diff --git a/components/email/__tests__/email-context-menu-shared-tags.test.tsx b/components/email/__tests__/email-context-menu-shared-tags.test.tsx
new file mode 100644
index 000000000..9f9e340a3
--- /dev/null
+++ b/components/email/__tests__/email-context-menu-shared-tags.test.tsx
@@ -0,0 +1,96 @@
+import { act, fireEvent, render, screen } from '@testing-library/react';
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import type { Email, Mailbox } from '@/lib/jmap/types';
+
+vi.mock('@/components/plugins/plugin-slot', () => ({
+  PluginSlot: () => null,
+}));
+
+import { EmailContextMenu } from '../email-context-menu';
+import { useAuthStore } from '@/stores/auth-store';
+import { useSettingsStore } from '@/stores/settings-store';
+import { loadSharedTags, resetSharedTags, sharedTagsKey, useSharedTagsStore } from '@/stores/shared-tags-store';
+
+// The context menu's tag list for a selection offers the tags of the
+// selection's account (commonTagScope, like the toolbar), not those of the
+// row that was right-clicked.
+
+const TEAM = { loginId: 'login-1', accountId: 'team' };
+
+// A message in the group account, right-clicked.
+const email = {
+  id: 'e1',
+  threadId: 't1',
+  mailboxIds: { 'team:inbox': true },
+  keywords: { $seen: true },
+  from: [{ email: 'alice@example.com' }],
+  subject: 'Hello',
+  receivedAt: '2026-01-01T00:00:00Z',
+  size: 100,
+  sourceClientAccountId: 'login-1',
+  sourceAccountId: 'team',
+} as unknown as Email;
+
+const mailboxes = [{ id: 'inbox', name: 'Inbox', role: 'inbox', parentId: null, myRights: { mayAddItems: true } }] as unknown as Mailbox[];
+
+function openTags(batchTagScope: typeof TEAM | null) {
+  render(
+    <EmailContextMenu
+      email={email}
+      position={{ x: 10, y: 10 }}
+      isOpen
+      onClose={vi.fn()}
+      menuRef={{ current: null }}
+      mailboxes={mailboxes}
+      selectedMailbox="inbox"
+      currentMailboxRole="inbox"
+      isMultiSelect
+      selectedCount={2}
+      batchTagIds={[]}
+      batchPartialTagIds={[]}
+      batchTagScope={batchTagScope}
+      onBatchToggleTag={vi.fn()}
+    />,
+  );
+  act(() => { fireEvent.mouseEnter(screen.getByTestId('ctx-tag')); });
+}
+
+beforeEach(async () => {
+  resetSharedTags();
+  // The group's tags come through the real loading path.
+  const client = {
+    getAccountId: () => 'me',
+    getSieveAccountId: () => 'me',
+    supportsSieve: () => false,
+    getSharedAccounts: () => [],
+    getAccountInfo: () => ({ isPersonal: false }),
+    getPrincipalTypes: async () => ({ team: 'group' }),
+    advertisesBulwarkMetadata: () => true,
+    supportsBulwarkMetadata: () => true,
+    getBulwarkMetadata: async () => ({ tags: { tags: { urgent: { label: 'Team urgent', color: 'red' } } } }),
+    discoverKeywords: async () => ({ keywords: {}, scanned: 0, total: 0, complete: true }),
+  };
+  useAuthStore.setState({
+    client: client as never,
+    activeAccountId: 'login-1',
+    getClientForAccount: ((id: string) => (id === 'login-1' ? client : undefined)) as never,
+  });
+  useSettingsStore.setState({ emailKeywords: [{ id: 'mine', label: 'Mine', color: 'blue' }], nestedTags: false });
+  await loadSharedTags(sharedTagsKey(TEAM.loginId, TEAM.accountId), TEAM.accountId, client);
+  expect(useSharedTagsStore.getState().entries[sharedTagsKey(TEAM.loginId, TEAM.accountId)]?.status).toBe('ready');
+});
+afterEach(() => resetSharedTags());
+
+describe('EmailContextMenu tags for a selection', () => {
+  it('offers the group\'s shared tags when the whole selection is in the group', async () => {
+    openTags(TEAM);
+    expect(await screen.findByText('Team urgent')).toBeInTheDocument();
+    expect(screen.queryByText('Mine')).not.toBeInTheDocument();
+  });
+
+  it('offers the own tags when the selection mixes accounts, even from a group row', async () => {
+    openTags(null);
+    expect(await screen.findByText('Mine')).toBeInTheDocument();
+    expect(screen.queryByText('Team urgent')).not.toBeInTheDocument();
+  });
+});
diff --git a/components/email/email-context-menu.tsx b/components/email/email-context-menu.tsx
index 1ec0402d4..161e65e09 100644
--- a/components/email/email-context-menu.tsx
+++ b/components/email/email-context-menu.tsx
@@ -4,7 +4,7 @@ import { useMemo } from "react";
 import { useTranslations } from "next-intl";
 import { useSettingsStore } from "@/stores/settings-store";
 import { useEmailStore, removalFolder, canRemoveFromFolder, emailLinkSource } from "@/stores/email-store";
-import { useEmailTagScope } from "@/hooks/use-account-tags";
+import { useEmailTagScope, type TagScope } from "@/hooks/use-account-tags";
 import { Email, Mailbox } from "@/lib/jmap/types";
 import {
   ContextMenu,
@@ -113,6 +113,11 @@ interface EmailContextMenuProps {
   /** Tags every selected message carries, and those only some of them do. */
   batchTagIds?: string[];
   batchPartialTagIds?: string[];
+  /**
+   * The account of the whole selection (commonTagScope): its tags are
+   * offered. Null when the selection mixes accounts: the user's own tags.
+   */
+  batchTagScope?: TagScope | null;
   /** Takes the tag off when the whole selection has it, else puts it on all. */
   onBatchToggleTag?: (tagId: string) => void;
   onBatchDelete?: () => void;
@@ -180,6 +185,7 @@ export function EmailContextMenu({
   onBatchMarkAsRead,
   batchTagIds,
   batchPartialTagIds,
+  batchTagScope = null,
   onBatchToggleTag,
   onBatchDelete,
   onBatchArchive,
@@ -207,7 +213,7 @@ export function EmailContextMenu({
   const isPinned = email.keywords?.['$pinned'] === true;
   const isDraft = email.keywords?.['$draft'] === true;
   const currentTagIds = getEmailTagIds(email.keywords);
-  // The row's account names the tags, for a selection too: it is part of it.
+  // The row's account names its tags; a selection uses batchTagScope.
   const tagScope = useEmailTagScope(email);
   const showBatchActions = isMultiSelect && selectedCount > 1;
   const isInJunkFolder = currentMailboxRole === 'junk';
@@ -500,7 +506,7 @@ export function EmailContextMenu({
                   selectedIds={batchTagIds ?? []}
                   partialIds={batchPartialTagIds}
                   onToggle={(tagId) => onBatchToggleTag?.(tagId)}
-                  scope={tagScope}
+                  scope={batchTagScope}
                 />
               ) : (
                 <TagPicker
diff --git a/components/email/email-list.tsx b/components/email/email-list.tsx
index 7b5c35044..312a2439a 100644
--- a/components/email/email-list.tsx
+++ b/components/email/email-list.tsx
@@ -1173,6 +1173,7 @@ export function EmailList({
           onBatchMarkAsRead={(read) => markSelectionRead(read)}
           batchTagIds={selectionTags.all}
           batchPartialTagIds={selectionTags.some}
+          batchTagScope={selectionTags.scope}
           onBatchToggleTag={handleBatchToggleTag}
           onBatchDelete={async () => {
             if (!client) return;