diff --git a/components/email/email-list.tsx b/components/email/email-list.tsx
index ac3b6e062..b818c84d0 100644
--- a/components/email/email-list.tsx
+++ b/components/email/email-list.tsx
@@ -34,7 +34,7 @@ import { useContextMenu } from "@/hooks/use-context-menu";
 import { useConfirmDialog } from "@/hooks/use-confirm-dialog";
 import { useTranslations } from "next-intl";
 import { toast } from "@/stores/toast-store";
-import { runBatchEmailAction, toastWithUndo, undoLabels, undoMoveAction } from "@/lib/email-action-toast";
+import { markSelectionReadWithUndo, runBatchEmailAction, setSelectionTagWithUndo, toastWithUndo, undoLabels, undoMoveAction } from "@/lib/email-action-toast";
 import { useVirtualizer } from "@tanstack/react-virtual";
 import { TagDisplayContext, useMeasuredTagDisplay } from "@/hooks/use-tag-display";
 import { SearchChips } from "@/components/search/search-chips";
@@ -193,8 +193,6 @@ export function EmailList({
     selectedEmailKeys,
     selectAllEmails: _selectAllEmails,
     clearSelection,
-    batchMarkAsRead,
-    batchSetTag,
     batchDelete,
     batchMoveToMailbox,
     batchArchive,
@@ -225,8 +223,6 @@ export function EmailList({
     selectedEmailKeys: state.selectedEmailKeys,
     selectAllEmails: state.selectAllEmails,
     clearSelection: state.clearSelection,
-    batchMarkAsRead: state.batchMarkAsRead,
-    batchSetTag: state.batchSetTag,
     batchDelete: state.batchDelete,
     batchMoveToMailbox: state.batchMoveToMailbox,
     batchArchive: state.batchArchive,
@@ -564,8 +560,13 @@ export function EmailList({
 
   // The store reports a refused message (a read-only shared folder) through
   // its error; the rest of the selection is marked.
+  // A toast with Undo (and Ctrl+Z) puts the messages back as they were.
   const markSelectionRead = (read: boolean) => client
-    ? runBatchEmailAction(() => batchMarkAsRead(client, read), { error: tNotifications('error_updating') })
+    ? markSelectionReadWithUndo(client, read, {
+        success: tNotifications(read ? 'emails_marked_read' : 'emails_marked_unread', { count: selectedEmailKeys.size }),
+        error: tNotifications('error_updating'),
+        labels: undo,
+      })
     : Promise.resolve();
 
   const handleBatchMarkAsRead = async (read: boolean) => {
@@ -598,7 +599,11 @@ export function EmailList({
   const handleBatchToggleTag = async (tagId: string) => {
     if (!client) return;
     try {
-      await batchSetTag(client, tagId, !selectionTags.all.includes(tagId));
+      const add = !selectionTags.all.includes(tagId);
+      await setSelectionTagWithUndo(client, tagId, add, {
+        describe: (count) => tNotifications(add ? 'emails_tagged' : 'tag_removed_count', { count }),
+        labels: undo,
+      });
     } catch (error) {
       console.error("Failed to tag emails:", error);
       toast.error(tNotifications('error_updating'));
diff --git a/components/email/mv-list-toolbar.tsx b/components/email/mv-list-toolbar.tsx
index 14cdc6f58..d66eb9b71 100644
--- a/components/email/mv-list-toolbar.tsx
+++ b/components/email/mv-list-toolbar.tsx
@@ -24,7 +24,7 @@ import { useAuthStore } from "@/stores/auth-store";
 import { useShallow } from "zustand/react/shallow";
 import { useEmailStore, ArchiveMailboxNotFoundError, resolveSelectedEmails, bulkDeleteIsPermanent, shouldConfirmBulkDelete, removalFolder, canRemoveFromFolder, restoreBatchesForSelection , type CrossAccountMoveReceipt } from "@/stores/email-store";
 import { useRemoveFromFolder } from "@/hooks/use-remove-from-folder";
-import { runBatchEmailAction, toastWithUndo, undoLabels, undoMoveAction } from "@/lib/email-action-toast";
+import { markSelectionReadWithUndo, runBatchEmailAction, setSelectionTagWithUndo, toastWithUndo, undoLabels, undoMoveAction } from "@/lib/email-action-toast";
 import { toast } from "@/stores/toast-store";
 import { useConfirmDialog } from "@/hooks/use-confirm-dialog";
 import { useContextMenu } from "@/hooks/use-context-menu";
@@ -130,11 +130,9 @@ export function MvListToolbar({
     clearSelection,
     batchArchive,
     batchDelete,
-    batchMarkAsRead,
     batchMarkAsSpam,
     batchUndoSpam,
     batchMoveToMailbox,
-    batchSetTag,
     isUnifiedView,
     unifiedRole,
   } = useEmailStore(useShallow((state) => ({
@@ -148,11 +146,9 @@ export function MvListToolbar({
     clearSelection: state.clearSelection,
     batchArchive: state.batchArchive,
     batchDelete: state.batchDelete,
-    batchMarkAsRead: state.batchMarkAsRead,
     batchMarkAsSpam: state.batchMarkAsSpam,
     batchUndoSpam: state.batchUndoSpam,
     batchMoveToMailbox: state.batchMoveToMailbox,
-    batchSetTag: state.batchSetTag,
     isUnifiedView: state.isUnifiedView,
     unifiedRole: state.unifiedRole,
   })));
@@ -223,6 +219,14 @@ export function MvListToolbar({
     }
   };
 
+  // With a toast that offers Undo (and Ctrl+Z), as in the default toolbar.
+  const markSelectionRead = (activeClient: NonNullable<typeof client>, read: boolean) =>
+    markSelectionReadWithUndo(activeClient, read, {
+      success: tNotifications(read ? "emails_marked_read" : "emails_marked_unread", { count: selectionCount }),
+      error: tNotifications("error_updating"),
+      labels: undo,
+    });
+
   const handleSelectAllToggle = () => {
     if (disabled) return;
     if (hasSelection) {
@@ -347,7 +351,12 @@ export function MvListToolbar({
   const handleToggleTag = (tagId: string) => {
     const add = !appliedTags.includes(tagId);
     void run(async () => {
-      if (client) await batchSetTag(client, tagId, add);
+      if (client) {
+        await setSelectionTagWithUndo(client, tagId, add, {
+          describe: (count) => tNotifications(add ? "emails_tagged" : "tag_removed_count", { count }),
+          labels: undo,
+        });
+      }
     });
   };
 
@@ -509,13 +518,13 @@ export function MvListToolbar({
           <ToolbarButton
             icon={MailOpen}
             label={tBatch("mark_read")}
-            onClick={() => run(async () => { if (client) await batchMarkAsRead(client, true); })}
+            onClick={() => run(async () => { if (client) await markSelectionRead(client, true); })}
             disabled={isProcessing}
           />
           <ToolbarButton
             icon={Mail}
             label={tBatch("mark_unread")}
-            onClick={() => run(async () => { if (client) await batchMarkAsRead(client, false); })}
+            onClick={() => run(async () => { if (client) await markSelectionRead(client, false); })}
             disabled={isProcessing}
           />
           <div className="w-px h-6 bg-border mx-1 shrink-0" />
diff --git a/components/mail/mail-app.tsx b/components/mail/mail-app.tsx
index ef9a3a907..b63d2de23 100644
--- a/components/mail/mail-app.tsx
+++ b/components/mail/mail-app.tsx
@@ -47,7 +47,7 @@ import { formatScheduledSendAt } from "@/lib/scheduled-send-label";
 import { formatRejectedRecipients, RescheduleRestoredError } from "@/lib/jmap/client";
 import { subscribePushStateChanges } from "@/lib/push-events";
 import { createMailPushListener } from "@/lib/mail-push-listener";
-import { runBatchEmailAction, toastWithUndo, undoLabels, undoMoveAction } from "@/lib/email-action-toast";
+import { keywordRestorePoints, markSelectionReadWithUndo, recordQuietUndo, runBatchEmailAction, toastWithUndo, undoKeywordAction, undoLabels, undoMoveAction } from "@/lib/email-action-toast";
 import { MailboxShareDialog } from "@/components/layout/mailbox-share-dialog";
 import { ShareNotificationToaster } from "@/components/layout/share-notification-toaster";
 import { CalendarEventNotificationToaster } from "@/components/layout/calendar-event-notification-toaster";
@@ -492,7 +492,6 @@ export function MailApp({ linkSegments: routeSegments }: MailAppProps = {}) {
     deleteMailbox,
     batchDelete,
     batchArchive,
-    batchMarkAsRead,
     batchMarkAsSpam,
     batchUndoSpam,
     accountMailboxes,
@@ -582,7 +581,6 @@ export function MailApp({ linkSegments: routeSegments }: MailAppProps = {}) {
     deleteMailbox: state.deleteMailbox,
     batchDelete: state.batchDelete,
     batchArchive: state.batchArchive,
-    batchMarkAsRead: state.batchMarkAsRead,
     batchMarkAsSpam: state.batchMarkAsSpam,
     batchUndoSpam: state.batchUndoSpam,
     accountMailboxes: state.accountMailboxes,
@@ -871,6 +869,29 @@ export function MailApp({ linkSegments: routeSegments }: MailAppProps = {}) {
     toast.error(t('notifications.error_updating'));
   };
 
+  // A message the user marks read or unread, or stars: no toast, but Ctrl+Z
+  // puts it back and a screen reader hears what happened. Not for the
+  // automatic mark-as-read on opening a message.
+  const markReadWithUndo = async (email: Email, read: boolean): Promise<void> => {
+    if (!client) return;
+    const points = keywordRestorePoints([email], ['$seen'], { $seen: read });
+    if (!(await markAsRead(client, email.id, read, emailKeyFor(email)))) return;
+    recordQuietUndo(
+      t(read ? 'notifications.email_marked_read' : 'notifications.email_marked_unread'),
+      undoKeywordAction(client, points, undo),
+    );
+  };
+  const toggleStarWithUndo = async (email: Email): Promise<void> => {
+    if (!client) return;
+    const wasStarred = email.keywords?.$flagged === true;
+    const points = keywordRestorePoints([email], ['$flagged']);
+    if (!(await toggleStar(client, email.id, emailKeyFor(email)))) return;
+    recordQuietUndo(
+      t(wasStarred ? 'notifications.email_unstarred' : 'notifications.email_starred'),
+      undoKeywordAction(client, points, undo),
+    );
+  };
+
   // Keyboard shortcuts handlers
   const keyboardHandlers = useMemo(() => ({
     onNextEmail: () => {
@@ -989,18 +1010,26 @@ export function MailApp({ linkSegments: routeSegments }: MailAppProps = {}) {
       if (isScheduledView) return;
       if (!client) return;
       if (shortcutsTargetSelection) {
-        await runBatchEmailAction(() => batchMarkAsRead(client, false), { error: t('notifications.error_updating') });
+        await markSelectionReadWithUndo(client, false, {
+          success: t('notifications.emails_marked_unread', { count: selectedEmailKeys.size }),
+          error: t('notifications.error_updating'),
+          labels: undo,
+        });
       } else if (selectedEmail) {
-        await markAsRead(client, selectedEmail.id, false, emailKeyFor(selectedEmail)).catch(toastUpdateFailure);
+        await markReadWithUndo(selectedEmail, false).catch(toastUpdateFailure);
       }
     },
     onMarkAsRead: async () => {
       if (isScheduledView) return;
       if (!client) return;
       if (shortcutsTargetSelection) {
-        await runBatchEmailAction(() => batchMarkAsRead(client, true), { error: t('notifications.error_updating') });
+        await markSelectionReadWithUndo(client, true, {
+          success: t('notifications.emails_marked_read', { count: selectedEmailKeys.size }),
+          error: t('notifications.error_updating'),
+          labels: undo,
+        });
       } else if (selectedEmail) {
-        await markAsRead(client, selectedEmail.id, true, emailKeyFor(selectedEmail)).catch(toastUpdateFailure);
+        await markReadWithUndo(selectedEmail, true).catch(toastUpdateFailure);
       }
     },
     onToggleSpam: async () => {
@@ -3089,7 +3118,7 @@ export function MailApp({ linkSegments: routeSegments }: MailAppProps = {}) {
     if (!client || !selectedEmail) return;
 
     try {
-      await toggleStar(client, selectedEmail.id, emailKeyFor(selectedEmail));
+      await toggleStarWithUndo(selectedEmail);
     } catch (error) {
       console.error("Failed to toggle star:", error);
       toast.error(t('notifications.error_updating'));
@@ -3190,7 +3219,13 @@ export function MailApp({ linkSegments: routeSegments }: MailAppProps = {}) {
       // call site covered only the unified view, so a tag set on a directly
       // selected shared folder was written to the reaching account and silently
       // dropped by the server. (#281)
-      await patchEmailKeywords(client, emailId, changes, emailKeyFor(email));
+      const names = Object.keys(changes);
+      const points = keywordRestorePoints([email], names);
+      if (await patchEmailKeywords(client, emailId, changes, emailKeyFor(email)) && names.length > 0) {
+        // Ctrl+Z puts the tags back as they were.
+        const added = Object.values(changes).some(Boolean);
+        recordQuietUndo(t(added ? 'notifications.email_tagged' : 'notifications.tag_removed'), undoKeywordAction(client, points, undo));
+      }
 
       // Refresh tag counts
       fetchTagCounts(client);
@@ -4280,12 +4315,12 @@ export function MailApp({ linkSegments: routeSegments }: MailAppProps = {}) {
     {
       id: 'mark-unread', label: t('context_menu.mark_unread'), icon: Mail, shortcut: 'u',
       when: () => !!paletteEmail?.keywords?.$seen,
-      run: () => { if (client && paletteEmail) void markAsRead(client, paletteEmail.id, false, emailKeyFor(paletteEmail)).catch(toastUpdateFailure); },
+      run: () => { if (client && paletteEmail) void markReadWithUndo(paletteEmail, false).catch(toastUpdateFailure); },
     },
     {
       id: 'mark-read', label: t('context_menu.mark_read'), icon: MailOpen, shortcut: 'Shift + I',
       when: () => !!paletteEmail && !paletteEmail.keywords?.$seen,
-      run: () => { if (client && paletteEmail) void markAsRead(client, paletteEmail.id, true, emailKeyFor(paletteEmail)).catch(toastUpdateFailure); },
+      run: () => { if (client && paletteEmail) void markReadWithUndo(paletteEmail, true).catch(toastUpdateFailure); },
     },
     {
       id: 'spam', label: conversationInJunk ? t('context_menu.not_spam') : t('context_menu.mark_as_spam'),
@@ -5245,14 +5280,10 @@ export function MailApp({ linkSegments: routeSegments }: MailAppProps = {}) {
                   });
                 }}
                 onMarkAsRead={async (email, read) => {
-                  if (client) {
-                    await markAsRead(client, email.id, read, emailKeyFor(email)).catch(toastUpdateFailure);
-                  }
+                  await markReadWithUndo(email, read).catch(toastUpdateFailure);
                 }}
                 onToggleStar={async (email) => {
-                  if (client) {
-                    await toggleStar(client, email.id, emailKeyFor(email)).catch(toastUpdateFailure);
-                  }
+                  await toggleStarWithUndo(email).catch(toastUpdateFailure);
                 }}
                 onTogglePinned={async (email) => {
                   await handleTogglePinned(email);
@@ -5427,11 +5458,11 @@ export function MailApp({ linkSegments: routeSegments }: MailAppProps = {}) {
                     onMoveToMailbox: (mailboxId: string) => leaving(() => handleMoveToMailbox(target.id, mailboxId, emailKeyFor(target)))(),
                     onForwardAsAttachment: () => void handleForwardAsAttachment(target),
                     onMarkAsRead: client ? (read: boolean) => {
-                      const run = () => markAsRead(client, target.id, read, emailKeyFor(target)).catch(toastUpdateFailure);
+                      const run = () => markReadWithUndo(target, read).catch(toastUpdateFailure);
                       // Marked unread, the conversation is done with for now.
                       if (read) void run(); else leaving(run)();
                     } : undefined,
-                    onToggleStar: client ? () => void toggleStar(client, target.id, emailKeyFor(target)).catch(toastUpdateFailure) : undefined,
+                    onToggleStar: client ? () => void toggleStarWithUndo(target).catch(toastUpdateFailure) : undefined,
                     onTogglePinned: () => void handleTogglePinned(target),
                     onSetTag: (tagId: string | null) => void handleSetTag(target.id, tagId, emailKeyFor(target)),
                     onMarkAsSpam: conversationSpamApplicable && !conversationInJunk ? leaving(() => handleMarkAsSpam(target)) : undefined,
@@ -5470,6 +5501,10 @@ export function MailApp({ linkSegments: routeSegments }: MailAppProps = {}) {
                     onMarkAsRead={async (emailId, read, opts) => {
                       if (client) {
                         const emailKey = selectedEmail?.id === emailId ? emailKeyFor(selectedEmail) : undefined;
+                        // Asked for (not on opening): Ctrl+Z can put it back.
+                        const points = !opts?.automatic && selectedEmail?.id === emailId
+                          ? keywordRestorePoints([selectedEmail], ['$seen'], { $seen: read })
+                          : [];
                         try {
                           await markAsRead(client, emailId, read, emailKey);
                         } catch (error) {
@@ -5482,6 +5517,12 @@ export function MailApp({ linkSegments: routeSegments }: MailAppProps = {}) {
                         const nowRead = !!useEmailStore.getState().emails
                           .find((e) => (emailKey ? emailKeyFor(e) === emailKey : e.id === emailId))?.keywords?.$seen;
                         if (nowRead !== read) return; // a plugin stopped it
+                        if (!opts?.automatic) {
+                          recordQuietUndo(
+                            t(read ? 'notifications.email_marked_read' : 'notifications.email_marked_unread'),
+                            undoKeywordAction(client, points, undo),
+                          );
+                        }
                         // Marking the open message unread returns to the list
                         // (Gmail-style, gated on returnToListAfterAction). Staying
                         // in the reading pane would just re-mark it read on view.
diff --git a/lib/__tests__/email-action-keyword-undo.test.ts b/lib/__tests__/email-action-keyword-undo.test.ts
new file mode 100644
index 000000000..a6e44811f
--- /dev/null
+++ b/lib/__tests__/email-action-keyword-undo.test.ts
@@ -0,0 +1,90 @@
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+import {
+  keywordRestorePoints, markSelectionReadWithUndo, recordQuietUndo, setSelectionTagWithUndo, undoKeywordAction,
+  type UndoLabels,
+} from '../email-action-toast';
+import { clearUndoHistory, undoHistory, undoLatest } from '../undo-history';
+import { useEmailStore } from '@/stores/email-store';
+import { useToastStore } from '@/stores/toast-store';
+import type { Email } from '@/lib/jmap/types';
+import type { IJMAPClient } from '@/lib/jmap/client-interface';
+
+const labels: UndoLabels = { undo: 'Undo', done: 'Moved back', failed: "Couldn't undo", undone: 'Undone' };
+const client = {} as IJMAPClient;
+
+const email = (id: string, keywords: Record<string, boolean> = {}) => ({ id, keywords, mailboxIds: { inbox: true } }) as unknown as Email;
+
+let patchEmailKeywords: ReturnType<typeof vi.fn>;
+
+beforeEach(() => {
+  clearUndoHistory();
+  useToastStore.setState({ toasts: [] });
+  patchEmailKeywords = vi.fn().mockResolvedValue(true);
+  useEmailStore.setState({
+    emails: [email('read', { $seen: true }), email('unread'), email('tagged', { '$label:red': true })],
+    threadEmailsCache: new Map(),
+    selectedEmailKeys: new Set(['read', 'unread']),
+    error: null,
+    patchEmailKeywords: patchEmailKeywords as never,
+  });
+});
+
+describe('keyword restore points', () => {
+  it('keeps the values the keywords have now, leaving out messages already in the wanted state', () => {
+    const points = keywordRestorePoints(useEmailStore.getState().emails, ['$seen'], { $seen: true });
+    expect(points).toEqual([
+      { id: 'unread', key: 'unread', changes: { $seen: false } },
+      { id: 'tagged', key: 'tagged', changes: { $seen: false } },
+    ]);
+  });
+});
+
+describe('undo for read, flag and tag changes', () => {
+  it('marks the selection read with a toast whose Undo puts back only what changed', async () => {
+    const batchMarkAsRead = vi.fn().mockResolvedValue(true);
+    useEmailStore.setState({ batchMarkAsRead: batchMarkAsRead as never });
+
+    await markSelectionReadWithUndo(client, true, { success: '2 emails marked as read', error: 'Failed', labels });
+
+    expect(batchMarkAsRead).toHaveBeenCalledWith(client, true);
+    const shown = useToastStore.getState().toasts.at(-1)!;
+    expect(shown.title).toBe('2 emails marked as read');
+    expect(shown.action?.label).toBe('Undo');
+
+    // Ctrl+Z (the history) or the toast: the same Undo.
+    undoLatest();
+    await vi.waitFor(() => expect(patchEmailKeywords).toHaveBeenCalledTimes(1));
+    expect(patchEmailKeywords).toHaveBeenCalledWith(client, 'unread', { $seen: false }, 'unread');
+    await vi.waitFor(() => expect(useToastStore.getState().toasts.map((t) => t.title)).toContain('Undone'));
+  });
+
+  it('keeps an Undo for a tag put on the selection, without a toast', async () => {
+    const batchSetTag = vi.fn().mockResolvedValue(true);
+    useEmailStore.setState({ batchSetTag: batchSetTag as never, selectedEmailKeys: new Set(['unread', 'tagged']) });
+
+    await setSelectionTagWithUndo(client, 'red', true, { describe: (n) => `${n} emails tagged`, labels });
+
+    expect(batchSetTag).toHaveBeenCalledWith(client, 'red', true);
+    expect(useToastStore.getState().toasts).toHaveLength(0);
+    expect(undoHistory().map((e) => e.label)).toEqual(['1 emails tagged']);
+
+    undoLatest();
+    await vi.waitFor(() => expect(patchEmailKeywords).toHaveBeenCalledTimes(1));
+    // Only the message that got the tag loses it again.
+    expect(patchEmailKeywords).toHaveBeenCalledWith(client, 'unread', { '$label:red': false, '$color:red': false }, 'unread');
+  });
+
+  it('keeps no Undo when a plugin stopped the tag change', async () => {
+    useEmailStore.setState({ batchSetTag: vi.fn().mockResolvedValue(false) as never });
+    await setSelectionTagWithUndo(client, 'red', true, { describe: () => 'tagged', labels });
+    expect(undoHistory()).toHaveLength(0);
+  });
+
+  it('says when the undo failed', async () => {
+    patchEmailKeywords.mockRejectedValue(new Error('read-only'));
+    vi.spyOn(console, 'error').mockImplementation(() => {});
+    recordQuietUndo('Email starred', undoKeywordAction(client, [{ id: 'x', key: 'x', changes: { $flagged: false } }], labels));
+    undoLatest();
+    await vi.waitFor(() => expect(useToastStore.getState().toasts.map((t) => t.title)).toContain("Couldn't undo"));
+  });
+});
diff --git a/lib/email-action-toast.ts b/lib/email-action-toast.ts
index 7e66e8fb2..663a3b417 100644
--- a/lib/email-action-toast.ts
+++ b/lib/email-action-toast.ts
@@ -1,9 +1,12 @@
 import { toast } from "@/stores/toast-store";
-import { useEmailStore, type EmailRestoreBatch, type CrossAccountMoveReceipt } from "@/stores/email-store";
+import { useEmailStore, resolveSelectedEmails, type EmailRestoreBatch, type CrossAccountMoveReceipt } from "@/stores/email-store";
 import type { ToastAction } from "@/components/ui/toast";
 import type { IJMAPClient } from "@/lib/jmap/client-interface";
+import type { Email } from "@/lib/jmap/types";
 import { linkUndoToast, recordUndo, runUndo } from "@/lib/undo-history";
 import { formatShortcutCombo } from "@/lib/shortcut-keys";
+import { emailKeyFor, KEYWORD_PREFIX, KEYWORD_PREFIX_LEGACY } from "@/lib/thread-utils";
+import { announce } from "@/lib/announce";
 
 /** How long a toast with Undo stays, so there is time to reach the button. */
 export const UNDO_TOAST_DURATION = 8000;
@@ -15,6 +18,8 @@ export interface UndoLabels {
   failed: string;
   /** "Press Ctrl+Z to undo.", read out after the toast. */
   hint?: string;
+  /** "Undone", after a read, flag or tag change was put back. */
+  undone?: string;
 }
 
 /** An Undo for a toast, with the words a screen reader hears about it. */
@@ -34,9 +39,126 @@ export function undoLabels(t: (key: string, values?: Record<string, string>) =>
     done: t("undo_done"),
     failed: t("undo_failed"),
     hint: t("undo_hint", { keys: undoShortcutLabel() }),
+    undone: t("undone"),
   };
 }
 
+/**
+ * The keywords a read, flag or tag change is about to touch on one message,
+ * with the values they have now, so Undo can put exactly those back.
+ */
+export interface KeywordRestorePoint {
+  id: string;
+  /** emailKeyFor of the row: the id alone can name another account's message. */
+  key: string;
+  changes: Record<string, boolean>;
+}
+
+/**
+ * Restore points for `names` on `emails`, taken before the change. Messages
+ * the change leaves as they are (`target` given: already in that state) are
+ * left out.
+ */
+export function keywordRestorePoints(
+  emails: Email[],
+  names: string[],
+  target?: Record<string, boolean>,
+): KeywordRestorePoint[] {
+  const points: KeywordRestorePoint[] = [];
+  for (const email of emails) {
+    const changes = Object.fromEntries(names.map((name) => [name, email.keywords?.[name] === true]));
+    if (target && Object.entries(target).every(([name, value]) => changes[name] === value)) continue;
+    points.push({ id: email.id, key: emailKeyFor(email), changes });
+  }
+  return points;
+}
+
+/** The two spellings of a tag's keyword. */
+export function tagKeywords(tagId: string): string[] {
+  return [KEYWORD_PREFIX + tagId, KEYWORD_PREFIX_LEGACY + tagId];
+}
+
+/**
+ * Undo for a read, flag or tag change: writes back the keywords the restore
+ * points hold, and nothing else (patchEmailKeywords, routed to each message's
+ * own account by its row key). None when nothing changed.
+ */
+export function undoKeywordAction(
+  client: IJMAPClient | null | undefined,
+  points: KeywordRestorePoint[],
+  labels: UndoLabels,
+): UndoToastAction | undefined {
+  if (!client || points.length === 0) return undefined;
+  return {
+    label: labels.undo,
+    hint: labels.hint,
+    onClick: () => {
+      void (async () => {
+        const { patchEmailKeywords } = useEmailStore.getState();
+        const results = await Promise.allSettled(
+          points.map((p) => patchEmailKeywords(client, p.id, p.changes, p.key)),
+        );
+        const failed = results.find((r): r is PromiseRejectedResult => r.status === "rejected");
+        if (failed) {
+          console.error("Failed to undo:", failed.reason);
+          toast.error(labels.failed);
+        } else {
+          toast.success(labels.undone ?? labels.done);
+        }
+      })();
+    },
+  };
+}
+
+/**
+ * Keeps an Undo for a small change that shows no toast of its own (a star,
+ * a message marked read, a tag): Ctrl+Z reaches it, and a screen reader
+ * hears what happened.
+ */
+export function recordQuietUndo(title: string, undo: UndoToastAction | undefined): void {
+  announce(title);
+  if (undo) recordUndo(title, undo.onClick);
+}
+
+/**
+ * Marks the selection read or unread, with a toast that offers Undo. The
+ * messages the change leaves alone are not put back.
+ */
+export async function markSelectionReadWithUndo(
+  client: IJMAPClient,
+  read: boolean,
+  words: { success: string; error: string; labels: UndoLabels },
+): Promise<void> {
+  const points = keywordRestorePoints(resolveSelectedEmails(useEmailStore.getState()), ["$seen"], { $seen: read });
+  await runBatchEmailAction(() => useEmailStore.getState().batchMarkAsRead(client, read), {
+    success: words.success,
+    error: words.error,
+    undo: undoKeywordAction(client, points, words.labels),
+  });
+}
+
+/**
+ * Puts a tag on the selection or takes it off (batchSetTag; rejects when a
+ * write fails) and keeps an Undo for Ctrl+Z. The selection stays, so several
+ * tags can be changed in a row; a toast for each would pile up, so the
+ * change is only read out.
+ */
+export async function setSelectionTagWithUndo(
+  client: IJMAPClient,
+  tagId: string,
+  add: boolean,
+  words: { describe: (count: number) => string; labels: UndoLabels },
+): Promise<boolean> {
+  const names = tagKeywords(tagId);
+  const points = keywordRestorePoints(resolveSelectedEmails(useEmailStore.getState()), names)
+    .filter((p) => names.some((name) => p.changes[name]) !== add);
+  const done = await useEmailStore.getState().batchSetTag(client, tagId, add);
+  if (done && points.length > 0) {
+    recordQuietUndo(words.describe(points.length), undoKeywordAction(client, points, words.labels));
+  }
+  return done;
+}
+
 /**
  * The toast's Undo for a reversible move (delete to Trash, archive, move,
  * report spam, remove from folder): puts the messages back where `batches`
diff --git a/locales/ar/common.json b/locales/ar/common.json
index 0925fe5e7..158038972 100644
--- a/locales/ar/common.json
+++ b/locales/ar/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "تم حفظ إعدادات الغياب، لكن تعذّر حفظ إعادة التوجيه ومستلمي الرد",
     "nothing_to_undo": "لا يوجد ما يمكن التراجع عنه",
     "undo_hint": "اضغط {keys} للتراجع.",
-    "undone": "تم التراجع"
+    "undone": "تم التراجع",
+    "emails_marked_read": "{count, plural, one {تم تمييز رسالة واحدة كمقروءة} other {تم تمييز # رسائل كمقروءة}}",
+    "emails_marked_unread": "{count, plural, one {تم تمييز رسالة واحدة كغير مقروءة} other {تم تمييز # رسائل كغير مقروءة}}",
+    "tag_removed": "تمت إزالة الوسم",
+    "tag_removed_count": "{count, plural, one {تمت إزالة الوسم من رسالة واحدة} other {تمت إزالة الوسم من # رسائل}}"
   },
   "third_party": {
     "push_needs_relay": "تحتاج الإشعارات الفورية إلى خادم ترحيل تديره مؤسستك، ولم يُعدّ أي خادم. يستمر ظهور البريد الجديد ما دام التطبيق مفتوحًا.",
diff --git a/locales/ca/common.json b/locales/ca/common.json
index 94c77d460..17b2f59e0 100644
--- a/locales/ca/common.json
+++ b/locales/ca/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "S'ha desat la configuració d'absència, però no s'han pogut desar el reenviament ni els destinataris de la resposta",
     "nothing_to_undo": "No hi ha res per desfer",
     "undo_hint": "Premeu {keys} per desfer-ho.",
-    "undone": "S'ha desfet"
+    "undone": "S'ha desfet",
+    "emails_marked_read": "{count, plural, one {# correu marcat com a llegit} other {# correus marcats com a llegits}}",
+    "emails_marked_unread": "{count, plural, one {# correu marcat com a no llegit} other {# correus marcats com a no llegits}}",
+    "tag_removed": "S'ha tret l'etiqueta",
+    "tag_removed_count": "{count, plural, one {S'ha tret l'etiqueta de # correu} other {S'ha tret l'etiqueta de # correus}}"
   },
   "third_party": {
     "push_needs_relay": "Les notificacions push necessiten un repetidor push gestionat per la vostra organització, i no n'hi ha cap de configurat. El correu nou es continua mostrant mentre l'aplicació està oberta.",
diff --git a/locales/cs/common.json b/locales/cs/common.json
index 2d89eaeb6..f2e88c542 100644
--- a/locales/cs/common.json
+++ b/locales/cs/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "Nastavení nepřítomnosti bylo uloženo, ale přeposílání a příjemce odpovědi se uložit nepodařilo",
     "nothing_to_undo": "Není co vrátit",
     "undo_hint": "Stisknutím {keys} akci vrátíte.",
-    "undone": "Vráceno"
+    "undone": "Vráceno",
+    "emails_marked_read": "{count, plural, one {# zpráva označena jako přečtená} few {# zprávy označeny jako přečtené} other {# zpráv označeno jako přečtené}}",
+    "emails_marked_unread": "{count, plural, one {# zpráva označena jako nepřečtená} few {# zprávy označeny jako nepřečtené} other {# zpráv označeno jako nepřečtené}}",
+    "tag_removed": "Štítek odebrán",
+    "tag_removed_count": "{count, plural, one {Štítek odebrán z # zprávy} few {Štítek odebrán ze # zpráv} other {Štítek odebrán z # zpráv}}"
   },
   "third_party": {
     "push_needs_relay": "Push oznámení potřebují push relay provozovaný vaší organizací a žádný není nastaven. Nová pošta se dál zobrazuje, dokud je aplikace otevřená.",
diff --git a/locales/da/common.json b/locales/da/common.json
index 820ecf073..de32bff1f 100644
--- a/locales/da/common.json
+++ b/locales/da/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "Fraværsindstillinger gemt, men videresendelse og svarmodtagere kunne ikke gemmes",
     "nothing_to_undo": "Intet at fortryde",
     "undo_hint": "Tryk på {keys} for at fortryde.",
-    "undone": "Fortrudt"
+    "undone": "Fortrudt",
+    "emails_marked_read": "{count, plural, one {# e-mail markeret som læst} other {# e-mails markeret som læst}}",
+    "emails_marked_unread": "{count, plural, one {# e-mail markeret som ulæst} other {# e-mails markeret som ulæst}}",
+    "tag_removed": "Tag fjernet",
+    "tag_removed_count": "{count, plural, one {Tag fjernet fra # e-mail} other {Tag fjernet fra # e-mails}}"
   },
   "third_party": {
     "push_needs_relay": "Push-notifikationer kræver et push-relæ, som din organisation driver, og der er ikke sat noget op. Ny mail vises stadig, mens appen er åben.",
diff --git a/locales/de/common.json b/locales/de/common.json
index 4b294d7b3..8e7973cd9 100644
--- a/locales/de/common.json
+++ b/locales/de/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "Abwesenheits-Einstellungen gespeichert, Weiterleitung und Antwortempfänger konnten aber nicht gespeichert werden",
     "nothing_to_undo": "Nichts rückgängig zu machen",
     "undo_hint": "Mit {keys} machen Sie das rückgängig.",
-    "undone": "Rückgängig gemacht"
+    "undone": "Rückgängig gemacht",
+    "emails_marked_read": "{count, plural, one {# E-Mail als gelesen markiert} other {# E-Mails als gelesen markiert}}",
+    "emails_marked_unread": "{count, plural, one {# E-Mail als ungelesen markiert} other {# E-Mails als ungelesen markiert}}",
+    "tag_removed": "Markierung entfernt",
+    "tag_removed_count": "{count, plural, one {Markierung von # E-Mail entfernt} other {Markierung von # E-Mails entfernt}}"
   },
   "third_party": {
     "push_needs_relay": "Push-Benachrichtigungen brauchen ein Push-Relay Ihrer Organisation, und es ist keines eingerichtet. Neue E-Mails werden weiterhin angezeigt, solange die App geöffnet ist.",
diff --git a/locales/en/common.json b/locales/en/common.json
index a9a28dd8a..9bbf0113f 100644
--- a/locales/en/common.json
+++ b/locales/en/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "Out of office settings saved, but the forwarding and reply recipients could not be saved",
     "nothing_to_undo": "Nothing to undo",
     "undo_hint": "Press {keys} to undo.",
-    "undone": "Undone"
+    "undone": "Undone",
+    "emails_marked_read": "{count, plural, one {# email marked as read} other {# emails marked as read}}",
+    "emails_marked_unread": "{count, plural, one {# email marked as unread} other {# emails marked as unread}}",
+    "tag_removed": "Tag removed",
+    "tag_removed_count": "{count, plural, one {Tag removed from # email} other {Tag removed from # emails}}"
   },
   "third_party": {
     "push_needs_relay": "Push notifications need a push relay run by your organisation, and none is set up. New mail still shows while the app is open.",
diff --git a/locales/es/common.json b/locales/es/common.json
index 615cfa130..a097c0f1d 100644
--- a/locales/es/common.json
+++ b/locales/es/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "Configuración de ausencia guardada, pero no se pudieron guardar el reenvío ni los destinatarios de la respuesta",
     "nothing_to_undo": "No hay nada que deshacer",
     "undo_hint": "Pulsa {keys} para deshacer.",
-    "undone": "Deshecho"
+    "undone": "Deshecho",
+    "emails_marked_read": "{count, plural, one {# correo marcado como leído} other {# correos marcados como leídos}}",
+    "emails_marked_unread": "{count, plural, one {# correo marcado como no leído} other {# correos marcados como no leídos}}",
+    "tag_removed": "Etiqueta quitada",
+    "tag_removed_count": "{count, plural, one {Etiqueta quitada de # correo} other {Etiqueta quitada de # correos}}"
   },
   "third_party": {
     "push_needs_relay": "Las notificaciones push necesitan un relay push gestionado por tu organización, y no hay ninguno configurado. El correo nuevo se sigue mostrando mientras la aplicación está abierta.",
diff --git a/locales/et/common.json b/locales/et/common.json
index 5090e4ce4..a8cdfd9fa 100644
--- a/locales/et/common.json
+++ b/locales/et/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "Äraolekuteate seaded salvestati, kuid edastus- ja vastuse adressaate ei õnnestunud salvestada",
     "nothing_to_undo": "Pole midagi tagasi võtta",
     "undo_hint": "Tagasivõtmiseks vajuta {keys}.",
-    "undone": "Tagasi võetud"
+    "undone": "Tagasi võetud",
+    "emails_marked_read": "{count, plural, one {# kiri märgiti loetuks} other {# kirja märgiti loetuks}}",
+    "emails_marked_unread": "{count, plural, one {# kiri märgiti lugemata} other {# kirja märgiti lugemata}}",
+    "tag_removed": "Silt eemaldati",
+    "tag_removed_count": "{count, plural, one {Silt eemaldati # kirjalt} other {Silt eemaldati # kirjalt}}"
   },
   "third_party": {
     "push_needs_relay": "Tõuketeavitused vajavad sinu organisatsiooni hallatavat push-releed, kuid ühtegi pole seadistatud. Uued kirjad kuvatakse endiselt, kuni rakendus on avatud.",
diff --git a/locales/fa/common.json b/locales/fa/common.json
index 40634a476..bc2877c55 100644
--- a/locales/fa/common.json
+++ b/locales/fa/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "تنظیمات غیبت ذخیره شد، اما ذخیره بازارسال و گیرندگان پاسخ ناموفق بود",
     "nothing_to_undo": "چیزی برای بازگردانی نیست",
     "undo_hint": "برای بازگردانی {keys} را بزنید.",
-    "undone": "بازگردانده شد"
+    "undone": "بازگردانده شد",
+    "emails_marked_read": "{count, plural, other {# ایمیل خوانده شده علامت‌گذاری شد}}",
+    "emails_marked_unread": "{count, plural, other {# ایمیل خوانده نشده علامت‌گذاری شد}}",
+    "tag_removed": "برچسب برداشته شد",
+    "tag_removed_count": "{count, plural, other {برچسب از # ایمیل برداشته شد}}"
   },
   "third_party": {
     "push_needs_relay": "اعلان‌های push به یک رلهٔ push نیاز دارند که سازمان شما اداره کند، و هیچ‌کدام راه‌اندازی نشده است. تا وقتی برنامه باز است، ایمیل‌های جدید همچنان نمایش داده می‌شوند.",
diff --git a/locales/fr/common.json b/locales/fr/common.json
index d8c97169a..f32d4eabc 100644
--- a/locales/fr/common.json
+++ b/locales/fr/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "Paramètres d'absence enregistrés, mais le transfert et les destinataires de la réponse n'ont pas pu être enregistrés",
     "nothing_to_undo": "Rien à annuler",
     "undo_hint": "Appuyez sur {keys} pour annuler.",
-    "undone": "Annulé"
+    "undone": "Annulé",
+    "emails_marked_read": "{count, plural, one {# e-mail marqué comme lu} other {# e-mails marqués comme lus}}",
+    "emails_marked_unread": "{count, plural, one {# e-mail marqué comme non lu} other {# e-mails marqués comme non lus}}",
+    "tag_removed": "Étiquette retirée",
+    "tag_removed_count": "{count, plural, one {Étiquette retirée de # e-mail} other {Étiquette retirée de # e-mails}}"
   },
   "third_party": {
     "push_needs_relay": "Les notifications push nécessitent un relais push géré par votre organisation, et aucun n'est configuré. Les nouveaux messages s'affichent toujours tant que l'application est ouverte.",
diff --git a/locales/he/common.json b/locales/he/common.json
index 0a8742845..bdc809c13 100644
--- a/locales/he/common.json
+++ b/locales/he/common.json
@@ -1119,7 +1119,11 @@
     "vacation_filters_save_failed": "הגדרות ההיעדרות נשמרו, אך שמירת ההעברה ונמעני המענה נכשלה",
     "nothing_to_undo": "אין מה לבטל",
     "undo_hint": "הקישו {keys} כדי לבטל.",
-    "undone": "בוטל"
+    "undone": "בוטל",
+    "emails_marked_read": "{count, plural, one {הודעה אחת סומנה כנקראה} other {# הודעות סומנו כנקראו}}",
+    "emails_marked_unread": "{count, plural, one {הודעה אחת סומנה כלא נקראה} other {# הודעות סומנו כלא נקראו}}",
+    "tag_removed": "התגית הוסרה",
+    "tag_removed_count": "{count, plural, one {התגית הוסרה מהודעה אחת} other {התגית הוסרה מ-# הודעות}}"
   },
   "third_party": {
     "push_needs_relay": "התראות Push דורשות ממסר Push שהארגון שלך מפעיל, ולא הוגדר אף אחד. דואר חדש עדיין מוצג כל עוד האפליקציה פתוחה.",
diff --git a/locales/hu/common.json b/locales/hu/common.json
index 16eb3c555..96933fe0a 100644
--- a/locales/hu/common.json
+++ b/locales/hu/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "Távolléti beállítások elmentve, de a továbbítást és a válasz címzettjeit nem sikerült menteni",
     "nothing_to_undo": "Nincs mit visszavonni",
     "undo_hint": "Visszavonáshoz nyomd meg: {keys}.",
-    "undone": "Visszavonva"
+    "undone": "Visszavonva",
+    "emails_marked_read": "{count, plural, other {# e-mail olvasottnak jelölve}}",
+    "emails_marked_unread": "{count, plural, other {# e-mail olvasatlannak jelölve}}",
+    "tag_removed": "Címke eltávolítva",
+    "tag_removed_count": "{count, plural, other {Címke eltávolítva # e-mailről}}"
   },
   "third_party": {
     "push_needs_relay": "A push-értesítésekhez a szervezeted által üzemeltetett push relé kell, és nincs beállítva egy sem. Az új levelek továbbra is megjelennek, amíg az alkalmazás nyitva van.",
diff --git a/locales/it/common.json b/locales/it/common.json
index 87b7490e3..fff5d633c 100644
--- a/locales/it/common.json
+++ b/locales/it/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "Impostazioni di assenza salvate, ma non è stato possibile salvare l'inoltro e i destinatari della risposta",
     "nothing_to_undo": "Niente da annullare",
     "undo_hint": "Premi {keys} per annullare.",
-    "undone": "Annullato"
+    "undone": "Annullato",
+    "emails_marked_read": "{count, plural, one {# email segnata come letta} other {# email segnate come lette}}",
+    "emails_marked_unread": "{count, plural, one {# email segnata come non letta} other {# email segnate come non lette}}",
+    "tag_removed": "Etichetta rimossa",
+    "tag_removed_count": "{count, plural, one {Etichetta rimossa da # email} other {Etichetta rimossa da # email}}"
   },
   "third_party": {
     "push_needs_relay": "Le notifiche push richiedono un relay push gestito dalla tua organizzazione, e non ne è configurato nessuno. La nuova posta compare comunque finché l'app è aperta.",
diff --git a/locales/ja/common.json b/locales/ja/common.json
index 78be83a96..f647bee5f 100644
--- a/locales/ja/common.json
+++ b/locales/ja/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "不在の設定を保存しましたが、転送と返信する相手の保存に失敗しました",
     "nothing_to_undo": "元に戻す操作はありません",
     "undo_hint": "{keys} で元に戻せます。",
-    "undone": "元に戻しました"
+    "undone": "元に戻しました",
+    "emails_marked_read": "{count, plural, other {#件のメールを既読にしました}}",
+    "emails_marked_unread": "{count, plural, other {#件のメールを未読にしました}}",
+    "tag_removed": "タグを外しました",
+    "tag_removed_count": "{count, plural, other {#件のメールからタグを外しました}}"
   },
   "third_party": {
     "push_needs_relay": "プッシュ通知には組織が運用するプッシュリレーが必要ですが、設定されていません。アプリを開いている間は、新着メールが引き続き表示されます。",
diff --git a/locales/ko/common.json b/locales/ko/common.json
index 3e83189a2..8f68eac76 100644
--- a/locales/ko/common.json
+++ b/locales/ko/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "부재중 설정은 저장되었지만 전달 및 응답 대상 설정을 저장하지 못했어요",
     "nothing_to_undo": "실행 취소할 작업이 없어요",
     "undo_hint": "{keys}를 누르면 실행 취소돼요.",
-    "undone": "실행 취소했어요"
+    "undone": "실행 취소했어요",
+    "emails_marked_read": "{count, plural, other {메일 #개를 읽음으로 표시했어요}}",
+    "emails_marked_unread": "{count, plural, other {메일 #개를 읽지 않음으로 표시했어요}}",
+    "tag_removed": "태그를 뺐어요",
+    "tag_removed_count": "{count, plural, other {메일 #개에서 태그를 뺐어요}}"
   },
   "third_party": {
     "push_needs_relay": "푸시 알림을 받으려면 조직에서 운영하는 푸시 릴레이가 필요한데, 설정된 릴레이가 없어요. 앱이 열려 있는 동안에는 새 메일이 계속 표시돼요.",
diff --git a/locales/lv/common.json b/locales/lv/common.json
index e2b05d133..1fa1f2e93 100644
--- a/locales/lv/common.json
+++ b/locales/lv/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "Prombūtnes iestatījumi saglabāti, taču pārsūtīšanu un atbildes saņēmējus neizdevās saglabāt",
     "nothing_to_undo": "Nav ko atsaukt",
     "undo_hint": "Nospiediet {keys}, lai atsauktu.",
-    "undone": "Atsaukts"
+    "undone": "Atsaukts",
+    "emails_marked_read": "{count, plural, zero {# vēstules atzīmētas kā izlasītas} one {# vēstule atzīmēta kā izlasīta} other {# vēstules atzīmētas kā izlasītas}}",
+    "emails_marked_unread": "{count, plural, zero {# vēstules atzīmētas kā neizlasītas} one {# vēstule atzīmēta kā neizlasīta} other {# vēstules atzīmētas kā neizlasītas}}",
+    "tag_removed": "Tags noņemts",
+    "tag_removed_count": "{count, plural, zero {Tags noņemts # vēstulēm} one {Tags noņemts # vēstulei} other {Tags noņemts # vēstulēm}}"
   },
   "third_party": {
     "push_needs_relay": "Push paziņojumiem vajadzīgs jūsu organizācijas uzturēts push relejs, un neviens nav iestatīts. Jauns pasts joprojām tiek rādīts, kamēr lietotne ir atvērta.",
diff --git a/locales/mn/common.json b/locales/mn/common.json
index b762a810b..c33be2380 100644
--- a/locales/mn/common.json
+++ b/locales/mn/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "Эзгүй байх тохиргоог хадгалсан боловч дамжуулалт болон хариу хүлээн авагчдыг хадгалж чадсангүй",
     "nothing_to_undo": "Буцаах зүйл алга",
     "undo_hint": "Буцаахын тулд {keys} дарна уу.",
-    "undone": "Буцаагдлаа"
+    "undone": "Буцаагдлаа",
+    "emails_marked_read": "{count, plural, other {# имэйлийг уншсан гэж тэмдэглэлээ}}",
+    "emails_marked_unread": "{count, plural, other {# имэйлийг уншаагүй гэж тэмдэглэлээ}}",
+    "tag_removed": "Хаяг хасагдлаа",
+    "tag_removed_count": "{count, plural, other {# имэйлээс хаяг хасагдлаа}}"
   },
   "third_party": {
     "push_needs_relay": "Push мэдэгдэлд таны байгууллагын ажиллуулдаг push буухиа хэрэгтэй, гэвч нэг ч тохируулагдаагүй байна. Апп нээлттэй байх үед шинэ имэйл харагдсаар байна.",
diff --git a/locales/nb/common.json b/locales/nb/common.json
index 77f64f145..98b9533a6 100644
--- a/locales/nb/common.json
+++ b/locales/nb/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "Fraværsinnstillinger er lagret, men videresending og svarmottakere kunne ikke lagres",
     "nothing_to_undo": "Ingenting å angre",
     "undo_hint": "Trykk {keys} for å angre.",
-    "undone": "Angret"
+    "undone": "Angret",
+    "emails_marked_read": "{count, plural, one {# e-post merket som lest} other {# e-poster merket som lest}}",
+    "emails_marked_unread": "{count, plural, one {# e-post merket som ulest} other {# e-poster merket som ulest}}",
+    "tag_removed": "Etikett fjernet",
+    "tag_removed_count": "{count, plural, one {Etikett fjernet fra # e-post} other {Etikett fjernet fra # e-poster}}"
   },
   "third_party": {
     "push_needs_relay": "Push-varsler trenger et push-relé som organisasjonen din driver, og det er ikke satt opp noe. Ny e-post vises fortsatt mens appen er åpen.",
diff --git a/locales/nl/common.json b/locales/nl/common.json
index cb7ae0ca1..732e8a0c4 100644
--- a/locales/nl/common.json
+++ b/locales/nl/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "Afwezigheidsinstellingen opgeslagen, maar het doorsturen en de ontvangers van het antwoord konden niet worden opgeslagen",
     "nothing_to_undo": "Niets om ongedaan te maken",
     "undo_hint": "Druk op {keys} om ongedaan te maken.",
-    "undone": "Ongedaan gemaakt"
+    "undone": "Ongedaan gemaakt",
+    "emails_marked_read": "{count, plural, one {# e-mail gemarkeerd als gelezen} other {# e-mails gemarkeerd als gelezen}}",
+    "emails_marked_unread": "{count, plural, one {# e-mail gemarkeerd als ongelezen} other {# e-mails gemarkeerd als ongelezen}}",
+    "tag_removed": "Label verwijderd",
+    "tag_removed_count": "{count, plural, one {Label verwijderd van # e-mail} other {Label verwijderd van # e-mails}}"
   },
   "third_party": {
     "push_needs_relay": "Pushmeldingen hebben een pushrelay van je organisatie nodig, en er is er geen ingesteld. Nieuwe e-mail wordt nog steeds getoond zolang de app open is.",
diff --git a/locales/pl/common.json b/locales/pl/common.json
index 9797f574a..7c6d2eaba 100644
--- a/locales/pl/common.json
+++ b/locales/pl/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "Ustawienia nieobecności zapisane, ale nie udało się zapisać przekazywania ani odbiorców odpowiedzi",
     "nothing_to_undo": "Nie ma czego cofnąć",
     "undo_hint": "Naciśnij {keys}, aby cofnąć.",
-    "undone": "Cofnięto"
+    "undone": "Cofnięto",
+    "emails_marked_read": "{count, plural, one {# wiadomość oznaczona jako przeczytana} few {# wiadomości oznaczone jako przeczytane} many {# wiadomości oznaczonych jako przeczytane} other {# wiadomości oznaczonych jako przeczytane}}",
+    "emails_marked_unread": "{count, plural, one {# wiadomość oznaczona jako nieprzeczytana} few {# wiadomości oznaczone jako nieprzeczytane} many {# wiadomości oznaczonych jako nieprzeczytane} other {# wiadomości oznaczonych jako nieprzeczytane}}",
+    "tag_removed": "Etykieta usunięta",
+    "tag_removed_count": "{count, plural, one {Usunięto etykietę z # wiadomości} few {Usunięto etykietę z # wiadomości} many {Usunięto etykietę z # wiadomości} other {Usunięto etykietę z # wiadomości}}"
   },
   "third_party": {
     "push_needs_relay": "Powiadomienia push wymagają przekaźnika push prowadzonego przez Twoją organizację, a żaden nie jest skonfigurowany. Nowe wiadomości nadal pojawiają się, gdy aplikacja jest otwarta.",
diff --git a/locales/pt/common.json b/locales/pt/common.json
index 597fc2e29..14b7268e0 100644
--- a/locales/pt/common.json
+++ b/locales/pt/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "Configurações de ausência salvas, mas não foi possível salvar o encaminhamento e os destinatários da resposta",
     "nothing_to_undo": "Nada para desfazer",
     "undo_hint": "Pressione {keys} para desfazer.",
-    "undone": "Desfeito"
+    "undone": "Desfeito",
+    "emails_marked_read": "{count, plural, one {# e-mail marcado como lido} other {# e-mails marcados como lidos}}",
+    "emails_marked_unread": "{count, plural, one {# e-mail marcado como não lido} other {# e-mails marcados como não lidos}}",
+    "tag_removed": "Etiqueta removida",
+    "tag_removed_count": "{count, plural, one {Etiqueta removida de # e-mail} other {Etiqueta removida de # e-mails}}"
   },
   "third_party": {
     "push_needs_relay": "As notificações push precisam de um relay push mantido pela sua organização, e nenhum está configurado. Os novos e-mails continuam aparecendo enquanto o app estiver aberto.",
diff --git a/locales/ro/common.json b/locales/ro/common.json
index a57d2cb02..1f3c47213 100644
--- a/locales/ro/common.json
+++ b/locales/ro/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "Setările de absență au fost salvate, dar redirecționarea și destinatarii răspunsului nu au putut fi salvați",
     "nothing_to_undo": "Nu e nimic de anulat",
     "undo_hint": "Apasă {keys} pentru a anula.",
-    "undone": "Anulat"
+    "undone": "Anulat",
+    "emails_marked_read": "{count, plural, one {# e-mail marcat ca citit} few {# e-mailuri marcate ca citite} other {# de e-mailuri marcate ca citite}}",
+    "emails_marked_unread": "{count, plural, one {# e-mail marcat ca necitit} few {# e-mailuri marcate ca necitite} other {# de e-mailuri marcate ca necitite}}",
+    "tag_removed": "Etichetă eliminată",
+    "tag_removed_count": "{count, plural, one {Eticheta a fost eliminată de pe # e-mail} few {Eticheta a fost eliminată de pe # e-mailuri} other {Eticheta a fost eliminată de pe # de e-mailuri}}"
   },
   "third_party": {
     "push_needs_relay": "Notificările push au nevoie de un releu push administrat de organizația dvs., iar niciunul nu este configurat. E-mailurile noi apar în continuare cât timp aplicația este deschisă.",
diff --git a/locales/ru/common.json b/locales/ru/common.json
index 253d85023..4446a18d9 100644
--- a/locales/ru/common.json
+++ b/locales/ru/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "Настройки отсутствия сохранены, но пересылку и получателей ответа сохранить не удалось",
     "nothing_to_undo": "Нечего отменять",
     "undo_hint": "Нажмите {keys}, чтобы отменить.",
-    "undone": "Отменено"
+    "undone": "Отменено",
+    "emails_marked_read": "{count, plural, one {# письмо отмечено прочитанным} few {# письма отмечены прочитанными} many {# писем отмечено прочитанными} other {# письма отмечено прочитанными}}",
+    "emails_marked_unread": "{count, plural, one {# письмо отмечено непрочитанным} few {# письма отмечены непрочитанными} many {# писем отмечено непрочитанными} other {# письма отмечено непрочитанными}}",
+    "tag_removed": "Тег снят",
+    "tag_removed_count": "{count, plural, one {Тег снят с # письма} few {Тег снят с # писем} many {Тег снят с # писем} other {Тег снят с # письма}}"
   },
   "third_party": {
     "push_needs_relay": "Для push-уведомлений нужен push-релей вашей организации, а он не настроен. Новые письма по-прежнему видны, пока приложение открыто.",
diff --git a/locales/sk/common.json b/locales/sk/common.json
index 4b459b2bf..026f1372e 100644
--- a/locales/sk/common.json
+++ b/locales/sk/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "Nastavenia neprítomnosti boli uložené, ale preposielanie a príjemcov odpovede sa nepodarilo uložiť",
     "nothing_to_undo": "Nie je čo vrátiť",
     "undo_hint": "Stlačením {keys} akciu vrátite.",
-    "undone": "Vrátené"
+    "undone": "Vrátené",
+    "emails_marked_read": "{count, plural, one {# e-mail označený ako prečítaný} few {# e-maily označené ako prečítané} other {# e-mailov označených ako prečítané}}",
+    "emails_marked_unread": "{count, plural, one {# e-mail označený ako neprečítaný} few {# e-maily označené ako neprečítané} other {# e-mailov označených ako neprečítané}}",
+    "tag_removed": "Štítok odstránený",
+    "tag_removed_count": "{count, plural, one {Štítok odstránený z # e-mailu} few {Štítok odstránený z # e-mailov} other {Štítok odstránený z # e-mailov}}"
   },
   "third_party": {
     "push_needs_relay": "Push oznámenia potrebujú push relay prevádzkovaný vašou organizáciou a žiadny nie je nastavený. Nová pošta sa naďalej zobrazuje, kým je aplikácia otvorená.",
diff --git a/locales/th/common.json b/locales/th/common.json
index e626dc607..eaa9c26d1 100644
--- a/locales/th/common.json
+++ b/locales/th/common.json
@@ -521,7 +521,11 @@
     "vacation_filters_save_failed": "บันทึกการตั้งค่าตอบกลับอัตโนมัติแล้ว แต่ไม่สามารถบันทึกผู้รับส่งต่อและผู้รับตอบกลับได้",
     "nothing_to_undo": "ไม่มีอะไรให้เลิกทำ",
     "undo_hint": "กด {keys} เพื่อเลิกทำ",
-    "undone": "เลิกทำแล้ว"
+    "undone": "เลิกทำแล้ว",
+    "emails_marked_read": "{count, plural, other {ทำเครื่องหมายอีเมล # ฉบับว่าอ่านแล้ว}}",
+    "emails_marked_unread": "{count, plural, other {ทำเครื่องหมายอีเมล # ฉบับว่ายังไม่ได้อ่าน}}",
+    "tag_removed": "นำป้ายกำกับออกแล้ว",
+    "tag_removed_count": "{count, plural, other {นำป้ายกำกับออกจากอีเมล # ฉบับแล้ว}}"
   },
   "third_party": {
     "push_needs_relay": "การแจ้งเตือนแบบพุชต้องใช้ push relay ที่องค์กรของคุณดูแล แต่ยังไม่ได้ตั้งค่าไว้ อีเมลใหม่จะยังแสดงขณะที่เปิดแอปอยู่",
diff --git a/locales/tr/common.json b/locales/tr/common.json
index 91da502ab..3b12a6588 100644
--- a/locales/tr/common.json
+++ b/locales/tr/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "Ofis dışında ayarları kaydedildi, ancak iletme ve yanıt alıcıları kaydedilemedi",
     "nothing_to_undo": "Geri alınacak bir şey yok",
     "undo_hint": "Geri almak için {keys} tuşlarına basın.",
-    "undone": "Geri alındı"
+    "undone": "Geri alındı",
+    "emails_marked_read": "{count, plural, other {# e-posta okundu olarak işaretlendi}}",
+    "emails_marked_unread": "{count, plural, other {# e-posta okunmadı olarak işaretlendi}}",
+    "tag_removed": "Etiket kaldırıldı",
+    "tag_removed_count": "{count, plural, other {# e-postadan etiket kaldırıldı}}"
   },
   "third_party": {
     "push_needs_relay": "Anlık bildirimler için kuruluşunuzun işlettiği bir push rölesi gerekir ve hiçbiri ayarlanmamış. Uygulama açıkken yeni postalar yine de görünür.",
diff --git a/locales/uk/common.json b/locales/uk/common.json
index 56d33c2bd..27207d483 100644
--- a/locales/uk/common.json
+++ b/locales/uk/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "Налаштування відсутності збережено, але пересилання та отримувачів відповіді зберегти не вдалося",
     "nothing_to_undo": "Нічого скасовувати",
     "undo_hint": "Натисніть {keys}, щоб скасувати.",
-    "undone": "Скасовано"
+    "undone": "Скасовано",
+    "emails_marked_read": "{count, plural, one {# лист позначено прочитаним} few {# листи позначено прочитаними} many {# листів позначено прочитаними} other {# листа позначено прочитаними}}",
+    "emails_marked_unread": "{count, plural, one {# лист позначено непрочитаним} few {# листи позначено непрочитаними} many {# листів позначено непрочитаними} other {# листа позначено непрочитаними}}",
+    "tag_removed": "Тег знято",
+    "tag_removed_count": "{count, plural, one {Тег знято з # листа} few {Тег знято з # листів} many {Тег знято з # листів} other {Тег знято з # листа}}"
   },
   "third_party": {
     "push_needs_relay": "Для push-сповіщень потрібне push-реле вашої організації, а його не налаштовано. Нові листи й далі з'являються, поки застосунок відкритий.",
diff --git a/locales/zh-TW/common.json b/locales/zh-TW/common.json
index 15f9ea7f7..4bc2f2bc2 100644
--- a/locales/zh-TW/common.json
+++ b/locales/zh-TW/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "外出設定已儲存，但轉寄和回覆對象設定未能儲存",
     "nothing_to_undo": "沒有可復原的動作",
     "undo_hint": "按 {keys} 復原。",
-    "undone": "已復原"
+    "undone": "已復原",
+    "emails_marked_read": "{count, plural, other {已將 # 封郵件標示為已讀}}",
+    "emails_marked_unread": "{count, plural, other {已將 # 封郵件標示為未讀}}",
+    "tag_removed": "已移除標籤",
+    "tag_removed_count": "{count, plural, other {已從 # 封郵件移除標籤}}"
   },
   "third_party": {
     "push_needs_relay": "推送通知需要由您的組織執行的推送中繼，但尚未設定。應用程式開啟時，新郵件仍會顯示。",
diff --git a/locales/zh/common.json b/locales/zh/common.json
index afc483bc6..af7e6d920 100644
--- a/locales/zh/common.json
+++ b/locales/zh/common.json
@@ -1154,7 +1154,11 @@
     "vacation_filters_save_failed": "外出设置已保存，但转发和回复对象设置未能保存",
     "nothing_to_undo": "没有可撤销的操作",
     "undo_hint": "按 {keys} 撤销。",
-    "undone": "已撤销"
+    "undone": "已撤销",
+    "emails_marked_read": "{count, plural, other {已将 # 封邮件标记为已读}}",
+    "emails_marked_unread": "{count, plural, other {已将 # 封邮件标记为未读}}",
+    "tag_removed": "已移除标签",
+    "tag_removed_count": "{count, plural, other {已从 # 封邮件移除标签}}"
   },
   "third_party": {
     "push_needs_relay": "推送通知需要由您的组织运行的推送中继，但尚未设置。应用打开时，新邮件仍会显示。",