fix: translate the mail list and label its icon buttons

The filter sheet, the .eml import result, the selection count, the
folder totals and the offline sync banner were English literals or
built by gluing translated words to numbers. They now use t() with ICU
arguments and plurals; filter chips go through a "{field}: {value}"
message so translators control the order. The invitation trust
warnings used keys that no catalog had, so they are now literal t()
calls and harvested.

For screen readers (audit U8) the hamburger, select-all checkbox,
filter, sort and compose buttons, the selection toolbar, search and
chip clear buttons, and the close buttons of the move, tag, template,
identity, QR and action sheets get translated labels and roles.

locales/rn/en.json

@@ -56,6 +56,10 @@
       "response_sent": "Response sent",
       "tentative": "Maybe",
       "title": "Calendar invitation",
+      "trust_authentication_failed": "This message failed sender authentication (SPF/DKIM/DMARC).",
+      "trust_authentication_missing": "The sender could not be verified.",
+      "trust_sender_mismatch": "The sender differs from the event organizer.",
+      "trust_sender_mismatch_unverified": "The sender does not match the organizer and the message is not authenticated.",
       "trust_verified": "Sender verified"
     },
     "management": {
@@ -266,6 +270,15 @@
     "emails_archived_count": "{count, plural, one {# email} other {# emails}} archived",
     "emails_moved_to": "{count, plural, one {# email} other {# emails}} moved to {mailbox}",
     "error": "Error",
+    "filter_chip": "{field}: {value}",
+    "filter_title": "Filter emails",
+    "folder_counts": "{total} total · {unread} unread",
+    "import": {
+      "none": "No messages were imported.",
+      "partial": "{imported} imported, {failed} failed.",
+      "success": "{count, plural, one {# message imported.} other {# messages imported.}}",
+      "title": "Import"
+    },
     "marked_as_spam": "Marked as spam",
     "marked_as_spam_count": "{count, plural, one {# email} other {# emails}} marked as spam",
     "marked_not_spam": "Marked as not spam",
@@ -285,10 +298,12 @@
     "outbox_discard": "Discard",
     "outbox_failed": "{count} changes could not be saved to the server.",
     "recent_searches": "Recent searches",
+    "remove_filter": "Remove filter {label}",
     "scope_all_folders": "All folders",
     "scope_this_folder": "This folder",
     "search_placeholder": "Search mail...",
     "showing_cached": "Showing cached mail",
+    "sort_toggle_hint": "Reverses the mail sort order",
     "swipe_move": "Move",
     "swipe_spam": "Spam",
     "total": "total",
@@ -475,7 +490,18 @@
   },
   "offline": {
     "banner": "You are offline",
-    "queued_changes": "{count, plural, one {# change} other {# changes}} will sync when you reconnect"
+    "queued_changes": "{count, plural, one {# change} other {# changes}} will sync when you reconnect",
+    "sync": {
+      "cached_count": "{count, plural, one {# new message cached} other {# new messages cached}} • {size}",
+      "cancelled": "Sync cancelled",
+      "failed": "Offline sync failed",
+      "processed": "{completed}/{total} processed",
+      "ready": "Offline mail ready",
+      "syncing": "Syncing offline mail",
+      "title": "Offline sync",
+      "unable_to_download": "Unable to download",
+      "up_to_date": "Already up to date"
+    }
   },
   "push_prompt": {
     "body": "Turn on background notifications so new messages reach you while the app is closed.",

src/components/IdentitySheet.tsx

@@ -60,7 +60,10 @@ export function IdentitySheet({
           </View>
           <View style={styles.sheetHeader}>
             <Text style={styles.sheetTitle}>{t('email_composer.from', 'From')}</Text>
-            <Pressable onPress={onClose} hitSlop={8} style={styles.sheetClose}>
+            <Pressable onPress={onClose} hitSlop={8} style={styles.sheetClose}
+              accessibilityRole="button"
+              accessibilityLabel={t('common.close', 'Close')}
+            >
               <X size={18} color={c.textSecondary} />
             </Pressable>
           </View>

src/components/MoveSheet.tsx

@@ -92,7 +92,10 @@ export function MoveSheet({
           </View>
           <View style={styles.sheetHeader}>
             <Text style={styles.sheetTitle}>{t('context_menu.move_to', 'Move to folder')}</Text>
-            <Pressable onPress={onClose} hitSlop={8} style={styles.sheetClose}>
+            <Pressable onPress={onClose} hitSlop={8} style={styles.sheetClose}
+              accessibilityRole="button"
+              accessibilityLabel={t('common.close', 'Close')}
+            >
               <X size={18} color={c.textSecondary} />
             </Pressable>
           </View>

src/components/OfflineCacheBanner.tsx

@@ -10,11 +10,13 @@ import { useUpdatesStore } from '../stores/updates-store';
 import { formatBytes } from '../lib/offline-sync';
 import { spacing, radius, typography, type ThemePalette } from '../theme/tokens';
 import { useColors } from '../theme/colors';
+import { useLocaleStore } from '../stores/locale-store';
 
 export function OfflineCacheBanner(): React.ReactElement | null {
   const c = useColors();
   const styles = React.useMemo(() => makeStyles(c), [c]);
   const insets = useSafeAreaInsets();
+  const t = useLocaleStore((s) => s.t);
   const sync = useOfflineCacheStore((s) => s.sync);
   const requestAbort = useOfflineCacheStore((s) => s.requestAbort);
   const resetSync = useOfflineCacheStore((s) => s.resetSync);
@@ -32,9 +34,9 @@ export function OfflineCacheBanner(): React.ReactElement | null {
   // permanent fixture; the Settings screen still shows the cache stats.
   React.useEffect(() => {
     if (sync.phase === 'done' || sync.phase === 'cancelled') {
-      const t = setTimeout(() => resetSync(), 4000);
+      const timer = setTimeout(() => resetSync(), 4000);
-      setHideTimer(t);
+      setHideTimer(timer);
-      return () => clearTimeout(t);
+      return () => clearTimeout(timer);
     }
     if (hideTimer) clearTimeout(hideTimer);
     return undefined;
@@ -48,30 +50,34 @@ export function OfflineCacheBanner(): React.ReactElement | null {
       ? Math.min(100, Math.round((sync.completed / sync.total) * 100))
       : sync.phase === 'done' ? 100 : 0;
 
-  let title = 'Offline sync';
+  let title = t('offline.sync.title', 'Offline sync');
   let subtitle = '';
   switch (sync.phase) {
     case 'scanning':
-      title = 'Syncing offline mail';
+      title = t('offline.sync.syncing', 'Syncing offline mail');
-      subtitle = 'Scanning recent messages…';
+      subtitle = t('settings.offline.scanning', 'Scanning recent mail…');
       break;
     case 'fetching':
-      title = 'Syncing offline mail';
+      title = t('offline.sync.syncing', 'Syncing offline mail');
       subtitle = `${sync.completed}/${sync.total} • ${formatBytes(sync.bytes)}`;
       break;
     case 'done':
-      title = 'Offline mail ready';
+      title = t('offline.sync.ready', 'Offline mail ready');
       subtitle = sync.fetched > 0
-        ? `${sync.fetched} new message${sync.fetched === 1 ? '' : 's'} cached • ${formatBytes(sync.bytes)}`
+        ? t(
-        : 'Already up to date';
+          'offline.sync.cached_count',
+          '{count, plural, one {# new message cached} other {# new messages cached}} • {size}',
+          { count: sync.fetched, size: formatBytes(sync.bytes) },
+        )
+        : t('offline.sync.up_to_date', 'Already up to date');
       break;
     case 'cancelled':
-      title = 'Sync cancelled';
+      title = t('offline.sync.cancelled', 'Sync cancelled');
-      subtitle = `${sync.completed}/${sync.total} processed`;
+      subtitle = t('offline.sync.processed', '{completed}/{total} processed', { completed: sync.completed, total: sync.total });
       break;
     case 'error':
-      title = 'Offline sync failed';
+      title = t('offline.sync.failed', 'Offline sync failed');
-      subtitle = sync.message ?? 'Unable to download';
+      subtitle = sync.message ?? t('offline.sync.unable_to_download', 'Unable to download');
       break;
     default:
       return null;
@@ -94,12 +100,18 @@ export function OfflineCacheBanner(): React.ReactElement | null {
         )}
       </View>
       {showCancel && (
-        <Pressable style={styles.cancelButton} onPress={requestAbort} hitSlop={6}>
+        <Pressable style={styles.cancelButton} onPress={requestAbort} hitSlop={6} accessibilityRole="button">
-          <Text style={styles.cancelText}>Cancel</Text>
+          <Text style={styles.cancelText}>{t('common.cancel', 'Cancel')}</Text>
         </Pressable>
       )}
       {showDismiss && (
-        <Pressable style={styles.dismiss} onPress={resetSync} hitSlop={8}>
+        <Pressable
+          style={styles.dismiss}
+          onPress={resetSync}
+          hitSlop={8}
+          accessibilityRole="button"
+          accessibilityLabel={t('common.dismiss', 'Dismiss')}
+        >
           <X size={14} color={c.primaryForeground} />
         </Pressable>
       )}

src/components/QrScanModal.tsx

@@ -76,7 +76,10 @@ export function QrScanModal({ visible, onClose, onScanned }: QrScanModalProps) {
 
         <SafeAreaView style={styles.overlay}>
           <View style={styles.header}>
-            <Pressable onPress={onClose} hitSlop={10} style={styles.closeButton}>
+            <Pressable onPress={onClose} hitSlop={10} style={styles.closeButton}
+              accessibilityRole="button"
+              accessibilityLabel={t('common.close', 'Close')}
+            >
               <X size={24} color={c.text} />
             </Pressable>
             <Text style={styles.title}>{t('login.mobile.qr_title', 'Sign-in code')}</Text>

src/components/TagSheet.tsx

@@ -83,7 +83,10 @@ export function TagSheet({ visible, onClose, keywords, selectedEmails, onToggle
             <Text style={styles.title}>
               {t('context_menu.items_selected', `${selectedEmails.length} emails selected`, { count: selectedEmails.length })}
             </Text>
-            <Pressable onPress={onClose} hitSlop={8} style={styles.close}>
+            <Pressable onPress={onClose} hitSlop={8} style={styles.close}
+              accessibilityRole="button"
+              accessibilityLabel={t('common.close', 'Close')}
+            >
               <X size={18} color={c.textSecondary} />
             </Pressable>
           </View>

src/components/TemplateSheet.tsx

@@ -79,7 +79,10 @@ export function TemplateSheet({ visible, onClose, onPick }: TemplateSheetProps)
           </View>
           <View style={styles.sheetHeader}>
             <Text style={styles.sheetTitle}>{t('templates.picker_title', 'Choose a Template')}</Text>
-            <Pressable onPress={onClose} hitSlop={8} style={styles.sheetClose}>
+            <Pressable onPress={onClose} hitSlop={8} style={styles.sheetClose}
+              accessibilityRole="button"
+              accessibilityLabel={t('common.close', 'Close')}
+            >
               <X size={18} color={c.textSecondary} />
             </Pressable>
           </View>

src/components/__tests__/screens-i18n.test.ts

@@ -12,6 +12,27 @@ const TRANSLATED_FILES: Record<string, string[]> = {
   'screens/FilesScreen.tsx': [],
   'components/files/ShareSheet.tsx': [],
   'components/files/FilePreviewModal.tsx': [],
+  // The empty date filter shows the input format.
+  'screens/EmailListScreen.tsx': ['YYYY-MM-DD'],
+  'screens/ScheduledScreen.tsx': [],
+  'screens/EmailSourceScreen.tsx': [],
+  'components/OfflineBanner.tsx': [],
+  'components/OfflineCacheBanner.tsx': [],
+  'components/UndoSnackbar.tsx': [],
+  'components/UpdateBanner.tsx': [],
+  'components/ToastHost.tsx': [],
+  'components/PushOnboardingPrompt.tsx': [],
+  'components/MoveSheet.tsx': [],
+  'components/TagSheet.tsx': [],
+  'components/TemplateSheet.tsx': [],
+  'components/IdentitySheet.tsx': [],
+  'components/QrScanModal.tsx': [],
+  'components/email/ActionSheet.tsx': [],
+  'components/email/AddressActionSheet.tsx': [],
+  'components/email/CalendarInvitationBanner.tsx': [],
+  'components/email/ListAttachmentChips.tsx': [],
+  'components/email/ReadReceiptBanner.tsx': [],
+  'components/email/UnsubscribeBanner.tsx': [],
 };
 
 describe('translated screens', () => {

src/components/email/ActionSheet.tsx

@@ -5,6 +5,7 @@ import { X } from 'lucide-react-native';
 import { spacing, radius, typography, type ThemePalette } from '../../theme/tokens';
 import { useColors } from '../../theme/colors';
 import { useSheetDrag } from '../../lib/use-sheet-drag';
+import { useLocaleStore } from '../../stores/locale-store';
 
 export interface ActionSheetItem {
   key: string;
@@ -34,6 +35,7 @@ export function ActionSheet({ visible, title, subtitle, items, onClose, children
   const c = useColors();
   const styles = React.useMemo(() => makeStyles(c), [c]);
   const insets = useSafeAreaInsets();
+  const t = useLocaleStore((s) => s.t);
   const slideY = React.useRef(new Animated.Value(500)).current;
   const overlayOpacity = React.useRef(new Animated.Value(0)).current;
   const dragHandlers = useSheetDrag({ slideY, closedY: 500, onClose });
@@ -72,7 +74,10 @@ export function ActionSheet({ visible, title, subtitle, items, onClose, children
               <Text style={styles.title} numberOfLines={1}>{title}</Text>
               {subtitle ? <Text style={styles.subtitle} numberOfLines={1}>{subtitle}</Text> : null}
             </View>
-            <Pressable onPress={onClose} hitSlop={8} style={styles.close}>
+            <Pressable onPress={onClose} hitSlop={8} style={styles.close}
+              accessibilityRole="button"
+              accessibilityLabel={t('common.close', 'Close')}
+            >
               <X size={18} color={c.textSecondary} />
             </Pressable>
           </View>

src/components/email/CalendarInvitationBanner.tsx

@@ -39,24 +39,25 @@ interface Props {
   jmapAccountId?: string;
 }
 
-const TRUST_REASON_KEYS: Record<NonNullable<InvitationTrustAssessment['reason']>, [string, string]> = {
+// Literal t() calls so the keys are harvested into the catalog.
-  sender_mismatch_unverified: [
+function trustReasonText(
-    'calendar.invitation.trust_sender_mismatch_unverified',
+  reason: NonNullable<InvitationTrustAssessment['reason']>,
-    'The sender does not match the organizer and the message is not authenticated.',
+  t: (key: string, fallback?: string) => string,
-  ],
+): string {
-  authentication_failed: [
+  switch (reason) {
-    'calendar.invitation.trust_authentication_failed',
+    case 'sender_mismatch_unverified':
-    'This message failed sender authentication (SPF/DKIM/DMARC).',
+      return t(
-  ],
+        'calendar.invitation.trust_sender_mismatch_unverified',
-  sender_mismatch: [
+        'The sender does not match the organizer and the message is not authenticated.',
-    'calendar.invitation.trust_sender_mismatch',
+      );
-    'The sender differs from the event organizer.',
+    case 'authentication_failed':
-  ],
+      return t('calendar.invitation.trust_authentication_failed', 'This message failed sender authentication (SPF/DKIM/DMARC).');
-  authentication_missing: [
+    case 'sender_mismatch':
-    'calendar.invitation.trust_authentication_missing',
+      return t('calendar.invitation.trust_sender_mismatch', 'The sender differs from the event organizer.');
-    'The sender could not be verified.',
+    case 'authentication_missing':
-  ],
+      return t('calendar.invitation.trust_authentication_missing', 'The sender could not be verified.');
-};
+  }
+}
 
 export function CalendarInvitationBanner({ email, jmapAccountId }: Props) {
   const c = useColors();
@@ -264,7 +265,7 @@ export function CalendarInvitationBanner({ email, jmapAccountId }: Props) {
           )}
           <Text style={[styles.trustText, { color: trustColor }]} numberOfLines={3}>
             {trust.reason
-              ? t(TRUST_REASON_KEYS[trust.reason][0], TRUST_REASON_KEYS[trust.reason][1])
+              ? trustReasonText(trust.reason, t)
               : t('calendar.invitation.trust_verified', 'Sender verified')}
           </Text>
         </View>
@@ -287,7 +288,7 @@ export function CalendarInvitationBanner({ email, jmapAccountId }: Props) {
       {organizer ? (
         <Row
           icon={<CalendarPlus size={15} color={c.textMuted} />}
-          text={`${t('calendar.invitation.organizer', 'Organizer')}: ${organizer}`}
+          text={t('email_viewer.calendar_invitation.organizer', 'Organized by {name}', { name: organizer })}
           styles={styles}
         />
       ) : null}

src/screens/EmailListScreen.tsx

@@ -52,8 +52,8 @@ import { getFullEmail, emptyMailbox as apiEmptyMailbox } from '../api/email';
 import type { RootStackParamList } from '../navigation/types';
 import type { Attachment, Email } from '../api/types';
 
-function getSenderName(email: Email): string {
+function getSenderName(email: Email, unknownLabel: string): string {
-  return email.from?.[0]?.name || email.from?.[0]?.email || 'Unknown';
+  return email.from?.[0]?.name || email.from?.[0]?.email || unknownLabel;
 }
 
 function getSenderEmail(email: Email): string | undefined {
@@ -61,12 +61,12 @@ function getSenderEmail(email: Email): string | undefined {
 }
 
 // Sent/Drafts rows name the recipient, not "me" (webmail 1.4.12).
-function getCounterpart(email: Email, showRecipient: boolean): { name: string; email?: string } {
+function getCounterpart(email: Email, showRecipient: boolean, unknownLabel: string): { name: string; email?: string } {
   if (showRecipient) {
     const to = email.to?.[0] ?? email.cc?.[0] ?? email.bcc?.[0];
     if (to) return { name: to.name || to.email, email: to.email };
   }
-  return { name: getSenderName(email), email: getSenderEmail(email) };
+  return { name: getSenderName(email, unknownLabel), email: getSenderEmail(email) };
 }
 
 function isUnread(email: Email): boolean {
@@ -128,7 +128,11 @@ const EmailRow = React.memo(function EmailRow({
   const timeFormat = useSettingsStore((s) => s.timeFormat);
   const locale = useLocaleStore((s) => s.locale);
   const tr = useLocaleStore((s) => s.t);
-  const { name: senderName, email: senderEmail } = getCounterpart(item, showRecipient);
+  const { name: senderName, email: senderEmail } = getCounterpart(
+    item,
+    showRecipient,
+    tr('email_viewer.unknown_sender', 'Unknown'),
+  );
   const unread = isUnread(item);
   const starred = isStarred(item);
   const pinned = isPinned(item);
@@ -493,12 +497,12 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
       }));
       const { imported, failed } = await importEmails(files, targetMailboxId);
       Alert.alert(
-        'Import',
+        t('email_list.import.title', 'Import'),
         failed > 0
-          ? `${imported} imported, ${failed} failed.`
+          ? t('email_list.import.partial', '{imported} imported, {failed} failed.', { imported, failed })
           : imported === 0
-            ? 'No messages were imported.'
+            ? t('email_list.import.none', 'No messages were imported.')
-            : `${imported} message${imported === 1 ? '' : 's'} imported.`,
+            : t('email_list.import.success', '{count, plural, one {# message imported.} other {# messages imported.}}', { count: imported }),
       );
     } finally {
       setImporting(false);
@@ -965,14 +969,23 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
       {/* Header */}
       {selectionMode ? (
         <View style={styles.header}>
-          <Pressable onPress={clearSelection} style={styles.headerButton}>
+          <Pressable
+            onPress={clearSelection}
+            style={styles.headerButton}
+            accessibilityRole="button"
+            accessibilityLabel={t('email_list.batch_actions.clear_selection', 'Clear selection')}
+          >
             <X size={20} color={c.text} />
           </Pressable>
-          <Text style={styles.headerTitle}>{selectedIds.size} selected</Text>
+          <Text style={styles.headerTitle}>
+            {t('email_list.batch_actions.selected_messages', '{count, plural, one {1 email} other {# emails}} selected', { count: selectedIds.size })}
+          </Text>
           <Pressable
             onPress={() => { void handleBulkStar(); }}
             style={styles.headerButton}
             hitSlop={6}
+            accessibilityRole="button"
+            accessibilityLabel={allSelectedAreStarred ? t('context_menu.unstar', 'Unstar') : t('context_menu.star', 'Star')}
           >
             <Star
               size={20}
@@ -984,6 +997,10 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
             onPress={() => { void handleBulkMarkReadToggle(); }}
             style={styles.headerButton}
             hitSlop={6}
+            accessibilityRole="button"
+            accessibilityLabel={allSelectedAreRead
+              ? t('email_list.batch_actions.mark_unread', 'Mark as unread')
+              : t('email_list.batch_actions.mark_read', 'Mark as read')}
           >
             {allSelectedAreRead ? (
               <MailIcon size={20} color={c.text} />
@@ -995,6 +1012,8 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
             onPress={() => setTagSheetOpen(true)}
             style={styles.headerButton}
             hitSlop={6}
+            accessibilityRole="button"
+            accessibilityLabel={t('context_menu.tag', 'Tag')}
           >
             <Tag size={20} color={c.text} />
           </Pressable>
@@ -1002,6 +1021,8 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
             onPress={() => setBatchMoveOpen(true)}
             style={styles.headerButton}
             hitSlop={6}
+            accessibilityRole="button"
+            accessibilityLabel={t('email_viewer.move', 'Move')}
           >
             <FolderInput size={20} color={c.text} />
           </Pressable>
@@ -1010,6 +1031,7 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
               onPress={() => { void handleBulkSpam(); }}
               style={styles.headerButton}
               hitSlop={6}
+              accessibilityRole="button"
               accessibilityLabel={inJunk ? t('context_menu.not_spam', 'Not spam') : t('context_menu.mark_as_spam', 'Report spam')}
             >
               {inJunk ? (
@@ -1024,6 +1046,8 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
               onPress={() => { void handleBulkArchive(); }}
               style={styles.headerButton}
               hitSlop={6}
+              accessibilityRole="button"
+              accessibilityLabel={t('context_menu.archive', 'Archive')}
             >
               <Archive size={20} color={c.text} />
             </Pressable>
@@ -1032,13 +1056,20 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
             onPress={() => { void handleBulkDelete(); }}
             style={styles.headerButton}
             hitSlop={6}
+            accessibilityRole="button"
+            accessibilityLabel={t('email_list.batch_actions.delete', 'Delete')}
           >
             <Trash2 size={20} color={c.text} />
           </Pressable>
         </View>
       ) : (
         <View style={styles.header}>
-          <Pressable onPress={() => setDrawerOpen(true)} style={styles.headerButton}>
+          <Pressable
+            onPress={() => setDrawerOpen(true)}
+            style={styles.headerButton}
+            accessibilityRole="button"
+            accessibilityLabel={t('sidebar.mobile.toggle_menu', 'Toggle menu')}
+          >
             <Menu size={20} color={c.textMuted} />
           </Pressable>
           <Text style={styles.headerTitle} numberOfLines={1}>
@@ -1050,6 +1081,8 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
             style={styles.headerButton}
             disabled={importing}
             hitSlop={6}
+            accessibilityRole="button"
+            accessibilityLabel={t('email_viewer.import_email', 'Import .eml or .zip')}
           >
             {importing ? (
               <ActivityIndicator size="small" color={c.textMuted} />
@@ -1067,7 +1100,14 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
 
       {/* Search bar (always visible) */}
       <View style={styles.searchBar}>
-        <Pressable style={styles.checkboxButton} onPress={toggleSelectAllVisible} hitSlop={6}>
+        <Pressable
+          style={styles.checkboxButton}
+          onPress={toggleSelectAllVisible}
+          hitSlop={6}
+          accessibilityRole="checkbox"
+          accessibilityLabel={t('email_list.batch_actions.select_all', 'Select all')}
+          accessibilityState={{ checked: allSelected ? true : selectionMode ? 'mixed' : false }}
+        >
           {allSelected ? (
             <SquareCheck size={18} color={c.primary} />
           ) : selectionMode ? (
@@ -1099,6 +1139,8 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
               onPress={() => { setSearchInput(''); setSearchQuery(''); }}
               hitSlop={8}
               style={styles.searchClearButton}
+              accessibilityRole="button"
+              accessibilityLabel={t('contacts.clear_search', 'Clear search')}
             >
               <X size={14} color={c.textMuted} />
             </Pressable>
@@ -1108,8 +1150,10 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
           style={styles.filterButton}
           onPress={() => setSortAscending(!sortAscending)}
           accessibilityRole="button"
-          accessibilityLabel={sortAscending ? 'Sorted oldest first' : 'Sorted newest first'}
+          accessibilityLabel={sortAscending
-          accessibilityHint="Reverses the mail sort order"
+            ? t('settings.appearance.message_list_order.direction.oldest_first', 'Oldest first')
+            : t('settings.appearance.message_list_order.direction.newest_first', 'Newest first')}
+          accessibilityHint={t('email_list.sort_toggle_hint', 'Reverses the mail sort order')}
         >
           {sortAscending ? (
             <ArrowUpNarrowWide size={18} color={c.primary} />
@@ -1120,6 +1164,9 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
         <Pressable
           style={[styles.filterButton, activeFilterCount > 0 && styles.filterButtonActive]}
           onPress={() => setFilterMenuOpen(true)}
+          accessibilityRole="button"
+          accessibilityLabel={t('advanced_search.advanced_filters_tooltip', 'Advanced search filters')}
+          accessibilityValue={activeFilterCount > 0 ? { text: String(activeFilterCount) } : undefined}
         >
           <Filter size={18} color={activeFilterCount > 0 ? c.primary : c.textMuted} />
           {activeFilterCount > 0 && (
@@ -1141,7 +1188,12 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
                     <Search size={12} color={c.textMuted} />
                     <Text style={styles.recentSearchText} numberOfLines={1}>{q}</Text>
                   </Pressable>
-                  <Pressable onPress={() => removeRecentSearch(q)} hitSlop={8}>
+                  <Pressable
+                    onPress={() => removeRecentSearch(q)}
+                    hitSlop={8}
+                    accessibilityRole="button"
+                    accessibilityLabel={t('advanced_search.suggestions_remove_recent', 'Remove from recent searches')}
+                  >
                     <X size={12} color={c.textMuted} />
                   </Pressable>
                 </View>
@@ -1202,28 +1254,40 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
             />
           ) : null}
           {filters.from ? (
-            <FilterChip label={`${t('advanced_search.from', 'From')}: ${filters.from}`} onRemove={() => setFilterField('from', undefined)} />
+            <FilterChip
+              label={t('email_list.filter_chip', '{field}: {value}', { field: t('advanced_search.from', 'From'), value: filters.from })}
+              onRemove={() => setFilterField('from', undefined)}
+            />
           ) : null}
           {filters.to ? (
-            <FilterChip label={`${t('advanced_search.to', 'To')}: ${filters.to}`} onRemove={() => setFilterField('to', undefined)} />
+            <FilterChip
+              label={t('email_list.filter_chip', '{field}: {value}', { field: t('advanced_search.to', 'To'), value: filters.to })}
+              onRemove={() => setFilterField('to', undefined)}
+            />
           ) : null}
           {filters.subject ? (
-            <FilterChip label={`${t('advanced_search.subject', 'Subject')}: ${filters.subject}`} onRemove={() => setFilterField('subject', undefined)} />
+            <FilterChip
+              label={t('email_list.filter_chip', '{field}: {value}', { field: t('advanced_search.subject', 'Subject'), value: filters.subject })}
+              onRemove={() => setFilterField('subject', undefined)}
+            />
           ) : null}
           {filters.body ? (
-            <FilterChip label={`${t('advanced_search.body', 'Body')}: ${filters.body}`} onRemove={() => setFilterField('body', undefined)} />
+            <FilterChip
+              label={t('email_list.filter_chip', '{field}: {value}', { field: t('advanced_search.body', 'Body'), value: filters.body })}
+              onRemove={() => setFilterField('body', undefined)}
+            />
           ) : null}
           {filters.dateAfter ? (
             <FilterChip
               icon={<CalendarDays size={12} color={c.textSecondary} />}
-              label={`${t('advanced_search.after', 'After')} ${filters.dateAfter}`}
+              label={t('email_list.filter_chip', '{field}: {value}', { field: t('advanced_search.date_after', 'After'), value: filters.dateAfter })}
               onRemove={() => setFilterField('dateAfter', undefined)}
             />
           ) : null}
           {filters.dateBefore ? (
             <FilterChip
               icon={<CalendarDays size={12} color={c.textSecondary} />}
-              label={`${t('advanced_search.before', 'Before')} ${filters.dateBefore}`}
+              label={t('email_list.filter_chip', '{field}: {value}', { field: t('advanced_search.date_before', 'Before'), value: filters.dateBefore })}
               onRemove={() => setFilterField('dateBefore', undefined)}
             />
           ) : null}
@@ -1232,7 +1296,7 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
               icon={filters.isUnread
                 ? <MailIcon size={12} color={c.textSecondary} />
                 : <MailOpen size={12} color={c.textSecondary} />}
-              label={filters.isUnread ? t('email_list.unread', 'Unread') : t('advanced_search.read', 'Read')}
+              label={filters.isUnread ? t('advanced_search.unread', 'Unread') : t('advanced_search.read', 'Read')}
               onRemove={() => cycleTriStateTo('isUnread', undefined)}
             />
           )}
@@ -1259,6 +1323,7 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
             }}
             style={styles.clearAllButton}
             hitSlop={6}
+            accessibilityRole="button"
           >
             <Text style={styles.clearAllText}>{t('advanced_search.clear', 'Clear')}</Text>
           </Pressable>
@@ -1352,7 +1417,10 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
           </Text>
           {currentMailbox && !hasActiveSearchOrFilter ? (
             <Text style={styles.hintText}>
-              {currentMailbox.totalEmails} {t('email_list.total', 'total')} · {currentMailbox.unreadEmails} {t('email_list.unread', 'unread')}
+              {t('email_list.folder_counts', '{total} total · {unread} unread', {
+                total: currentMailbox.totalEmails,
+                unread: currentMailbox.unreadEmails,
+              })}
             </Text>
           ) : null}
         </View>
@@ -1377,6 +1445,8 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
       <Pressable
         onPress={onComposePress}
         style={({ pressed }) => [styles.fab, pressed && styles.fabPressed]}
+        accessibilityRole="button"
+        accessibilityLabel={t('sidebar.mobile.compose', 'Compose')}
       >
         <SquarePen size={24} color={c.background} />
       </Pressable>
@@ -1395,20 +1465,23 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
             <TouchableWithoutFeedback>
               <View style={styles.filterMenu}>
                 <View style={styles.filterMenuHeader}>
-                  <Text style={styles.filterMenuTitle}>Filter emails</Text>
+                  <Text style={styles.filterMenuTitle}>{t('email_list.filter_title', 'Filter emails')}</Text>
                   <View style={styles.filterMenuHeaderActions}>
                     <Pressable
                       onPress={() => setFilters({})}
                       style={styles.filterMenuHeaderBtn}
                       hitSlop={6}
+                      accessibilityRole="button"
                     >
                       <RotateCcw size={12} color={c.textSecondary} />
-                      <Text style={styles.filterMenuHeaderBtnText}>Clear</Text>
+                      <Text style={styles.filterMenuHeaderBtnText}>{t('advanced_search.clear', 'Clear')}</Text>
                     </Pressable>
                     <Pressable
                       onPress={() => setFilterMenuOpen(false)}
                       style={styles.filterMenuClose}
                       hitSlop={6}
+                      accessibilityRole="button"
+                      accessibilityLabel={t('common.close', 'Close')}
                     >
                       <X size={16} color={c.textSecondary} />
                     </Pressable>
@@ -1418,11 +1491,11 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
                 <ScrollView contentContainerStyle={styles.filterMenuBody} keyboardShouldPersistTaps="handled">
                   <View style={styles.filterFieldRow}>
                     <View style={styles.filterFieldHalf}>
-                      <Text style={styles.filterFieldLabel}>From</Text>
+                      <Text style={styles.filterFieldLabel}>{t('advanced_search.from', 'From')}</Text>
                       <TextInput
                         value={filters.from ?? ''}
                         onChangeText={(v) => setFilterField('from', v)}
-                        placeholder="sender@example.com"
+                        placeholder={t('advanced_search.from_placeholder', 'Sender email or name')}
                         placeholderTextColor={c.textMuted}
                         autoCapitalize="none"
                         autoCorrect={false}
@@ -1430,11 +1503,11 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
                       />
                     </View>
                     <View style={styles.filterFieldHalf}>
-                      <Text style={styles.filterFieldLabel}>To</Text>
+                      <Text style={styles.filterFieldLabel}>{t('advanced_search.to', 'To')}</Text>
                       <TextInput
                         value={filters.to ?? ''}
                         onChangeText={(v) => setFilterField('to', v)}
-                        placeholder="recipient@example.com"
+                        placeholder={t('advanced_search.to_placeholder', 'Recipient email or name')}
                         placeholderTextColor={c.textMuted}
                         autoCapitalize="none"
                         autoCorrect={false}
@@ -1496,7 +1569,7 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
 
                   <View style={styles.filterFieldRow}>
                     <View style={styles.filterFieldHalf}>
-                      <Text style={styles.filterFieldLabel}>After</Text>
+                      <Text style={styles.filterFieldLabel}>{t('advanced_search.date_after', 'After')}</Text>
                       <Pressable
                         style={styles.filterDateButton}
                         onPress={() => setDatePickerField('dateAfter')}
@@ -1509,6 +1582,8 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
                           <Pressable
                             onPress={() => setFilterField('dateAfter', undefined)}
                             hitSlop={6}
+                            accessibilityRole="button"
+                            accessibilityLabel={t('advanced_search.clear', 'Clear')}
                           >
                             <X size={14} color={c.textMuted} />
                           </Pressable>
@@ -1516,7 +1591,7 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
                       </Pressable>
                     </View>
                     <View style={styles.filterFieldHalf}>
-                      <Text style={styles.filterFieldLabel}>Before</Text>
+                      <Text style={styles.filterFieldLabel}>{t('advanced_search.date_before', 'Before')}</Text>
                       <Pressable
                         style={styles.filterDateButton}
                         onPress={() => setDatePickerField('dateBefore')}
@@ -1529,6 +1604,8 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
                           <Pressable
                             onPress={() => setFilterField('dateBefore', undefined)}
                             hitSlop={6}
+                            accessibilityRole="button"
+                            accessibilityLabel={t('advanced_search.clear', 'Clear')}
                           >
                             <X size={14} color={c.textMuted} />
                           </Pressable>
@@ -1540,13 +1617,13 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
                   <View style={styles.filterToggleGroup}>
                     <TriToggle
                       icon={<Paperclip size={14} color={c.textSecondary} />}
-                      label="Has attachment"
+                      label={t('email_list.has_attachment', 'Has attachment')}
                       value={filters.hasAttachment}
                       onPress={() => cycleTriState('hasAttachment')}
                     />
                     <TriToggle
                       icon={<Star size={14} color={c.starred} fill={filters.isStarred ? c.starred : 'transparent'} />}
-                      label="Starred"
+                      label={t('advanced_search.starred', 'Starred')}
                       value={filters.isStarred}
                       onPress={() => cycleTriState('isStarred')}
                     />
@@ -1558,7 +1635,7 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
                           <MailIcon size={14} color={c.textSecondary} />
                         )
                       }
-                      label={filters.isUnread === false ? 'Read' : 'Unread'}
+                      label={filters.isUnread === false ? t('advanced_search.read', 'Read') : t('advanced_search.unread', 'Unread')}
                       value={filters.isUnread}
                       onPress={() => cycleTriState('isUnread')}
                     />
@@ -1588,7 +1665,7 @@ export default function EmailListScreen({ onEmailPress, onComposePress }: EmailL
               <View style={styles.pickerSheet}>
                 <View style={styles.pickerHeader}>
                   <Pressable onPress={() => setDatePickerField(null)} hitSlop={8}>
-                    <Text style={styles.pickerDone}>Done</Text>
+                    <Text style={styles.pickerDone}>{t('common.done', 'Done')}</Text>
                   </Pressable>
                 </View>
                 <DateTimePicker
@@ -1664,12 +1741,24 @@ function FilterChip({
 }) {
   const c = useColors();
   const styles = React.useMemo(() => makeStyles(c), [c]);
+  const t = useLocaleStore((s) => s.t);
   return (
-    <Pressable style={styles.chip} onPress={onPress} disabled={!onPress}>
+    <Pressable
+      style={styles.chip}
+      onPress={onPress}
+      disabled={!onPress}
+      accessibilityRole={onPress ? 'button' : undefined}
+    >
       {icon}
       <Text style={styles.chipText} numberOfLines={1}>{label}</Text>
       {onRemove ? (
-        <Pressable onPress={onRemove} hitSlop={8} style={styles.chipRemove}>
+        <Pressable
+          onPress={onRemove}
+          hitSlop={8}
+          style={styles.chipRemove}
+          accessibilityRole="button"
+          accessibilityLabel={t('email_list.remove_filter', 'Remove filter {label}', { label })}
+        >
           <X size={11} color={c.textMuted} />
         </Pressable>
       ) : null}
@@ -1681,7 +1770,12 @@ function ScopeChip({ label, active, onPress }: { label: string; active: boolean;
   const c = useColors();
   const styles = React.useMemo(() => makeStyles(c), [c]);
   return (
-    <Pressable onPress={onPress} style={[styles.triToggle, active && styles.triToggleOn]}>
+    <Pressable
+      onPress={onPress}
+      style={[styles.triToggle, active && styles.triToggleOn]}
+      accessibilityRole="button"
+      accessibilityState={{ selected: active }}
+    >
       <Text style={[styles.triToggleText, active && styles.triToggleTextOn]} numberOfLines={1}>{label}</Text>
     </Pressable>
   );
@@ -1710,6 +1804,8 @@ function TriToggle({
         state === 'on' && styles.triToggleOn,
         state === 'off' && styles.triToggleOff,
       ]}
+      accessibilityRole="button"
+      accessibilityState={{ selected: state !== 'unset' }}
     >
       {icon}
       <Text

src/screens/EmailSourceScreen.tsx

@@ -67,7 +67,13 @@ export default function EmailSourceScreen({ route, navigation }: Props) {
   return (
     <SafeAreaView style={styles.container} edges={['top']}>
       <View style={styles.header}>
-        <Pressable onPress={() => navigation.goBack()} style={styles.headerBtn} hitSlop={8}>
+        <Pressable
+          onPress={() => navigation.goBack()}
+          style={styles.headerBtn}
+          hitSlop={8}
+          accessibilityRole="button"
+          accessibilityLabel={t('common.back', 'Back')}
+        >
           <ArrowLeft size={22} color={c.text} />
         </Pressable>
         <Text style={styles.headerTitle} numberOfLines={1}>
@@ -82,7 +88,14 @@ export default function EmailSourceScreen({ route, navigation }: Props) {
         >
           {copied ? <Check size={20} color={c.success} /> : <Copy size={20} color={raw ? c.text : c.textMuted} />}
         </Pressable>
-        <Pressable onPress={onShare} style={styles.headerBtn} hitSlop={8} disabled={!raw}>
+        <Pressable
+          onPress={onShare}
+          style={styles.headerBtn}
+          hitSlop={8}
+          disabled={!raw}
+          accessibilityRole="button"
+          accessibilityLabel={t('email_viewer.attachment_actions.share', 'Share')}
+        >
           <Share2 size={20} color={raw ? c.text : c.textMuted} />
         </Pressable>
       </View>

src/screens/ScheduledScreen.tsx

@@ -277,7 +277,13 @@ export default function ScheduledScreen({ navigation }: Props) {
   return (
     <SafeAreaView style={styles.container} edges={['top']}>
       <View style={styles.header}>
-        <Pressable onPress={() => navigation.goBack()} style={styles.headerBtn} hitSlop={8}>
+        <Pressable
+          onPress={() => navigation.goBack()}
+          style={styles.headerBtn}
+          hitSlop={8}
+          accessibilityRole="button"
+          accessibilityLabel={t('common.back', 'Back')}
+        >
           <ArrowLeft size={22} color={c.text} />
         </Pressable>
         <Text style={styles.headerTitle} numberOfLines={1}>{t('sidebar.scheduled', 'Scheduled')}</Text>