feat(mailbox): 支持用户自助申请邮箱

- 后端新增邮箱申请配置与接口，限制可申请域名并校验保留前缀。
- 管理后台系统设置增加自助申请邮箱开关、开放域名和禁止前缀配置。
- 个人中心新增申请邮箱入口，并在邮箱页优化当前邮箱切换与空列表处理。
- 补充相关测试与环境变量示例配置。

apps/api/internal/app/app.go

@@ -627,6 +627,14 @@ func defaultFolderDefs() []struct{ name, role string } {
 }
 
 func (a *App) createMailbox(ctx context.Context, userID, domainID, localPart, displayName, password string, quotaMB int, status string) (string, error) {
+	passwordHash, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
+	if err != nil {
+		return "", err
+	}
+	return a.createMailboxWithPasswordHash(ctx, userID, domainID, localPart, displayName, string(passwordHash), quotaMB, status)
+}
+
+func (a *App) createMailboxWithPasswordHash(ctx context.Context, userID, domainID, localPart, displayName, passwordHash string, quotaMB int, status string) (string, error) {
 	localPart = normalizeLocalPart(localPart)
 	if localPart == "" {
 		return "", errors.New("invalid local part")
@@ -642,10 +650,6 @@ func (a *App) createMailbox(ctx context.Context, userID, domainID, localPart, di
 		return "", err
 	}
 	address := localPart + "@" + domain
-	passwordHash, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
-	if err != nil {
-		return "", err
-	}
 	if displayName == "" {
 		displayName = address
 	}
@@ -659,7 +663,7 @@ func (a *App) createMailbox(ctx context.Context, userID, domainID, localPart, di
 	id := newID("mbx")
 	now := a.now().UTC().Format(time.RFC3339Nano)
 	_, err = tx.ExecContext(ctx, `INSERT INTO mailboxes(id,user_id,domain_id,local_part,address,display_name,password_hash,quota_mb,status,created_at,updated_at)
-		VALUES(?,?,?,?,?,?,?,?,?,?,?)`, id, userID, domainID, localPart, address, displayName, string(passwordHash), quotaMB, status, now, now)
+		VALUES(?,?,?,?,?,?,?,?,?,?,?)`, id, userID, domainID, localPart, address, displayName, passwordHash, quotaMB, status, now, now)
 	if err != nil {
 		return "", err
 	}

apps/api/internal/app/app_test.go

@@ -170,6 +170,33 @@ func createTestMailbox(t *testing.T, admin *testClient, domainID, localPart, dis
 	return mailbox
 }
 
+func systemSettingsPayload(settings SystemSettings) map[string]any {
+	return map[string]any{
+		"publicHostname":          settings.PublicHostname,
+		"publicBaseUrl":           settings.PublicBaseURL,
+		"smtpHost":                settings.SMTPHost,
+		"smtpPort":                settings.SMTPPort,
+		"smtpUsername":            settings.SMTPUsername,
+		"smtpPassword":            "",
+		"smtpRequireTls":          settings.SMTPRequireTLS,
+		"maildirRoot":             settings.MaildirRoot,
+		"maildirScanSeconds":      settings.MaildirScanSeconds,
+		"sessionTtlHours":         settings.SessionTTLHours,
+		"allowInsecureHttp":       settings.AllowInsecureHTTP,
+		"openRegistration":        settings.OpenRegistration,
+		"twoFactorEnabled":        settings.TwoFactorEnabled,
+		"turnstileEnabled":        settings.TurnstileEnabled,
+		"turnstileSiteKey":        settings.TurnstileSiteKey,
+		"turnstileSecretKey":      "",
+		"catchAllEnabled":         settings.CatchAllEnabled,
+		"mailAutoRefresh":         settings.MailAutoRefresh,
+		"mailRefreshSeconds":      settings.MailRefreshSeconds,
+		"userMailboxApplyEnabled": settings.UserMailboxApplyEnabled,
+		"userMailboxDomainIds":    settings.UserMailboxDomainIDs,
+		"reservedMailboxPrefixes": settings.ReservedMailboxPrefixes,
+	}
+}
+
 func TestAuthAdminAndLocalDeliveryFlow(t *testing.T) {
 	a := newTestApp(t)
 	ts := httptest.NewServer(a.Router())
@@ -305,6 +332,70 @@ func TestOpenRegistrationCreatesLoginUserOnly(t *testing.T) {
 	}
 }
 
+func TestUserMailboxApplicationUsesAllowedDomainsAndReservedPrefixes(t *testing.T) {
+	a := newTestApp(t)
+	ts := httptest.NewServer(a.Router())
+	defer ts.Close()
+	admin := &testClient{t: t, server: ts}
+
+	var login map[string]any
+	if code := admin.do("POST", "/api/auth/login", map[string]string{"email": "admin@lanqin.local", "password": "ChangeMe123!"}, &login); code != http.StatusOK {
+		t.Fatalf("admin login code=%d body=%v", code, login)
+	}
+	allowedDomain := createTestDomain(t, admin, "a.com")
+	blockedDomain := createTestDomain(t, admin, "b.com")
+
+	var created AdminUser
+	if code := admin.do("POST", "/api/admin/users", map[string]any{"email": "person@example.net", "displayName": "Person", "role": "user", "password": "Password123!", "disabled": false}, &created); code != http.StatusCreated {
+		t.Fatalf("create user code=%d user=%+v", code, created)
+	}
+
+	userClient := &testClient{t: t, server: ts}
+	if code := userClient.do("POST", "/api/auth/login", map[string]string{"email": "person@example.net", "password": "Password123!"}, &login); code != http.StatusOK {
+		t.Fatalf("user login code=%d", code)
+	}
+	var options MailboxApplyOptions
+	if code := userClient.do("GET", "/api/me/mailbox-apply-options", nil, &options); code != http.StatusOK || options.Enabled || len(options.Domains) != 0 {
+		t.Fatalf("disabled options code=%d options=%+v", code, options)
+	}
+
+	var settings SystemSettings
+	if code := admin.do("GET", "/api/admin/settings", nil, &settings); code != http.StatusOK {
+		t.Fatalf("get settings code=%d", code)
+	}
+	update := systemSettingsPayload(settings)
+	update["userMailboxApplyEnabled"] = true
+	update["userMailboxDomainIds"] = []string{allowedDomain.ID}
+	update["reservedMailboxPrefixes"] = "admin\nroot"
+	if code := admin.do("POST", "/api/admin/settings", update, &settings); code != http.StatusOK || !settings.UserMailboxApplyEnabled || len(settings.UserMailboxDomainIDs) != 1 {
+		t.Fatalf("enable apply code=%d settings=%+v", code, settings)
+	}
+
+	if code := userClient.do("GET", "/api/me/mailbox-apply-options", nil, &options); code != http.StatusOK || !options.Enabled || len(options.Domains) != 1 || options.Domains[0].ID != allowedDomain.ID {
+		t.Fatalf("enabled options code=%d options=%+v", code, options)
+	}
+	var errBody map[string]any
+	if code := userClient.do("POST", "/api/me/mailboxes/apply", map[string]string{"domainId": allowedDomain.ID, "localPart": "admin"}, &errBody); code != http.StatusForbidden {
+		t.Fatalf("reserved prefix code=%d body=%v", code, errBody)
+	}
+	if code := userClient.do("POST", "/api/me/mailboxes/apply", map[string]string{"domainId": blockedDomain.ID, "localPart": "alice"}, &errBody); code != http.StatusForbidden {
+		t.Fatalf("blocked domain code=%d body=%v", code, errBody)
+	}
+	var mailbox Mailbox
+	if code := userClient.do("POST", "/api/me/mailboxes/apply", map[string]string{"domainId": allowedDomain.ID, "localPart": "alice", "displayName": "Alice"}, &mailbox); code != http.StatusCreated || mailbox.Address != "alice@a.com" || mailbox.UserID != created.ID {
+		t.Fatalf("apply mailbox code=%d mailbox=%+v", code, mailbox)
+	}
+	var mine struct {
+		Items []Mailbox `json:"items"`
+	}
+	if code := userClient.do("GET", "/api/mail/mailboxes", nil, &mine); code != http.StatusOK || len(mine.Items) != 1 || mine.Items[0].Address != "alice@a.com" {
+		t.Fatalf("mine code=%d items=%+v", code, mine.Items)
+	}
+	if code := userClient.do("POST", "/api/me/mailboxes/apply", map[string]string{"domainId": allowedDomain.ID, "localPart": "alice"}, &errBody); code != http.StatusConflict {
+		t.Fatalf("duplicate apply code=%d body=%v", code, errBody)
+	}
+}
+
 func TestUserCanSelectMultipleMailboxes(t *testing.T) {
 	a := newTestApp(t)
 	ts := httptest.NewServer(a.Router())

apps/api/internal/app/config.go

@@ -33,6 +33,9 @@ type Config struct {
 	CatchAllEnabled         bool
 	MailAutoRefresh         bool
 	MailRefreshSeconds      int
+	UserMailboxApplyEnabled bool
+	UserMailboxDomainIDs    string
+	ReservedMailboxPrefixes string
 }
 
 func LoadConfig() Config {
@@ -63,6 +66,9 @@ func LoadConfig() Config {
 		CatchAllEnabled:         getenvBool("LANQIN_CATCH_ALL_ENABLED", false),
 		MailAutoRefresh:         getenvBool("LANQIN_MAIL_AUTO_REFRESH", true),
 		MailRefreshSeconds:      getenvInt("LANQIN_MAIL_REFRESH_SECONDS", 30),
+		UserMailboxApplyEnabled: getenvBool("LANQIN_USER_MAILBOX_APPLY_ENABLED", false),
+		UserMailboxDomainIDs:    getenv("LANQIN_USER_MAILBOX_DOMAIN_IDS", ""),
+		ReservedMailboxPrefixes: getenv("LANQIN_RESERVED_MAILBOX_PREFIXES", "admin,postmaster,abuse,hostmaster,webmaster,root,security,noreply,no-reply,mailer-daemon"),
 	}
 }
 

apps/api/internal/app/personal_handlers.go

@@ -12,6 +12,146 @@ import (
 	"github.com/go-chi/chi/v5"
 )
 
+type MailboxApplyOptions struct {
+	Enabled          bool     `json:"enabled"`
+	Domains          []Domain `json:"domains"`
+	ReservedPrefixes []string `json:"reservedPrefixes,omitempty"`
+}
+
+func (a *App) handleMailboxApplyOptions(w http.ResponseWriter, r *http.Request) {
+	domains, err := a.mailboxApplyDomains(r.Context())
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load domains")
+		return
+	}
+	respondJSON(w, http.StatusOK, MailboxApplyOptions{
+		Enabled:          a.cfg.UserMailboxApplyEnabled,
+		Domains:          domains,
+		ReservedPrefixes: parseReservedPrefixes(a.cfg.ReservedMailboxPrefixes),
+	})
+}
+
+func (a *App) handleApplyMailbox(w http.ResponseWriter, r *http.Request) {
+	if !a.cfg.UserMailboxApplyEnabled {
+		respondError(w, http.StatusForbidden, "mailbox application is disabled")
+		return
+	}
+	user := currentUser(r)
+	var req struct {
+		DomainID    string `json:"domainId"`
+		LocalPart   string `json:"localPart"`
+		DisplayName string `json:"displayName"`
+	}
+	if err := decodeJSON(r, &req); err != nil {
+		badRequest(w, err)
+		return
+	}
+	domainID := strings.TrimSpace(req.DomainID)
+	if domainID == "" {
+		badRequest(w, errors.New("domainId is required"))
+		return
+	}
+	allowed, err := a.mailboxApplyDomainAllowed(r.Context(), domainID)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to check domain")
+		return
+	}
+	if !allowed {
+		respondError(w, http.StatusForbidden, "domain is not available")
+		return
+	}
+
+	localPart := normalizeLocalPart(req.LocalPart)
+	if localPart == "" {
+		badRequest(w, errors.New("localPart is required"))
+		return
+	}
+	if len(localPart) > 64 {
+		badRequest(w, errors.New("localPart is too long"))
+		return
+	}
+	reserved := map[string]bool{}
+	for _, item := range parseReservedPrefixes(a.cfg.ReservedMailboxPrefixes) {
+		reserved[item] = true
+	}
+	if reserved[localPart] {
+		respondError(w, http.StatusForbidden, "localPart is reserved")
+		return
+	}
+	var exists int
+	if err := a.db.QueryRowContext(r.Context(), `SELECT COUNT(*) FROM mailboxes WHERE domain_id=? AND local_part=?`, domainID, localPart).Scan(&exists); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to check mailbox")
+		return
+	}
+	if exists > 0 {
+		respondError(w, http.StatusConflict, "mailbox already exists")
+		return
+	}
+
+	var passwordHash string
+	if err := a.db.QueryRowContext(r.Context(), `SELECT password_hash FROM users WHERE id=? AND disabled=0`, user.ID).Scan(&passwordHash); err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load user")
+		return
+	}
+	displayName := strings.TrimSpace(req.DisplayName)
+	if len([]rune(displayName)) > 80 {
+		badRequest(w, errors.New("displayName must be at most 80 characters"))
+		return
+	}
+	mailboxID, err := a.createMailboxWithPasswordHash(r.Context(), user.ID, domainID, localPart, displayName, passwordHash, 1024, "active")
+	if err != nil {
+		if strings.Contains(strings.ToLower(err.Error()), "unique") {
+			respondError(w, http.StatusConflict, "mailbox already exists")
+			return
+		}
+		badRequest(w, err)
+		return
+	}
+	mailbox, err := a.mailboxByID(r.Context(), mailboxID)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "failed to load mailbox")
+		return
+	}
+	respondJSON(w, http.StatusCreated, mailbox)
+}
+
+func (a *App) mailboxApplyDomains(ctx context.Context) ([]Domain, error) {
+	if !a.cfg.UserMailboxApplyEnabled {
+		return []Domain{}, nil
+	}
+	ids := cleanIDList(strings.Split(a.cfg.UserMailboxDomainIDs, ","))
+	if len(ids) == 0 {
+		return []Domain{}, nil
+	}
+	items := make([]Domain, 0, len(ids))
+	for _, id := range ids {
+		domain, err := a.domainByID(ctx, id)
+		if errors.Is(err, sql.ErrNoRows) {
+			continue
+		}
+		if err != nil {
+			return nil, err
+		}
+		if domain.Status == "active" {
+			items = append(items, *domain)
+		}
+	}
+	return items, nil
+}
+
+func (a *App) mailboxApplyDomainAllowed(ctx context.Context, domainID string) (bool, error) {
+	domains, err := a.mailboxApplyDomains(ctx)
+	if err != nil {
+		return false, err
+	}
+	for _, domain := range domains {
+		if domain.ID == domainID {
+			return true, nil
+		}
+	}
+	return false, nil
+}
+
 func (a *App) handleListContacts(w http.ResponseWriter, r *http.Request) {
 	user := currentUser(r)
 	rows, err := a.db.QueryContext(r.Context(), `SELECT id,user_id,name,email,note,created_at FROM contacts WHERE user_id=? ORDER BY name,email`, user.ID)

apps/api/internal/app/router_auth.go

@@ -37,6 +37,8 @@ func (a *App) Router() http.Handler {
 		r.With(a.requireAuth).Get("/me", a.handleMe)
 		r.With(a.requireAuth).Post("/me/profile", a.handleUpdateProfile)
 		r.With(a.requireAuth).Post("/me/password", a.handleChangePassword)
+		r.With(a.requireAuth).Get("/me/mailbox-apply-options", a.handleMailboxApplyOptions)
+		r.With(a.requireAuth).Post("/me/mailboxes/apply", a.handleApplyMailbox)
 		r.With(a.requireAuth).Post("/me/2fa/setup", a.handleTwoFactorSetup)
 		r.With(a.requireAuth).Post("/me/2fa/enable", a.handleTwoFactorEnable)
 		r.With(a.requireAuth).Post("/me/2fa/disable", a.handleTwoFactorDisable)

apps/api/internal/app/settings_handlers.go

@@ -29,6 +29,9 @@ type SystemSettings struct {
 	CatchAllEnabled         bool     `json:"catchAllEnabled"`
 	MailAutoRefresh         bool     `json:"mailAutoRefresh"`
 	MailRefreshSeconds      int      `json:"mailRefreshSeconds"`
+	UserMailboxApplyEnabled bool     `json:"userMailboxApplyEnabled"`
+	UserMailboxDomainIDs    []string `json:"userMailboxDomainIds"`
+	ReservedMailboxPrefixes string   `json:"reservedMailboxPrefixes"`
 }
 
 type systemSettingsUpdate struct {
@@ -51,6 +54,9 @@ type systemSettingsUpdate struct {
 	CatchAllEnabled         bool     `json:"catchAllEnabled"`
 	MailAutoRefresh         bool     `json:"mailAutoRefresh"`
 	MailRefreshSeconds      int      `json:"mailRefreshSeconds"`
+	UserMailboxApplyEnabled bool     `json:"userMailboxApplyEnabled"`
+	UserMailboxDomainIDs    []string `json:"userMailboxDomainIds"`
+	ReservedMailboxPrefixes string   `json:"reservedMailboxPrefixes"`
 }
 
 type PublicSettings struct {
@@ -132,6 +138,9 @@ func (a *App) handleUpdateSystemSettings(w http.ResponseWriter, r *http.Request)
 		req.MailRefreshSeconds = 30
 	}
 	next.MailRefreshSeconds = req.MailRefreshSeconds
+	next.UserMailboxApplyEnabled = req.UserMailboxApplyEnabled
+	next.UserMailboxDomainIDs = strings.Join(cleanIDList(req.UserMailboxDomainIDs), ",")
+	next.ReservedMailboxPrefixes = strings.Join(parseReservedPrefixes(req.ReservedMailboxPrefixes), ",")
 
 	if err := a.saveSystemSettings(r.Context(), next); err != nil {
 		respondError(w, http.StatusInternalServerError, "failed to save settings")
@@ -234,6 +243,9 @@ func (a *App) systemSettingsSnapshot() SystemSettings {
 		CatchAllEnabled:         a.cfg.CatchAllEnabled,
 		MailAutoRefresh:         a.cfg.MailAutoRefresh,
 		MailRefreshSeconds:      a.cfg.MailRefreshSeconds,
+		UserMailboxApplyEnabled: a.cfg.UserMailboxApplyEnabled,
+		UserMailboxDomainIDs:    cleanIDList(strings.Split(a.cfg.UserMailboxDomainIDs, ",")),
+		ReservedMailboxPrefixes: strings.Join(parseReservedPrefixes(a.cfg.ReservedMailboxPrefixes), "\n"),
 	}
 }
 
@@ -293,6 +305,12 @@ func (a *App) loadPersistedSystemSettings(ctx context.Context) error {
 			if n, err := strconv.Atoi(value); err == nil && n > 0 {
 				a.cfg.MailRefreshSeconds = n
 			}
+		case "userMailboxApplyEnabled":
+			a.cfg.UserMailboxApplyEnabled = value == "true"
+		case "userMailboxDomainIds":
+			a.cfg.UserMailboxDomainIDs = value
+		case "reservedMailboxPrefixes":
+			a.cfg.ReservedMailboxPrefixes = value
 		}
 	}
 	return rows.Err()
@@ -319,6 +337,9 @@ func (a *App) saveSystemSettings(ctx context.Context, cfg Config) error {
 		"catchAllEnabled":         strconv.FormatBool(cfg.CatchAllEnabled),
 		"mailAutoRefresh":         strconv.FormatBool(cfg.MailAutoRefresh),
 		"mailRefreshSeconds":      strconv.Itoa(cfg.MailRefreshSeconds),
+		"userMailboxApplyEnabled": strconv.FormatBool(cfg.UserMailboxApplyEnabled),
+		"userMailboxDomainIds":    strings.Join(cleanIDList(strings.Split(cfg.UserMailboxDomainIDs, ",")), ","),
+		"reservedMailboxPrefixes": strings.Join(parseReservedPrefixes(cfg.ReservedMailboxPrefixes), ","),
 	}
 	now := a.now().UTC().Format(time.RFC3339Nano)
 	tx, err := a.db.BeginTx(ctx, nil)
@@ -335,6 +356,35 @@ func (a *App) saveSystemSettings(ctx context.Context, cfg Config) error {
 	return tx.Commit()
 }
 
+func cleanIDList(items []string) []string {
+	seen := map[string]bool{}
+	out := []string{}
+	for _, item := range items {
+		item = strings.TrimSpace(item)
+		if item == "" || seen[item] {
+			continue
+		}
+		seen[item] = true
+		out = append(out, item)
+	}
+	return out
+}
+
+func parseReservedPrefixes(value string) []string {
+	value = strings.NewReplacer("\r", "\n", ",", "\n", ";", "\n", "，", "\n", "；", "\n").Replace(value)
+	seen := map[string]bool{}
+	out := []string{}
+	for _, item := range strings.Split(value, "\n") {
+		item = normalizeLocalPart(item)
+		if item == "" || seen[item] {
+			continue
+		}
+		seen[item] = true
+		out = append(out, item)
+	}
+	return out
+}
+
 func normalizeHostname(value string) string {
 	value = strings.ToLower(strings.TrimSpace(value))
 	value = strings.TrimSuffix(value, ".")

apps/web/src/lib/api.ts

@@ -22,6 +22,7 @@ export type MailRule = { id: string; mailboxId: string; name: string; matchMode:
 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 MailTemplate = { key: string; name: string; subject: string; bodyText: string; bodyHtml: string; updatedAt: string }
+export type MailboxApplyOptions = { enabled: boolean; domains: Domain[]; reservedPrefixes?: string[] }
 export type SystemSettings = {
   publicHostname: string
   publicBaseUrl: string
@@ -42,6 +43,9 @@ export type SystemSettings = {
   catchAllEnabled: boolean
   mailAutoRefresh: boolean
   mailRefreshSeconds: number
+  userMailboxApplyEnabled: boolean
+  userMailboxDomainIds: string[]
+  reservedMailboxPrefixes: string
 }
 export type SystemSettingsPayload = Omit<SystemSettings, "smtpPasswordSet" | "turnstileSecretSet"> & { smtpPassword: string; turnstileSecretKey: string }
 export type PublicSettings = { openRegistration: boolean; turnstileEnabled: boolean; turnstileSiteKey: string; mailAutoRefresh: boolean; mailRefreshMs: number }
@@ -99,6 +103,8 @@ export const api = {
   deleteBlockedSender: (id: string) => request<{ ok: boolean }>(`/api/me/blocked-senders/${id}`, { method: "DELETE" }),
   mailStats: (mailboxId?: string) => request<MailStats>(`/api/me/stats${mailboxId ? `?mailboxId=${encodeURIComponent(mailboxId)}` : ""}`),
   cleanupMail: (payload: { mailboxId: string; target: "empty-trash" | "empty-spam" | "archive-read-inbox" }) => request<{ ok: boolean; affected: number }>("/api/me/cleanup", { method: "POST", body: JSON.stringify(payload) }),
+  mailboxApplyOptions: () => request<MailboxApplyOptions>("/api/me/mailbox-apply-options"),
+  applyMailbox: (payload: { domainId: string; localPart: string; displayName: string }) => request<Mailbox>("/api/me/mailboxes/apply", { method: "POST", body: JSON.stringify(payload) }),
   adminOverview: () => request<AdminOverview>("/api/admin/overview"),
   users: () => request<ListResponse<AdminUser>>("/api/admin/users"),
   createUser: (payload: { email: string; displayName: string; role: "admin" | "user"; password: string; disabled: boolean }) => request<AdminUser>("/api/admin/users", { method: "POST", body: JSON.stringify(payload) }),

apps/web/src/pages/admin.tsx

@@ -4,12 +4,13 @@ import { useSearchParams } from "react-router-dom"
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query"
 import { CheckCircle2, Copy, Globe2, Mailbox, MoreHorizontal, Plus, RefreshCcw, Search, ShieldCheck, Trash2, Users } from "lucide-react"
 import { api, AdminUser, Alias, DNSRecord, Domain, Mailbox as MailboxType, MailMessage, MailTemplate, SystemSettings } from "@/lib/api"
-import { formatBytes, formatDate } from "@/lib/utils"
+import { cn, formatBytes, formatDate } from "@/lib/utils"
 import { Button } from "@/components/ui/button"
 import { Input } from "@/components/ui/input"
 import { Label } from "@/components/ui/label"
 import { Badge } from "@/components/ui/badge"
 import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card"
+import { Checkbox } from "@/components/ui/checkbox"
 import { Dialog, DialogContent, DialogFooter, DialogHeader, DialogTitle, DialogTrigger } from "@/components/ui/dialog"
 import { DropdownMenu, DropdownMenuContent, DropdownMenuItem, DropdownMenuSeparator, DropdownMenuTrigger } from "@/components/ui/dropdown-menu"
 import { ScrollArea } from "@/components/ui/scroll-area"
@@ -79,7 +80,7 @@ export function AdminPage() {
         {section === "mailboxes" && <MailboxesSection mailboxes={mailboxItems} users={userItems} />}
         {section === "aliases" && <AliasesSection aliases={aliasItems} domains={domainItems} />}
         {section === "messages" && <AdminMessagesSection mailboxes={mailboxItems} />}
-        {section === "settings" && <SystemSettingsSection settings={settings.data} />}
+        {section === "settings" && <SystemSettingsSection settings={settings.data} domains={domainItems} />}
       </main>
     </ScrollArea>
   )
@@ -371,7 +372,7 @@ function AdminMessagesSection({ mailboxes }: { mailboxes: MailboxType[] }) {
   )
 }
 
-function SystemSettingsSection({ settings }: { settings?: SystemSettings }) {
+function SystemSettingsSection({ settings, domains }: { settings?: SystemSettings; domains: Domain[] }) {
   const qc = useQueryClient()
   const { toast } = useToast()
   const templates = useQuery({ queryKey: ["admin", "mail-templates"], queryFn: api.mailTemplates })
@@ -383,6 +384,8 @@ function SystemSettingsSection({ settings }: { settings?: SystemSettings }) {
   const [turnstileEnabled, setTurnstileEnabled] = React.useState(false)
   const [catchAllEnabled, setCatchAllEnabled] = React.useState(false)
   const [mailAutoRefresh, setMailAutoRefresh] = React.useState(true)
+  const [userMailboxApplyEnabled, setUserMailboxApplyEnabled] = React.useState(false)
+  const [userMailboxDomainIds, setUserMailboxDomainIds] = React.useState<string[]>([])
   React.useEffect(() => {
     if (!settings) return
     setSmtpRequireTls(settings.smtpRequireTls)
@@ -392,6 +395,8 @@ function SystemSettingsSection({ settings }: { settings?: SystemSettings }) {
     setTurnstileEnabled(settings.turnstileEnabled)
     setCatchAllEnabled(settings.catchAllEnabled)
     setMailAutoRefresh(settings.mailAutoRefresh)
+    setUserMailboxApplyEnabled(settings.userMailboxApplyEnabled)
+    setUserMailboxDomainIds(settings.userMailboxDomainIds || [])
   }, [settings])
   const save = useMutation({
     mutationFn: (form: FormData) => api.updateSystemSettings({
@@ -414,6 +419,9 @@ function SystemSettingsSection({ settings }: { settings?: SystemSettings }) {
       catchAllEnabled,
       mailAutoRefresh,
       mailRefreshSeconds: fieldNumber(form, "mailRefreshSeconds", settings?.mailRefreshSeconds || 30),
+      userMailboxApplyEnabled,
+      userMailboxDomainIds,
+      reservedMailboxPrefixes: fieldValue(form, "reservedMailboxPrefixes", settings?.reservedMailboxPrefixes || ""),
     }),
     onSuccess: () => {
       qc.invalidateQueries({ queryKey: ["admin", "settings"] })
@@ -443,6 +451,9 @@ function SystemSettingsSection({ settings }: { settings?: SystemSettings }) {
     settings.catchAllEnabled,
     settings.mailAutoRefresh,
     settings.mailRefreshSeconds,
+    settings.userMailboxApplyEnabled,
+    (settings.userMailboxDomainIds || []).join(","),
+    settings.reservedMailboxPrefixes,
   ].join("|") : "loading"
   const tabs: { key: typeof settingsTab; label: string }[] = [
     { key: "base", label: "基础" },
@@ -501,6 +512,36 @@ function SystemSettingsSection({ settings }: { settings?: SystemSettings }) {
         <CardContent className="space-y-5">
           <SwitchRow label="无人收件" checked={catchAllEnabled} onCheckedChange={setCatchAllEnabled} />
           <Separator />
+          <SwitchRow label="用户自助申请邮箱" checked={userMailboxApplyEnabled} onCheckedChange={setUserMailboxApplyEnabled} />
+          {userMailboxApplyEnabled && (
+            <div className="space-y-5 border-t pt-5">
+              <div className="space-y-3">
+                <Label>开放域名</Label>
+                <div className="grid gap-2 md:grid-cols-2">
+                  {domains.map((domain) => {
+                    const checked = userMailboxDomainIds.includes(domain.id)
+                    const disabled = domain.status !== "active"
+                    return (
+                      <label key={domain.id} className={cn("flex min-h-11 items-center gap-3 rounded-md border px-3 py-2", disabled && "cursor-not-allowed opacity-50")}>
+                        <Checkbox
+                          checked={checked}
+                          disabled={disabled}
+                          onCheckedChange={(value) => setUserMailboxDomainIds((items) => value === true ? Array.from(new Set([...items, domain.id])) : items.filter((id) => id !== domain.id))}
+                        />
+                        <span className="text-sm font-medium">{domain.name}</span>
+                      </label>
+                    )
+                  })}
+                </div>
+                {domains.length === 0 && <Empty text="暂无域名" />}
+              </div>
+              <div className="space-y-2">
+                <Label>禁止前缀</Label>
+                <Textarea name="reservedMailboxPrefixes" defaultValue={settings?.reservedMailboxPrefixes || ""} className="min-h-28 font-mono text-sm" />
+              </div>
+            </div>
+          )}
+          <Separator />
           <SwitchRow label="自动刷新" checked={mailAutoRefresh} onCheckedChange={setMailAutoRefresh} />
           {mailAutoRefresh && (
             <div className="border-t pt-5">

apps/web/src/pages/mail.tsx

@@ -88,17 +88,18 @@ export function MailPage() {
   const mailboxList = useQuery({ queryKey: ["mailboxes", "mine"], queryFn: api.myMailboxes })
   const publicSettings = useQuery({ queryKey: ["public-settings"], queryFn: api.publicSettings })
   const selectedMailbox = React.useMemo(() => mailboxList.data?.items.find((item) => item.id === selectedMailboxId), [mailboxList.data?.items, selectedMailboxId])
-  const folders = useQuery({ queryKey: ["folders", selectedMailboxId], queryFn: () => api.folders(selectedMailboxId), enabled: !!selectedMailboxId })
-  const labels = useQuery({ queryKey: ["labels", selectedMailboxId], queryFn: () => api.labels(selectedMailboxId), enabled: !!selectedMailboxId })
-  const mailStats = useQuery({ queryKey: ["mail-stats", selectedMailboxId], queryFn: () => api.mailStats(selectedMailboxId), enabled: !!selectedMailboxId })
+  const activeMailboxId = selectedMailbox?.id || ""
+  const folders = useQuery({ queryKey: ["folders", activeMailboxId], queryFn: () => api.folders(activeMailboxId), enabled: !!activeMailboxId })
+  const labels = useQuery({ queryKey: ["labels", activeMailboxId], queryFn: () => api.labels(activeMailboxId), enabled: !!activeMailboxId })
+  const mailStats = useQuery({ queryKey: ["mail-stats", activeMailboxId], queryFn: () => api.mailStats(activeMailboxId), enabled: !!activeMailboxId })
   const messages = useQuery({
-    queryKey: ["messages", selectedMailboxId, mailView, folder, selectedLabelId, query],
+    queryKey: ["messages", activeMailboxId, mailView, folder, selectedLabelId, query],
     queryFn: () => {
-      if (mailView === "starred") return api.starredMessages(query, "", selectedMailboxId)
-      if (mailView === "label") return api.labelMessages(selectedLabelId, query, "", selectedMailboxId)
-      return api.messages(folder, query, "", selectedMailboxId)
+      if (mailView === "starred") return api.starredMessages(query, "", activeMailboxId)
+      if (mailView === "label") return api.labelMessages(selectedLabelId, query, "", activeMailboxId)
+      return api.messages(folder, query, "", activeMailboxId)
     },
-    enabled: !!selectedMailboxId && (mailView !== "label" || !!selectedLabelId),
+    enabled: !!activeMailboxId && (mailView !== "label" || !!selectedLabelId),
   })
   const detail = useQuery({ queryKey: ["message", selectedId], queryFn: () => api.message(selectedId!, { markRead: false }), enabled: !!selectedId })
   function updateCachedMessage(id: string, patch: Partial<MailMessage>) {
@@ -175,15 +176,24 @@ export function MailPage() {
   })
 
   React.useEffect(() => {
+    if (!mailboxList.isSuccess) return
     const items = mailboxList.data?.items || []
-    if (items.length === 0) return
+    if (items.length === 0) {
+      if (selectedMailboxId) {
+        setSelectedMailboxId("")
+        setSelectedId(null)
+      }
+      localStorage.removeItem("lanqin:selected-mailbox")
+      return
+    }
     if (!selectedMailboxId || !items.some((item) => item.id === selectedMailboxId)) {
       setSelectedMailboxId(items[0].id)
     }
-  }, [mailboxList.data?.items, selectedMailboxId])
+  }, [mailboxList.isSuccess, mailboxList.data?.items, selectedMailboxId])
 
   React.useEffect(() => {
     if (selectedMailboxId) localStorage.setItem("lanqin:selected-mailbox", selectedMailboxId)
+    else localStorage.removeItem("lanqin:selected-mailbox")
   }, [selectedMailboxId])
 
   React.useEffect(() => {

apps/web/src/pages/profile.tsx

@@ -4,7 +4,7 @@ import type { ImperativePanelHandle } from "react-resizable-panels"
 import { useNavigate, useSearchParams } from "react-router-dom"
 import { ArrowLeft, BarChart3, Ban, Contact, Copy, Info, KeyRound, LogOut, Mail, MailCheck, MailX, Moon, PanelLeftClose, PanelLeftOpen, Plus, RefreshCcw, Settings, ShieldCheck, SlidersHorizontal, Sun, Trash2, X } from "lucide-react"
 import { QRCodeSVG } from "qrcode.react"
-import { api, MailLabel, MailRule, MailRuleAction, MailRuleCondition, Mailbox, MailStats } from "@/lib/api"
+import { api, MailLabel, MailRule, MailRuleAction, MailRuleCondition, Mailbox, MailboxApplyOptions, MailStats } from "@/lib/api"
 import { cn, formatBytes } from "@/lib/utils"
 import { applyTheme, getInitialTheme } from "@/lib/theme"
 import { DisplayMode, useDisplayMode } from "@/lib/display-mode"
@@ -58,12 +58,14 @@ export function ProfilePage() {
   const tab: Tab = rawTab && tabKeys.includes(rawTab) ? rawTab : "profile"
   const user = me.data?.user
   const mailboxes = useQuery({ queryKey: ["mailboxes", "mine"], queryFn: api.myMailboxes })
+  const mailboxApplyOptions = useQuery({ queryKey: ["mailbox-apply-options"], queryFn: api.mailboxApplyOptions })
   const contacts = useQuery({ queryKey: ["contacts"], queryFn: api.contacts })
   const rules = useQuery({ queryKey: ["rules"], queryFn: api.rules })
   const blocked = useQuery({ queryKey: ["blocked-senders"], queryFn: api.blockedSenders })
-  const ruleLabels = useQuery({ queryKey: ["labels", "rules", mailboxId], queryFn: () => api.labels(mailboxId), enabled: !!mailboxId })
   const selectedMailbox = React.useMemo(() => mailboxes.data?.items.find((m) => m.id === mailboxId), [mailboxes.data?.items, mailboxId])
-  const stats = useQuery({ queryKey: ["mail-stats", mailboxId], queryFn: () => api.mailStats(mailboxId), enabled: !!mailboxId })
+  const activeMailboxId = selectedMailbox?.id || ""
+  const ruleLabels = useQuery({ queryKey: ["labels", "rules", activeMailboxId], queryFn: () => api.labels(activeMailboxId), enabled: !!activeMailboxId })
+  const stats = useQuery({ queryKey: ["mail-stats", activeMailboxId], queryFn: () => api.mailStats(activeMailboxId), enabled: !!activeMailboxId })
 
   const profile = useMutation({
     mutationFn: (form: FormData) => api.updateProfile({ displayName: String(form.get("displayName") || "") }),
@@ -133,12 +135,28 @@ export function ProfilePage() {
     onSuccess: (res) => { qc.invalidateQueries({ queryKey: ["mail-stats"] }); qc.invalidateQueries({ queryKey: ["folders"] }); qc.invalidateQueries({ queryKey: ["messages"] }); toast({ title: `已处理 ${res.affected} 封邮件` }) },
     onError: (error) => toast({ title: "清理失败", description: error.message }),
   })
+  const applyMailbox = useMutation({
+    mutationFn: api.applyMailbox,
+    onSuccess: (mailbox) => {
+      qc.invalidateQueries({ queryKey: ["mailboxes", "mine"] })
+      qc.invalidateQueries({ queryKey: ["mailbox-apply-options"] })
+      setMailboxId(mailbox.id)
+      toast({ title: "邮箱已申请" })
+    },
+    onError: (error) => toast({ title: "申请失败", description: error.message }),
+  })
 
   React.useEffect(() => {
+    if (!mailboxes.isSuccess) return
     const items = mailboxes.data?.items || []
-    if (items.length > 0 && (!mailboxId || !items.some((m) => m.id === mailboxId))) setMailboxId(items[0].id)
-  }, [mailboxId, mailboxes.data?.items])
-  React.useEffect(() => { if (mailboxId) localStorage.setItem("lanqin:selected-mailbox", mailboxId) }, [mailboxId])
+    if (items.length === 0) {
+      if (mailboxId) setMailboxId("")
+      localStorage.removeItem("lanqin:selected-mailbox")
+      return
+    }
+    if (!mailboxId || !items.some((m) => m.id === mailboxId)) setMailboxId(items[0].id)
+  }, [mailboxId, mailboxes.isSuccess, mailboxes.data?.items])
+  React.useEffect(() => { if (mailboxId) localStorage.setItem("lanqin:selected-mailbox", mailboxId); else localStorage.removeItem("lanqin:selected-mailbox") }, [mailboxId])
   React.useEffect(() => { applyTheme(darkMode, themeMountedRef.current); themeMountedRef.current = true }, [darkMode])
 
   async function logout() { await api.logout().catch(() => undefined); qc.clear(); navigate("/login", { replace: true }) }
@@ -190,7 +208,7 @@ export function ProfilePage() {
   )
 
   function renderTab() {
-    if (tab === "mailboxes") return <MailboxManagement mailboxes={mailboxes.data?.items || []} selectedMailboxId={mailboxId} onSelect={setMailboxId} onCopy={copy} onOpen={(id) => { setMailboxId(id); navigate("/") }} />
+    if (tab === "mailboxes") return <MailboxManagement mailboxes={mailboxes.data?.items || []} applyOptions={mailboxApplyOptions.data} applyPending={applyMailbox.isPending} selectedMailboxId={mailboxId} onSelect={setMailboxId} onCopy={copy} onOpen={(id) => { setMailboxId(id); navigate("/") }} onApply={(payload) => applyMailbox.mutateAsync(payload).then(() => undefined)} />
     if (tab === "contacts") return <ContactsSection items={contacts.data?.items || []} loading={contacts.isLoading} pending={createContact.isPending} onCreate={(form) => createContact.mutate(form)} onDelete={(id) => deleteContact.mutate(id)} onCopy={copy} />
     if (tab === "cleanup") return <CleanupSection mailbox={selectedMailbox} stats={stats.data} pending={cleanup.isPending} onCleanup={(target) => cleanup.mutate(target)} />
     if (tab === "rules") return <RulesSection items={rules.data?.items || []} mailboxes={mailboxes.data?.items || []} labels={ruleLabels.data?.items || []} open={ruleDialogOpen} onOpenChange={setRuleDialogOpen} onCreate={(payload) => createRule.mutate(payload)} onDelete={(id) => deleteRule.mutate(id)} pending={createRule.isPending} />
@@ -353,8 +371,65 @@ function ProfileOverview({ user, profile, password, passwordFormRef, stats, disp
   )
 }
 
-function MailboxManagement({ mailboxes, selectedMailboxId, onSelect, onCopy, onOpen }: { mailboxes: Mailbox[]; selectedMailboxId: string; onSelect: (id: string) => void; onCopy: (text: string) => void; onOpen: (id: string) => void }) {
-  return <div className="grid gap-4 md:grid-cols-2 xl:grid-cols-3">{mailboxes.map((m) => <Card key={m.id} className={cn(selectedMailboxId === m.id && "border-primary")}><CardHeader><div className="flex items-start justify-between gap-3"><div className="min-w-0"><CardTitle className="truncate text-base">{m.address}</CardTitle></div>{selectedMailboxId === m.id && <Badge>当前</Badge>}</div></CardHeader><CardContent className="flex flex-wrap gap-2"><Button variant="outline" size="sm" onClick={() => onSelect(m.id)}>设为当前</Button><Button variant="outline" size="sm" onClick={() => onCopy(m.address)}><Copy className="h-4 w-4" />复制</Button><Button size="sm" onClick={() => onOpen(m.id)}>进入邮箱</Button></CardContent></Card>)}{mailboxes.length === 0 && <EmptyState text="暂无邮箱账号" />}</div>
+function MailboxManagement({ mailboxes, applyOptions, applyPending, selectedMailboxId, onSelect, onCopy, onOpen, onApply }: { mailboxes: Mailbox[]; applyOptions?: MailboxApplyOptions; applyPending: boolean; selectedMailboxId: string; onSelect: (id: string) => void; onCopy: (text: string) => void; onOpen: (id: string) => void; onApply: (payload: { domainId: string; localPart: string; displayName: string }) => Promise<void> }) {
+  const canApply = !!applyOptions?.enabled && (applyOptions.domains || []).length > 0
+  return (
+    <div className="space-y-4">
+      <div className="flex justify-end">
+        {canApply && <ApplyMailboxDialog options={applyOptions} pending={applyPending} onApply={onApply} />}
+      </div>
+      <div className="grid gap-4 md:grid-cols-2 xl:grid-cols-3">
+        {mailboxes.map((m) => <Card key={m.id} className={cn(selectedMailboxId === m.id && "border-primary")}><CardHeader><div className="flex items-start justify-between gap-3"><div className="min-w-0"><CardTitle className="truncate text-base">{m.address}</CardTitle></div>{selectedMailboxId === m.id && <Badge>当前</Badge>}</div></CardHeader><CardContent className="flex flex-wrap gap-2"><Button variant="outline" size="sm" onClick={() => onSelect(m.id)}>设为当前</Button><Button variant="outline" size="sm" onClick={() => onCopy(m.address)}><Copy className="h-4 w-4" />复制</Button><Button size="sm" onClick={() => onOpen(m.id)}>进入邮箱</Button></CardContent></Card>)}
+        {mailboxes.length === 0 && <EmptyState text={canApply ? "暂无邮箱账号，点击申请邮箱创建" : "暂无邮箱账号"} />}
+      </div>
+    </div>
+  )
+}
+
+function ApplyMailboxDialog({ options, pending, onApply }: { options: MailboxApplyOptions; pending: boolean; onApply: (payload: { domainId: string; localPart: string; displayName: string }) => Promise<void> }) {
+  const [open, setOpen] = React.useState(false)
+  const [domainId, setDomainId] = React.useState(options.domains[0]?.id || "")
+  React.useEffect(() => {
+    if (!open) return
+    setDomainId((current) => options.domains.some((domain) => domain.id === current) ? current : options.domains[0]?.id || "")
+  }, [open, options.domains])
+
+  async function submit(event: React.FormEvent<HTMLFormElement>) {
+    event.preventDefault()
+    const form = new FormData(event.currentTarget)
+    try {
+      await onApply({
+        domainId,
+        localPart: String(form.get("localPart") || ""),
+        displayName: String(form.get("displayName") || ""),
+      })
+      event.currentTarget.reset()
+      setOpen(false)
+    } catch {}
+  }
+
+  return (
+    <Dialog open={open} onOpenChange={setOpen}>
+      <Button type="button" onClick={() => setOpen(true)}><Plus className="h-4 w-4" />申请邮箱</Button>
+      <DialogContent className="sm:max-w-lg">
+        <DialogHeader><DialogTitle>申请邮箱</DialogTitle></DialogHeader>
+        <form className="space-y-4" onSubmit={submit}>
+          <Field label="邮箱前缀"><Input name="localPart" autoFocus required placeholder="your-name" /></Field>
+          <Field label="域名后缀">
+            <Select value={domainId} onValueChange={setDomainId}>
+              <SelectTrigger><SelectValue placeholder="选择域名" /></SelectTrigger>
+              <SelectContent>{options.domains.map((domain) => <SelectItem key={domain.id} value={domain.id}>@{domain.name}</SelectItem>)}</SelectContent>
+            </Select>
+          </Field>
+          <Field label="显示名称"><Input name="displayName" placeholder="可选" /></Field>
+          <DialogFooter>
+            <Button type="button" variant="outline" onClick={() => setOpen(false)}>取消</Button>
+            <Button disabled={pending || !domainId}>{pending ? "申请中..." : "申请"}</Button>
+          </DialogFooter>
+        </form>
+      </DialogContent>
+    </Dialog>
+  )
 }
 
 function ContactsSection({ items, loading, onCreate, onDelete, onCopy, pending }: { items: { id: string; name: string; email: string; note: string }[]; loading: boolean; onCreate: (form: FormData) => void; onDelete: (id: string) => void; onCopy: (text: string) => void; pending: boolean }) {

deploy/.env.example

@@ -102,6 +102,15 @@ LANQIN_RSPAMD_DKIM_SYNC_SECONDS=60
 # 无人收件开关。false：未注册邮箱默认拒收；true：未注册收件地址进入全部邮件。
 LANQIN_CATCH_ALL_ENABLED=false
 
+# 用户是否可以在个人中心自助申请邮箱。
+LANQIN_USER_MAILBOX_APPLY_ENABLED=false
+
+# 允许自助申请的域名 ID，多个用英文逗号分隔。建议在后台“系统设置 > 邮件”里配置。
+LANQIN_USER_MAILBOX_DOMAIN_IDS=
+
+# 禁止自助申请的邮箱前缀，多个用英文逗号分隔。
+LANQIN_RESERVED_MAILBOX_PREFIXES=admin,postmaster,abuse,hostmaster,webmaster,root,security,noreply,no-reply,mailer-daemon
+
 # Webmail 是否自动轮询刷新邮件。
 LANQIN_MAIL_AUTO_REFRESH=true