feat: add right-click context menu to mail folders sidebar

app/[locale]/page.tsx

@@ -14,6 +14,7 @@ import { useAccountStore } from "@/stores/account-store";
 import type { UnifiedAccountClient } from "@/lib/unified-mailbox";
 import { KeyboardShortcutsModal } from "@/components/keyboard-shortcuts-modal";
 import { useEmailStore } from "@/stores/email-store";
+import { toast } from "@/stores/toast-store";
 import { useAuthStore, redirectToLogin } from "@/stores/auth-store";
 import { useSettingsStore } from "@/stores/settings-store";
 import { useContactStore } from "@/stores/contact-store";
@@ -162,6 +163,11 @@ export default function Home() {
     fetchUnifiedEmails: fetchUnifiedEmailsAction,
     refreshUnifiedCounts,
     exitUnifiedView,
+    emptyMailbox,
+    markMailboxAsRead,
+    createMailbox,
+    renameMailbox,
+    deleteMailbox,
   } = useEmailStore();
 
   const enableUnifiedMailbox = useSettingsStore((s) => s.enableUnifiedMailbox);
@@ -1097,6 +1103,181 @@ export default function Home() {
     }
   };
 
+  const tCtxMenu = t;
+
+  const handleMarkFolderRead = async (mailboxId: string) => {
+    if (!client) return;
+    try {
+      const count = await markMailboxAsRead(client, mailboxId);
+      await fetchMailboxes(client);
+      if (selectedMailbox === mailboxId) await fetchEmails(client, mailboxId);
+      if (count > 0) {
+        toast.success(tCtxMenu('mailbox_context_menu.toast_marked_read_count', { count }));
+      } else {
+        toast.success(tCtxMenu('mailbox_context_menu.toast_already_read'));
+      }
+    } catch {
+      toast.error(tCtxMenu('mailbox_context_menu.toast_error_mark_read'));
+    }
+  };
+
+  const handleMarkFolderTreeRead = async (mailboxId: string) => {
+    if (!client) return;
+    const collectIds = (rootId: string): string[] => {
+      const ids: string[] = [rootId];
+      const stack = [rootId];
+      while (stack.length > 0) {
+        const current = stack.pop()!;
+        for (const mb of mailboxes) {
+          if (mb.parentId === current) {
+            ids.push(mb.id);
+            stack.push(mb.id);
+          }
+        }
+      }
+      return ids;
+    };
+
+    try {
+      const ids = collectIds(mailboxId);
+      let total = 0;
+      for (const id of ids) {
+        total += await markMailboxAsRead(client, id);
+      }
+      await fetchMailboxes(client);
+      if (selectedMailbox && ids.includes(selectedMailbox)) await fetchEmails(client, selectedMailbox);
+      if (total > 0) {
+        toast.success(tCtxMenu('mailbox_context_menu.toast_marked_read_count', { count: total }));
+      } else {
+        toast.success(tCtxMenu('mailbox_context_menu.toast_already_read'));
+      }
+    } catch {
+      toast.error(tCtxMenu('mailbox_context_menu.toast_error_mark_read'));
+    }
+  };
+
+  const handleMarkAllFoldersRead = async () => {
+    if (!client) return;
+
+    const confirmed = await confirmDialog({
+      title: tCtxMenu('mailbox_context_menu.mark_all_confirm_title'),
+      message: tCtxMenu('mailbox_context_menu.mark_all_confirm_message'),
+      confirmText: tCtxMenu('mailbox_context_menu.mark_all_folders_read'),
+      variant: "default",
+    });
+    if (!confirmed) return;
+
+    try {
+      const total = await client.markAllAsRead();
+      await fetchMailboxes(client);
+      if (selectedMailbox) await fetchEmails(client, selectedMailbox);
+      if (total > 0) {
+        toast.success(tCtxMenu('mailbox_context_menu.toast_marked_read_count', { count: total }));
+      } else {
+        toast.success(tCtxMenu('mailbox_context_menu.toast_already_read'));
+      }
+    } catch {
+      toast.error(tCtxMenu('mailbox_context_menu.toast_error_mark_read'));
+    }
+  };
+
+  const handleEmptyFolderFromContextMenu = async (mailboxId: string) => {
+    if (!client) return;
+    const mailbox = mailboxes.find(mb => mb.id === mailboxId);
+    if (!mailbox) return;
+
+    const confirmed = await confirmDialog({
+      title: tCtxMenu('email_list.empty_folder.confirm_title'),
+      message: tCtxMenu('email_list.empty_folder.confirm_message'),
+      confirmText: tCtxMenu('email_list.empty_folder.confirm_button'),
+      variant: "destructive",
+    });
+    if (!confirmed) return;
+
+    try {
+      await emptyMailbox(client, mailboxId);
+      toast.success(tCtxMenu('mailbox_context_menu.toast_emptied'));
+    } catch {
+      toast.error(tCtxMenu('mailbox_context_menu.toast_error_empty'));
+    }
+  };
+
+  const handleCreateSubfolderFromContextMenu = async (parentId: string) => {
+    if (!client) return;
+    const name = window.prompt(tCtxMenu('mailbox_context_menu.prompt_new_subfolder'));
+    if (!name || !name.trim()) return;
+    try {
+      await createMailbox(client, name.trim(), parentId);
+      toast.success(tCtxMenu('mailbox_context_menu.toast_folder_created'));
+    } catch {
+      toast.error(tCtxMenu('mailbox_context_menu.toast_error_create'));
+    }
+  };
+
+  const handleCreateFolderFromContextMenu = async () => {
+    if (!client) return;
+    const name = window.prompt(tCtxMenu('mailbox_context_menu.prompt_new_folder'));
+    if (!name || !name.trim()) return;
+    try {
+      await createMailbox(client, name.trim());
+      toast.success(tCtxMenu('mailbox_context_menu.toast_folder_created'));
+    } catch {
+      toast.error(tCtxMenu('mailbox_context_menu.toast_error_create'));
+    }
+  };
+
+  const handleRenameFolderFromContextMenu = async (mailboxId: string) => {
+    if (!client) return;
+    const mailbox = mailboxes.find(mb => mb.id === mailboxId);
+    if (!mailbox) return;
+    const name = window.prompt(tCtxMenu('mailbox_context_menu.prompt_rename'), mailbox.name);
+    if (!name || !name.trim() || name.trim() === mailbox.name) return;
+    try {
+      await renameMailbox(client, mailboxId, name.trim());
+      toast.success(tCtxMenu('mailbox_context_menu.toast_folder_renamed'));
+    } catch {
+      toast.error(tCtxMenu('mailbox_context_menu.toast_error_rename'));
+    }
+  };
+
+  const handleDeleteFolderFromContextMenu = async (mailboxId: string) => {
+    if (!client) return;
+    const mailbox = mailboxes.find(mb => mb.id === mailboxId);
+    if (!mailbox) return;
+
+    const confirmed = await confirmDialog({
+      title: tCtxMenu('mailbox_context_menu.delete_confirm_title'),
+      message: tCtxMenu('mailbox_context_menu.delete_confirm_message', { name: mailbox.name }),
+      confirmText: tCtxMenu('mailbox_context_menu.delete_folder'),
+      variant: "destructive",
+    });
+    if (!confirmed) return;
+
+    try {
+      await deleteMailbox(client, mailboxId);
+      toast.success(tCtxMenu('mailbox_context_menu.toast_folder_deleted'));
+    } catch (err: unknown) {
+      const jmapType = (err as Error & { jmapType?: string })?.jmapType;
+      if (jmapType === 'mailboxHasChild') {
+        toast.error(tCtxMenu('mailbox_context_menu.toast_error_delete_has_children'));
+      } else if (jmapType === 'mailboxHasEmail') {
+        toast.error(tCtxMenu('mailbox_context_menu.toast_error_delete_has_email'));
+      } else {
+        toast.error(tCtxMenu('mailbox_context_menu.toast_error_delete'));
+      }
+    }
+  };
+
+  const handleRefreshMailboxes = async () => {
+    if (!client) return;
+    try {
+      await fetchMailboxes(client);
+      if (selectedMailbox) await fetchEmails(client, selectedMailbox);
+    } catch {
+      // silent
+    }
+  };
+
   const handleLogout = logout;
 
   const handleSearch = async (query: string) => {
@@ -1454,6 +1635,15 @@ export default function Home() {
               onMailboxSelect={handleMailboxSelect}
               onTagSelect={handleTagSelect}
               onUnreadFilterClick={handleUnreadFilterClick}
+              onMarkFolderRead={handleMarkFolderRead}
+              onMarkFolderTreeRead={handleMarkFolderTreeRead}
+              onMarkAllFoldersRead={handleMarkAllFoldersRead}
+              onEmptyFolder={handleEmptyFolderFromContextMenu}
+              onCreateSubfolder={handleCreateSubfolderFromContextMenu}
+              onCreateFolder={handleCreateFolderFromContextMenu}
+              onRenameFolder={handleRenameFolderFromContextMenu}
+              onDeleteFolder={handleDeleteFolderFromContextMenu}
+              onRefreshMailboxes={handleRefreshMailboxes}
               onCompose={() => {
                 setComposerMode('compose');
                 setShowComposer(true);

components/layout/mailbox-context-menu.tsx

@@ -0,0 +1,171 @@
+"use client";
+
+import { useTranslations } from "next-intl";
+import { Mailbox } from "@/lib/jmap/types";
+import {
+  ContextMenu,
+  ContextMenuItem,
+  ContextMenuSeparator,
+  ContextMenuHeader,
+} from "@/components/ui/context-menu";
+import {
+  CheckCheck,
+  MailOpen,
+  Mails,
+  Trash2,
+  FolderPlus,
+  Pencil,
+  FolderX,
+  RefreshCw,
+} from "lucide-react";
+
+interface Position {
+  x: number;
+  y: number;
+}
+
+export type MailboxContextTarget =
+  | { kind: "mailbox"; mailbox: Mailbox; hasChildren: boolean }
+  | { kind: "folders-section" };
+
+interface MailboxContextMenuProps {
+  target: MailboxContextTarget | null;
+  position: Position;
+  isOpen: boolean;
+  onClose: () => void;
+  menuRef: React.RefObject<HTMLDivElement | null>;
+  onMarkFolderRead?: (mailboxId: string) => void;
+  onMarkFolderTreeRead?: (mailboxId: string) => void;
+  onMarkAllFoldersRead?: () => void;
+  onEmptyFolder?: (mailboxId: string) => void;
+  onCreateSubfolder?: (parentId: string) => void;
+  onCreateFolder?: () => void;
+  onRenameFolder?: (mailboxId: string) => void;
+  onDeleteFolder?: (mailboxId: string) => void;
+  onRefresh?: () => void;
+}
+
+export function MailboxContextMenu({
+  target,
+  position,
+  isOpen,
+  onClose,
+  menuRef,
+  onMarkFolderRead,
+  onMarkFolderTreeRead,
+  onMarkAllFoldersRead,
+  onEmptyFolder,
+  onCreateSubfolder,
+  onCreateFolder,
+  onRenameFolder,
+  onDeleteFolder,
+  onRefresh,
+}: MailboxContextMenuProps) {
+  const t = useTranslations("mailbox_context_menu");
+
+  const handleAction = (action: () => void) => {
+    action();
+    onClose();
+  };
+
+  if (!target) return null;
+
+  if (target.kind === "folders-section") {
+    return (
+      <ContextMenu ref={menuRef} isOpen={isOpen} position={position} onClose={onClose}>
+        <ContextMenuItem
+          icon={CheckCheck}
+          label={t("mark_all_folders_read")}
+          onClick={() => handleAction(onMarkAllFoldersRead!)}
+          disabled={!onMarkAllFoldersRead}
+        />
+        <ContextMenuSeparator />
+        <ContextMenuItem
+          icon={FolderPlus}
+          label={t("new_folder")}
+          onClick={() => handleAction(onCreateFolder!)}
+          disabled={!onCreateFolder}
+        />
+        <ContextMenuItem
+          icon={RefreshCw}
+          label={t("refresh")}
+          onClick={() => handleAction(onRefresh!)}
+          disabled={!onRefresh}
+        />
+      </ContextMenu>
+    );
+  }
+
+  const mailbox = target.mailbox;
+  const isTrashOrJunk = mailbox.role === "trash" || mailbox.role === "junk";
+  const isSystem =
+    !!mailbox.role &&
+    ["inbox", "sent", "drafts", "trash", "junk", "archive"].includes(mailbox.role);
+  const canRename = mailbox.myRights?.mayRename !== false && !isSystem;
+  const canDelete = mailbox.myRights?.mayDelete !== false && !isSystem;
+  const canCreateChild = mailbox.myRights?.mayCreateChild !== false;
+  const canSetSeen = mailbox.myRights?.maySetSeen !== false;
+  const canRemoveItems = mailbox.myRights?.mayRemoveItems !== false;
+
+  return (
+    <ContextMenu ref={menuRef} isOpen={isOpen} position={position} onClose={onClose}>
+      <ContextMenuHeader>{mailbox.name}</ContextMenuHeader>
+
+      <ContextMenuItem
+        icon={MailOpen}
+        label={t("mark_folder_read")}
+        onClick={() => handleAction(() => onMarkFolderRead?.(mailbox.id))}
+        disabled={!onMarkFolderRead || !canSetSeen}
+      />
+      {target.hasChildren && (
+        <ContextMenuItem
+          icon={Mails}
+          label={t("mark_folder_tree_read")}
+          onClick={() => handleAction(() => onMarkFolderTreeRead?.(mailbox.id))}
+          disabled={!onMarkFolderTreeRead || !canSetSeen}
+        />
+      )}
+
+      <ContextMenuSeparator />
+
+      <ContextMenuItem
+        icon={FolderPlus}
+        label={t("new_subfolder")}
+        onClick={() => handleAction(() => onCreateSubfolder?.(mailbox.id))}
+        disabled={!onCreateSubfolder || !canCreateChild}
+      />
+      <ContextMenuItem
+        icon={Pencil}
+        label={t("rename")}
+        onClick={() => handleAction(() => onRenameFolder?.(mailbox.id))}
+        disabled={!onRenameFolder || !canRename}
+      />
+
+      <ContextMenuSeparator />
+
+      <ContextMenuItem
+        icon={FolderX}
+        label={isTrashOrJunk ? t("empty_folder") : t("empty_folder_generic")}
+        onClick={() => handleAction(() => onEmptyFolder?.(mailbox.id))}
+        disabled={!onEmptyFolder || mailbox.totalEmails === 0 || !canRemoveItems}
+        destructive
+      />
+      <ContextMenuItem
+        icon={Trash2}
+        label={t("delete_folder")}
+        onClick={() => handleAction(() => onDeleteFolder?.(mailbox.id))}
+        disabled={!onDeleteFolder || !canDelete}
+        destructive
+      />
+
+      <ContextMenuSeparator />
+
+      <ContextMenuItem
+        icon={RefreshCw}
+        label={t("refresh")}
+        onClick={() => handleAction(onRefresh!)}
+        disabled={!onRefresh}
+      />
+    </ContextMenu>
+  );
+}

components/layout/sidebar.tsx

@@ -31,6 +31,8 @@ import {
 } from "lucide-react";
 import { cn, buildMailboxTree, MailboxNode } from "@/lib/utils";
 import { Mailbox } from "@/lib/jmap/types";
+import { useContextMenu } from "@/hooks/use-context-menu";
+import { MailboxContextMenu, type MailboxContextTarget } from "./mailbox-context-menu";
 import { useAccountStore } from '@/stores/account-store';
 import { UNIFIED_MAILBOX_IDS } from '@/lib/jmap/types';
 import type { UnifiedMailboxRole } from '@/lib/jmap/types';
@@ -56,6 +58,15 @@ interface SidebarProps {
   onCompose?: () => void;
   onSidebarClose?: () => void;
   onUnreadFilterClick?: (mailboxId: string) => void;
+  onMarkFolderRead?: (mailboxId: string) => void;
+  onMarkFolderTreeRead?: (mailboxId: string) => void;
+  onMarkAllFoldersRead?: () => void;
+  onEmptyFolder?: (mailboxId: string) => void;
+  onCreateSubfolder?: (parentId: string) => void;
+  onCreateFolder?: () => void;
+  onRenameFolder?: (mailboxId: string) => void;
+  onDeleteFolder?: (mailboxId: string) => void;
+  onRefreshMailboxes?: () => void;
   className?: string;
 }
 
@@ -187,6 +198,7 @@ interface SidebarRowProps {
   dropHandlers?: Record<string, unknown>;
   isValidDropTarget?: boolean;
   isInvalidDropTarget?: boolean;
+  onContextMenu?: (e: React.MouseEvent) => void;
 }
 
 function SidebarRow({
@@ -206,6 +218,7 @@ function SidebarRow({
   dropHandlers,
   isValidDropTarget,
   isInvalidDropTarget,
+  onContextMenu,
 }: SidebarRowProps) {
   const t = useTranslations('sidebar');
   const leftPad = isCollapsed ? 0 : ROW_PX_BASE + depth * INDENT_STEP;
@@ -213,6 +226,7 @@ function SidebarRow({
   return (
     <div
       {...(dropHandlers || {})}
+      onContextMenu={onContextMenu}
       style={{ paddingBlock: 'var(--density-sidebar-py)' }}
       className={cn(
         "group w-full flex items-center max-lg:min-h-[44px] text-sm transition-colors duration-150",
@@ -365,6 +379,7 @@ function MailboxTreeItem({
   isCollapsed,
   onUnreadFilterClick,
   colorful,
+  onContextMenu,
 }: {
   node: MailboxNode;
   selectedMailbox: string;
@@ -374,6 +389,7 @@ function MailboxTreeItem({
   isCollapsed: boolean;
   onUnreadFilterClick?: (mailboxId: string) => void;
   colorful: boolean;
+  onContextMenu?: (e: React.MouseEvent, node: MailboxNode) => void;
 }) {
   const tNotifications = useTranslations('notifications');
   const hasChildren = node.children.length > 0;
@@ -423,6 +439,7 @@ function MailboxTreeItem({
         dropHandlers={globalDragging ? (dropHandlers as Record<string, unknown>) : undefined}
         isValidDropTarget={isValidDropTarget}
         isInvalidDropTarget={isInvalidDropTarget}
+        onContextMenu={onContextMenu && !isVirtualNode ? (e) => onContextMenu(e, node) : undefined}
       />
 
       {hasChildren && isExpanded && !isCollapsed && node.children.map((child) => (
@@ -436,6 +453,7 @@ function MailboxTreeItem({
           isCollapsed={isCollapsed}
           onUnreadFilterClick={onUnreadFilterClick}
           colorful={colorful}
+          onContextMenu={onContextMenu}
         />
       ))}
     </>
@@ -610,6 +628,15 @@ export function Sidebar({
   onCompose: _onCompose,
   onSidebarClose,
   onUnreadFilterClick,
+  onMarkFolderRead,
+  onMarkFolderTreeRead,
+  onMarkAllFoldersRead,
+  onEmptyFolder,
+  onCreateSubfolder,
+  onCreateFolder,
+  onRenameFolder,
+  onDeleteFolder,
+  onRefreshMailboxes,
   className,
 }: SidebarProps) {
   const router = useRouter();
@@ -790,6 +817,23 @@ export function Sidebar({
     router.push('/settings');
   };
 
+  const {
+    contextMenu: mailboxContextMenu,
+    openContextMenu: openMailboxContextMenu,
+    closeContextMenu: closeMailboxContextMenu,
+    menuRef: mailboxMenuRef,
+  } = useContextMenu<MailboxContextTarget>();
+
+  const handleMailboxContextMenu = (e: React.MouseEvent, node: MailboxNode) => {
+    const mailbox = mailboxes.find(mb => mb.id === node.id);
+    if (!mailbox) return;
+    openMailboxContextMenu(e, { kind: "mailbox", mailbox, hasChildren: node.children.length > 0 });
+  };
+
+  const handleFoldersHeaderContextMenu = (e: React.MouseEvent) => {
+    openMailboxContextMenu(e, { kind: "folders-section" });
+  };
+
   return (
     <div
       className={cn(
@@ -866,7 +910,7 @@ export function Sidebar({
           </div>
         )}
 
-        <div>
+        <div onContextMenu={handleFoldersHeaderContextMenu}>
           <SidebarSectionHeader
             label={t("folders")}
             expanded={foldersExpanded}
@@ -894,6 +938,7 @@ export function Sidebar({
                     isCollapsed={isCollapsed}
                     onUnreadFilterClick={onUnreadFilterClick}
                     colorful={colorfulSidebarIcons}
+                    onContextMenu={handleMailboxContextMenu}
                   />
                 ))
               )}
@@ -934,6 +979,7 @@ export function Sidebar({
                           isCollapsed={isCollapsed}
                           onUnreadFilterClick={onUnreadFilterClick}
                           colorful={colorfulSidebarIcons}
+                          onContextMenu={handleMailboxContextMenu}
                         />
                       ))}
                     </div>
@@ -975,6 +1021,23 @@ export function Sidebar({
 
         {!isCollapsed && <PluginSlot name="sidebar-widget" className="border-t border-border" />}
       </div>
+
+      <MailboxContextMenu
+        target={mailboxContextMenu.data}
+        position={mailboxContextMenu.position}
+        isOpen={mailboxContextMenu.isOpen}
+        onClose={closeMailboxContextMenu}
+        menuRef={mailboxMenuRef}
+        onMarkFolderRead={onMarkFolderRead}
+        onMarkFolderTreeRead={onMarkFolderTreeRead}
+        onMarkAllFoldersRead={onMarkAllFoldersRead}
+        onEmptyFolder={onEmptyFolder}
+        onCreateSubfolder={onCreateSubfolder}
+        onCreateFolder={onCreateFolder}
+        onRenameFolder={onRenameFolder}
+        onDeleteFolder={onDeleteFolder}
+        onRefresh={onRefreshMailboxes}
+      />
     </div>
   );
 }

lib/demo/demo-client.ts

@@ -312,6 +312,33 @@ export class DemoJMAPClient implements IJMAPClient {
     return removed;
   }
 
+  async markMailboxAsRead(mailboxId: string): Promise<number> {
+    let count = 0;
+    for (const email of this.data.emails) {
+      if (email.mailboxIds[mailboxId] && email.keywords.$seen !== true) {
+        email.keywords.$seen = true;
+        count++;
+      }
+    }
+    this.recalcMailboxCounts();
+    return count;
+  }
+
+  async markAllAsRead(excludeMailboxIds: string[] = []): Promise<number> {
+    const excluded = new Set(excludeMailboxIds);
+    let count = 0;
+    for (const email of this.data.emails) {
+      if (email.keywords.$seen === true) continue;
+      const mbIds = Object.keys(email.mailboxIds);
+      const onlyInExcluded = mbIds.length > 0 && mbIds.every(id => excluded.has(id));
+      if (onlyInExcluded) continue;
+      email.keywords.$seen = true;
+      count++;
+    }
+    this.recalcMailboxCounts();
+    return count;
+  }
+
   async markAsSpam(emailId: string): Promise<void> {
     const email = this.data.emails.find(e => e.id === emailId);
     const junkMb = this.data.mailboxes.find(m => m.role === 'junk');

lib/jmap/client-interface.ts

@@ -94,6 +94,8 @@ export interface IJMAPClient {
   ): Promise<void>;
   moveEmail(emailId: string, toMailboxId: string, accountId?: string): Promise<void>;
   emptyMailbox(mailboxId: string): Promise<number>;
+  markMailboxAsRead(mailboxId: string, accountId?: string): Promise<number>;
+  markAllAsRead(excludeMailboxIds?: string[], accountId?: string): Promise<number>;
   markAsSpam(emailId: string, accountId?: string): Promise<void>;
   undoSpam(emailId: string, originalMailboxId: string, accountId?: string): Promise<void>;
 

lib/jmap/client.ts

@@ -1361,6 +1361,99 @@ export class JMAPClient implements IJMAPClient {
     return totalDestroyed;
   }
 
+  async markMailboxAsRead(mailboxId: string, accountId?: string): Promise<number> {
+    const targetAccountId = accountId || this.accountId;
+    let totalMarked = 0;
+    let hasMore = true;
+
+    while (hasMore) {
+      const queryResponse = await this.request([
+        ["Email/query", {
+          accountId: targetAccountId,
+          filter: {
+            operator: "AND",
+            conditions: [
+              { inMailbox: mailboxId },
+              { notKeyword: "$seen" },
+            ],
+          },
+          limit: 500,
+        }, "0"],
+      ]);
+
+      const ids: string[] = queryResponse.methodResponses?.[0]?.[1]?.ids || [];
+      if (ids.length === 0) break;
+
+      const updates = Object.fromEntries(
+        ids.map((id) => [id, { "keywords/$seen": true }])
+      );
+
+      await this.request([
+        ["Email/set", { accountId: targetAccountId, update: updates }, "0"],
+      ]);
+
+      totalMarked += ids.length;
+      hasMore = ids.length === 500;
+    }
+
+    return totalMarked;
+  }
+
+  async markAllAsRead(excludeMailboxIds: string[] = [], accountId?: string): Promise<number> {
+    const targetAccountId = accountId || this.accountId;
+    const excludeSet = new Set(excludeMailboxIds);
+    let totalMarked = 0;
+    let hasMore = true;
+    let position = 0;
+
+    while (hasMore) {
+      const response = await this.request([
+        ["Email/query", {
+          accountId: targetAccountId,
+          filter: { notKeyword: "$seen" },
+          limit: 500,
+          position,
+        }, "0"],
+        ["Email/get", {
+          accountId: targetAccountId,
+          "#ids": { resultOf: "0", name: "Email/query", path: "/ids" },
+          properties: ["id", "mailboxIds"],
+        }, "1"],
+      ]);
+
+      const queryResult = response.methodResponses?.[0]?.[1];
+      const getResult = response.methodResponses?.[1]?.[1];
+      const ids: string[] = queryResult?.ids || [];
+      const emails: Array<{ id: string; mailboxIds?: Record<string, boolean> }> = getResult?.list || [];
+
+      if (ids.length === 0) break;
+
+      const targetIds = excludeSet.size === 0
+        ? ids
+        : emails
+            .filter(e => {
+              const mbIds = e.mailboxIds ? Object.keys(e.mailboxIds) : [];
+              return mbIds.some(id => !excludeSet.has(id));
+            })
+            .map(e => e.id);
+
+      if (targetIds.length > 0) {
+        const updates = Object.fromEntries(
+          targetIds.map((id) => [id, { "keywords/$seen": true }])
+        );
+        await this.request([
+          ["Email/set", { accountId: targetAccountId, update: updates }, "0"],
+        ]);
+        totalMarked += targetIds.length;
+      }
+
+      hasMore = ids.length === 500;
+      position += ids.length;
+    }
+
+    return totalMarked;
+  }
+
   async markAsSpam(emailId: string, accountId?: string): Promise<void> {
     const targetAccountId = accountId || this.accountId;
 

locales/de/common.json

@@ -1590,6 +1590,40 @@
     "items_selected": "{count} E-Mails ausgewählt",
     "edit_draft": "Entwurf bearbeiten"
   },
+  "mailbox_context_menu": {
+    "mark_folder_read": "Ordner als gelesen markieren",
+    "mark_folder_tree_read": "Ordner & Unterordner als gelesen markieren",
+    "mark_all_folders_read": "Alle Ordner als gelesen markieren",
+    "new_subfolder": "Neuer Unterordner...",
+    "new_folder": "Neuer Ordner...",
+    "rename": "Umbenennen...",
+    "empty_folder": "Ordner leeren",
+    "empty_folder_generic": "Ordner leeren",
+    "delete_folder": "Ordner löschen",
+    "refresh": "Aktualisieren",
+    "mark_all_confirm_title": "Alle Ordner als gelesen markieren",
+    "mark_all_confirm_message": "Jede ungelesene Nachricht in deinem persönlichen Konto als gelesen markieren?",
+    "delete_confirm_title": "Ordner löschen",
+    "delete_confirm_message": "Den Ordner \"{name}\" dauerhaft löschen? Dies kann nicht rückgängig gemacht werden.",
+    "prompt_new_subfolder": "Name des neuen Unterordners:",
+    "prompt_new_folder": "Name des neuen Ordners:",
+    "prompt_rename": "Ordner umbenennen in:",
+    "toast_marked_read": "Ordner als gelesen markiert",
+    "toast_marked_read_count": "{count, plural, one {1 Nachricht} other {# Nachrichten}} als gelesen markiert",
+    "toast_already_read": "Keine ungelesenen Nachrichten",
+    "toast_marked_all_read": "Alle Ordner als gelesen markiert",
+    "toast_emptied": "Ordner geleert",
+    "toast_folder_created": "Ordner erstellt",
+    "toast_folder_renamed": "Ordner umbenannt",
+    "toast_folder_deleted": "Ordner gelöscht",
+    "toast_error_mark_read": "Konnte nicht als gelesen markiert werden",
+    "toast_error_empty": "Ordner konnte nicht geleert werden",
+    "toast_error_create": "Ordner konnte nicht erstellt werden",
+    "toast_error_rename": "Ordner konnte nicht umbenannt werden",
+    "toast_error_delete": "Ordner konnte nicht gelöscht werden",
+    "toast_error_delete_has_children": "Ordner enthält Unterordner. Entferne diese zuerst.",
+    "toast_error_delete_has_email": "Ordner ist nicht leer. Leere ihn zuerst."
+  },
   "shortcuts": {
     "title": "Tastaturkürzel",
     "tip": "Drücken Sie ? jederzeit, um diese Hilfe anzuzeigen",

locales/en/common.json

@@ -1594,6 +1594,40 @@
     "items_selected": "{count} emails selected",
     "edit_draft": "Edit Draft"
   },
+  "mailbox_context_menu": {
+    "mark_folder_read": "Mark folder as read",
+    "mark_folder_tree_read": "Mark folder & subfolders as read",
+    "mark_all_folders_read": "Mark all folders as read",
+    "new_subfolder": "New subfolder...",
+    "new_folder": "New folder...",
+    "rename": "Rename...",
+    "empty_folder": "Empty folder",
+    "empty_folder_generic": "Empty folder",
+    "delete_folder": "Delete folder",
+    "refresh": "Refresh",
+    "mark_all_confirm_title": "Mark all folders as read",
+    "mark_all_confirm_message": "Mark every unread message in your personal account as read?",
+    "delete_confirm_title": "Delete folder",
+    "delete_confirm_message": "Permanently delete the folder \"{name}\"? This action cannot be undone.",
+    "prompt_new_subfolder": "New subfolder name:",
+    "prompt_new_folder": "New folder name:",
+    "prompt_rename": "Rename folder to:",
+    "toast_marked_read": "Folder marked as read",
+    "toast_marked_read_count": "Marked {count, plural, one {1 message} other {# messages}} as read",
+    "toast_already_read": "No unread messages",
+    "toast_marked_all_read": "All folders marked as read",
+    "toast_emptied": "Folder emptied",
+    "toast_folder_created": "Folder created",
+    "toast_folder_renamed": "Folder renamed",
+    "toast_folder_deleted": "Folder deleted",
+    "toast_error_mark_read": "Failed to mark as read",
+    "toast_error_empty": "Failed to empty folder",
+    "toast_error_create": "Failed to create folder",
+    "toast_error_rename": "Failed to rename folder",
+    "toast_error_delete": "Failed to delete folder",
+    "toast_error_delete_has_children": "Folder has subfolders. Remove them first.",
+    "toast_error_delete_has_email": "Folder is not empty. Empty it first."
+  },
   "shortcuts": {
     "title": "Keyboard Shortcuts",
     "tip": "Press ? anytime to show this help",

locales/es/common.json

@@ -1590,6 +1590,40 @@
     "items_selected": "{count} correos seleccionados",
     "edit_draft": "Editar borrador"
   },
+  "mailbox_context_menu": {
+    "mark_folder_read": "Mark folder as read",
+    "mark_folder_tree_read": "Mark folder & subfolders as read",
+    "mark_all_folders_read": "Mark all folders as read",
+    "new_subfolder": "New subfolder...",
+    "new_folder": "New folder...",
+    "rename": "Rename...",
+    "empty_folder": "Empty folder",
+    "empty_folder_generic": "Empty folder",
+    "delete_folder": "Delete folder",
+    "refresh": "Refresh",
+    "mark_all_confirm_title": "Mark all folders as read",
+    "mark_all_confirm_message": "Mark every unread message in your personal account as read?",
+    "delete_confirm_title": "Delete folder",
+    "delete_confirm_message": "Permanently delete the folder \"{name}\"? This action cannot be undone.",
+    "prompt_new_subfolder": "New subfolder name:",
+    "prompt_new_folder": "New folder name:",
+    "prompt_rename": "Rename folder to:",
+    "toast_marked_read": "Folder marked as read",
+    "toast_marked_read_count": "Marked {count, plural, one {1 message} other {# messages}} as read",
+    "toast_already_read": "No unread messages",
+    "toast_marked_all_read": "All folders marked as read",
+    "toast_emptied": "Folder emptied",
+    "toast_folder_created": "Folder created",
+    "toast_folder_renamed": "Folder renamed",
+    "toast_folder_deleted": "Folder deleted",
+    "toast_error_mark_read": "Failed to mark as read",
+    "toast_error_empty": "Failed to empty folder",
+    "toast_error_create": "Failed to create folder",
+    "toast_error_rename": "Failed to rename folder",
+    "toast_error_delete": "Failed to delete folder",
+    "toast_error_delete_has_children": "Folder has subfolders. Remove them first.",
+    "toast_error_delete_has_email": "Folder is not empty. Empty it first."
+  },
   "shortcuts": {
     "title": "Atajos de Teclado",
     "tip": "Presione ? en cualquier momento para mostrar esta ayuda",

locales/fr/common.json

@@ -1590,6 +1590,40 @@
     "items_selected": "{count} emails sélectionnés",
     "edit_draft": "Modifier le brouillon"
   },
+  "mailbox_context_menu": {
+    "mark_folder_read": "Mark folder as read",
+    "mark_folder_tree_read": "Mark folder & subfolders as read",
+    "mark_all_folders_read": "Mark all folders as read",
+    "new_subfolder": "New subfolder...",
+    "new_folder": "New folder...",
+    "rename": "Rename...",
+    "empty_folder": "Empty folder",
+    "empty_folder_generic": "Empty folder",
+    "delete_folder": "Delete folder",
+    "refresh": "Refresh",
+    "mark_all_confirm_title": "Mark all folders as read",
+    "mark_all_confirm_message": "Mark every unread message in your personal account as read?",
+    "delete_confirm_title": "Delete folder",
+    "delete_confirm_message": "Permanently delete the folder \"{name}\"? This action cannot be undone.",
+    "prompt_new_subfolder": "New subfolder name:",
+    "prompt_new_folder": "New folder name:",
+    "prompt_rename": "Rename folder to:",
+    "toast_marked_read": "Folder marked as read",
+    "toast_marked_read_count": "Marked {count, plural, one {1 message} other {# messages}} as read",
+    "toast_already_read": "No unread messages",
+    "toast_marked_all_read": "All folders marked as read",
+    "toast_emptied": "Folder emptied",
+    "toast_folder_created": "Folder created",
+    "toast_folder_renamed": "Folder renamed",
+    "toast_folder_deleted": "Folder deleted",
+    "toast_error_mark_read": "Failed to mark as read",
+    "toast_error_empty": "Failed to empty folder",
+    "toast_error_create": "Failed to create folder",
+    "toast_error_rename": "Failed to rename folder",
+    "toast_error_delete": "Failed to delete folder",
+    "toast_error_delete_has_children": "Folder has subfolders. Remove them first.",
+    "toast_error_delete_has_email": "Folder is not empty. Empty it first."
+  },
   "shortcuts": {
     "title": "Raccourcis clavier",
     "tip": "Appuyez sur ? à tout moment pour afficher cette aide",

locales/it/common.json

@@ -1590,6 +1590,40 @@
     "items_selected": "{count} messaggi selezionati",
     "edit_draft": "Modifica bozza"
   },
+  "mailbox_context_menu": {
+    "mark_folder_read": "Mark folder as read",
+    "mark_folder_tree_read": "Mark folder & subfolders as read",
+    "mark_all_folders_read": "Mark all folders as read",
+    "new_subfolder": "New subfolder...",
+    "new_folder": "New folder...",
+    "rename": "Rename...",
+    "empty_folder": "Empty folder",
+    "empty_folder_generic": "Empty folder",
+    "delete_folder": "Delete folder",
+    "refresh": "Refresh",
+    "mark_all_confirm_title": "Mark all folders as read",
+    "mark_all_confirm_message": "Mark every unread message in your personal account as read?",
+    "delete_confirm_title": "Delete folder",
+    "delete_confirm_message": "Permanently delete the folder \"{name}\"? This action cannot be undone.",
+    "prompt_new_subfolder": "New subfolder name:",
+    "prompt_new_folder": "New folder name:",
+    "prompt_rename": "Rename folder to:",
+    "toast_marked_read": "Folder marked as read",
+    "toast_marked_read_count": "Marked {count, plural, one {1 message} other {# messages}} as read",
+    "toast_already_read": "No unread messages",
+    "toast_marked_all_read": "All folders marked as read",
+    "toast_emptied": "Folder emptied",
+    "toast_folder_created": "Folder created",
+    "toast_folder_renamed": "Folder renamed",
+    "toast_folder_deleted": "Folder deleted",
+    "toast_error_mark_read": "Failed to mark as read",
+    "toast_error_empty": "Failed to empty folder",
+    "toast_error_create": "Failed to create folder",
+    "toast_error_rename": "Failed to rename folder",
+    "toast_error_delete": "Failed to delete folder",
+    "toast_error_delete_has_children": "Folder has subfolders. Remove them first.",
+    "toast_error_delete_has_email": "Folder is not empty. Empty it first."
+  },
   "shortcuts": {
     "title": "Scorciatoie da tastiera",
     "tip": "Premi ? in qualsiasi momento per mostrare questo aiuto",

locales/ja/common.json

@@ -1590,6 +1590,40 @@
     "items_selected": "{count}件のメールを選択",
     "edit_draft": "下書きを編集"
   },
+  "mailbox_context_menu": {
+    "mark_folder_read": "Mark folder as read",
+    "mark_folder_tree_read": "Mark folder & subfolders as read",
+    "mark_all_folders_read": "Mark all folders as read",
+    "new_subfolder": "New subfolder...",
+    "new_folder": "New folder...",
+    "rename": "Rename...",
+    "empty_folder": "Empty folder",
+    "empty_folder_generic": "Empty folder",
+    "delete_folder": "Delete folder",
+    "refresh": "Refresh",
+    "mark_all_confirm_title": "Mark all folders as read",
+    "mark_all_confirm_message": "Mark every unread message in your personal account as read?",
+    "delete_confirm_title": "Delete folder",
+    "delete_confirm_message": "Permanently delete the folder \"{name}\"? This action cannot be undone.",
+    "prompt_new_subfolder": "New subfolder name:",
+    "prompt_new_folder": "New folder name:",
+    "prompt_rename": "Rename folder to:",
+    "toast_marked_read": "Folder marked as read",
+    "toast_marked_read_count": "Marked {count, plural, one {1 message} other {# messages}} as read",
+    "toast_already_read": "No unread messages",
+    "toast_marked_all_read": "All folders marked as read",
+    "toast_emptied": "Folder emptied",
+    "toast_folder_created": "Folder created",
+    "toast_folder_renamed": "Folder renamed",
+    "toast_folder_deleted": "Folder deleted",
+    "toast_error_mark_read": "Failed to mark as read",
+    "toast_error_empty": "Failed to empty folder",
+    "toast_error_create": "Failed to create folder",
+    "toast_error_rename": "Failed to rename folder",
+    "toast_error_delete": "Failed to delete folder",
+    "toast_error_delete_has_children": "Folder has subfolders. Remove them first.",
+    "toast_error_delete_has_email": "Folder is not empty. Empty it first."
+  },
   "shortcuts": {
     "title": "キーボードショートカット",
     "tip": "? キーを押すといつでもこのヘルプを表示できます",

locales/ko/common.json

@@ -1590,6 +1590,40 @@
     "items_selected": "{count}개의 메일 선택됨",
     "edit_draft": "임시보관 메일 수정"
   },
+  "mailbox_context_menu": {
+    "mark_folder_read": "Mark folder as read",
+    "mark_folder_tree_read": "Mark folder & subfolders as read",
+    "mark_all_folders_read": "Mark all folders as read",
+    "new_subfolder": "New subfolder...",
+    "new_folder": "New folder...",
+    "rename": "Rename...",
+    "empty_folder": "Empty folder",
+    "empty_folder_generic": "Empty folder",
+    "delete_folder": "Delete folder",
+    "refresh": "Refresh",
+    "mark_all_confirm_title": "Mark all folders as read",
+    "mark_all_confirm_message": "Mark every unread message in your personal account as read?",
+    "delete_confirm_title": "Delete folder",
+    "delete_confirm_message": "Permanently delete the folder \"{name}\"? This action cannot be undone.",
+    "prompt_new_subfolder": "New subfolder name:",
+    "prompt_new_folder": "New folder name:",
+    "prompt_rename": "Rename folder to:",
+    "toast_marked_read": "Folder marked as read",
+    "toast_marked_read_count": "Marked {count, plural, one {1 message} other {# messages}} as read",
+    "toast_already_read": "No unread messages",
+    "toast_marked_all_read": "All folders marked as read",
+    "toast_emptied": "Folder emptied",
+    "toast_folder_created": "Folder created",
+    "toast_folder_renamed": "Folder renamed",
+    "toast_folder_deleted": "Folder deleted",
+    "toast_error_mark_read": "Failed to mark as read",
+    "toast_error_empty": "Failed to empty folder",
+    "toast_error_create": "Failed to create folder",
+    "toast_error_rename": "Failed to rename folder",
+    "toast_error_delete": "Failed to delete folder",
+    "toast_error_delete_has_children": "Folder has subfolders. Remove them first.",
+    "toast_error_delete_has_email": "Folder is not empty. Empty it first."
+  },
   "shortcuts": {
     "title": "단축키",
     "tip": "언제든 ? 키를 누르면 이 도움말을 볼 수 있어요",

locales/lv/common.json

@@ -1590,6 +1590,40 @@
     "items_selected": "{count} vēstules atlasītas",
     "edit_draft": "Rediģēt melnrakstu"
   },
+  "mailbox_context_menu": {
+    "mark_folder_read": "Mark folder as read",
+    "mark_folder_tree_read": "Mark folder & subfolders as read",
+    "mark_all_folders_read": "Mark all folders as read",
+    "new_subfolder": "New subfolder...",
+    "new_folder": "New folder...",
+    "rename": "Rename...",
+    "empty_folder": "Empty folder",
+    "empty_folder_generic": "Empty folder",
+    "delete_folder": "Delete folder",
+    "refresh": "Refresh",
+    "mark_all_confirm_title": "Mark all folders as read",
+    "mark_all_confirm_message": "Mark every unread message in your personal account as read?",
+    "delete_confirm_title": "Delete folder",
+    "delete_confirm_message": "Permanently delete the folder \"{name}\"? This action cannot be undone.",
+    "prompt_new_subfolder": "New subfolder name:",
+    "prompt_new_folder": "New folder name:",
+    "prompt_rename": "Rename folder to:",
+    "toast_marked_read": "Folder marked as read",
+    "toast_marked_read_count": "Marked {count, plural, one {1 message} other {# messages}} as read",
+    "toast_already_read": "No unread messages",
+    "toast_marked_all_read": "All folders marked as read",
+    "toast_emptied": "Folder emptied",
+    "toast_folder_created": "Folder created",
+    "toast_folder_renamed": "Folder renamed",
+    "toast_folder_deleted": "Folder deleted",
+    "toast_error_mark_read": "Failed to mark as read",
+    "toast_error_empty": "Failed to empty folder",
+    "toast_error_create": "Failed to create folder",
+    "toast_error_rename": "Failed to rename folder",
+    "toast_error_delete": "Failed to delete folder",
+    "toast_error_delete_has_children": "Folder has subfolders. Remove them first.",
+    "toast_error_delete_has_email": "Folder is not empty. Empty it first."
+  },
   "shortcuts": {
     "title": "Īsinājumtaustiņi",
     "tip": "Nospiediet ? jebkurā laikā, lai skatītu palīdzību",

locales/nl/common.json

@@ -1590,6 +1590,40 @@
     "items_selected": "{count} e-mails geselecteerd",
     "edit_draft": "Concept bewerken"
   },
+  "mailbox_context_menu": {
+    "mark_folder_read": "Mark folder as read",
+    "mark_folder_tree_read": "Mark folder & subfolders as read",
+    "mark_all_folders_read": "Mark all folders as read",
+    "new_subfolder": "New subfolder...",
+    "new_folder": "New folder...",
+    "rename": "Rename...",
+    "empty_folder": "Empty folder",
+    "empty_folder_generic": "Empty folder",
+    "delete_folder": "Delete folder",
+    "refresh": "Refresh",
+    "mark_all_confirm_title": "Mark all folders as read",
+    "mark_all_confirm_message": "Mark every unread message in your personal account as read?",
+    "delete_confirm_title": "Delete folder",
+    "delete_confirm_message": "Permanently delete the folder \"{name}\"? This action cannot be undone.",
+    "prompt_new_subfolder": "New subfolder name:",
+    "prompt_new_folder": "New folder name:",
+    "prompt_rename": "Rename folder to:",
+    "toast_marked_read": "Folder marked as read",
+    "toast_marked_read_count": "Marked {count, plural, one {1 message} other {# messages}} as read",
+    "toast_already_read": "No unread messages",
+    "toast_marked_all_read": "All folders marked as read",
+    "toast_emptied": "Folder emptied",
+    "toast_folder_created": "Folder created",
+    "toast_folder_renamed": "Folder renamed",
+    "toast_folder_deleted": "Folder deleted",
+    "toast_error_mark_read": "Failed to mark as read",
+    "toast_error_empty": "Failed to empty folder",
+    "toast_error_create": "Failed to create folder",
+    "toast_error_rename": "Failed to rename folder",
+    "toast_error_delete": "Failed to delete folder",
+    "toast_error_delete_has_children": "Folder has subfolders. Remove them first.",
+    "toast_error_delete_has_email": "Folder is not empty. Empty it first."
+  },
   "shortcuts": {
     "title": "Sneltoetsen",
     "tip": "Druk op ? om deze hulp te tonen",

locales/pl/common.json

@@ -1590,6 +1590,40 @@
     "items_selected": "{count} zaznaczonych wiadomości",
     "edit_draft": "Edytuj szkic"
   },
+  "mailbox_context_menu": {
+    "mark_folder_read": "Mark folder as read",
+    "mark_folder_tree_read": "Mark folder & subfolders as read",
+    "mark_all_folders_read": "Mark all folders as read",
+    "new_subfolder": "New subfolder...",
+    "new_folder": "New folder...",
+    "rename": "Rename...",
+    "empty_folder": "Empty folder",
+    "empty_folder_generic": "Empty folder",
+    "delete_folder": "Delete folder",
+    "refresh": "Refresh",
+    "mark_all_confirm_title": "Mark all folders as read",
+    "mark_all_confirm_message": "Mark every unread message in your personal account as read?",
+    "delete_confirm_title": "Delete folder",
+    "delete_confirm_message": "Permanently delete the folder \"{name}\"? This action cannot be undone.",
+    "prompt_new_subfolder": "New subfolder name:",
+    "prompt_new_folder": "New folder name:",
+    "prompt_rename": "Rename folder to:",
+    "toast_marked_read": "Folder marked as read",
+    "toast_marked_read_count": "Marked {count, plural, one {1 message} other {# messages}} as read",
+    "toast_already_read": "No unread messages",
+    "toast_marked_all_read": "All folders marked as read",
+    "toast_emptied": "Folder emptied",
+    "toast_folder_created": "Folder created",
+    "toast_folder_renamed": "Folder renamed",
+    "toast_folder_deleted": "Folder deleted",
+    "toast_error_mark_read": "Failed to mark as read",
+    "toast_error_empty": "Failed to empty folder",
+    "toast_error_create": "Failed to create folder",
+    "toast_error_rename": "Failed to rename folder",
+    "toast_error_delete": "Failed to delete folder",
+    "toast_error_delete_has_children": "Folder has subfolders. Remove them first.",
+    "toast_error_delete_has_email": "Folder is not empty. Empty it first."
+  },
   "shortcuts": {
     "title": "Skróty klawiszowe",
     "tip": "Naciśnij ? w dowolnym momencie, aby wyświetlić tę pomoc",

locales/pt/common.json

@@ -1590,6 +1590,40 @@
     "items_selected": "{count} e-mails selecionados",
     "edit_draft": "Editar rascunho"
   },
+  "mailbox_context_menu": {
+    "mark_folder_read": "Mark folder as read",
+    "mark_folder_tree_read": "Mark folder & subfolders as read",
+    "mark_all_folders_read": "Mark all folders as read",
+    "new_subfolder": "New subfolder...",
+    "new_folder": "New folder...",
+    "rename": "Rename...",
+    "empty_folder": "Empty folder",
+    "empty_folder_generic": "Empty folder",
+    "delete_folder": "Delete folder",
+    "refresh": "Refresh",
+    "mark_all_confirm_title": "Mark all folders as read",
+    "mark_all_confirm_message": "Mark every unread message in your personal account as read?",
+    "delete_confirm_title": "Delete folder",
+    "delete_confirm_message": "Permanently delete the folder \"{name}\"? This action cannot be undone.",
+    "prompt_new_subfolder": "New subfolder name:",
+    "prompt_new_folder": "New folder name:",
+    "prompt_rename": "Rename folder to:",
+    "toast_marked_read": "Folder marked as read",
+    "toast_marked_read_count": "Marked {count, plural, one {1 message} other {# messages}} as read",
+    "toast_already_read": "No unread messages",
+    "toast_marked_all_read": "All folders marked as read",
+    "toast_emptied": "Folder emptied",
+    "toast_folder_created": "Folder created",
+    "toast_folder_renamed": "Folder renamed",
+    "toast_folder_deleted": "Folder deleted",
+    "toast_error_mark_read": "Failed to mark as read",
+    "toast_error_empty": "Failed to empty folder",
+    "toast_error_create": "Failed to create folder",
+    "toast_error_rename": "Failed to rename folder",
+    "toast_error_delete": "Failed to delete folder",
+    "toast_error_delete_has_children": "Folder has subfolders. Remove them first.",
+    "toast_error_delete_has_email": "Folder is not empty. Empty it first."
+  },
   "shortcuts": {
     "title": "Atalhos de Teclado",
     "tip": "Pressione ? a qualquer momento para mostrar esta ajuda",

locales/ru/common.json

@@ -1590,6 +1590,40 @@
     "items_selected": "{count} писем выбрано",
     "edit_draft": "Редактировать черновик"
   },
+  "mailbox_context_menu": {
+    "mark_folder_read": "Mark folder as read",
+    "mark_folder_tree_read": "Mark folder & subfolders as read",
+    "mark_all_folders_read": "Mark all folders as read",
+    "new_subfolder": "New subfolder...",
+    "new_folder": "New folder...",
+    "rename": "Rename...",
+    "empty_folder": "Empty folder",
+    "empty_folder_generic": "Empty folder",
+    "delete_folder": "Delete folder",
+    "refresh": "Refresh",
+    "mark_all_confirm_title": "Mark all folders as read",
+    "mark_all_confirm_message": "Mark every unread message in your personal account as read?",
+    "delete_confirm_title": "Delete folder",
+    "delete_confirm_message": "Permanently delete the folder \"{name}\"? This action cannot be undone.",
+    "prompt_new_subfolder": "New subfolder name:",
+    "prompt_new_folder": "New folder name:",
+    "prompt_rename": "Rename folder to:",
+    "toast_marked_read": "Folder marked as read",
+    "toast_marked_read_count": "Marked {count, plural, one {1 message} other {# messages}} as read",
+    "toast_already_read": "No unread messages",
+    "toast_marked_all_read": "All folders marked as read",
+    "toast_emptied": "Folder emptied",
+    "toast_folder_created": "Folder created",
+    "toast_folder_renamed": "Folder renamed",
+    "toast_folder_deleted": "Folder deleted",
+    "toast_error_mark_read": "Failed to mark as read",
+    "toast_error_empty": "Failed to empty folder",
+    "toast_error_create": "Failed to create folder",
+    "toast_error_rename": "Failed to rename folder",
+    "toast_error_delete": "Failed to delete folder",
+    "toast_error_delete_has_children": "Folder has subfolders. Remove them first.",
+    "toast_error_delete_has_email": "Folder is not empty. Empty it first."
+  },
   "shortcuts": {
     "title": "Сочетания клавиш",
     "tip": "Нажмите ? в любое время для отображения справки",

locales/uk/common.json

@@ -1590,6 +1590,40 @@
     "items_selected": "Вибрано електронних листів: {count}",
     "edit_draft": "Редагувати чернетку"
   },
+  "mailbox_context_menu": {
+    "mark_folder_read": "Mark folder as read",
+    "mark_folder_tree_read": "Mark folder & subfolders as read",
+    "mark_all_folders_read": "Mark all folders as read",
+    "new_subfolder": "New subfolder...",
+    "new_folder": "New folder...",
+    "rename": "Rename...",
+    "empty_folder": "Empty folder",
+    "empty_folder_generic": "Empty folder",
+    "delete_folder": "Delete folder",
+    "refresh": "Refresh",
+    "mark_all_confirm_title": "Mark all folders as read",
+    "mark_all_confirm_message": "Mark every unread message in your personal account as read?",
+    "delete_confirm_title": "Delete folder",
+    "delete_confirm_message": "Permanently delete the folder \"{name}\"? This action cannot be undone.",
+    "prompt_new_subfolder": "New subfolder name:",
+    "prompt_new_folder": "New folder name:",
+    "prompt_rename": "Rename folder to:",
+    "toast_marked_read": "Folder marked as read",
+    "toast_marked_read_count": "Marked {count, plural, one {1 message} other {# messages}} as read",
+    "toast_already_read": "No unread messages",
+    "toast_marked_all_read": "All folders marked as read",
+    "toast_emptied": "Folder emptied",
+    "toast_folder_created": "Folder created",
+    "toast_folder_renamed": "Folder renamed",
+    "toast_folder_deleted": "Folder deleted",
+    "toast_error_mark_read": "Failed to mark as read",
+    "toast_error_empty": "Failed to empty folder",
+    "toast_error_create": "Failed to create folder",
+    "toast_error_rename": "Failed to rename folder",
+    "toast_error_delete": "Failed to delete folder",
+    "toast_error_delete_has_children": "Folder has subfolders. Remove them first.",
+    "toast_error_delete_has_email": "Folder is not empty. Empty it first."
+  },
   "shortcuts": {
     "title": "Комбінації клавіш",
     "tip": "Натисніть ? у будь-який час, щоб показати цю допомогу",

locales/zh/common.json

@@ -1590,6 +1590,40 @@
     "items_selected": "已选择 {count} 封邮件",
     "edit_draft": "编辑草稿"
   },
+  "mailbox_context_menu": {
+    "mark_folder_read": "Mark folder as read",
+    "mark_folder_tree_read": "Mark folder & subfolders as read",
+    "mark_all_folders_read": "Mark all folders as read",
+    "new_subfolder": "New subfolder...",
+    "new_folder": "New folder...",
+    "rename": "Rename...",
+    "empty_folder": "Empty folder",
+    "empty_folder_generic": "Empty folder",
+    "delete_folder": "Delete folder",
+    "refresh": "Refresh",
+    "mark_all_confirm_title": "Mark all folders as read",
+    "mark_all_confirm_message": "Mark every unread message in your personal account as read?",
+    "delete_confirm_title": "Delete folder",
+    "delete_confirm_message": "Permanently delete the folder \"{name}\"? This action cannot be undone.",
+    "prompt_new_subfolder": "New subfolder name:",
+    "prompt_new_folder": "New folder name:",
+    "prompt_rename": "Rename folder to:",
+    "toast_marked_read": "Folder marked as read",
+    "toast_marked_read_count": "Marked {count, plural, one {1 message} other {# messages}} as read",
+    "toast_already_read": "No unread messages",
+    "toast_marked_all_read": "All folders marked as read",
+    "toast_emptied": "Folder emptied",
+    "toast_folder_created": "Folder created",
+    "toast_folder_renamed": "Folder renamed",
+    "toast_folder_deleted": "Folder deleted",
+    "toast_error_mark_read": "Failed to mark as read",
+    "toast_error_empty": "Failed to empty folder",
+    "toast_error_create": "Failed to create folder",
+    "toast_error_rename": "Failed to rename folder",
+    "toast_error_delete": "Failed to delete folder",
+    "toast_error_delete_has_children": "Folder has subfolders. Remove them first.",
+    "toast_error_delete_has_email": "Folder is not empty. Empty it first."
+  },
   "shortcuts": {
     "title": "键盘快捷键",
     "tip": "按？随时显示此帮助",

stores/email-store.ts

@@ -118,6 +118,7 @@ interface EmailStore {
   deleteMailbox: (client: IJMAPClient, mailboxId: string) => Promise<void>;
   setMailboxRole: (client: IJMAPClient, mailboxId: string, role: string | null) => Promise<void>;
   emptyMailbox: (client: IJMAPClient, mailboxId: string) => Promise<void>;
+  markMailboxAsRead: (client: IJMAPClient, mailboxId: string) => Promise<number>;
 
   // Unified mailbox operations
   fetchUnifiedEmails: (accounts: UnifiedAccountClient[], role: UnifiedMailboxRole) => Promise<void>;
@@ -1750,6 +1751,39 @@ export const useEmailStore = create<EmailStore>((set, get) => ({
     }
   },
 
+  markMailboxAsRead: async (client, mailboxId) => {
+    try {
+      const mailbox = get().mailboxes.find(mb => mb.id === mailboxId);
+      const accountId = mailbox?.isShared ? mailbox.accountId : undefined;
+      const jmapMailboxId = mailbox?.originalId || mailboxId;
+
+      const count = await client.markMailboxAsRead(jmapMailboxId, accountId);
+
+      // Update local state: mark all emails currently visible in this mailbox as read,
+      // and zero-out the mailbox unread counter.
+      set((state) => ({
+        emails: state.emails.map(e =>
+          e.mailboxIds && e.mailboxIds[mailboxId]
+            ? { ...e, keywords: { ...e.keywords, $seen: true } }
+            : e
+        ),
+        selectedEmail: state.selectedEmail && state.selectedEmail.mailboxIds?.[mailboxId]
+          ? { ...state.selectedEmail, keywords: { ...state.selectedEmail.keywords, $seen: true } }
+          : state.selectedEmail,
+        mailboxes: state.mailboxes.map(mb =>
+          mb.id === mailboxId
+            ? { ...mb, unreadEmails: 0, unreadThreads: 0 }
+            : mb
+        ),
+      }));
+
+      return count;
+    } catch (error) {
+      set({ error: error instanceof Error ? error.message : 'Failed to mark folder as read' });
+      throw error;
+    }
+  },
+
   // Unified mailbox operations
   fetchUnifiedEmails: async (accounts, role) => {
     set({