, err := os.Stat(c.RawPath); errors.Is(err, os.ErrNotExist) {
+				chosen = c
+				break
+			} else if err != nil {
+				rows.Close()
+				return false, err
+			}
+		}
+	}
+	if err := rows.Err(); err != nil {
+		rows.Close()
+		return false, err
+	}
+	if err := rows.Close(); err != nil {
+		return false, err
+	}
+	if chosen.ID == "" {
+		a.removeDuplicateMaildirMessage(ctx, rawPath, mailboxID, folderID, messageID)
+		return false, nil
+	}
+	var previousFolderID string
+	if err := a.db.QueryRowContext(ctx, `SELECT COALESCE(folder_id,'') FROM messages WHERE id=?`, chosen.ID).Scan(&previousFolderID); err != nil {
+		return false, err
+	}
+	if previousFolderID != "" && previousFolderID != folderID {
+		if _, err := a.bumpFolderModSeq(ctx, previousFolderID); err != nil {
+			return false, err
+		}
+	}
+	meta, err := a.nextIMAPMetadata(ctx, a.db, folderID)
+	if err != nil {
+		return false, err
+	}
+	_, err = a.db.ExecContext(ctx, `UPDATE messages SET folder_id=?,raw_path=?,is_read=?,is_starred=?,imap_uid=?,imap_modseq=?,updated_at=? WHERE id=?`, folderID, rawPath, boolInt(read), boolInt(starred), meta.UID, meta.ModSeq, now, chosen.ID)
+	return err == nil, err
+}
+
+func (a *App) removeDuplicateMaildirMessage(ctx context.Context, rawPath, mailboxID, folderID, messageID string) {
+	var existing string
+	err := a.db.QueryRowContext(ctx, `SELECT raw_path FROM messages WHERE mailbox_id=? AND folder_id=? AND message_id=? AND message_id <> '' AND raw_path<>'' LIMIT 1`, mailboxID, folderID, messageID).Scan(&existing)
+	if err != nil || existing == "" || existing == rawPath {
+		return
+	}
+	a.removeMaildirPath(ctx, rawPath)
+}
+
+func (a *App) cleanupMissingMaildirMessages(ctx context.Context) (int, error) {
+	if strings.TrimSpace(a.cfg.MaildirRoot) == "" {
+		return 0, nil
+	}
+	cutoff := a.now().UTC().Add(-5 * time.Minute).Format(time.RFC3339Nano)
+	rows, err := a.db.QueryContext(ctx, `SELECT id,raw_path FROM messages WHERE COALESCE(mailbox_id,'')<>'' AND raw_path<>'' AND updated_at<?`, cutoff)
+	if err != nil {
+		return 0, err
+	}
+	type item struct {
+		ID      string
+		RawPath string
+	}
+	var missing []item
+	for rows.Next() {
+		var it item
+		if err := rows.Scan(&it.ID, &it.RawPath); err != nil {
+			rows.Close()
+			return 0, err
+		}
+		ok, err := a.pathIsUnderMaildirRoot(it.RawPath)
+		if err != nil {
+			rows.Close()
+			return 0, err
+		}
+		if !ok {
+			continue
+		}
+		if _, err := os.Stat(it.RawPath); errors.Is(err, os.ErrNotExist) {
+			missing = append(missing, it)
+		} else if err != nil {
+			rows.Close()
+			return 0, err
+		}
+	}
+	if err := rows.Err(); err != nil {
+		rows.Close()
+		return 0, err
+	}
+	if err := rows.Close(); err != nil {
+		return 0, err
+	}
+	for _, it := range missing {
+		a.deleteMessageFiles(ctx, it.ID)
+		var folderID sql.NullString
+		_ = a.db.QueryRowContext(ctx, `SELECT folder_id FROM messages WHERE id=?`, it.ID).Scan(&folderID)
+		if _, err := a.db.ExecContext(ctx, `DELETE FROM messages WHERE id=?`, it.ID); err != nil {
+			return 0, err
+		}
+		if folderID.Valid && folderID.String != "" {
+			if _, err := a.bumpFolderModSeq(ctx, folderID.String); err != nil {
+				return 0, err
+			}
+		}
+	}
+	return len(missing), nil
+}
+
+func maildirFlagsFromPath(path, folderName string) (bool, bool) {
+	base := filepath.Base(path)
+	flags := ""
+	hasFlags := false
+	for _, sep := range []string{maildirFlagSeparator(), ":2,", "!2,"} {
+		if idx := strings.LastIndex(base, sep); idx >= 0 {
+			flags = base[idx+len(sep):]
+			hasFlags = true
+			break
+		}
+	}
+	if hasFlags {
+		return strings.ContainsRune(flags, 'S'), strings.ContainsRune(flags, 'F')
+	}
+	return !strings.EqualFold(folderName, "Inbox"), false
+}
+
+func (a *App) attachUnregisteredMaildirRawPathToExisting(ctx context.Context, rawPath, messageID, recipient string) {
+	if strings.TrimSpace(messageID) == "" || strings.TrimSpace(rawPath) == "" {
+		return
+	}
+	if _, err := a.db.ExecContext(ctx, `UPDATE messages SET raw_path=?,updated_at=? WHERE mailbox_id IS NULL AND recipient_addr=? AND message_id=? AND message_id <> '' AND raw_path=''`,
+		rawPath, a.now().UTC().Format(time.RFC3339Nano), recipient, messageID); err != nil {
+		a.log.Warn("failed to attach unregistered maildir raw path to existing message", "path", rawPath, "error", err)
+	}
+}
+
 func unregisteredRecipientFromMessage(msg storedMessage, domain string) string {
 	domain = normalizeDomain(domain)
 	for _, address := range append(append([]string{}, msg.To...), msg.CC...) {
@@ -395,6 +654,7 @@ func (a *App) parseMaildirMessage(raw []byte, fallbackTo string) (storedMessage,
 		BodyText:       bodyText,
 		BodyHTML:       bodyHTML,
 		IsRead:         false,
+		Authentication: parseMailAuthentication(textproto.MIMEHeader(m.Header)),
 	}, parsed.Attachments, nil
 }
 

apps/api/internal/app/maildir_write.go

@@ -0,0 +1,585 @@
+package app
+
+import (
+	"context"
+	"database/sql"
+	"encoding/base64"
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+	"runtime"
+	"strings"
+	"time"
+)
+
+func (a *App) writeStoredMessageToMaildir(ctx context.Context, messageID string, msg storedMessage, attachments []AttachmentInput) error {
+	if strings.TrimSpace(a.cfg.MaildirRoot) == "" || strings.TrimSpace(msg.MailboxID) == "" || strings.TrimSpace(msg.FolderID) == "" {
+		return nil
+	}
+	raw, err := BuildMIME(MIMEMessage{
+		From:        msg.From,
+		FromName:    msg.FromName,
+		To:          msg.To,
+		CC:          msg.CC,
+		BCC:         msg.BCC,
+		Subject:     msg.Subject,
+		Text:        msg.BodyText,
+		HTML:        msg.BodyHTML,
+		MessageID:   msg.MessageID,
+		Date:        messageDate(msg),
+		Attachments: attachments,
+	})
+	if err != nil {
+		return err
+	}
+	return a.writeRawMessageToMaildir(ctx, messageID, raw, false)
+}
+
+func (a *App) rewriteMessageMaildir(ctx context.Context, messageID string) error {
+	if strings.TrimSpace(a.cfg.MaildirRoot) == "" {
+		return nil
+	}
+	msg, err := a.storedMessageByID(ctx, messageID)
+	if err != nil {
+		return err
+	}
+	attachments, err := a.attachmentInputsForMessage(ctx, messageID)
+	if err != nil {
+		return err
+	}
+	raw, err := BuildMIME(MIMEMessage{
+		From:        msg.From,
+		FromName:    msg.FromName,
+		To:          msg.To,
+		CC:          msg.CC,
+		BCC:         msg.BCC,
+		Subject:     msg.Subject,
+		Text:        msg.BodyText,
+		HTML:        msg.BodyHTML,
+		MessageID:   msg.MessageID,
+		Date:        messageDate(msg),
+		Attachments: attachments,
+	})
+	if err != nil {
+		return err
+	}
+	return a.writeRawMessageToMaildir(ctx, messageID, raw, true)
+}
+
+func (a *App) writeRawMessageToMaildir(ctx context.Context, messageID string, raw []byte, replace bool) error {
+	state, err := a.maildirMessageState(ctx, messageID)
+	if err != nil {
+		return err
+	}
+	return a.writeRawMessageToMaildirFolder(ctx, messageID, state.FolderID, raw, replace, false)
+}
+
+func (a *App) writeRawMessageToMaildirFolder(ctx context.Context, messageID, folderID string, raw []byte, replace bool, updateFolder bool) error {
+	if strings.TrimSpace(a.cfg.MaildirRoot) == "" {
+		return nil
+	}
+	state, err := a.maildirMessageState(ctx, messageID)
+	if err != nil {
+		return err
+	}
+	if folderID != "" {
+		oldFolderID := state.FolderID
+		state.FolderID = folderID
+		if updateFolder && oldFolderID != "" && oldFolderID != state.FolderID {
+			if _, err := a.bumpFolderModSeq(ctx, oldFolderID); err != nil {
+				return err
+			}
+		}
+	}
+	if state.MailboxID == "" || state.FolderID == "" {
+		return nil
+	}
+	if !replace && state.RawPath != "" {
+		if ok, err := a.pathIsUnderMaildirRoot(state.RawPath); err != nil {
+			return err
+		} else if ok {
+			if _, err := os.Stat(state.RawPath); err == nil {
+				return nil
+			} else if !errors.Is(err, os.ErrNotExist) {
+				return err
+			}
+		}
+	}
+	mb, err := a.maildirMailboxByID(ctx, state.MailboxID)
+	if err != nil {
+		return err
+	}
+	folderName, err := a.folderNameByID(ctx, state.FolderID)
+	if err != nil {
+		return err
+	}
+	base := filepath.Join(strings.TrimSpace(a.cfg.MaildirRoot), mb.Domain, mb.LocalPart, "Maildir")
+	folderBase := maildirFolderPath(base, folderName)
+	subdir := "cur"
+	if strings.EqualFold(folderName, "Inbox") && !state.IsRead {
+		subdir = "new"
+	}
+	if err := ensureMaildirFolderDirs(folderBase); err != nil {
+		return err
+	}
+	filename := maildirFilename(messageID, state.MessageID)
+	tmpPath := filepath.Join(folderBase, "tmp", filename)
+	finalPath := filepath.Join(folderBase, subdir, filename)
+	finalPath = maildirPathWithFlags(finalPath, state.IsRead, state.IsStarred)
+	if err := os.WriteFile(tmpPath, raw, 0o600); err != nil {
+		return err
+	}
+	if err := os.Rename(tmpPath, finalPath); err != nil {
+		_ = os.Remove(tmpPath)
+		return err
+	}
+	if replace || state.RawPath != "" {
+		a.removeMaildirPath(ctx, state.RawPath)
+	}
+	if updateFolder {
+		if state.IMAPUID > 0 && folderID == "" {
+			modSeq, metaErr := a.bumpFolderModSeq(ctx, state.FolderID)
+			if metaErr != nil {
+				return metaErr
+			}
+			_, err = a.db.ExecContext(ctx, `UPDATE messages SET folder_id=?,raw_path=?,imap_modseq=CASE WHEN ? > 0 THEN ? ELSE imap_modseq END,updated_at=? WHERE id=?`, state.FolderID, finalPath, modSeq, modSeq, a.now().UTC().Format(time.RFC3339Nano), messageID)
+		} else {
+			meta, metaErr := a.nextIMAPMetadata(ctx, a.db, state.FolderID)
+			if metaErr != nil {
+				return metaErr
+			}
+			_, err = a.db.ExecContext(ctx, `UPDATE messages SET folder_id=?,raw_path=?,imap_uid=?,imap_modseq=?,updated_at=? WHERE id=?`, state.FolderID, finalPath, meta.UID, meta.ModSeq, a.now().UTC().Format(time.RFC3339Nano), messageID)
+		}
+	} else {
+		modSeq, metaErr := a.bumpFolderModSeq(ctx, state.FolderID)
+		if metaErr != nil {
+			return metaErr
+		}
+		_, err = a.db.ExecContext(ctx, `UPDATE messages SET raw_path=?,imap_modseq=CASE WHEN ? > 0 THEN ? ELSE imap_modseq END,updated_at=? WHERE id=?`, finalPath, modSeq, modSeq, a.now().UTC().Format(time.RFC3339Nano), messageID)
+	}
+	return err
+}
+
+func (a *App) moveMessageMaildir(ctx context.Context, messageID, targetFolderID string) error {
+	if strings.TrimSpace(a.cfg.MaildirRoot) == "" {
+		state, stateErr := a.maildirMessageState(ctx, messageID)
+		if stateErr != nil {
+			return stateErr
+		}
+		if state.FolderID != "" && state.FolderID != targetFolderID {
+			if _, err := a.bumpFolderModSeq(ctx, state.FolderID); err != nil {
+				return err
+			}
+		}
+		meta, metaErr := a.nextIMAPMetadata(ctx, a.db, targetFolderID)
+		if metaErr != nil {
+			return metaErr
+		}
+		_, err := a.db.ExecContext(ctx, `UPDATE messages SET folder_id=?,imap_uid=?,imap_modseq=?,updated_at=? WHERE id=?`, targetFolderID, meta.UID, meta.ModSeq, a.now().UTC().Format(time.RFC3339Nano), messageID)
+		return err
+	}
+	state, err := a.maildirMessageState(ctx, messageID)
+	if err != nil {
+		return err
+	}
+	if state.MailboxID == "" {
+		return nil
+	}
+	state.FolderID = targetFolderID
+	if state.RawPath == "" {
+		return a.writeMessageToNewMaildirFolder(ctx, messageID, targetFolderID)
+	}
+	ok, err := a.pathIsUnderMaildirRoot(state.RawPath)
+	if err != nil {
+		return err
+	}
+	if !ok {
+		return a.writeMessageToNewMaildirFolder(ctx, messageID, targetFolderID)
+	}
+	if _, err := os.Stat(state.RawPath); err != nil {
+		if errors.Is(err, os.ErrNotExist) {
+			return a.writeMessageToNewMaildirFolder(ctx, messageID, targetFolderID)
+		}
+		return err
+	}
+	mb, err := a.maildirMailboxByID(ctx, state.MailboxID)
+	if err != nil {
+		return err
+	}
+	folderName, err := a.folderNameByID(ctx, targetFolderID)
+	if err != nil {
+		return err
+	}
+	base := filepath.Join(strings.TrimSpace(a.cfg.MaildirRoot), mb.Domain, mb.LocalPart, "Maildir")
+	folderBase := maildirFolderPath(base, folderName)
+	if err := ensureMaildirFolderDirs(folderBase); err != nil {
+		return err
+	}
+	subdir := "cur"
+	if strings.EqualFold(folderName, "Inbox") && !state.IsRead {
+		subdir = "new"
+	}
+	targetPath := filepath.Join(folderBase, subdir, filepath.Base(state.RawPath))
+	if filepath.Clean(targetPath) != filepath.Clean(state.RawPath) {
+		if err := os.Rename(state.RawPath, targetPath); err != nil {
+			return err
+		}
+	}
+	if state.FolderID != "" && state.FolderID != targetFolderID {
+		if _, err := a.bumpFolderModSeq(ctx, state.FolderID); err != nil {
+			return err
+		}
+	}
+	meta, err := a.nextIMAPMetadata(ctx, a.db, targetFolderID)
+	if err != nil {
+		return err
+	}
+	_, err = a.db.ExecContext(ctx, `UPDATE messages SET folder_id=?,raw_path=?,imap_uid=?,imap_modseq=?,updated_at=? WHERE id=?`, targetFolderID, targetPath, meta.UID, meta.ModSeq, a.now().UTC().Format(time.RFC3339Nano), messageID)
+	return err
+}
+
+func (a *App) writeMessageToNewMaildirFolder(ctx context.Context, messageID, folderID string) error {
+	msg, err := a.storedMessageByID(ctx, messageID)
+	if err != nil {
+		return err
+	}
+	msg.FolderID = folderID
+	attachments, err := a.attachmentInputsForMessage(ctx, messageID)
+	if err != nil {
+		return err
+	}
+	raw, err := BuildMIME(MIMEMessage{
+		From:        msg.From,
+		FromName:    msg.FromName,
+		To:          msg.To,
+		CC:          msg.CC,
+		BCC:         msg.BCC,
+		Subject:     msg.Subject,
+		Text:        msg.BodyText,
+		HTML:        msg.BodyHTML,
+		MessageID:   msg.MessageID,
+		Date:        messageDate(msg),
+		Attachments: attachments,
+	})
+	if err != nil {
+		return err
+	}
+	return a.writeRawMessageToMaildirFolder(ctx, messageID, folderID, raw, true, true)
+}
+
+func (a *App) deleteMessageMaildirFile(ctx context.Context, messageID string) {
+	var rawPath string
+	if err := a.db.QueryRowContext(ctx, `SELECT raw_path FROM messages WHERE id=?`, messageID).Scan(&rawPath); err != nil {
+		return
+	}
+	a.removeMaildirPath(ctx, rawPath)
+}
+
+func (a *App) updateMessageMaildirFlags(ctx context.Context, messageID string, read, starred *bool) error {
+	if strings.TrimSpace(a.cfg.MaildirRoot) == "" {
+		return nil
+	}
+	state, err := a.maildirMessageState(ctx, messageID)
+	if err != nil {
+		return err
+	}
+	if state.RawPath == "" {
+		return nil
+	}
+	ok, err := a.pathIsUnderMaildirRoot(state.RawPath)
+	if err != nil {
+		return err
+	}
+	if !ok {
+		return nil
+	}
+	if _, err := os.Stat(state.RawPath); err != nil {
+		if errors.Is(err, os.ErrNotExist) {
+			return nil
+		}
+		return err
+	}
+	currentRead := state.IsRead
+	currentStarred := state.IsStarred
+	if read != nil {
+		currentRead = *read
+	}
+	if starred != nil {
+		currentStarred = *starred
+	}
+	targetPath := maildirPathWithFlags(state.RawPath, currentRead, currentStarred)
+	if filepath.Clean(targetPath) == filepath.Clean(state.RawPath) {
+		return nil
+	}
+	if err := os.MkdirAll(filepath.Dir(targetPath), 0o755); err != nil {
+		return err
+	}
+	if err := os.Rename(state.RawPath, targetPath); err != nil {
+		return err
+	}
+	modSeq, err := a.bumpFolderModSeq(ctx, state.FolderID)
+	if err != nil {
+		return err
+	}
+	_, err = a.db.ExecContext(ctx, `UPDATE messages SET raw_path=?,imap_modseq=CASE WHEN ? > 0 THEN ? ELSE imap_modseq END,updated_at=? WHERE id=?`, targetPath, modSeq, modSeq, a.now().UTC().Format(time.RFC3339Nano), messageID)
+	return err
+}
+
+func (a *App) removeMaildirPath(ctx context.Context, rawPath string) {
+	rawPath = strings.TrimSpace(rawPath)
+	if rawPath == "" {
+		return
+	}
+	ok, err := a.pathIsUnderMaildirRoot(rawPath)
+	if err != nil || !ok {
+		if err != nil {
+			a.log.Warn("failed to validate maildir path", "path", rawPath, "error", err)
+		}
+		return
+	}
+	if err := os.Remove(rawPath); err != nil && !errors.Is(err, os.ErrNotExist) {
+		a.log.Warn("failed to remove maildir message", "path", rawPath, "error", err)
+	}
+}
+
+func (a *App) backfillSQLiteMessagesToMaildir(ctx context.Context) (int, error) {
+	if strings.TrimSpace(a.cfg.MaildirRoot) == "" {
+		return 0, nil
+	}
+	rows, err := a.db.QueryContext(ctx, `SELECT id FROM messages WHERE COALESCE(mailbox_id,'')<>'' AND COALESCE(folder_id,'')<>'' AND raw_path='' ORDER BY created_at LIMIT 100`)
+	if err != nil {
+		return 0, err
+	}
+	var ids []string
+	for rows.Next() {
+		select {
+		case <-ctx.Done():
+			rows.Close()
+			return 0, ctx.Err()
+		default:
+		}
+		var id string
+		if err := rows.Scan(&id); err != nil {
+			rows.Close()
+			return 0, err
+		}
+		ids = append(ids, id)
+	}
+	if err := rows.Err(); err != nil {
+		rows.Close()
+		return 0, err
+	}
+	if err := rows.Close(); err != nil {
+		return 0, err
+	}
+	count := 0
+	for _, id := range ids {
+		if err := a.rewriteMessageMaildir(ctx, id); err != nil {
+			return count, err
+		}
+		count++
+	}
+	return count, nil
+}
+
+type maildirMessageState struct {
+	MailboxID  string
+	FolderID   string
+	MessageID  string
+	RawPath    string
+	IsRead     bool
+	IsStarred  bool
+	IMAPUID    int64
+	IMAPModSeq int64
+}
+
+func (a *App) maildirMessageState(ctx context.Context, id string) (maildirMessageState, error) {
+	var state maildirMessageState
+	var mailboxID, folderID sql.NullString
+	var read, starred int
+	err := a.db.QueryRowContext(ctx, `SELECT mailbox_id,folder_id,message_id,raw_path,is_read,is_starred,imap_uid,imap_modseq FROM messages WHERE id=?`, id).Scan(&mailboxID, &folderID, &state.MessageID, &state.RawPath, &read, &starred, &state.IMAPUID, &state.IMAPModSeq)
+	if err != nil {
+		return state, err
+	}
+	state.MailboxID = mailboxID.String
+	state.FolderID = folderID.String
+	state.IsRead = intBool(read)
+	state.IsStarred = intBool(starred)
+	return state, nil
+}
+
+func (a *App) storedMessageByID(ctx context.Context, id string) (storedMessage, error) {
+	row := a.db.QueryRowContext(ctx, `SELECT COALESCE(mailbox_id,''),COALESCE(folder_id,''),recipient_addr,message_uid,message_id,subject,from_addr,from_name,to_addrs,cc_addrs,bcc_addrs,sent_at,received_at,snippet,body_text,body_html,is_read,is_starred,raw_path FROM messages WHERE id=?`, id)
+	var msg storedMessage
+	var toJSON, ccJSON, bccJSON, sent, received string
+	var read, starred int
+	err := row.Scan(&msg.MailboxID, &msg.FolderID, &msg.RecipientAddr, &msg.MessageUID, &msg.MessageID, &msg.Subject, &msg.From, &msg.FromName, &toJSON, &ccJSON, &bccJSON, &sent, &received, &msg.Snippet, &msg.BodyText, &msg.BodyHTML, &read, &starred, &msg.RawPath)
+	if err != nil {
+		return msg, err
+	}
+	msg.To = jsonDecodeSlice(toJSON)
+	msg.CC = jsonDecodeSlice(ccJSON)
+	msg.BCC = jsonDecodeSlice(bccJSON)
+	msg.SentAt = parseTime(sent)
+	msg.ReceivedAt = parseTime(received)
+	msg.IsRead = intBool(read)
+	msg.IsStarred = intBool(starred)
+	return msg, nil
+}
+
+func (a *App) attachmentInputsForMessage(ctx context.Context, messageID string) ([]AttachmentInput, error) {
+	rows, err := a.db.QueryContext(ctx, `SELECT filename,content_type,storage_path FROM attachments WHERE message_id=? ORDER BY filename`, messageID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var out []AttachmentInput
+	for rows.Next() {
+		var filename, contentType, storagePath string
+		if err := rows.Scan(&filename, &contentType, &storagePath); err != nil {
+			return nil, err
+		}
+		data, err := os.ReadFile(storagePath)
+		if err != nil {
+			return nil, err
+		}
+		out = append(out, AttachmentInput{Filename: filename, ContentType: contentType, ContentBase64: base64.StdEncoding.EncodeToString(data)})
+	}
+	return out, rows.Err()
+}
+
+func (a *App) maildirMailboxByID(ctx context.Context, mailboxID string) (maildirMailbox, error) {
+	var mb maildirMailbox
+	err := a.db.QueryRowContext(ctx, `SELECT m.id,m.address,m.local_part,d.name FROM mailboxes m JOIN domains d ON d.id=m.domain_id WHERE m.id=?`, mailboxID).Scan(&mb.ID, &mb.Address, &mb.LocalPart, &mb.Domain)
+	return mb, err
+}
+
+func (a *App) folderNameByID(ctx context.Context, folderID string) (string, error) {
+	var name string
+	err := a.db.QueryRowContext(ctx, `SELECT name FROM folders WHERE id=?`, folderID).Scan(&name)
+	return name, err
+}
+
+func (a *App) pathIsUnderMaildirRoot(path string) (bool, error) {
+	root := strings.TrimSpace(a.cfg.MaildirRoot)
+	if root == "" || strings.TrimSpace(path) == "" {
+		return false, nil
+	}
+	rootAbs, err := filepath.Abs(root)
+	if err != nil {
+		return false, err
+	}
+	pathAbs, err := filepath.Abs(path)
+	if err != nil {
+		return false, err
+	}
+	rel, err := filepath.Rel(rootAbs, pathAbs)
+	if err != nil {
+		return false, err
+	}
+	return rel != "." && !strings.HasPrefix(rel, ".."+string(filepath.Separator)) && rel != "..", nil
+}
+
+func ensureMaildirFolderDirs(folderBase string) error {
+	for _, sub := range []string{"tmp", "new", "cur"} {
+		if err := os.MkdirAll(filepath.Join(folderBase, sub), 0o755); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func maildirFilename(messageID, headerMessageID string) string {
+	base := strings.TrimSpace(headerMessageID)
+	if base == "" {
+		base = messageID
+	}
+	return fmt.Sprintf("%d.%s.%s", time.Now().UnixNano(), safeMaildirName(messageID), safeMaildirName(base))
+}
+
+func safeMaildirName(value string) string {
+	value = strings.Trim(value, "<>")
+	var b strings.Builder
+	for _, r := range value {
+		switch {
+		case r >= 'a' && r <= 'z', r >= 'A' && r <= 'Z', r >= '0' && r <= '9':
+			b.WriteRune(r)
+		case r == '.', r == '_', r == '-', r == '@':
+			b.WriteRune(r)
+		default:
+			b.WriteByte('_')
+		}
+	}
+	out := strings.Trim(b.String(), "._-")
+	if out == "" {
+		out = "message"
+	}
+	if len(out) > 120 {
+		out = out[:120]
+	}
+	return out
+}
+
+func messageDate(msg storedMessage) time.Time {
+	if !msg.SentAt.IsZero() {
+		return msg.SentAt
+	}
+	if !msg.ReceivedAt.IsZero() {
+		return msg.ReceivedAt
+	}
+	return time.Now().UTC()
+}
+
+func maildirPathWithFlags(path string, read, starred bool) string {
+	dir := filepath.Dir(path)
+	name := filepath.Base(path)
+	if read || starred {
+		dir = filepath.Join(filepath.Dir(dir), "cur")
+	} else if filepath.Base(dir) == "cur" {
+		dir = filepath.Join(filepath.Dir(dir), "new")
+	}
+	base := name
+	sep := maildirFlagSeparator()
+	existingFlags := ""
+	if idx := strings.LastIndex(base, sep); idx >= 0 {
+		existingFlags = base[idx+len(sep):]
+		base = base[:idx]
+	}
+	flags := preserveMaildirFlags(existingFlags, "SF")
+	if read {
+		flags = appendMaildirFlag(flags, 'S')
+	}
+	if starred {
+		flags = appendMaildirFlag(flags, 'F')
+	}
+	if flags != "" {
+		base += sep + flags
+	}
+	return filepath.Join(dir, base)
+}
+
+func preserveMaildirFlags(flags, managed string) string {
+	var b strings.Builder
+	for _, flag := range flags {
+		if strings.ContainsRune(managed, flag) || strings.ContainsRune(b.String(), flag) {
+			continue
+		}
+		b.WriteRune(flag)
+	}
+	return b.String()
+}
+
+func appendMaildirFlag(flags string, flag rune) string {
+	if strings.ContainsRune(flags, flag) {
+		return flags
+	}
+	return flags + string(flag)
+}
+
+func maildirFlagSeparator() string {
+	if runtime.GOOS == "windows" {
+		return "!2,"
+	}
+	return ":2,"
+}

apps/api/internal/app/personal_handlers.go

@@ -6,6 +6,7 @@ import (
 	"encoding/json"
 	"errors"
 	"net/http"
+	"strconv"
 	"strings"
 	"time"
 
@@ -466,14 +467,12 @@ func (a *App) handleCreateRule(w http.ResponseWriter, r *http.Request) {
 		respondError(w, http.StatusNotFound, "mailbox not found")
 		return
 	}
-	matchMode := strings.TrimSpace(req.MatchMode)
-	if matchMode == "" {
-		matchMode = "all"
-	}
-	if matchMode != "all" && matchMode != "any" {
+	rawMatchMode := strings.ToLower(strings.TrimSpace(req.MatchMode))
+	if rawMatchMode != "" && rawMatchMode != "all" && rawMatchMode != "and" && rawMatchMode != "any" && rawMatchMode != "or" {
 		badRequest(w, errors.New("invalid match mode"))
 		return
 	}
+	matchMode := normalizeRuleMatchMode(rawMatchMode)
 	conditions := normalizeRuleConditions(req.Conditions, req.FromContains, req.SubjectContains)
 	if len(conditions) == 0 {
 		badRequest(w, errors.New("rule condition is required"))
@@ -639,10 +638,21 @@ func (a *App) handleMailStats(w http.ResponseWriter, r *http.Request) {
 		respondError(w, http.StatusInternalServerError, "failed to load stats")
 		return
 	}
-	if err := a.db.QueryRowContext(r.Context(), `SELECT COUNT(a.id) FROM attachments a JOIN messages m ON m.id=a.message_id JOIN mailboxes mb ON mb.id=m.mailbox_id WHERE `+where, args...).Scan(&stats.AttachmentCount); err != nil {
+	if err := a.db.QueryRowContext(r.Context(), `SELECT COUNT(a.id),COALESCE(SUM(a.size_bytes),0) FROM attachments a JOIN messages m ON m.id=a.message_id JOIN mailboxes mb ON mb.id=m.mailbox_id WHERE `+where, args...).Scan(&stats.AttachmentCount, &stats.AttachmentBytes); err != nil {
 		respondError(w, http.StatusInternalServerError, "failed to load attachment stats")
 		return
 	}
+	if mailboxID != "" {
+		var quotaMB int64
+		if err := a.db.QueryRowContext(r.Context(), `SELECT quota_mb FROM mailboxes WHERE id=? AND user_id=?`, mailboxID, user.ID).Scan(&quotaMB); err != nil {
+			respondError(w, http.StatusInternalServerError, "failed to load quota")
+			return
+		}
+		stats.QuotaBytes = quotaMB * 1024 * 1024
+		if stats.QuotaBytes > 0 {
+			stats.QuotaUsedPct = float64(stats.StorageBytes) / float64(stats.QuotaBytes) * 100
+		}
+	}
 	rows, err := a.db.QueryContext(r.Context(), `SELECT f.name,f.role,COUNT(m.id),COALESCE(SUM(CASE WHEN m.is_read=0 THEN 1 ELSE 0 END),0),COALESCE(SUM(m.size_bytes),0)
 		FROM mailboxes mb JOIN folders f ON f.mailbox_id=mb.id LEFT JOIN messages m ON m.folder_id=f.id
 		WHERE `+where+` GROUP BY f.id,f.name,f.role ORDER BY CASE f.role WHEN 'inbox' THEN 1 WHEN 'sent' THEN 2 WHEN 'drafts' THEN 3 WHEN 'archive' THEN 4 WHEN 'spam' THEN 5 WHEN 'trash' THEN 6 ELSE 99 END`, args...)
@@ -723,11 +733,14 @@ func (a *App) deleteMessagesInFolder(ctx context.Context, mailboxID, folder stri
 		}
 		ids = append(ids, id)
 	}
-	for _, id := range ids {
-		a.deleteMessageFiles(ctx, id)
-		if _, err := a.db.ExecContext(ctx, `DELETE FROM messages WHERE id=?`, id); err != nil {
+	if err := rows.Err(); err != nil {
 		return 0, err
 	}
+	if err := rows.Close(); err != nil {
+		return 0, err
+	}
+	for _, id := range ids {
+		a.deleteMessage(ctx, id)
 	}
 	return int64(len(ids)), nil
 }
@@ -741,13 +754,31 @@ func (a *App) archiveReadInbox(ctx context.Context, mailboxID string) (int64, er
 	if err != nil {
 		return 0, err
 	}
-	res, err := a.db.ExecContext(ctx, `UPDATE messages SET folder_id=?, updated_at=? WHERE mailbox_id=? AND folder_id=? AND is_read=1`,
-		archiveID, a.now().UTC().Format(time.RFC3339Nano), mailboxID, inboxID)
+	rows, err := a.db.QueryContext(ctx, `SELECT id FROM messages WHERE mailbox_id=? AND folder_id=? AND is_read=1`, mailboxID, inboxID)
 	if err != nil {
 		return 0, err
 	}
-	n, _ := res.RowsAffected()
-	return n, nil
+	defer rows.Close()
+	var ids []string
+	for rows.Next() {
+		var id string
+		if err := rows.Scan(&id); err != nil {
+			return 0, err
+		}
+		ids = append(ids, id)
+	}
+	if err := rows.Err(); err != nil {
+		return 0, err
+	}
+	if err := rows.Close(); err != nil {
+		return 0, err
+	}
+	for _, id := range ids {
+		if err := a.moveMessageMaildir(ctx, id, archiveID); err != nil {
+			return 0, err
+		}
+	}
+	return int64(len(ids)), nil
 }
 
 func scanContact(row messageSummaryScanner) (Contact, error) {
@@ -832,9 +863,7 @@ func scanRule(row messageSummaryScanner) (MailRule, error) {
 	if err == nil {
 		item.Conditions = decodeRuleConditions(conditionsJSON, item.FromContains, item.SubjectContains)
 		item.Actions = decodeRuleActions(actionsJSON, item.Action)
-		if item.MatchMode == "" {
-			item.MatchMode = "all"
-		}
+		item.MatchMode = normalizeRuleMatchMode(item.MatchMode)
 	}
 	item.ApplyToExisting = intBool(applyToExisting)
 	item.StopProcessing = intBool(stopProcessing)
@@ -856,13 +885,8 @@ func (a *App) applyInboundControls(ctx context.Context, messageID, mailboxID, fr
 	if err := a.db.QueryRowContext(ctx, `SELECT user_id FROM mailboxes WHERE id=?`, mailboxID).Scan(&userID); err != nil {
 		return
 	}
-	from = normalizeEmail(from)
-	var blocked int
-	_ = a.db.QueryRowContext(ctx, `SELECT COUNT(1) FROM blocked_senders WHERE user_id=? AND (mailbox_id='' OR mailbox_id=?) AND email=?`, userID, mailboxID, from).Scan(&blocked)
-	if blocked > 0 {
-		if spamID, err := a.ensureFolder(ctx, mailboxID, "Spam"); err == nil {
-			_, _ = a.db.ExecContext(ctx, `UPDATE messages SET folder_id=?, updated_at=? WHERE id=?`, spamID, a.now().UTC().Format(time.RFC3339Nano), messageID)
-		}
+	if a.senderBlocked(ctx, userID, mailboxID, from) {
+		a.moveBlockedMessageToSpam(ctx, messageID, mailboxID)
 		return
 	}
 	rows, err := a.db.QueryContext(ctx, `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 user_id=? AND (mailbox_id='' OR mailbox_id=?) AND enabled=1 ORDER BY created_at`, userID, mailboxID)
@@ -878,16 +902,40 @@ func (a *App) applyInboundControls(ctx context.Context, messageID, mailboxID, fr
 	}
 	rows.Close()
 	msg := ruleMessage{ID: messageID, MailboxID: mailboxID, From: from, Subject: subject}
-	_ = a.db.QueryRowContext(ctx, `SELECT trim(from_addr || ' ' || COALESCE(from_name,'')),to_addrs,subject,snippet,body_text FROM messages WHERE id=?`, messageID).Scan(&msg.From, &msg.To, &msg.Subject, &msg.Snippet, &msg.BodyText)
+	msg, ok := a.ruleMessageByID(ctx, messageID)
+	if !ok {
+		msg = ruleMessage{ID: messageID, MailboxID: mailboxID, From: from, Subject: subject}
+	}
 	for _, rule := range rules {
 		if !ruleMatches(rule, msg) {
 			continue
 		}
 		_ = a.applyRuleActions(ctx, mailboxID, messageID, rule.Actions)
 		if rule.StopProcessing {
+			break
+		}
+	}
+	if a.senderBlocked(ctx, userID, mailboxID, from) {
+		a.moveBlockedMessageToSpam(ctx, messageID, mailboxID)
+	}
+}
+
+func (a *App) senderBlocked(ctx context.Context, userID, mailboxID, from string) bool {
+	from = normalizeEmail(from)
+	if from == "" {
+		return false
+	}
+	var blocked int
+	_ = a.db.QueryRowContext(ctx, `SELECT COUNT(1) FROM blocked_senders WHERE user_id=? AND (mailbox_id='' OR mailbox_id=?) AND email=?`, userID, mailboxID, from).Scan(&blocked)
+	return blocked > 0
+}
+
+func (a *App) moveBlockedMessageToSpam(ctx context.Context, messageID, mailboxID string) {
+	spamID, err := a.ensureFolder(ctx, mailboxID, "Spam")
+	if err != nil {
 		return
 	}
-	}
+	_ = a.moveMessageMaildir(ctx, messageID, spamID)
 }
 
 type ruleMessage struct {
@@ -895,9 +943,53 @@ type ruleMessage struct {
 	MailboxID       string
 	From            string
 	To              string
+	CC              string
 	Subject         string
 	Snippet         string
 	BodyText        string
+	AttachmentNames string
+	SizeBytes       int64
+	ReceivedAt      time.Time
+}
+
+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).
+		Scan(&msg.ID, &msg.MailboxID, &msg.From, &toAddrs, &ccAddrs, &msg.Subject, &msg.Snippet, &msg.BodyText, &msg.SizeBytes, &receivedAt)
+	if err != nil {
+		return ruleMessage{}, false
+	}
+	msg.To = ruleAddressText(toAddrs)
+	msg.CC = ruleAddressText(ccAddrs)
+	msg.ReceivedAt = parseTime(receivedAt)
+	msg.AttachmentNames = a.ruleAttachmentNames(ctx, messageID)
+	return msg, true
+}
+
+func ruleAddressText(raw string) string {
+	var items []string
+	if strings.TrimSpace(raw) != "" && json.Unmarshal([]byte(raw), &items) == nil {
+		return strings.Join(items, " ")
+	}
+	return raw
+}
+
+func (a *App) ruleAttachmentNames(ctx context.Context, messageID string) string {
+	rows, err := a.db.QueryContext(ctx, `SELECT filename,content_type FROM attachments WHERE message_id=? ORDER BY filename`, messageID)
+	if err != nil {
+		return ""
+	}
+	defer rows.Close()
+	parts := []string{}
+	for rows.Next() {
+		var filename, contentType string
+		if err := rows.Scan(&filename, &contentType); err != nil {
+			return strings.Join(parts, " ")
+		}
+		parts = append(parts, filename, contentType)
+	}
+	return strings.Join(parts, " ")
 }
 
 func normalizeRuleConditions(items []MailRuleCondition, legacyFrom, legacySubject string) []MailRuleCondition {
@@ -911,24 +1003,54 @@ func normalizeRuleConditions(items []MailRuleCondition, legacyFrom, legacySubjec
 	}
 	out := []MailRuleCondition{}
 	for _, item := range items {
-		field := strings.TrimSpace(item.Field)
-		operator := strings.TrimSpace(item.Operator)
+		if normalized, ok := normalizeRuleCondition(item); ok {
+			out = append(out, normalized)
+		}
+	}
+	return out
+}
+
+func normalizeRuleCondition(item MailRuleCondition) (MailRuleCondition, bool) {
+	matchMode := normalizeRuleMatchMode(item.MatchMode)
+	if len(item.Conditions) > 0 {
+		children := normalizeRuleConditions(item.Conditions, "", "")
+		if len(children) == 0 {
+			return MailRuleCondition{}, false
+		}
+		return MailRuleCondition{MatchMode: matchMode, Conditions: children}, true
+	}
+	field := strings.ToLower(strings.TrimSpace(item.Field))
+	operator := strings.ToLower(strings.TrimSpace(item.Operator))
 	value := strings.TrimSpace(item.Value)
 	if value == "" {
-			continue
+		return MailRuleCondition{}, false
 	}
-		if field != "from" && field != "to" && field != "subject" && field != "body" {
-			continue
+	switch field {
+	case "from", "to", "cc", "subject", "body", "attachment", "size", "date":
+	default:
+		return MailRuleCondition{}, false
 	}
 	if operator == "" {
 		operator = "contains"
 	}
-		if operator != "contains" && operator != "not-contains" && operator != "equals" && operator != "not-equals" && operator != "starts-with" && operator != "ends-with" {
-			continue
+	switch operator {
+	case "contains", "not-contains", "equals", "not-equals", "starts-with", "ends-with":
+	case "gt", "gte", "lt", "lte", "before", "after", "on":
+	default:
+		return MailRuleCondition{}, false
 	}
-		out = append(out, MailRuleCondition{Field: field, Operator: operator, Value: value})
+	return MailRuleCondition{Field: field, Operator: operator, Value: value}, true
+}
+
+func normalizeRuleMatchMode(matchMode string) string {
+	switch strings.ToLower(strings.TrimSpace(matchMode)) {
+	case "any", "or":
+		return "any"
+	case "all", "and":
+		return "all"
+	default:
+		return "all"
 	}
-	return out
 }
 
 func normalizeRuleActions(items []MailRuleAction, legacyAction string) []MailRuleAction {
@@ -987,10 +1109,11 @@ func ruleMatches(rule MailRule, msg ruleMessage) bool {
 	if len(conditions) == 0 {
 		return false
 	}
-	matchMode := rule.MatchMode
-	if matchMode == "" {
-		matchMode = "all"
+	matchMode := normalizeRuleMatchMode(rule.MatchMode)
+	return ruleConditionsMatch(conditions, matchMode, msg)
 }
+
+func ruleConditionsMatch(conditions []MailRuleCondition, matchMode string, msg ruleMessage) bool {
 	matched := 0
 	for _, condition := range conditions {
 		if ruleConditionMatches(condition, msg) {
@@ -1006,12 +1129,17 @@ func ruleMatches(rule MailRule, msg ruleMessage) bool {
 }
 
 func ruleConditionMatches(condition MailRuleCondition, msg ruleMessage) bool {
+	if len(condition.Conditions) > 0 {
+		return ruleConditionsMatch(condition.Conditions, normalizeRuleMatchMode(condition.MatchMode), msg)
+	}
 	var source string
-	switch condition.Field {
+	switch strings.ToLower(strings.TrimSpace(condition.Field)) {
 	case "from":
 		source = msg.From
 	case "to":
 		source = msg.To
+	case "cc":
+		source = msg.CC
 	case "subject":
 		source = msg.Subject
 	case "body":
@@ -1019,12 +1147,18 @@ func ruleConditionMatches(condition MailRuleCondition, msg ruleMessage) bool {
 		if source == "" {
 			source = msg.Snippet
 		}
+	case "attachment":
+		source = msg.AttachmentNames
+	case "size":
+		return ruleNumericConditionMatches(condition, msg.SizeBytes)
+	case "date":
+		return ruleDateConditionMatches(condition, msg.ReceivedAt)
 	default:
 		return false
 	}
 	source = strings.ToLower(source)
 	value := strings.ToLower(condition.Value)
-	switch condition.Operator {
+	switch strings.ToLower(strings.TrimSpace(condition.Operator)) {
 	case "contains":
 		return strings.Contains(source, value)
 	case "not-contains":
@@ -1042,35 +1176,139 @@ func ruleConditionMatches(condition MailRuleCondition, msg ruleMessage) bool {
 	}
 }
 
+func ruleNumericConditionMatches(condition MailRuleCondition, source int64) bool {
+	value, ok := parseRuleSizeValue(condition.Value)
+	if !ok {
+		return false
+	}
+	switch strings.ToLower(strings.TrimSpace(condition.Operator)) {
+	case "gt":
+		return source > value
+	case "gte":
+		return source >= value
+	case "lt":
+		return source < value
+	case "lte":
+		return source <= value
+	case "equals":
+		return source == value
+	case "not-equals":
+		return source != value
+	default:
+		return false
+	}
+}
+
+func parseRuleSizeValue(raw string) (int64, bool) {
+	value := strings.ToLower(strings.TrimSpace(raw))
+	multiplier := int64(1)
+	for _, suffix := range []struct {
+		text       string
+		multiplier int64
+	}{
+		{"kb", 1024},
+		{"k", 1024},
+		{"mb", 1024 * 1024},
+		{"m", 1024 * 1024},
+		{"gb", 1024 * 1024 * 1024},
+		{"g", 1024 * 1024 * 1024},
+		{"b", 1},
+	} {
+		if strings.HasSuffix(value, suffix.text) {
+			multiplier = suffix.multiplier
+			value = strings.TrimSpace(strings.TrimSuffix(value, suffix.text))
+			break
+		}
+	}
+	n, err := strconv.ParseInt(value, 10, 64)
+	if err != nil || n < 0 {
+		return 0, false
+	}
+	return n * multiplier, true
+}
+
+func ruleDateConditionMatches(condition MailRuleCondition, source time.Time) bool {
+	if source.IsZero() {
+		return false
+	}
+	target, ok := parseRuleDateValue(condition.Value)
+	if !ok {
+		return false
+	}
+	source = source.UTC()
+	switch strings.ToLower(strings.TrimSpace(condition.Operator)) {
+	case "before", "lt":
+		return source.Before(target)
+	case "after", "gt":
+		return source.After(target)
+	case "on", "equals":
+		y1, m1, d1 := source.Date()
+		y2, m2, d2 := target.Date()
+		return y1 == y2 && m1 == m2 && d1 == d2
+	case "not-equals":
+		y1, m1, d1 := source.Date()
+		y2, m2, d2 := target.Date()
+		return y1 != y2 || m1 != m2 || d1 != d2
+	default:
+		return false
+	}
+}
+
+func parseRuleDateValue(raw string) (time.Time, bool) {
+	value := strings.TrimSpace(raw)
+	for _, layout := range []string{time.RFC3339Nano, time.RFC3339, "2006-01-02"} {
+		if t, err := time.Parse(layout, value); err == nil {
+			return t.UTC(), true
+		}
+	}
+	return time.Time{}, false
+}
+
 func (a *App) applyRuleActions(ctx context.Context, mailboxID, messageID string, actions []MailRuleAction) error {
 	now := a.now().UTC().Format(time.RFC3339Nano)
 	for _, action := range normalizeRuleActions(actions, "") {
 		switch action.Type {
 		case "archive":
 			if folderID, err := a.ensureFolder(ctx, mailboxID, "Archive"); err == nil {
-				if _, err := a.db.ExecContext(ctx, `UPDATE messages SET folder_id=?, updated_at=? WHERE id=?`, folderID, now, messageID); err != nil {
+				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.db.ExecContext(ctx, `UPDATE messages SET folder_id=?, updated_at=? WHERE id=?`, folderID, now, messageID); err != nil {
+				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.db.ExecContext(ctx, `UPDATE messages SET folder_id=?, updated_at=? WHERE id=?`, folderID, now, messageID); err != nil {
+				if err := a.moveMessageMaildir(ctx, messageID, folderID); err != nil {
 					return err
 				}
 			}
 		case "star":
-			if _, err := a.db.ExecContext(ctx, `UPDATE messages SET is_starred=1, updated_at=? WHERE id=?`, now, messageID); err != nil {
+			starred := true
+			if err := a.updateMessageMaildirFlags(ctx, messageID, nil, &starred); err != nil {
+				return err
+			}
+			modSeq, err := a.updateMessageModSeq(ctx, messageID, "")
+			if err != nil {
+				return err
+			}
+			if _, err := a.db.ExecContext(ctx, `UPDATE messages SET is_starred=1, imap_modseq=CASE WHEN ? > 0 THEN ? ELSE imap_modseq END, updated_at=? WHERE id=?`, modSeq, modSeq, now, messageID); err != nil {
 				return err
 			}
 		case "mark-read":
-			if _, err := a.db.ExecContext(ctx, `UPDATE messages SET is_read=1, updated_at=? WHERE id=?`, now, messageID); err != nil {
+			read := true
+			if err := a.updateMessageMaildirFlags(ctx, messageID, &read, nil); err != nil {
+				return err
+			}
+			modSeq, err := a.updateMessageModSeq(ctx, messageID, "")
+			if err != nil {
+				return err
+			}
+			if _, err := a.db.ExecContext(ctx, `UPDATE messages SET is_read=1, imap_modseq=CASE WHEN ? > 0 THEN ? ELSE imap_modseq END, updated_at=? WHERE id=?`, modSeq, modSeq, now, messageID); err != nil {
 				return err
 			}
 		case "label":
@@ -1128,19 +1366,21 @@ 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,m.mailbox_id,trim(m.from_addr || ' ' || COALESCE(m.from_name,'')),m.to_addrs,m.subject,m.snippet,m.body_text 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 WHERE `+where, args...)
 	if err != nil {
 		return 0, err
 	}
 	messages := []ruleMessage{}
 	var count int64
 	for rows.Next() {
-		var msg ruleMessage
-		var toAddrs sql.NullString
-		if err := rows.Scan(&msg.ID, &msg.MailboxID, &msg.From, &toAddrs, &msg.Subject, &msg.Snippet, &msg.BodyText); err != nil {
+		var messageID string
+		if err := rows.Scan(&messageID); err != nil {
 			return count, err
 		}
-		msg.To = toAddrs.String
+		msg, ok := a.ruleMessageByID(ctx, messageID)
+		if !ok {
+			continue
+		}
 		if !ruleMatches(rule, msg) {
 			continue
 		}

apps/api/internal/app/router_auth.go

@@ -72,6 +72,10 @@ func (a *App) Router() http.Handler {
 			r.With(a.requirePermission(PermissionMailRead)).Get("/mail/starred", a.handleStarredMessages)
 			r.With(a.requirePermission(PermissionMailRead)).Get("/mail/messages/{id}", a.handleMailMessage)
 			r.With(a.requirePermission(PermissionMailSend)).Post("/mail/send", a.handleMailSend)
+			r.With(a.requirePermission(PermissionMailRead)).Get("/mail/send-queue", a.handleSendQueue)
+			r.With(a.requirePermission(PermissionMailRead)).Get("/mail/send-queue/{id}/audit", a.handleSendQueueAudit)
+			r.With(a.requirePermission(PermissionMailSend)).Post("/mail/send-queue/{id}/retry", a.handleRetrySendQueue)
+			r.With(a.requirePermission(PermissionMailSend)).Delete("/mail/send-queue/{id}", a.handleCancelSendQueue)
 			r.With(a.requirePermission(PermissionMailSchedule)).Get("/mail/scheduled-sends", a.handleScheduledSends)
 			r.With(a.requirePermission(PermissionMailSchedule), a.requirePermission(PermissionMailSend)).Post("/mail/schedule-send", a.handleScheduleSend)
 			r.With(a.requirePermission(PermissionMailSchedule)).Delete("/mail/schedule-send/{id}", a.handleCancelScheduledSend)
@@ -115,9 +119,11 @@ func (a *App) Router() http.Handler {
 			r.With(a.requirePermission(PermissionAliasesUpdate)).Post("/admin/aliases/{id}", a.handleUpdateAlias)
 			r.With(a.requirePermission(PermissionAliasesDelete)).Delete("/admin/aliases/{id}", a.handleDeleteAlias)
 			r.With(a.requirePermission(PermissionMessagesView)).Get("/admin/messages", a.handleAdminMessages)
+			r.With(a.requirePermission(PermissionMessagesView)).Get("/admin/send-audit", a.handleAdminSendAudit)
 			r.With(a.requirePermission(PermissionMessagesRead)).Get("/admin/messages/{id}", a.handleAdminMessage)
 			r.With(a.requirePermission(PermissionMessagesAttachment)).Get("/admin/attachments/{id}", a.handleAdminAttachment)
 			r.With(a.requirePermission(PermissionSettingsView)).Get("/admin/settings", a.handleGetSystemSettings)
+			r.With(a.requirePermission(PermissionSettingsView)).Get("/admin/maildir-sync/health", a.handleMaildirSyncHealth)
 			r.With(a.requirePermission(PermissionSettingsUpdate)).Post("/admin/settings", a.handleUpdateSystemSettings)
 			r.With(a.requirePermission(PermissionSettingsTestSMTP)).Post("/admin/settings/test-smtp", a.handleTestSMTP)
 			r.With(a.requirePermission(PermissionTemplatesView)).Get("/admin/mail-templates", a.handleListMailTemplates)

apps/api/internal/app/send_queue.go

@@ -16,12 +16,14 @@ const (
 	sendQueueStatusSending   = "sending"
 	sendQueueStatusDelivered = "delivered"
 	sendQueueStatusFailed    = "failed"
+	sendQueueStatusCanceled  = "canceled"
 
 	sendAuditAccepted  = "accepted"
 	sendAuditQueued    = "queued"
 	sendAuditDelivered = "delivered"
 	sendAuditFailed    = "failed"
 	sendAuditRetry     = "retry"
+	sendAuditCanceled  = "canceled"
 
 	sendSourceWebmail    = "webmail"
 	sendSourceSubmission = "submission"
@@ -85,7 +87,7 @@ func (a *App) enqueueSend(ctx context.Context, in sendQueueInput) (string, error
 			return "", err
 		}
 		if existingID != id {
-			if status == sendQueueStatusDelivered || (status == sendQueueStatusFailed && attemptCount >= maxAttempts) {
+			if status == sendQueueStatusDelivered || status == sendQueueStatusCanceled || (status == sendQueueStatusFailed && attemptCount >= maxAttempts) {
 				_, err := a.db.ExecContext(ctx, `UPDATE send_queue SET user_id=?,sent_message_id=?,mail_from=?,header_from=?,recipients_json=?,mime_base64=?,status=?,attempt_count=0,next_attempt_at=?,last_error='',updated_at=?,delivered_at=NULL WHERE id=? AND status=?`,
 					in.UserID, in.SentMessageID, normalizeEmail(in.MailFrom), normalizeEmail(in.HeaderFrom), recipientsJSON, mimeBase64, sendQueueStatusQueued, now.Format(time.RFC3339Nano), now.Format(time.RFC3339Nano), existingID, status)
 				if err != nil {

apps/api/internal/app/submission.go

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

apps/api/internal/app/types.go

@@ -62,6 +62,9 @@ type MailFolder struct {
 	Role          string `json:"role"`
 	UnreadCount   int    `json:"unreadCount"`
 	TotalCount    int    `json:"totalCount"`
+	UIDValidity   int64  `json:"uidValidity"`
+	UIDNext       int64  `json:"uidNext"`
+	HighestModSeq int64  `json:"highestModseq"`
 }
 
 type MailLabel struct {
@@ -81,6 +84,8 @@ type MailMessage struct {
 	FolderID       string             `json:"folderId"`
 	Folder         string             `json:"folder"`
 	MessageUID     string             `json:"messageUid"`
+	IMAPUID        int64              `json:"imapUid"`
+	IMAPModSeq     int64              `json:"imapModseq"`
 	MessageID      string             `json:"messageId"`
 	Subject        string             `json:"subject"`
 	From           string             `json:"from"`
@@ -99,6 +104,15 @@ type MailMessage struct {
 	SizeBytes      int64              `json:"sizeBytes"`
 	Labels         []MailLabel        `json:"labels,omitempty"`
 	Attachments    []Attachment       `json:"attachments,omitempty"`
+	Authentication MailAuthentication `json:"authentication"`
+}
+
+type MailAuthentication struct {
+	AuthenticationResults string `json:"authenticationResults"`
+	ReceivedSPF           string `json:"receivedSpf"`
+	SPF                   string `json:"spf"`
+	DKIM                  string `json:"dkim"`
+	DMARC                 string `json:"dmarc"`
 }
 
 type Attachment struct {
@@ -168,9 +182,11 @@ type MailRule struct {
 }
 
 type MailRuleCondition struct {
-	Field    string `json:"field"`
-	Operator string `json:"operator"`
-	Value    string `json:"value"`
+	Field      string              `json:"field,omitempty"`
+	Operator   string              `json:"operator,omitempty"`
+	Value      string              `json:"value,omitempty"`
+	MatchMode  string              `json:"matchMode,omitempty"`
+	Conditions []MailRuleCondition `json:"conditions,omitempty"`
 }
 
 type MailRuleAction struct {
@@ -193,7 +209,10 @@ type MailStats struct {
 	UnreadMessages  int64                  `json:"unreadMessages"`
 	StarredMessages int64                  `json:"starredMessages"`
 	AttachmentCount int64                  `json:"attachmentCount"`
+	AttachmentBytes int64                  `json:"attachmentBytes"`
 	StorageBytes    int64                  `json:"storageBytes"`
+	QuotaBytes      int64                  `json:"quotaBytes"`
+	QuotaUsedPct    float64                `json:"quotaUsedPct"`
 	ByFolder        []MailStatsFolderCount `json:"byFolder"`
 }
 
@@ -204,3 +223,40 @@ type MailStatsFolderCount struct {
 	Unread int64  `json:"unread"`
 	Bytes  int64  `json:"bytes"`
 }
+
+type SendQueueEntry struct {
+	ID            string     `json:"id"`
+	MailboxID     string     `json:"mailboxId"`
+	SentMessageID string     `json:"sentMessageId"`
+	MessageID     string     `json:"messageId"`
+	Subject       string     `json:"subject"`
+	Source        string     `json:"source"`
+	MailFrom      string     `json:"mailFrom"`
+	HeaderFrom    string     `json:"headerFrom"`
+	Recipients    []string   `json:"recipients"`
+	Status        string     `json:"status"`
+	AttemptCount  int        `json:"attemptCount"`
+	MaxAttempts   int        `json:"maxAttempts"`
+	NextAttemptAt time.Time  `json:"nextAttemptAt"`
+	LastError     string     `json:"lastError"`
+	CreatedAt     time.Time  `json:"createdAt"`
+	UpdatedAt     time.Time  `json:"updatedAt"`
+	DeliveredAt   *time.Time `json:"deliveredAt,omitempty"`
+}
+
+type SendAuditEvent struct {
+	ID             string    `json:"id"`
+	QueueID        string    `json:"queueId"`
+	MailboxID      string    `json:"mailboxId"`
+	MailboxAddress string    `json:"mailboxAddress,omitempty"`
+	SentMessageID  string    `json:"sentMessageId"`
+	MessageID      string    `json:"messageId,omitempty"`
+	Source         string    `json:"source"`
+	Event          string    `json:"event"`
+	Status         string    `json:"status"`
+	MailFrom       string    `json:"mailFrom"`
+	HeaderFrom     string    `json:"headerFrom"`
+	Recipients     []string  `json:"recipients"`
+	Error          string    `json:"error,omitempty"`
+	CreatedAt      time.Time `json:"createdAt"`
+}

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

@@ -56,12 +56,14 @@ 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; createdAt: string }
 export type Alias = { id: string; domainId: string; source: string; destination: string; enabled: boolean; createdAt: string }
-export type MailFolder = { id: string; name: string; role: string; unreadCount: number; totalCount: number }
+export type MailFolder = { id: string; name: string; role: string; 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 MailAuthentication = { authenticationResults: string; receivedSpf: string; spf: string; dkim: string; dmarc: string }
 export type MailMessage = {
-  id: string; mailboxId?: string; mailboxAddress?: string; ownerEmail?: string; recipientAddress?: string; folderId: string; folder: string; messageUid: string; messageId: string; subject: string; from: string; fromName?: string; to: string[]; cc: string[]; bcc?: string[]; sentAt: string; receivedAt: string; snippet: string; bodyText?: string; bodyHtml?: string; isRead: boolean; isStarred: boolean; hasAttachments: boolean; sizeBytes: number; attachments?: Attachment[]
+  id: string; mailboxId?: string; mailboxAddress?: string; ownerEmail?: string; recipientAddress?: string; folderId: string; folder: string; messageUid: string; imapUid: number; imapModseq: number; messageId: string; subject: string; from: string; fromName?: string; to: string[]; cc: string[]; bcc?: string[]; sentAt: string; receivedAt: string; snippet: string; bodyText?: string; bodyHtml?: string; isRead: boolean; isStarred: boolean; hasAttachments: boolean; sizeBytes: number; attachments?: Attachment[]
   labels?: MailLabel[]
+  authentication?: MailAuthentication
 }
 export type DNSRecord = { type: string; name: string; value: string; ttl: number }
 export type DNSCheckResult = { domain: string; status: string; checks: Record<string, { ok: boolean; message: string; found?: string[] }> }
@@ -70,15 +72,73 @@ export type SendPayload = { mailboxId?: string; to: string[]; cc: string[]; bcc:
 export type DraftPayload = Omit<SendPayload, "attachments"> & { attachments?: SendPayload["attachments"] }
 export type ScheduleSendPayload = SendPayload & { draftId?: string; sendAt: string }
 export type ScheduledSend = { id: string; mailboxId: string; draftId?: string; subject: string; to: string[]; snippet: string; sendAt: string; status: "pending" | "sending" | "sent" | "failed" | "cancelled"; error?: string; createdAt: string; updatedAt: string; sentAt?: string }
+export type SendQueueStatus = "queued" | "sending" | "delivered" | "failed" | "canceled"
+export type SendQueueItem = {
+  id: string
+  mailboxId: string
+  sentMessageId?: string
+  messageId?: string
+  mailFrom?: string
+  headerFrom?: string
+  subject: string
+  recipients: string[]
+  source: string
+  status: SendQueueStatus
+  attemptCount: number
+  maxAttempts: number
+  nextAttemptAt?: string
+  lastError?: string
+  error?: string
+  failureReason?: string
+  createdAt: string
+  updatedAt: string
+  deliveredAt?: string
+}
+export type SendQueueAuditEvent = {
+  id: string
+  queueId?: string
+  mailboxId?: string
+  mailboxAddress?: string
+  sentMessageId?: string
+  messageId?: string
+  source?: string
+  status?: SendQueueStatus
+  event?: string
+  eventType?: string
+  mailFrom?: string
+  headerFrom?: string
+  recipients?: string[]
+  message?: string
+  error?: string
+  attemptCount?: number
+  createdAt: string
+}
 export type Contact = { id: string; name: string; email: string; note: string; createdAt: string }
 export type MailSignature = { id: string; mailboxId: string; name: string; content: string; isDefault: boolean; createdAt: string; updatedAt: string }
-export type MailRuleCondition = { field: "from" | "to" | "subject" | "body"; operator: "contains" | "not-contains" | "equals" | "not-equals" | "starts-with" | "ends-with"; value: string }
+export type MailRuleConditionField = "from" | "to" | "cc" | "subject" | "body" | "attachment" | "size" | "date"
+export type MailRuleConditionOperator = "contains" | "not-contains" | "equals" | "not-equals" | "starts-with" | "ends-with" | "gt" | "gte" | "lt" | "lte" | "before" | "after" | "on"
+export type MailRuleCondition = { field?: MailRuleConditionField; operator?: MailRuleConditionOperator; value?: string; matchMode?: "all" | "any"; conditions?: MailRuleCondition[] }
 export type MailRuleAction = { type: "archive" | "trash" | "star" | "mark-read" | "label" | "move"; value?: string; labelId?: string }
 export type MailRule = { id: string; mailboxId: string; name: string; matchMode: "all" | "any"; conditions: MailRuleCondition[]; actions: MailRuleAction[]; applyToExisting: boolean; stopProcessing: boolean; fromContains: string; subjectContains: string; action: "archive" | "trash" | "star" | "mark-read" | "label" | "move"; enabled: boolean; createdAt: string; appliedExistingCount?: number }
 export type BlockedSender = { id: string; mailboxId: string; email: string; reason: string; createdAt: string }
-export type MailStats = { totalMessages: number; unreadMessages: number; starredMessages: number; attachmentCount: number; storageBytes: number; byFolder: { folder: string; role: string; count: number; unread: number; bytes: number }[] }
+export type MailStats = { totalMessages: number; unreadMessages: number; starredMessages: number; attachmentCount: number; attachmentBytes: number; storageBytes: number; quotaBytes: number; quotaUsedPct: number; byFolder: { folder: string; role: string; count: number; unread: number; bytes: number }[] }
 export type MailTemplate = { key: string; name: string; subject: string; bodyText: string; bodyHtml: string; updatedAt: string }
 export type MailboxApplyOptions = { enabled: boolean; domains: Domain[]; reservedPrefixes?: string[] }
+export type MaildirSyncCounts = { filesScanned: number; imported: number; backfilled: number; cleaned: number; fileErrors: number }
+export type MaildirSyncRun = { startedAt: string; finishedAt?: string; durationMs: number; status: "running" | "success" | "partial" | "error"; error?: string; counts: MaildirSyncCounts }
+export type MaildirSyncHealth = {
+  configured: boolean
+  enabled: boolean
+  root: string
+  scanSeconds: number
+  workerStarted: boolean
+  running: boolean
+  lastRun?: MaildirSyncRun
+  lastError?: string
+  nextRunAt?: string
+  recentErrors: string[]
+  summary: MaildirSyncCounts
+}
 export type SystemSettings = {
   publicHostname: string
   publicBaseUrl: string

apps/web/src/lib/api.ts

@@ -1,4 +1,4 @@
-import type { User, AdminUser, AdminOverview, Domain, Mailbox, Alias, MailFolder, Attachment, MailLabel, MailMessage, DNSRecord, DNSCheckResult, ListResponse, SendPayload, DraftPayload, ScheduleSendPayload, ScheduledSend, Contact, MailSignature, MailRule, MailRuleCondition, MailRuleAction, BlockedSender, MailStats, MailboxApplyOptions, MailTemplate, SystemSettings, SystemSettingsPayload, PublicSettings, LoginPayload, LoginResponse, RegisterPayload, PermissionGroup, PermissionInfo, PermissionKey, PermissionLimits } from "./api-types"
+import type { User, AdminUser, AdminOverview, Domain, Mailbox, Alias, MailFolder, Attachment, MailLabel, MailMessage, DNSRecord, DNSCheckResult, ListResponse, SendPayload, DraftPayload, ScheduleSendPayload, ScheduledSend, SendQueueItem, SendQueueAuditEvent, SendQueueStatus, Contact, MailSignature, MailRule, MailRuleCondition, MailRuleAction, BlockedSender, MailStats, MailboxApplyOptions, MailTemplate, MaildirSyncHealth, SystemSettings, SystemSettingsPayload, PublicSettings, LoginPayload, LoginResponse, RegisterPayload, PermissionGroup, PermissionInfo, PermissionKey, PermissionLimits } from "./api-types"
 export * from "./api-types"
 
 const REQUEST_TIMEOUT_MS = 15_000
@@ -94,7 +94,19 @@ export const api = {
     return request<ListResponse<MailMessage>>(`/api/admin/messages${suffix ? `?${suffix}` : ""}`)
   },
   adminMessage: (id: string) => request<MailMessage>(`/api/admin/messages/${id}`),
+  adminSendAudit: (params: { mailboxId?: string; messageId?: string; event?: string; from?: string; to?: string; cursor?: string } = {}) => {
+    const query = new URLSearchParams()
+    if (params.mailboxId) query.set("mailboxId", params.mailboxId)
+    if (params.messageId) query.set("messageId", params.messageId)
+    if (params.event) query.set("event", params.event)
+    if (params.from) query.set("from", params.from)
+    if (params.to) query.set("to", params.to)
+    if (params.cursor) query.set("cursor", params.cursor)
+    const suffix = query.toString()
+    return request<ListResponse<SendQueueAuditEvent>>(`/api/admin/send-audit${suffix ? `?${suffix}` : ""}`)
+  },
   systemSettings: () => request<SystemSettings>("/api/admin/settings"),
+  maildirSyncHealth: () => request<MaildirSyncHealth>("/api/admin/maildir-sync/health"),
   updateSystemSettings: (payload: SystemSettingsPayload) => request<SystemSettings>("/api/admin/settings", { method: "POST", body: JSON.stringify(payload) }),
   testSmtp: (to: string) => request<{ ok: boolean }>("/api/admin/settings/test-smtp", { method: "POST", body: JSON.stringify({ to }), timeoutMs: MAIL_DELIVERY_TIMEOUT_MS }),
   mailTemplates: () => request<ListResponse<MailTemplate>>("/api/admin/mail-templates"),
@@ -130,6 +142,17 @@ export const api = {
   scheduledSends: (mailboxId?: string) => request<ListResponse<ScheduledSend>>(`/api/mail/scheduled-sends${mailboxId ? `?mailboxId=${encodeURIComponent(mailboxId)}` : ""}`),
   scheduleSend: (payload: ScheduleSendPayload) => request<ScheduledSend>("/api/mail/schedule-send", { method: "POST", body: JSON.stringify(payload), timeoutMs: MAIL_DELIVERY_TIMEOUT_MS }),
   cancelScheduledSend: (id: string) => request<{ ok: boolean }>(`/api/mail/schedule-send/${id}`, { method: "DELETE" }),
+  sendQueue: (params: { mailboxId?: string; status?: SendQueueStatus | "all"; cursor?: string } = {}) => {
+    const query = new URLSearchParams()
+    if (params.mailboxId) query.set("mailboxId", params.mailboxId)
+    if (params.status && params.status !== "all") query.set("status", params.status)
+    if (params.cursor) query.set("cursor", params.cursor)
+    const suffix = query.toString()
+    return request<ListResponse<SendQueueItem>>(`/api/mail/send-queue${suffix ? `?${suffix}` : ""}`)
+  },
+  sendQueueAudit: (id: string) => request<ListResponse<SendQueueAuditEvent>>(`/api/mail/send-queue/${id}/audit`),
+  retrySendQueue: (id: string) => request<SendQueueItem>(`/api/mail/send-queue/${id}/retry`, { method: "POST", timeoutMs: MAIL_DELIVERY_TIMEOUT_MS }),
+  cancelSendQueue: (id: string) => request<SendQueueItem>(`/api/mail/send-queue/${id}`, { method: "DELETE" }),
   saveDraft: (payload: DraftPayload, id?: string) => request<MailMessage>(id ? `/api/mail/drafts/${id}` : "/api/mail/drafts", { method: "POST", body: JSON.stringify(payload), timeoutMs: MAIL_DELIVERY_TIMEOUT_MS }),
   deleteDraft: (id: string) => request<{ ok: boolean }>(`/api/mail/drafts/${id}`, { method: "DELETE" }),
   markRead: (id: string, read: boolean) => request<{ ok: boolean }>(`/api/mail/messages/${id}/mark-read`, { method: "POST", body: JSON.stringify({ read }) }),

apps/web/src/pages/admin.tsx

@@ -2,8 +2,8 @@ import * as React from "react"
 import DOMPurify from "dompurify"
 import { useSearchParams } from "react-router-dom"
 import { useInfiniteQuery, useMutation, useQuery, useQueryClient } from "@tanstack/react-query"
-import { ArrowRight, BookOpen, CheckCircle2, Circle, Copy, ExternalLink, GitBranch, Github, Globe2, Mailbox, MoreHorizontal, Plus, RefreshCcw, Scale, Search, ShieldCheck, Star, Trash2, Users } from "lucide-react"
-import { api, AdminUser, Alias, DNSRecord, Domain, Mailbox as MailboxType, MailMessage, MailTemplate, PermissionGroup, PermissionInfo, PermissionLimits, SystemSettings } from "@/lib/api"
+import { ArrowRight, BookOpen, CheckCircle2, Circle, ClipboardList, Copy, ExternalLink, GitBranch, Github, Globe2, Mailbox, MoreHorizontal, Plus, RefreshCcw, Scale, Search, ShieldCheck, Star, Trash2, Users } from "lucide-react"
+import { api, AdminUser, Alias, DNSRecord, Domain, Mailbox as MailboxType, MailMessage, MailTemplate, MaildirSyncHealth, PermissionGroup, PermissionInfo, PermissionLimits, SystemSettings } from "@/lib/api"
 import { cn, decodeMimeHeader, formatBytes, formatDate } from "@/lib/utils"
 import { Button } from "@/components/ui/button"
 import { Input } from "@/components/ui/input"
@@ -25,7 +25,7 @@ import { useToast } from "@/hooks/use-toast"
 import { hasAnyPermission, hasPermission } from "@/lib/permissions"
 import type { PermissionKey } from "@/lib/api-types"
 
-type Section = "overview" | "users" | "permissionGroups" | "domains" | "mailboxes" | "aliases" | "messages" | "settings"
+type Section = "overview" | "users" | "permissionGroups" | "domains" | "mailboxes" | "aliases" | "messages" | "sendAudit" | "settings"
 type PendingConfirm = { title: string; description?: string; confirmText: string; onConfirm: () => void }
 
 const sectionLabels: Record<Section, string> = {
@@ -36,6 +36,7 @@ const sectionLabels: Record<Section, string> = {
   mailboxes: "邮箱账号",
   aliases: "别名转发",
   messages: "全部邮件",
+  sendAudit: "发送审计",
   settings: "系统设置",
 }
 const sectionKeys = Object.keys(sectionLabels) as Section[]
@@ -47,6 +48,7 @@ const sectionPermissions: Record<Section, PermissionKey[]> = {
   mailboxes: ["admin.mailboxes.view"],
   aliases: ["admin.aliases.view"],
   messages: ["admin.messages.view"],
+  sendAudit: ["admin.messages.view"],
   settings: ["admin.settings.view", "admin.templates.view"],
 }
 const projectRepositoryUrl = "https://github.com/LanQin996/LanQin-Email"
@@ -108,6 +110,7 @@ export function AdminPage() {
         {section === "mailboxes" && <MailboxesSection mailboxes={mailboxItems} users={userItems} domains={domainItems} />}
         {section === "aliases" && <AliasesSection aliases={aliasItems} domains={domainItems} />}
         {section === "messages" && <AdminMessagesSection mailboxes={mailboxItems} />}
+        {section === "sendAudit" && <AdminSendAuditSection mailboxes={mailboxItems} />}
         {section === "settings" && <SystemSettingsSection settings={settings.data} domains={domainItems} />}
       </main>
     </ScrollArea>
@@ -851,6 +854,119 @@ function AdminMessagesSection({ mailboxes }: { mailboxes: MailboxType[] }) {
   )
 }
 
+function AdminSendAuditSection({ mailboxes }: { mailboxes: MailboxType[] }) {
+  const qc = useQueryClient()
+  const [mailboxId, setMailboxId] = React.useState("all")
+  const [event, setEvent] = React.useState("all")
+  const [messageId, setMessageId] = React.useState("")
+  const [from, setFrom] = React.useState("")
+  const [to, setTo] = React.useState("")
+  const audit = useInfiniteQuery({
+    queryKey: ["admin", "send-audit", mailboxId, event, messageId, from, to],
+    queryFn: ({ pageParam }) => api.adminSendAudit({
+      mailboxId: mailboxId === "all" ? "" : mailboxId,
+      event: event === "all" ? "" : event,
+      messageId: messageId.trim(),
+      from,
+      to,
+      cursor: typeof pageParam === "string" ? pageParam : "",
+    }),
+    initialPageParam: "",
+    getNextPageParam: (lastPage) => lastPage.nextCursor || undefined,
+  })
+  const items = audit.data?.pages.flatMap((page) => page.items || []) || []
+  return (
+    <Card>
+      <CardHeader>
+        <div className="flex flex-col gap-3 md:flex-row md:items-center md:justify-between">
+          <CardTitle className="flex items-center gap-2"><ClipboardList className="h-5 w-5" />发送审计</CardTitle>
+          <Button variant="outline" size="sm" onClick={() => qc.invalidateQueries({ queryKey: ["admin", "send-audit"] })}>
+            <RefreshCcw className="h-4 w-4" />刷新
+          </Button>
+        </div>
+      </CardHeader>
+      <CardContent className="space-y-4">
+        <div className="grid gap-3 lg:grid-cols-[minmax(0,1fr)_180px_180px_160px_160px]">
+          <div className="relative">
+            <Search className="absolute left-3 top-2.5 h-4 w-4 text-muted-foreground" />
+            <Input value={messageId} onChange={(event) => setMessageId(event.target.value)} placeholder="Message-ID 或已发送邮件 ID" className="pl-9" />
+          </div>
+          <Select value={mailboxId} onValueChange={setMailboxId}>
+            <SelectTrigger><SelectValue /></SelectTrigger>
+            <SelectContent>
+              <SelectItem value="all">全部邮箱</SelectItem>
+              {mailboxes.map((mailbox) => <SelectItem key={mailbox.id} value={mailbox.id}>{mailbox.address}</SelectItem>)}
+            </SelectContent>
+          </Select>
+          <Select value={event} onValueChange={setEvent}>
+            <SelectTrigger><SelectValue /></SelectTrigger>
+            <SelectContent>
+              <SelectItem value="all">全部事件</SelectItem>
+              {sendAuditEvents.map((item) => <SelectItem key={item} value={item}>{sendAuditEventLabel(item)}</SelectItem>)}
+            </SelectContent>
+          </Select>
+          <Input type="date" value={from} onChange={(event) => setFrom(event.target.value)} aria-label="开始日期" />
+          <Input type="date" value={to} onChange={(event) => setTo(event.target.value)} aria-label="结束日期" />
+        </div>
+        <div className="space-y-3 md:hidden">
+          {items.map((item) => (
+            <div key={item.id} className="rounded-lg border p-4">
+              <div className="flex items-start justify-between gap-3">
+                <div className="min-w-0">
+                  <div className="font-medium">{sendAuditEventLabel(item.event || "")}</div>
+                  <div className="mt-1 truncate text-xs text-muted-foreground">{item.mailboxAddress || item.mailboxId || "-"}</div>
+                </div>
+                <Badge variant={sendAuditBadgeVariant(item.event)}>{item.status || item.event || "-"}</Badge>
+              </div>
+              <div className="mt-3 space-y-2 text-sm text-muted-foreground">
+                <div className="truncate">收件人：{(item.recipients || []).join(", ") || "-"}</div>
+                <div className="truncate">Message-ID：{item.messageId || item.sentMessageId || "-"}</div>
+                {item.error && <div className="line-clamp-2 text-destructive">错误：{item.error}</div>}
+              </div>
+              <div className="mt-3 text-xs text-muted-foreground">{formatDate(item.createdAt)}</div>
+            </div>
+          ))}
+        </div>
+        <div className="hidden md:block">
+          <Table>
+            <TableHeader>
+              <TableRow>
+                <TableHead>事件</TableHead>
+                <TableHead>邮箱</TableHead>
+                <TableHead>收件人</TableHead>
+                <TableHead>Message-ID</TableHead>
+                <TableHead>错误</TableHead>
+                <TableHead>时间</TableHead>
+              </TableRow>
+            </TableHeader>
+            <TableBody>
+              {items.map((item) => (
+                <TableRow key={item.id}>
+                  <TableCell><Badge variant={sendAuditBadgeVariant(item.event)}>{sendAuditEventLabel(item.event || "")}</Badge></TableCell>
+                  <TableCell className="max-w-[220px] truncate">{item.mailboxAddress || item.mailboxId || "-"}</TableCell>
+                  <TableCell className="max-w-[260px] truncate" title={(item.recipients || []).join(", ")}>{(item.recipients || []).join(", ") || "-"}</TableCell>
+                  <TableCell className="max-w-[240px] truncate" title={item.messageId || item.sentMessageId || ""}>{item.messageId || item.sentMessageId || "-"}</TableCell>
+                  <TableCell className="max-w-[260px] truncate text-destructive" title={item.error || ""}>{item.error || "-"}</TableCell>
+                  <TableCell className="whitespace-nowrap text-muted-foreground">{formatDate(item.createdAt)}</TableCell>
+                </TableRow>
+              ))}
+            </TableBody>
+          </Table>
+        </div>
+        {audit.isLoading && <Empty text="加载中..." />}
+        {!audit.isLoading && items.length === 0 && <Empty text="暂无发送审计" />}
+        {!audit.isLoading && audit.hasNextPage && (
+          <div className="flex justify-center">
+            <Button variant="outline" size="sm" disabled={audit.isFetchingNextPage} onClick={() => audit.fetchNextPage()}>
+              {audit.isFetchingNextPage ? "加载中..." : "加载更多"}
+            </Button>
+          </div>
+        )}
+      </CardContent>
+    </Card>
+  )
+}
+
 function SystemSettingsSection({ settings, domains }: { settings?: SystemSettings; domains: Domain[] }) {
   const me = useMe()
   const user = me.data?.user
@@ -864,6 +980,7 @@ function SystemSettingsSection({ settings, domains }: { settings?: SystemSetting
   const canResetTemplates = hasPermission(user, "admin.templates.reset")
   const templates = useQuery({ queryKey: ["admin", "mail-templates"], queryFn: api.mailTemplates, enabled: canViewTemplates })
   const [settingsTab, setSettingsTab] = React.useState<"base" | "smtp" | "storage" | "mail" | "templates" | "security" | "about">("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)
   const [openRegistration, setOpenRegistration] = React.useState(false)
@@ -912,6 +1029,7 @@ function SystemSettingsSection({ settings, domains }: { settings?: SystemSetting
     }),
     onSuccess: () => {
       qc.invalidateQueries({ queryKey: ["admin", "settings"] })
+      qc.invalidateQueries({ queryKey: ["admin", "maildir-sync", "health"] })
       qc.invalidateQueries({ queryKey: ["dns-records"] })
       qc.invalidateQueries({ queryKey: ["public-settings"] })
       toast({ title: "系统设置已保存" })
@@ -1002,12 +1120,15 @@ function SystemSettingsSection({ settings, domains }: { settings?: SystemSetting
         </CardContent>
       </Card>}
 
-      {settingsTab === "storage" && <Card>
+      {settingsTab === "storage" && <div className="space-y-6">
+        <Card>
           <CardHeader><CardTitle>存储设置</CardTitle></CardHeader>
           <CardContent>
             <Field name="maildirRoot" label="Maildir 根目录" defaultValue={settings?.maildirRoot || ""} required={false} />
           </CardContent>
-      </Card>}
+        </Card>
+        <MaildirSyncHealthCard health={maildirHealth.data} loading={maildirHealth.isLoading} error={maildirHealth.error} onRefresh={() => maildirHealth.refetch()} refreshing={maildirHealth.isFetching} fallbackRoot={settings?.maildirRoot || ""} />
+      </div>}
 
       {settingsTab === "mail" && <Card>
         <CardHeader><CardTitle>邮件设置</CardTitle></CardHeader>
@@ -1081,6 +1202,102 @@ function SystemSettingsSection({ settings, domains }: { settings?: SystemSetting
   )
 }
 
+function MaildirSyncHealthCard({ health, loading, error, onRefresh, refreshing, fallbackRoot }: { health?: MaildirSyncHealth; loading: boolean; error: Error | null; onRefresh: () => void; refreshing: boolean; fallbackRoot: string }) {
+  const root = health?.root || fallbackRoot
+  const configured = health?.configured ?? !!root
+  const lastRun = health?.lastRun
+  const counters = lastRun?.counts || health?.summary
+  const recentErrors = health?.recentErrors || []
+  const status = health?.running ? "running" : lastRun?.status || (configured ? "idle" : "disabled")
+  return (
+    <Card>
+      <CardHeader>
+        <div className="flex flex-col gap-3 sm:flex-row sm:items-center sm:justify-between">
+          <div className="space-y-1">
+            <CardTitle>Maildir 同步健康</CardTitle>
+            <div className="break-all text-xs text-muted-foreground">{root || "未配置 Maildir 根目录"}</div>
+          </div>
+          <div className="flex items-center gap-2">
+            <Badge variant={configured ? "default" : "secondary"}>{configured ? "已配置" : "未配置"}</Badge>
+            <Badge variant={health?.running ? "default" : health?.workerStarted ? "outline" : "secondary"}>{health?.running ? "运行中" : health?.workerStarted ? "worker 已启动" : "worker 未启动"}</Badge>
+            <Button type="button" variant="outline" size="sm" onClick={onRefresh} disabled={loading || refreshing}>
+              <RefreshCcw className={cn("mr-2 h-4 w-4", refreshing && "animate-spin")} />
+              刷新
+            </Button>
+          </div>
+        </div>
+      </CardHeader>
+      <CardContent className="space-y-4">
+        {error && <div className="rounded-lg border border-destructive/40 bg-destructive/10 px-3 py-2 text-sm text-destructive">{queryErrorMessage(error)}</div>}
+        <div className="grid gap-3 md:grid-cols-2 xl:grid-cols-4">
+          <InfoLine label="当前状态" value={<MaildirStatusBadge status={status} />} />
+          <InfoLine label="最近开始" value={formatOptionalDate(lastRun?.startedAt)} />
+          <InfoLine label="最近结束" value={formatOptionalDate(lastRun?.finishedAt)} />
+          <InfoLine label="最近耗时" value={formatDuration(lastRun?.durationMs)} />
+          <InfoLine label="扫描间隔" value={health?.scanSeconds ? `${health.scanSeconds} 秒` : "-"} />
+          <InfoLine label="下次运行" value={formatOptionalDate(health?.nextRunAt)} />
+          <InfoLine label="最后错误" value={lastRun?.error || health?.lastError || "-"} />
+          <InfoLine label="错误数" value={counterValue(counters, "fileErrors")} />
+        </div>
+        <div className="grid gap-3 sm:grid-cols-2 lg:grid-cols-4">
+          {maildirCounterRows(counters).map((item) => <InfoBox key={item.key} label={item.label} value={item.value} />)}
+        </div>
+        <div className="space-y-2">
+          <div className="text-sm font-medium">最近错误</div>
+          {recentErrors.length === 0 && <Empty text={loading ? "正在读取同步状态..." : "暂无同步错误"} />}
+          {recentErrors.length > 0 && (
+            <div className="space-y-2">
+              {recentErrors.slice(0, 5).map((item, index) => (
+                <div key={`${item}-${index}`} className="rounded-lg border px-3 py-2 text-sm">
+                  <div className="break-words text-destructive">{item || "未知错误"}</div>
+                </div>
+              ))}
+            </div>
+          )}
+        </div>
+      </CardContent>
+    </Card>
+  )
+}
+
+function MaildirStatusBadge({ status }: { status: string }) {
+	const normalized = status.toLowerCase()
+	if (normalized === "running") return <Badge>运行中</Badge>
+	if (["ok", "success", "succeeded", "idle"].includes(normalized)) return <Badge variant="outline">{normalized === "idle" ? "等待下次扫描" : "正常"}</Badge>
+	if (normalized === "partial") return <Badge variant="secondary">部分成功</Badge>
+	if (["error", "failed", "failure"].includes(normalized)) return <Badge variant="destructive">失败</Badge>
+	if (["disabled", "not_configured"].includes(normalized)) return <Badge variant="secondary">未启用</Badge>
+	return <Badge variant="secondary">{status || "-"}</Badge>
+}
+
+function maildirCounterRows(counters?: Record<string, number | undefined>) {
+  return [
+    { key: "filesScanned", label: "扫描文件", value: counterValue(counters, "filesScanned") },
+    { key: "imported", label: "导入", value: counterValue(counters, "imported") },
+    { key: "backfilled", label: "回填", value: counterValue(counters, "backfilled") },
+    { key: "cleaned", label: "清理", value: counterValue(counters, "cleaned") },
+    { key: "fileErrors", label: "文件错误", value: counterValue(counters, "fileErrors") },
+  ]
+}
+
+function counterValue(counters: Record<string, number | undefined> | undefined, key: string) {
+  return Number(counters?.[key] || 0)
+}
+
+function formatOptionalDate(value?: string) {
+  return value ? formatDate(value) || "-" : "-"
+}
+
+function formatDuration(value?: number) {
+  if (!value) return "-"
+  if (value < 1000) return `${value} ms`
+  return `${(value / 1000).toFixed(value < 10_000 ? 1 : 0)} 秒`
+}
+
+function queryErrorMessage(error: unknown) {
+  return error instanceof Error ? error.message : "读取 Maildir 同步健康失败"
+}
+
 function parseSemver(tag: string): number[] {
   return (tag.startsWith("v") ? tag.slice(1) : tag).split(".").map(Number)
 }
@@ -1370,6 +1587,26 @@ function adminSenderTitle(message: MailMessage) {
   return name ? `${name} <${from}>` : from
 }
 
+const sendAuditEvents = ["accepted", "queued", "retry", "delivered", "failed", "canceled"]
+
+function sendAuditEventLabel(event: string) {
+  switch (event) {
+    case "accepted": return "已接受"
+    case "queued": return "已入队"
+    case "retry": return "重试"
+    case "delivered": return "已投递"
+    case "failed": return "失败"
+    case "canceled": return "已取消"
+    default: return event || "-"
+  }
+}
+
+function sendAuditBadgeVariant(event?: string) {
+  if (event === "failed") return "destructive"
+  if (event === "delivered" || event === "accepted") return "default"
+  return "secondary"
+}
+
 function Stat({ icon, label, value }: { icon: React.ReactNode; label: string; value: React.ReactNode }) {
   return <Card><CardContent className="flex items-center gap-3 p-4 sm:gap-4 sm:p-5"><div className="grid h-9 w-9 shrink-0 place-items-center rounded-lg bg-muted text-foreground sm:h-10 sm:w-10">{icon}</div><div className="min-w-0"><div className="truncate text-xl font-semibold tracking-tight sm:text-2xl">{value}</div><div className="text-xs text-muted-foreground">{label}</div></div></CardContent></Card>
 }

apps/web/src/pages/mail.tsx

@@ -12,8 +12,8 @@ import Placeholder from "@tiptap/extension-placeholder"
 import { BackgroundColor, Color, FontFamily, FontSize, TextStyle } from "@tiptap/extension-text-style"
 import { useNavigate } from "react-router-dom"
 import type { ImperativePanelHandle } from "react-resizable-panels"
-import { AlignCenter, AlignLeft, AlignRight, Archive, ArrowLeft, Bold, Calendar, Check, ChevronDown, ChevronsUpDown, Clock3, Code2, Copy, Ellipsis, Eraser, Eye, FileText, Forward, Highlighter, Image, Inbox, IndentDecrease, IndentIncrease, Italic, Link, List, ListOrdered, Mail, MailCheck, Moon, PanelLeftClose, PanelLeftOpen, Paperclip, Pencil, PencilLine, Plus, Quote, Redo2, RefreshCcw, Reply, Search, Send, Settings, ShieldCheck, Signature, SlidersHorizontal, Smile, Star, Strikethrough, Sun, Tag, Trash2, Type, Underline, Undo2, X } from "lucide-react"
-import { api, ListResponse, Mailbox, MailFolder, MailLabel, MailMessage, SendPayload, DraftPayload, ScheduledSend, PermissionLimits } from "@/lib/api"
+import { AlignCenter, AlignLeft, AlignRight, Archive, ArrowLeft, Bold, Calendar, Check, ChevronDown, ChevronsUpDown, Clock3, Code2, Copy, Ellipsis, Eraser, Eye, FileText, Forward, Highlighter, History, Image, Inbox, IndentDecrease, IndentIncrease, Italic, Link, List, ListOrdered, Mail, MailCheck, Moon, PanelLeftClose, PanelLeftOpen, Paperclip, Pencil, PencilLine, Plus, Quote, Redo2, RefreshCcw, Reply, RotateCcw, Search, Send, Settings, ShieldCheck, Signature, SlidersHorizontal, Smile, Star, Strikethrough, Sun, Tag, Trash2, Type, Underline, Undo2, X } from "lucide-react"
+import { api, ListResponse, Mailbox, MailFolder, MailLabel, MailMessage, SendPayload, DraftPayload, ScheduledSend, SendQueueItem, SendQueueAuditEvent, SendQueueStatus, PermissionLimits } from "@/lib/api"
 import { cn, decodeMimeHeader, formatBytes, formatDate, formatDateTime, generateLabelColor } from "@/lib/utils"
 import { applyTheme, getInitialTheme } from "@/lib/theme"
 import { useDisplayMode } from "@/lib/display-mode"
@@ -61,7 +61,7 @@ const folderLabels: Record<string, string> = {
 
 type ComposeDraft = { key: string; id?: string; mailboxId?: string; to?: string; cc?: string; bcc?: string; subject?: string; text?: string; html?: string; files?: File[]; isDraft?: boolean }
 type MailFilter = "all" | "unread" | "starred" | "attachments"
-type MailView = "folder" | "starred" | "label" | "scheduled"
+type MailView = "folder" | "starred" | "label" | "scheduled" | "sendQueue"
 type MailListResponse = { items?: MailMessage[]; nextCursor?: string }
 type PendingConfirm = { title: string; description?: string; confirmText: string; onConfirm: () => void }
 type MailNotificationState = { latestId: string; latestReceivedAt: string }
@@ -69,6 +69,7 @@ type ComposeSendIntent = { title: string; description: string; confirmText: stri
 type MailMenuItem =
   | { type: "starred"; key: string; label: string; icon: React.ReactNode; count: number }
   | { type: "scheduled"; key: string; label: string; icon: React.ReactNode; count: number }
+  | { type: "sendQueue"; key: string; label: string; icon: React.ReactNode; count: number }
   | { type: "folder"; key: string; folderName: string; label: string; icon: React.ReactNode; count: number }
 
 const filterLabels: Record<MailFilter, string> = {
@@ -103,6 +104,9 @@ export function MailPage() {
   const [bulkPending, setBulkPending] = React.useState(false)
   const [pendingConfirm, setPendingConfirm] = React.useState<PendingConfirm | null>(null)
   const [cancelingScheduledId, setCancelingScheduledId] = React.useState("")
+  const [sendQueueStatus, setSendQueueStatus] = React.useState<SendQueueStatus | "all">("all")
+  const [sendQueueAuditId, setSendQueueAuditId] = React.useState("")
+  const [sendQueuePendingId, setSendQueuePendingId] = React.useState("")
   const [mobileSidebarOpen, setMobileSidebarOpen] = React.useState(false)
   const [labelEditMode, setLabelEditMode] = React.useState(false)
   const [newLabelEditing, setNewLabelEditing] = React.useState(false)
@@ -130,6 +134,9 @@ export function MailPage() {
   const labels = useQuery({ queryKey: ["labels", activeMailboxId], queryFn: () => api.labels(activeMailboxId), enabled: !!activeMailboxId && (canReadMail || canManageLabels) })
   const mailStats = useQuery({ queryKey: ["mail-stats", activeMailboxId], queryFn: () => api.mailStats(activeMailboxId), enabled: !!activeMailboxId && hasPermission(user, "mail.stats.view") })
   const scheduledSends = useQuery({ queryKey: ["scheduled-sends", activeMailboxId], queryFn: () => api.scheduledSends(activeMailboxId), enabled: !!activeMailboxId && canScheduleMail, refetchInterval: 30000 })
+  const canViewSendQueue = canReadMail
+  const sendQueue = useQuery({ queryKey: ["send-queue", activeMailboxId, sendQueueStatus], queryFn: () => api.sendQueue({ mailboxId: activeMailboxId, status: sendQueueStatus }), enabled: !!activeMailboxId && canViewSendQueue, refetchInterval: 15000 })
+  const sendQueueAudit = useQuery({ queryKey: ["send-queue-audit", sendQueueAuditId], queryFn: () => api.sendQueueAudit(sendQueueAuditId), enabled: !!sendQueueAuditId && canViewSendQueue })
   const mailRefreshInterval = publicSettings.data?.mailAutoRefresh ? Math.max(publicSettings.data.mailRefreshMs || 30000, 5000) : false
   const inboxProbe = useQuery({
     queryKey: ["mail-notifications", activeMailboxId],
@@ -148,7 +155,7 @@ export function MailPage() {
     },
     initialPageParam: "",
     getNextPageParam: (lastPage) => lastPage.nextCursor || undefined,
-    enabled: !!activeMailboxId && canReadMail && mailView !== "scheduled" && (mailView !== "label" || !!selectedLabelId),
+    enabled: !!activeMailboxId && canReadMail && mailView !== "scheduled" && mailView !== "sendQueue" && (mailView !== "label" || !!selectedLabelId),
   })
   const detail = useQuery({ queryKey: ["message", selectedId], queryFn: () => api.message(selectedId!, { markRead: false }), enabled: !!selectedId && canReadMail })
   function updateCachedMessage(id: string, patch: Partial<MailMessage>) {
@@ -276,6 +283,28 @@ export function MailPage() {
     onError: (error) => toast({ title: "操作失败", description: error instanceof Error ? error.message : "请稍后重试" }),
     onSettled: () => setCancelingScheduledId(""),
   })
+  const retrySendQueue = useMutation({
+    mutationFn: (item: SendQueueItem) => api.retrySendQueue(item.id),
+    onMutate: (item) => setSendQueuePendingId(item.id),
+    onSuccess: async () => {
+      await qc.invalidateQueries({ queryKey: ["send-queue"] })
+      await qc.invalidateQueries({ queryKey: ["send-queue-audit"] })
+      toast({ title: "已重新加入发送队列" })
+    },
+    onError: (error) => toast({ title: "重试失败", description: error instanceof Error ? error.message : "请稍后重试" }),
+    onSettled: () => setSendQueuePendingId(""),
+  })
+  const cancelSendQueue = useMutation({
+    mutationFn: (item: SendQueueItem) => api.cancelSendQueue(item.id),
+    onMutate: (item) => setSendQueuePendingId(item.id),
+    onSuccess: async () => {
+      await qc.invalidateQueries({ queryKey: ["send-queue"] })
+      await qc.invalidateQueries({ queryKey: ["send-queue-audit"] })
+      toast({ title: "已取消发送任务" })
+    },
+    onError: (error) => toast({ title: "取消失败", description: error instanceof Error ? error.message : "请稍后重试" }),
+    onSettled: () => setSendQueuePendingId(""),
+  })
   const markAllRead = useMutation({
     mutationFn: async (items: MailMessage[]) => {
       const unread = items.filter((message) => !message.isRead)
@@ -403,6 +432,7 @@ export function MailPage() {
         qc.invalidateQueries({ queryKey: ["mail-stats"] }),
         qc.invalidateQueries({ queryKey: ["labels"] }),
         qc.invalidateQueries({ queryKey: ["scheduled-sends"] }),
+        qc.invalidateQueries({ queryKey: ["send-queue"] }),
         qc.invalidateQueries({ queryKey: ["mail-notifications"] }),
       ]).finally(() => {
         setLastAutoRefreshAt(new Date())
@@ -429,10 +459,16 @@ export function MailPage() {
   const visibleScheduledItems = scheduledQuery
     ? scheduledItems.filter((item) => [item.subject, item.snippet, ...(item.to || [])].join(" ").toLowerCase().includes(scheduledQuery))
     : scheduledItems
-  const mailMenuItems = buildMailMenuItems(folders.data?.items || [], starredCount, canScheduleMail ? scheduledCount : 0, canScheduleMail)
+  const sendQueueItems = sendQueue.data?.items || []
+  const sendQueueCount = sendQueueItems.filter((item) => item.status === "failed" || item.status === "queued" || item.status === "sending").length
+  const sendQueueQuery = query.trim().toLowerCase()
+  const visibleSendQueueItems = sendQueueQuery
+    ? sendQueueItems.filter((item) => [item.subject, item.source, item.lastError, item.error, item.failureReason, ...(item.recipients || [])].join(" ").toLowerCase().includes(sendQueueQuery))
+    : sendQueueItems
+  const mailMenuItems = buildMailMenuItems(folders.data?.items || [], starredCount, canScheduleMail ? scheduledCount : 0, canScheduleMail, canViewSendQueue ? sendQueueCount : 0, canViewSendQueue)
   const labelItems = labels.data?.items || []
   const selectedLabel = labelItems.find((item) => item.id === selectedLabelId)
-  const viewTitle = mailView === "scheduled" ? "待发送" : mailView === "starred" ? "星标邮件" : mailView === "label" ? selectedLabel?.name || "标签" : folderLabels[folder] || folder
+  const viewTitle = mailView === "sendQueue" ? "发送队列" : mailView === "scheduled" ? "待发送" : mailView === "starred" ? "星标邮件" : mailView === "label" ? selectedLabel?.name || "标签" : folderLabels[folder] || folder
   const emptyMessage = getEmptyMessage(mailView, folder, allMessages.length)
   const visibleMessageIds = visibleMessages.map((message) => message.id)
   const selectedCountOnPage = compactSelectedIds.filter((id) => visibleMessageIds.includes(id)).length
@@ -453,6 +489,7 @@ export function MailPage() {
       qc.invalidateQueries({ queryKey: ["mail-stats"] }),
       qc.invalidateQueries({ queryKey: ["labels"] }),
       qc.invalidateQueries({ queryKey: ["scheduled-sends"] }),
+      qc.invalidateQueries({ queryKey: ["send-queue"] }),
     ])
   }
   async function runBulkAction(action: BulkAction) {
@@ -576,6 +613,13 @@ export function MailPage() {
     setMailFilter("all")
     setMobileSidebarOpen(false)
   }
+  function openSendQueue() {
+    setMailView("sendQueue")
+    setSelectedLabelId("")
+    setSelectedId(null)
+    setMailFilter("all")
+    setMobileSidebarOpen(false)
+  }
   function openLabel(labelId: string) {
     setSelectedLabelId(labelId)
     setMailView("label")
@@ -654,9 +698,9 @@ export function MailPage() {
               {mailMenuItems.map((item) => (
                 <SidebarMenuItem key={item.key}>
                   <SidebarMenuButton
-                    isActive={item.type === "starred" ? mailView === "starred" : item.type === "scheduled" ? mailView === "scheduled" : mailView === "folder" && folder === item.folderName}
+                    isActive={item.type === "starred" ? mailView === "starred" : item.type === "scheduled" ? mailView === "scheduled" : item.type === "sendQueue" ? mailView === "sendQueue" : mailView === "folder" && folder === item.folderName}
                     className={cn(sidebarCollapsed && "justify-center px-0")}
-                    onClick={() => item.type === "starred" ? openStarred() : item.type === "scheduled" ? openScheduled() : openFolder(item.folderName)}
+                    onClick={() => item.type === "starred" ? openStarred() : item.type === "scheduled" ? openScheduled() : item.type === "sendQueue" ? openSendQueue() : openFolder(item.folderName)}
                   >
                     {item.icon}
                     {!sidebarCollapsed && <span>{item.label}</span>}
@@ -772,6 +816,23 @@ export function MailPage() {
     />
   ) : mailView === "scheduled" ? (
     <PermissionEmptyState title="无定时发送权限" description="当前账号不能查看或管理定时发送任务。" onOpenSettings={openSettings} />
+  ) : mailView === "sendQueue" && canViewSendQueue ? (
+    <SendQueueView
+      compact={isMobile || displayMode === "compact"}
+      items={visibleSendQueueItems}
+      total={sendQueueItems.length}
+      loading={sendQueue.isLoading}
+      query={query}
+      status={sendQueueStatus}
+      pendingId={sendQueuePendingId}
+      onStatusChange={setSendQueueStatus}
+      onRetry={(item) => retrySendQueue.mutate(item)}
+      onCancel={(item) => cancelSendQueue.mutate(item)}
+      onAudit={(item) => setSendQueueAuditId(item.id)}
+      canMutate={canSendMail}
+    />
+  ) : mailView === "sendQueue" ? (
+    <PermissionEmptyState title="无发送队列权限" description="当前账号不能查看发送队列。" onOpenSettings={openSettings} />
   ) : isMobile || displayMode === "compact" ? (
     <CompactMailView
       title={viewTitle}
@@ -900,7 +961,7 @@ export function MailPage() {
                 {canSendMail && <Button type="button" size="icon" onClick={() => openCompose()} disabled={!selectedMailbox} aria-label="写邮件"><PencilLine className="h-4 w-4" /></Button>}
                 <div className="relative basis-full">
                   <Search className="absolute left-3 top-2.5 h-4 w-4 text-muted-foreground" />
-                  <Input value={query} onChange={(e) => setQuery(e.target.value)} placeholder={mailView === "scheduled" ? "搜索待发送" : "搜索邮件"} className="h-10 pl-9" />
+                  <Input value={query} onChange={(e) => setQuery(e.target.value)} placeholder={mailView === "sendQueue" ? "搜索发送队列" : mailView === "scheduled" ? "搜索待发送" : "搜索邮件"} className="h-10 pl-9" />
                 </div>
               </header>
             )}
@@ -924,7 +985,7 @@ export function MailPage() {
                         {autoRefreshing ? "自动刷新中..." : lastAutoRefreshAt ? `已刷新 ${lastAutoRefreshAt.toLocaleTimeString([], { hour: "2-digit", minute: "2-digit" })}` : "自动刷新已开启"}
                       </div>
                     )}
-                    {mailView !== "scheduled" && (
+                    {mailView !== "scheduled" && mailView !== "sendQueue" && (
                       <>
                         {canOrganizeMail && <Button variant="outline" size="sm" disabled={!activeMailboxId || markAllRead.isPending || unreadCount === 0} onClick={() => markAllRead.mutate(allMessages)}><MailCheck className="h-4 w-4" />全部已读</Button>}
                         <DropdownMenu>
@@ -944,7 +1005,7 @@ export function MailPage() {
                   </div>
                   <div className="relative w-full max-w-md">
                     <Search className="absolute left-3 top-2.5 h-4 w-4 text-muted-foreground" />
-                    <Input value={query} onChange={(e) => setQuery(e.target.value)} placeholder={mailView === "scheduled" ? "搜索待发送" : "搜索邮件"} className="pl-9" />
+                    <Input value={query} onChange={(e) => setQuery(e.target.value)} placeholder={mailView === "sendQueue" ? "搜索发送队列" : mailView === "scheduled" ? "搜索待发送" : "搜索邮件"} className="pl-9" />
                   </div>
                 </header>
                 {contentView}
@@ -954,7 +1015,13 @@ export function MailPage() {
         )}
       </SidebarProvider>
 
-      <ComposeDialog mailbox={selectedMailbox} open={composeOpen} draft={composeDraft} limits={user?.limits} canSend={canSendMail} canManageDrafts={canManageDrafts} canSchedule={canScheduleMail} canManageSignatures={canManageSignatures} onOpenChange={(open) => { setComposeOpen(open); if (!open) setComposeDraft(undefined) }} onSent={() => { setComposeOpen(false); setComposeDraft(undefined); qc.invalidateQueries({ queryKey: ["messages"] }); qc.invalidateQueries({ queryKey: ["folders"] }); qc.invalidateQueries({ queryKey: ["mail-stats"] }); qc.invalidateQueries({ queryKey: ["labels"] }); qc.invalidateQueries({ queryKey: ["scheduled-sends"] }) }} />
+      <ComposeDialog mailbox={selectedMailbox} open={composeOpen} draft={composeDraft} limits={user?.limits} canSend={canSendMail} canManageDrafts={canManageDrafts} canSchedule={canScheduleMail} canManageSignatures={canManageSignatures} onOpenChange={(open) => { setComposeOpen(open); if (!open) setComposeDraft(undefined) }} onSent={() => { setComposeOpen(false); setComposeDraft(undefined); qc.invalidateQueries({ queryKey: ["messages"] }); qc.invalidateQueries({ queryKey: ["folders"] }); qc.invalidateQueries({ queryKey: ["mail-stats"] }); qc.invalidateQueries({ queryKey: ["labels"] }); qc.invalidateQueries({ queryKey: ["scheduled-sends"] }); qc.invalidateQueries({ queryKey: ["send-queue"] }) }} />
+      <SendQueueAuditDialog
+        open={!!sendQueueAuditId}
+        loading={sendQueueAudit.isLoading}
+        events={sendQueueAudit.data?.items || []}
+        onOpenChange={(open) => { if (!open) setSendQueueAuditId("") }}
+      />
       <ConfirmDialog
         open={!!pendingConfirm}
         title={pendingConfirm?.title || ""}
@@ -969,7 +1036,7 @@ export function MailPage() {
   )
 }
 
-function buildMailMenuItems(folders: MailFolder[], starredCount: number, scheduledCount: number, includeScheduled: boolean): MailMenuItem[] {
+function buildMailMenuItems(folders: MailFolder[], starredCount: number, scheduledCount: number, includeScheduled: boolean, sendQueueCount: number, includeSendQueue: boolean): MailMenuItem[] {
   const byName = new Map(folders.map((item) => [item.name, item]))
   const normalizedFolders = ["Inbox", "Drafts", "Sent", "Archive", "Spam", "Trash"].map((name) => byName.get(name) || { id: `virtual-${name}`, name, role: name.toLowerCase(), unreadCount: 0, totalCount: 0 })
   for (const item of folders) {
@@ -985,10 +1052,13 @@ function buildMailMenuItems(folders: MailFolder[], starredCount: number, schedul
   }))
   const starredItem: MailMenuItem = { type: "starred", key: "starred", label: "星标邮件", icon: <Star className="h-4 w-4" />, count: starredCount }
   const scheduledItem: MailMenuItem = { type: "scheduled", key: "scheduled", label: "待发送", icon: <Clock3 className="h-4 w-4" />, count: scheduledCount }
+  const sendQueueItem: MailMenuItem = { type: "sendQueue", key: "send-queue", label: "发送队列", icon: <History className="h-4 w-4" />, count: sendQueueCount }
   const inboxIndex = folderItems.findIndex((item) => item.type === "folder" && item.folderName === "Inbox")
   const insertAt = inboxIndex >= 0 ? inboxIndex + 1 : 0
-  if (!includeScheduled) return [...folderItems.slice(0, insertAt), starredItem, ...folderItems.slice(insertAt)]
-  return [...folderItems.slice(0, insertAt), starredItem, scheduledItem, ...folderItems.slice(insertAt)]
+  const specialItems: MailMenuItem[] = [starredItem]
+  if (includeScheduled) specialItems.push(scheduledItem)
+  if (includeSendQueue) specialItems.push(sendQueueItem)
+  return [...folderItems.slice(0, insertAt), ...specialItems, ...folderItems.slice(insertAt)]
 }
 
 function FolderSkeleton() { return <div className="space-y-2 p-2"><Skeleton className="h-8 w-full" /><Skeleton className="h-8 w-4/5" /><Skeleton className="h-8 w-3/4" /></div> }
@@ -996,6 +1066,7 @@ function MessageSkeleton() { return <div className="space-y-0">{Array.from({ len
 
 function getEmptyMessage(mailView: MailView, folder: string, total: number) {
   if (mailView === "scheduled") return total === 0 ? "没有待发送邮件" : "当前搜索没有匹配的定时邮件"
+  if (mailView === "sendQueue") return total === 0 ? "发送队列为空" : "当前搜索没有匹配的发送任务"
   if (total > 0) return "当前筛选条件下没有邮件"
   if (mailView === "starred") return "暂无星标邮件"
   if (mailView === "label") return "当前标签没有邮件"
@@ -1114,6 +1185,180 @@ function ScheduledStatusBadge({ status }: { status: ScheduledSend["status"] }) {
   )
 }
 
+const sendQueueStatusOptions: { value: SendQueueStatus | "all"; label: string }[] = [
+  { value: "all", label: "全部状态" },
+  { value: "queued", label: "排队中" },
+  { value: "sending", label: "发送中" },
+  { value: "failed", label: "发送失败" },
+  { value: "delivered", label: "已投递" },
+  { value: "canceled", label: "已取消" },
+]
+
+function SendQueueView({
+  compact,
+  items,
+  total,
+  loading,
+  query,
+  status,
+  pendingId,
+  onStatusChange,
+  onRetry,
+  onCancel,
+  onAudit,
+  canMutate,
+}: {
+  compact: boolean
+  items: SendQueueItem[]
+  total: number
+  loading: boolean
+  query: string
+  status: SendQueueStatus | "all"
+  pendingId: string
+  onStatusChange: (status: SendQueueStatus | "all") => void
+  onRetry: (item: SendQueueItem) => void
+  onCancel: (item: SendQueueItem) => void
+  onAudit: (item: SendQueueItem) => void
+  canMutate: boolean
+}) {
+  const empty = query.trim() ? "当前搜索没有匹配的发送任务" : "发送队列为空"
+  return (
+    <div className="flex min-h-0 flex-1 flex-col bg-background">
+      <div className={cn("flex shrink-0 items-center justify-between gap-3 border-b", compact ? "min-h-12 px-4 py-2" : "h-14 px-5")}>
+        <div className="min-w-0">
+          <div className="flex items-center gap-2 text-sm font-semibold"><History className="h-4 w-4" />发送队列</div>
+          <div className="text-xs text-muted-foreground">{items.length} / {total} 个发送任务</div>
+        </div>
+        <Select value={status} onValueChange={(value) => onStatusChange(value as SendQueueStatus | "all")}>
+          <SelectTrigger className="h-9 w-[132px]">
+            <SelectValue />
+          </SelectTrigger>
+          <SelectContent>
+            {sendQueueStatusOptions.map((item) => <SelectItem key={item.value} value={item.value}>{item.label}</SelectItem>)}
+          </SelectContent>
+        </Select>
+      </div>
+      <ScrollArea className="min-h-0 flex-1">
+        {loading && <ScheduledSendSkeleton />}
+        {!loading && items.length === 0 && <div className="p-8 text-center text-sm text-muted-foreground">{empty}</div>}
+        {!loading && items.map((item) => (
+          <SendQueueRow
+            key={item.id}
+            item={item}
+            compact={compact}
+            pending={pendingId === item.id}
+            onRetry={() => onRetry(item)}
+            onCancel={() => onCancel(item)}
+            onAudit={() => onAudit(item)}
+            canMutate={canMutate}
+          />
+        ))}
+      </ScrollArea>
+    </div>
+  )
+}
+
+function SendQueueRow({ item, compact, pending, onRetry, onCancel, onAudit, canMutate }: { item: SendQueueItem; compact: boolean; pending: boolean; onRetry: () => void; onCancel: () => void; onAudit: () => void; canMutate: boolean }) {
+  const recipients = item.recipients?.length ? item.recipients.join(", ") : "未记录收件人"
+  const failure = item.lastError || item.error || item.failureReason || ""
+  const canRetry = item.status === "failed"
+  const canCancel = item.status === "queued" || item.status === "failed"
+  return (
+    <div className={cn("border-b transition-colors hover:bg-accent/40", compact ? "p-4" : "px-5 py-4")}>
+      <div className={cn("gap-4", compact ? "space-y-3" : "grid grid-cols-[minmax(0,1fr)_210px_220px] items-center")}>
+        <div className="min-w-0">
+          <div className="mb-1 flex min-w-0 items-center gap-2">
+            <span className="truncate text-sm font-semibold">{item.subject || "(无主题)"}</span>
+            <SendQueueStatusBadge status={item.status} />
+          </div>
+          <div className="truncate text-xs text-muted-foreground">发给 {recipients}</div>
+          <div className="mt-1 flex flex-wrap gap-x-3 gap-y-1 text-xs text-muted-foreground">
+            <span>来源：{sendQueueSourceLabel(item.source)}</span>
+            <span>尝试：{item.attemptCount}/{item.maxAttempts}</span>
+            {item.nextAttemptAt && <span>下次：{formatDateTime(item.nextAttemptAt)}</span>}
+          </div>
+          {failure && <div className="mt-2 line-clamp-2 text-xs text-destructive">{failure}</div>}
+        </div>
+        <div className="space-y-1 text-sm">
+          <div className="text-xs text-muted-foreground">更新时间</div>
+          <div className="font-medium">{formatDateTime(item.updatedAt || item.createdAt)}</div>
+          {item.deliveredAt && <div className="text-xs text-muted-foreground">投递于 {formatDateTime(item.deliveredAt)}</div>}
+        </div>
+        <div className={cn("flex flex-wrap gap-2", compact ? "justify-start" : "justify-end")}>
+          <Button type="button" variant="outline" size="sm" onClick={onAudit}>
+            <History className="h-4 w-4" />时间线
+          </Button>
+          {canMutate && canRetry && (
+            <Button type="button" variant="outline" size="sm" disabled={pending} onClick={onRetry}>
+              <RotateCcw className="h-4 w-4" />{pending ? "处理中..." : "重试"}
+            </Button>
+          )}
+          {canMutate && canCancel && (
+            <Button type="button" variant="destructive" size="sm" disabled={pending} onClick={onCancel}>
+              {pending ? "处理中..." : "取消"}
+            </Button>
+          )}
+        </div>
+      </div>
+    </div>
+  )
+}
+
+function SendQueueStatusBadge({ status }: { status: SendQueueStatus }) {
+  const label = status === "queued" ? "排队中" : status === "sending" ? "发送中" : status === "delivered" ? "已投递" : status === "failed" ? "发送失败" : "已取消"
+  return (
+    <Badge variant={status === "failed" ? "destructive" : status === "sending" || status === "queued" ? "secondary" : "outline"} className="h-5 shrink-0 rounded-md px-1.5 text-[11px] font-normal">
+      {label}
+    </Badge>
+  )
+}
+
+function SendQueueAuditDialog({ open, loading, events, onOpenChange }: { open: boolean; loading: boolean; events: SendQueueAuditEvent[]; onOpenChange: (open: boolean) => void }) {
+  return (
+    <Dialog open={open} onOpenChange={onOpenChange}>
+      <DialogContent className="w-[min(92vw,42rem)] max-w-none">
+        <DialogHeader>
+          <DialogTitle>投递时间线</DialogTitle>
+        </DialogHeader>
+        <div className="max-h-[60vh] overflow-auto pr-1">
+          {loading && <div className="space-y-3">{Array.from({ length: 4 }).map((_, index) => <Skeleton key={index} className="h-14 w-full" />)}</div>}
+          {!loading && events.length === 0 && <div className="rounded-lg border border-dashed p-6 text-center text-sm text-muted-foreground">暂无投递事件</div>}
+          {!loading && events.length > 0 && (
+            <div className="space-y-3">
+              {events.map((event) => (
+                <div key={event.id} className="rounded-lg border p-3">
+                  <div className="flex flex-wrap items-center justify-between gap-2">
+                    <div className="flex items-center gap-2 text-sm font-medium">
+                      {event.status && <SendQueueStatusBadge status={event.status} />}
+                      <span>{event.message || event.event || event.eventType || "队列事件"}</span>
+                    </div>
+                    <span className="text-xs text-muted-foreground">{formatDateTime(event.createdAt)}</span>
+                  </div>
+                  <div className="mt-2 flex flex-wrap gap-x-3 gap-y-1 text-xs text-muted-foreground">
+                    {typeof event.attemptCount === "number" && <span>尝试次数：{event.attemptCount}</span>}
+                    {event.error && <span className="text-destructive">{event.error}</span>}
+                  </div>
+                </div>
+              ))}
+            </div>
+          )}
+        </div>
+        <DialogFooter>
+          <Button type="button" variant="outline" onClick={() => onOpenChange(false)}>关闭</Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  )
+}
+
+function sendQueueSourceLabel(source: string) {
+  const normalized = source.toLowerCase()
+  if (normalized === "submission") return "SMTP Submission"
+  if (normalized === "webmail") return "Webmail"
+  if (normalized === "scheduled") return "定时发送"
+  return source || "未知"
+}
+
 type BulkAction = "read" | "unread" | "star" | "unstar" | "archive" | "trash" | "spam" | "delete"
 
 function BulkActionMenu({ pending, onAction }: { pending: boolean; onAction: (action: BulkAction) => void }) {
@@ -1718,6 +1963,7 @@ function MessageMetaPanel({ message, availableLabels, onAddLabel, onRemoveLabel,
           <MessageMetaRow label="接收时间">
             <span>{formatDateTime(message.receivedAt)}</span>
           </MessageMetaRow>
+          <AuthenticationResultRow message={message} />
           {availableLabels && onAddLabel && onRemoveLabel && (
             <MessageMetaRow label="标签">
               <div className="flex flex-wrap items-center gap-1.5">
@@ -1779,6 +2025,41 @@ function MessageMetaPanel({ message, availableLabels, onAddLabel, onRemoveLabel,
   )
 }
 
+function AuthenticationResultRow({ message }: { message: MailMessage }) {
+  const auth = message.authentication || { authenticationResults: "", receivedSpf: "", spf: "unknown", dkim: "unknown", dmarc: "unknown" }
+  const title = [auth.authenticationResults, auth.receivedSpf].filter(Boolean).join("\n\n")
+  return (
+    <MessageMetaRow label="Auth">
+      <div className="flex flex-wrap gap-1.5" title={title || undefined}>
+        <AuthStatusBadge label="SPF" value={auth.spf} />
+        <AuthStatusBadge label="DKIM" value={auth.dkim} />
+        <AuthStatusBadge label="DMARC" value={auth.dmarc} />
+      </div>
+    </MessageMetaRow>
+  )
+}
+
+function AuthStatusBadge({ label, value }: { label: string; value?: string }) {
+  const status = normalizeAuthStatus(value)
+  return (
+    <Badge variant="outline" className={cn("rounded-md font-mono text-[11px] font-normal", authStatusClassName(status))}>
+      {label}:{status}
+    </Badge>
+  )
+}
+
+function normalizeAuthStatus(value?: string) {
+  const status = (value || "").trim().toLowerCase()
+  if (["pass", "fail", "softfail", "neutral", "temperror", "permerror", "none"].includes(status)) return status
+  return "unknown"
+}
+
+function authStatusClassName(status: string) {
+  if (status === "pass") return "border-emerald-300 bg-emerald-50 text-emerald-700"
+  if (["fail", "softfail", "permerror"].includes(status)) return "border-red-300 bg-red-50 text-red-700"
+  return "border-slate-300 bg-slate-50 text-slate-600"
+}
+
 function MessageMetaRow({ label, children }: { label: string; children: React.ReactNode }) {
   return (
     <div className="grid gap-1 sm:grid-cols-[5rem_minmax(0,1fr)]">

apps/web/src/pages/profile.tsx

@@ -812,8 +812,14 @@ type RuleCreatePayload = {
   enabled: boolean
 }
 
-const conditionFieldLabels: Record<MailRuleCondition["field"], string> = { from: "发件人地址", to: "收件人地址", subject: "邮件主题", body: "邮件正文" }
-const conditionOperatorLabels: Record<MailRuleCondition["operator"], string> = { contains: "包含", "not-contains": "不包含", equals: "等于", "not-equals": "不等于", "starts-with": "开头是", "ends-with": "结尾是" }
+type RuleConditionField = NonNullable<MailRuleCondition["field"]>
+type RuleConditionOperator = NonNullable<MailRuleCondition["operator"]>
+const conditionFieldLabels: Record<RuleConditionField, string> = { from: "发件人地址", to: "收件人地址", cc: "抄送地址", subject: "邮件主题", body: "邮件正文", attachment: "附件名称", size: "邮件大小", date: "收信日期" }
+const conditionOperatorLabels: Record<RuleConditionOperator, string> = { contains: "包含", "not-contains": "不包含", equals: "等于", "not-equals": "不等于", "starts-with": "开头是", "ends-with": "结尾是", gt: "大于", gte: "大于等于", lt: "小于", lte: "小于等于", before: "早于", after: "晚于", on: "当天" }
+const textConditionOperators: RuleConditionOperator[] = ["contains", "not-contains", "equals", "not-equals", "starts-with", "ends-with"]
+const sizeConditionOperators: RuleConditionOperator[] = ["gt", "gte", "lt", "lte", "equals", "not-equals"]
+const dateConditionOperators: RuleConditionOperator[] = ["before", "after", "on", "equals", "not-equals"]
+const conditionFields = Object.keys(conditionFieldLabels) as RuleConditionField[]
 const ruleActionLabels: Record<MailRuleAction["type"], string> = { archive: "移入归档", trash: "移入回收站", star: "添加星标", "mark-read": "标记已读", label: "添加标签", move: "移动到" }
 
 function RulesSection({ items, mailboxes, labels, open, onOpenChange, onCreate, onDelete, pending }: { items: MailRule[]; mailboxes: Mailbox[]; labels: MailLabel[]; open: boolean; onOpenChange: (open: boolean) => void; onCreate: (payload: RuleCreatePayload) => void; onDelete: (id: string) => void; pending: boolean }) {
@@ -860,7 +866,14 @@ function RuleDialog({ open, onOpenChange, mailboxes, labels, pending, onCreate }
   }, [open, labels])
 
   function updateCondition(index: number, patch: Partial<MailRuleCondition>) {
-    setConditions((items) => items.map((item, i) => i === index ? { ...item, ...patch } : item))
+    setConditions((items) => items.map((item, i) => {
+      if (i !== index) return item
+      const next = { ...item, ...patch }
+      if (patch.field && !conditionOperatorsForField(patch.field).includes(next.operator || "contains")) {
+        next.operator = defaultConditionOperator(patch.field)
+      }
+      return next
+    }))
   }
   function updateAction(index: number, patch: Partial<MailRuleAction>) {
     setActions((items) => items.map((item, i) => i === index ? normalizeDraftAction({ ...item, ...patch }, availableLabels) : item))
@@ -870,7 +883,7 @@ function RuleDialog({ open, onOpenChange, mailboxes, labels, pending, onCreate }
   function removeCondition(index: number) { setConditions((items) => items.length > 1 ? items.filter((_, i) => i !== index) : items) }
   function removeAction(index: number) { setActions((items) => items.length > 1 ? items.filter((_, i) => i !== index) : items) }
 
-  const validConditions = conditions.map((item) => ({ ...item, value: item.value.trim() })).filter((item) => item.value)
+  const validConditions = conditions.map((item) => ({ ...item, value: (item.value || "").trim() })).filter((item) => item.field && item.operator && item.value)
   const validActions = actions.map((item) => normalizeDraftAction(item, availableLabels)).filter((item) => item.type !== "label" || item.value || item.labelId).filter((item) => item.type !== "move" || item.value)
   const canCreate = validConditions.length > 0 && validActions.length > 0 && !pending
 
@@ -902,15 +915,15 @@ function RuleDialog({ open, onOpenChange, mailboxes, labels, pending, onCreate }
               <div className="space-y-3">
                 {conditions.map((condition, index) => (
                   <div key={index} className="grid gap-3 md:grid-cols-[220px_150px_minmax(0,1fr)_auto_auto]">
-                    <Select value={condition.field} onValueChange={(value) => updateCondition(index, { field: value as MailRuleCondition["field"] })}>
+                    <Select value={condition.field || "from"} onValueChange={(value) => updateCondition(index, { field: value as RuleConditionField })}>
                       <SelectTrigger><SelectValue /></SelectTrigger>
-                      <SelectContent>{(Object.keys(conditionFieldLabels) as MailRuleCondition["field"][]).map((value) => <SelectItem key={value} value={value}>{conditionFieldLabels[value]}</SelectItem>)}</SelectContent>
+                      <SelectContent>{conditionFields.map((value) => <SelectItem key={value} value={value}>{conditionFieldLabels[value]}</SelectItem>)}</SelectContent>
                     </Select>
-                    <Select value={condition.operator} onValueChange={(value) => updateCondition(index, { operator: value as MailRuleCondition["operator"] })}>
+                    <Select value={condition.operator || defaultConditionOperator(condition.field)} onValueChange={(value) => updateCondition(index, { operator: value as RuleConditionOperator })}>
                       <SelectTrigger><SelectValue /></SelectTrigger>
-                      <SelectContent>{(Object.keys(conditionOperatorLabels) as MailRuleCondition["operator"][]).map((value) => <SelectItem key={value} value={value}>{conditionOperatorLabels[value]}</SelectItem>)}</SelectContent>
+                      <SelectContent>{conditionOperatorsForField(condition.field).map((value) => <SelectItem key={value} value={value}>{conditionOperatorLabels[value]}</SelectItem>)}</SelectContent>
                     </Select>
-                    <Input value={condition.value} onChange={(event) => updateCondition(index, { value: event.target.value })} placeholder="输入值" />
+                    <Input type={condition.field === "date" ? "date" : "text"} value={condition.value || ""} onChange={(event) => updateCondition(index, { value: event.target.value })} placeholder={conditionPlaceholder(condition.field)} />
                     <Button type="button" variant="ghost" size="icon" className="text-muted-foreground" onClick={() => removeCondition(index)} disabled={conditions.length === 1}><X className="h-4 w-4" /></Button>
                     <Button type="button" variant="ghost" size="icon" onClick={addCondition}><Plus className="h-4 w-4" /></Button>
                   </div>
@@ -1012,9 +1025,38 @@ function normalizeDraftAction(action: MailRuleAction, labels: MailLabel[]): Mail
   return { type: action.type }
 }
 
+function conditionOperatorsForField(field?: MailRuleCondition["field"]) {
+  if (field === "size") return sizeConditionOperators
+  if (field === "date") return dateConditionOperators
+  return textConditionOperators
+}
+
+function defaultConditionOperator(field?: MailRuleCondition["field"]): RuleConditionOperator {
+  if (field === "size") return "gte"
+  if (field === "date") return "on"
+  return "contains"
+}
+
+function conditionPlaceholder(field?: MailRuleCondition["field"]) {
+  if (field === "size") return "例如 10mb"
+  if (field === "date") return "选择日期"
+  if (field === "attachment") return "输入附件名或扩展名"
+  return "输入值"
+}
+
 function conditionSummary(conditions: MailRuleCondition[] = [], fromContains = "", subjectContains = "") {
   const items = conditions.length > 0 ? conditions : [fromContains ? { field: "from", operator: "contains", value: fromContains } as MailRuleCondition : undefined, subjectContains ? { field: "subject", operator: "contains", value: subjectContains } as MailRuleCondition : undefined].filter(Boolean) as MailRuleCondition[]
-  return items.map((item) => `${conditionFieldLabels[item.field]} ${conditionOperatorLabels[item.operator]} ${item.value}`).join("；") || "无条件"
+  return items.map(conditionItemSummary).join("；") || "无条件"
+}
+
+function conditionItemSummary(item: MailRuleCondition): string {
+  if (item.conditions?.length) {
+    const mode = item.matchMode === "any" ? "任一" : "全部"
+    return `${mode}(${item.conditions.map(conditionItemSummary).join("；")})`
+  }
+  const field = item.field || "from"
+  const operator = item.operator || defaultConditionOperator(field)
+  return `${conditionFieldLabels[field]} ${conditionOperatorLabels[operator]} ${item.value || ""}`
 }
 
 function actionSummary(action: MailRuleAction) {
@@ -1063,7 +1105,8 @@ function StatsSection({ stats, mailbox, onRefresh }: { stats?: MailStats; mailbo
 }
 
 function StatsSummary({ stats }: { stats?: MailStats }) {
-  const cards = [{ label: "总邮件", value: stats?.totalMessages || 0 }, { label: "未读", value: stats?.unreadMessages || 0 }, { label: "星标", value: stats?.starredMessages || 0 }, { label: "附件", value: stats?.attachmentCount || 0 }, { label: "容量", value: formatBytes(stats?.storageBytes || 0) }]
+  const quotaLabel = stats?.quotaBytes ? `${formatBytes(stats.storageBytes || 0)} / ${formatBytes(stats.quotaBytes)}` : formatBytes(stats?.storageBytes || 0)
+  const cards = [{ label: "总邮件", value: stats?.totalMessages || 0 }, { label: "未读", value: stats?.unreadMessages || 0 }, { label: "星标", value: stats?.starredMessages || 0 }, { label: "附件", value: `${stats?.attachmentCount || 0} / ${formatBytes(stats?.attachmentBytes || 0)}` }, { label: stats?.quotaBytes ? `容量 ${Math.min(stats.quotaUsedPct || 0, 999).toFixed(1)}%` : "容量", value: quotaLabel }]
   return <div className="grid gap-3 sm:grid-cols-2 xl:grid-cols-5">{cards.map((c) => <Card key={c.label}><CardContent className="p-4"><div className="text-2xl font-semibold tracking-tight">{c.value}</div><div className="text-xs text-muted-foreground">{c.label}</div></CardContent></Card>)}</div>
 }
 

deploy/dovecot/dovecot.conf

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