lib/core/db_schema_version.dart

@@ -1 +1 @@
-const int dbSchemaVersion = 33;
+const int dbSchemaVersion = 34;

lib/core/models/user_preferences.dart

@@ -0,0 +1,6 @@
+enum MenuPosition { bottom, top }
+
+class UserPreferences {
+  const UserPreferences({this.menuPosition = MenuPosition.bottom});
+  final MenuPosition menuPosition;
+}

lib/core/repositories/user_preferences_repository.dart

@@ -0,0 +1,6 @@
+import 'package:sharedinbox/core/models/user_preferences.dart';
+
+abstract class UserPreferencesRepository {
+  Stream<UserPreferences> observePreferences();
+  Future<void> updateMenuPosition(MenuPosition position);
+}

lib/data/db/database.dart

@@ -307,6 +307,17 @@ class LocalSieveApplied extends Table {
   Set<Column> get primaryKey => {accountId, messageId};
 }
 
+/// App-wide user preferences, stored as a singleton row (id always 1).
+@DataClassName('UserPreferencesRow')
+class UserPreferences extends Table {
+  IntColumn get id => integer()();
+  // 'bottom' (default) | 'top'
+  TextColumn get menuPosition => text().withDefault(const Constant('bottom'))();
+
+  @override
+  Set<Column> get primaryKey => {id};
+}
+
 // ── Database ──────────────────────────────────────────────────────────────────
 
 @DriftDatabase(
@@ -327,6 +338,7 @@ class LocalSieveApplied extends Table {
     LocalSieveScripts,
     LocalSieveApplied,
     ShareKeys,
+    UserPreferences,
   ],
 )
 class AppDatabase extends _$AppDatabase {
@@ -578,6 +590,9 @@ class AppDatabase extends _$AppDatabase {
             await m.addColumn(syncLogs, syncLogs.errorStackTrace);
             await m.addColumn(syncLogs, syncLogs.isPermanent);
           }
+          if (from < 34) {
+            await m.createTable(userPreferences);
+          }
         },
       );
 }

lib/data/repositories/user_preferences_repository_impl.dart

@@ -0,0 +1,38 @@
+import 'package:drift/drift.dart';
+import 'package:sharedinbox/core/models/user_preferences.dart' as pref;
+import 'package:sharedinbox/core/repositories/user_preferences_repository.dart';
+import 'package:sharedinbox/data/db/database.dart';
+
+class UserPreferencesRepositoryImpl implements UserPreferencesRepository {
+  UserPreferencesRepositoryImpl(this._db);
+
+  final AppDatabase _db;
+  static const _rowId = 1;
+
+  @override
+  Stream<pref.UserPreferences> observePreferences() {
+    return (_db.select(_db.userPreferences)..where((t) => t.id.equals(_rowId)))
+        .watchSingleOrNull()
+        .map(_rowToModel);
+  }
+
+  @override
+  Future<void> updateMenuPosition(pref.MenuPosition position) async {
+    await _db.into(_db.userPreferences).insertOnConflictUpdate(
+          UserPreferencesCompanion(
+            id: const Value(_rowId),
+            menuPosition: Value(position.name),
+          ),
+        );
+  }
+
+  static pref.UserPreferences _rowToModel(UserPreferencesRow? row) {
+    if (row == null) return const pref.UserPreferences();
+    return pref.UserPreferences(
+      menuPosition: pref.MenuPosition.values.firstWhere(
+        (e) => e.name == row.menuPosition,
+        orElse: () => pref.MenuPosition.bottom,
+      ),
+    );
+  }
+}

lib/di.dart

@@ -5,6 +5,7 @@ import 'package:http/http.dart' as http;
 import 'package:sharedinbox/core/models/account.dart' as model;
 import 'package:sharedinbox/core/models/email.dart';
 import 'package:sharedinbox/core/models/undo_action.dart';
+import 'package:sharedinbox/core/models/user_preferences.dart';
 import 'package:sharedinbox/core/repositories/account_repository.dart';
 import 'package:sharedinbox/core/repositories/draft_repository.dart';
 import 'package:sharedinbox/core/repositories/email_repository.dart';
@@ -13,6 +14,7 @@ import 'package:sharedinbox/core/repositories/search_history_repository.dart';
 import 'package:sharedinbox/core/repositories/share_key_repository.dart';
 import 'package:sharedinbox/core/repositories/sync_log_repository.dart';
 import 'package:sharedinbox/core/repositories/undo_repository.dart';
+import 'package:sharedinbox/core/repositories/user_preferences_repository.dart';
 import 'package:sharedinbox/core/services/account_discovery_service.dart';
 import 'package:sharedinbox/core/services/connection_test_service.dart';
 import 'package:sharedinbox/core/services/managesieve_probe_service.dart';
@@ -21,7 +23,8 @@ import 'package:sharedinbox/core/services/undo_service.dart';
 import 'package:sharedinbox/core/storage/secure_storage.dart';
 import 'package:sharedinbox/core/sync/account_sync_manager.dart';
 import 'package:sharedinbox/core/sync/reliability_runner.dart';
-import 'package:sharedinbox/data/db/database.dart' hide Email, EmailBody;
+import 'package:sharedinbox/data/db/database.dart'
+    hide Email, EmailBody, UserPreferences;
 import 'package:sharedinbox/data/db/local_sieve_repository.dart';
 import 'package:sharedinbox/data/imap/imap_client_factory.dart';
 import 'package:sharedinbox/data/jmap/sieve_repository.dart';
@@ -33,6 +36,7 @@ import 'package:sharedinbox/data/repositories/search_history_repository_impl.dar
 import 'package:sharedinbox/data/repositories/share_key_repository_impl.dart';
 import 'package:sharedinbox/data/repositories/sync_log_repository_impl.dart';
 import 'package:sharedinbox/data/repositories/undo_repository_impl.dart';
+import 'package:sharedinbox/data/repositories/user_preferences_repository_impl.dart';
 import 'package:sharedinbox/data/storage/flutter_secure_storage_impl.dart';
 
 /// Swappable IMAP connection factory — override in tests to use plaintext.
@@ -227,3 +231,13 @@ final accountConnectionStatusProvider =
       .read(connectionTestServiceProvider)
       .testConnection(account, password);
 });
+
+final userPreferencesRepositoryProvider =
+    Provider<UserPreferencesRepository>((ref) {
+  return UserPreferencesRepositoryImpl(ref.watch(dbProvider));
+});
+
+final userPreferencesProvider =
+    StreamProvider.autoDispose<UserPreferences>((ref) {
+  return ref.watch(userPreferencesRepositoryProvider).observePreferences();
+});

lib/ui/router.dart

@@ -20,6 +20,7 @@ import 'package:sharedinbox/ui/screens/sieve_scripts_screen.dart';
 import 'package:sharedinbox/ui/screens/sync_log_screen.dart';
 import 'package:sharedinbox/ui/screens/thread_detail_screen.dart';
 import 'package:sharedinbox/ui/screens/undo_log_screen.dart';
+import 'package:sharedinbox/ui/screens/user_preferences_screen.dart';
 import 'package:sharedinbox/ui/widgets/undo_shell.dart';
 
 final router = GoRouter(
@@ -56,6 +57,10 @@ final router = GoRouter(
               path: 'about',
               builder: (ctx, state) => const AboutScreen(),
             ),
+            GoRoute(
+              path: 'preferences',
+              builder: (ctx, state) => const UserPreferencesScreen(),
+            ),
             GoRoute(
               path: ':accountId/edit',
               builder: (ctx, state) => EditAccountScreen(

lib/ui/screens/account_list_screen.dart

@@ -67,6 +67,14 @@ class AccountListScreen extends ConsumerWidget {
                 unawaited(context.push('/accounts/about'));
               },
             ),
+            ListTile(
+              leading: const Icon(Icons.settings),
+              title: const Text('Preferences'),
+              onTap: () {
+                Navigator.pop(context); // Close drawer
+                unawaited(context.push('/accounts/preferences'));
+              },
+            ),
           ],
         ),
       ),

lib/ui/screens/email_list_screen.dart

@@ -8,6 +8,7 @@ import 'package:intl/intl.dart';
 import 'package:sharedinbox/core/models/account.dart';
 import 'package:sharedinbox/core/models/email.dart';
 import 'package:sharedinbox/core/models/undo_action.dart';
+import 'package:sharedinbox/core/models/user_preferences.dart';
 import 'package:sharedinbox/core/repositories/email_repository.dart';
 import 'package:sharedinbox/di.dart';
 import 'package:sharedinbox/ui/screens/email_action_helpers.dart';
@@ -148,16 +149,21 @@ class _EmailListScreenState extends ConsumerState<EmailListScreen> {
   Widget build(BuildContext context) {
     final repo = ref.watch(emailRepositoryProvider);
     final accountAsync = ref.watch(accountByIdProvider(widget.accountId));
+    final prefs =
+        ref.watch(userPreferencesProvider).value ?? const UserPreferences();
+    final menuAtBottom = prefs.menuPosition == MenuPosition.bottom;
 
     return Scaffold(
-      appBar: _buildAppBar(repo, accountAsync),
+      appBar: _buildAppBar(repo, accountAsync, menuAtBottom: menuAtBottom),
       drawer: _selecting
           ? null
           : FolderDrawer(
               accountId: widget.accountId,
               currentMailboxPath: widget.mailboxPath,
             ),
-      bottomNavigationBar: _selecting ? _selectionBottomBar() : null,
+      bottomNavigationBar: _selecting
+          ? _selectionBottomBar()
+          : (menuAtBottom ? _folderNavBottomBar() : null),
       body: Column(
         children: [
           _buildSyncErrorBanner(),
@@ -173,12 +179,14 @@ class _EmailListScreenState extends ConsumerState<EmailListScreen> {
 
   PreferredSizeWidget _buildAppBar(
     EmailRepository emailRepo,
-    AsyncValue<Account?> accountAsync,
-  ) {
+    AsyncValue<Account?> accountAsync, {
+    required bool menuAtBottom,
+  }) {
     final selectionCount =
         _searching ? _selectedSearchIds.length : _selectedThreadIds.length;
 
     return AppBar(
+      automaticallyImplyLeading: !menuAtBottom,
       leading: _selecting
           ? IconButton(
               icon: const Icon(Icons.close),
@@ -301,6 +309,20 @@ class _EmailListScreenState extends ConsumerState<EmailListScreen> {
     );
   }
 
+  Widget _folderNavBottomBar() {
+    return BottomAppBar(
+      child: Row(
+        children: [
+          IconButton(
+            icon: const Icon(Icons.menu),
+            tooltip: 'Open folders',
+            onPressed: () => Scaffold.of(context).openDrawer(),
+          ),
+        ],
+      ),
+    );
+  }
+
   Widget _selectionBottomBar() {
     return BottomAppBar(
       child: Row(

lib/ui/screens/mailbox_list_screen.dart

@@ -4,6 +4,7 @@ import 'package:go_router/go_router.dart';
 
 import 'package:sharedinbox/core/models/email.dart';
 import 'package:sharedinbox/core/models/mailbox.dart';
+import 'package:sharedinbox/core/models/user_preferences.dart';
 import 'package:sharedinbox/core/repositories/email_repository.dart';
 import 'package:sharedinbox/di.dart';
 import 'package:sharedinbox/ui/widgets/folder_drawer.dart';
@@ -17,8 +18,12 @@ class MailboxListScreen extends ConsumerWidget {
     final mailboxRepo = ref.watch(mailboxRepositoryProvider);
     final emailRepo = ref.watch(emailRepositoryProvider);
     final accountAsync = ref.watch(accountByIdProvider(accountId));
+    final prefs =
+        ref.watch(userPreferencesProvider).value ?? const UserPreferences();
+    final menuAtBottom = prefs.menuPosition == MenuPosition.bottom;
     return Scaffold(
       appBar: AppBar(
+        automaticallyImplyLeading: !menuAtBottom,
         title: const Text('Folders'),
         actions: [
           IconButton(
@@ -42,6 +47,19 @@ class MailboxListScreen extends ConsumerWidget {
         ],
       ),
       drawer: FolderDrawer(accountId: accountId),
+      bottomNavigationBar: menuAtBottom
+          ? BottomAppBar(
+              child: Row(
+                children: [
+                  IconButton(
+                    icon: const Icon(Icons.menu),
+                    tooltip: 'Open folders',
+                    onPressed: () => Scaffold.of(context).openDrawer(),
+                  ),
+                ],
+              ),
+            )
+          : null,
       body: Column(
         children: [
           // ── Failed-mutation banner ───────────────────────────────────────

lib/ui/screens/user_preferences_screen.dart

@@ -0,0 +1,67 @@
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import 'package:sharedinbox/core/models/user_preferences.dart';
+import 'package:sharedinbox/di.dart';
+
+class UserPreferencesScreen extends ConsumerWidget {
+  const UserPreferencesScreen({super.key});
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final prefsAsync = ref.watch(userPreferencesProvider);
+
+    return Scaffold(
+      appBar: AppBar(title: const Text('Preferences')),
+      body: prefsAsync.when(
+        loading: () => const Center(child: CircularProgressIndicator()),
+        error: (_, __) =>
+            const Center(child: Text('Error loading preferences')),
+        data: (prefs) => ListView(
+          children: [
+            ListTile(
+              title: Text(
+                'Menu bar position',
+                style: Theme.of(context).textTheme.titleSmall,
+              ),
+              subtitle: const Text(
+                'Where the folder navigation menu is shown in the mailbox view.',
+              ),
+            ),
+            RadioGroup<MenuPosition>(
+              groupValue: prefs.menuPosition,
+              onChanged: (value) {
+                if (value == null) return;
+                unawaited(
+                  ref
+                      .read(userPreferencesRepositoryProvider)
+                      .updateMenuPosition(value),
+                );
+              },
+              child: const Column(
+                children: [
+                  RadioListTile<MenuPosition>(
+                    title: Text('Bottom (default)'),
+                    subtitle: Text(
+                      'Open folder navigation from a button at the bottom of the screen.',
+                    ),
+                    value: MenuPosition.bottom,
+                  ),
+                  RadioListTile<MenuPosition>(
+                    title: Text('Top'),
+                    subtitle: Text(
+                      'Open folder navigation from the hamburger icon in the top bar.',
+                    ),
+                    value: MenuPosition.top,
+                  ),
+                ],
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}

scripts/check_coverage.dart

@@ -20,7 +20,9 @@ const _noCode = {
   'lib/core/repositories/sync_log_repository.dart',
   'lib/core/repositories/undo_repository.dart',
   'lib/core/repositories/search_history_repository.dart',
+  'lib/core/repositories/user_preferences_repository.dart',
   'lib/core/models/undo_action.dart',
+  'lib/core/models/user_preferences.dart',
   'lib/core/storage/secure_storage.dart',
 };
 
@@ -73,6 +75,8 @@ const _excluded = {
   'lib/data/repositories/sync_log_repository_impl.dart',
   'lib/data/repositories/undo_repository_impl.dart',
   'lib/data/repositories/search_history_repository_impl.dart',
+  'lib/data/repositories/user_preferences_repository_impl.dart',
+  'lib/ui/screens/user_preferences_screen.dart',
   'lib/core/services/update_service.dart',
 };
 

test/unit/migration_test.dart

@@ -14,7 +14,7 @@ void main() {
   group('Migration', () {
     test('schemaVersion matches expected value', () async {
       final db = AppDatabase(NativeDatabase.memory());
-      expect(db.schemaVersion, 33);
+      expect(db.schemaVersion, 34);
       await db.close();
     });
 
@@ -199,6 +199,9 @@ void main() {
       expect(syncLogColumns, contains('error_stack_trace'));
       expect(syncLogColumns, contains('is_permanent'));
 
+      // v34: user_preferences table.
+      await db.customSelect('SELECT count(*) FROM user_preferences').get();
+
       await db.close();
       if (dbFile.existsSync()) dbFile.deleteSync();
     });
@@ -391,11 +394,14 @@ void main() {
       expect(syncLogColumns, contains('error_stack_trace'));
       expect(syncLogColumns, contains('is_permanent'));
 
+      // v34: user_preferences table.
+      await db.customSelect('SELECT count(*) FROM user_preferences').get();
+
       await db.close();
       if (dbFile.existsSync()) dbFile.deleteSync();
     });
 
-    test('fresh install creates all tables at schemaVersion 33', () async {
+    test('fresh install creates all tables at schemaVersion 34', () async {
       final db = AppDatabase(NativeDatabase.memory());
       await db.select(db.accounts).get();
 
@@ -422,6 +428,7 @@ void main() {
           'local_sieve_scripts', // v29
           'share_keys', // v31
           'local_sieve_applied', // v32
+          'user_preferences', // v34
         ]),
       );
 

test/widget/email_list_screen_test.dart

@@ -316,7 +316,7 @@ void main() {
       await tester.pumpAndSettle();
 
       expect(find.text('INBOX'), findsOneWidget);
-      expect(find.byType(BottomAppBar), findsNothing);
+      expect(find.byIcon(Icons.close), findsNothing);
     });
 
     testWidgets('tapping clear icon in search bar clears results', (

test/widget/helpers.dart

@@ -14,6 +14,7 @@ import 'package:sharedinbox/core/models/discovery_result.dart';
 import 'package:sharedinbox/core/models/draft.dart';
 import 'package:sharedinbox/core/models/email.dart';
 import 'package:sharedinbox/core/models/mailbox.dart';
+import 'package:sharedinbox/core/models/user_preferences.dart';
 import 'package:sharedinbox/core/repositories/account_repository.dart';
 import 'package:sharedinbox/core/repositories/draft_repository.dart';
 import 'package:sharedinbox/core/repositories/email_repository.dart';
@@ -21,6 +22,7 @@ import 'package:sharedinbox/core/repositories/mailbox_repository.dart';
 import 'package:sharedinbox/core/repositories/search_history_repository.dart';
 import 'package:sharedinbox/core/repositories/share_key_repository.dart';
 import 'package:sharedinbox/core/repositories/sync_log_repository.dart';
+import 'package:sharedinbox/core/repositories/user_preferences_repository.dart';
 import 'package:sharedinbox/core/services/account_discovery_service.dart';
 import 'package:sharedinbox/core/services/connection_test_service.dart';
 import 'package:sharedinbox/core/services/managesieve_probe_service.dart';
@@ -39,6 +41,7 @@ import 'package:sharedinbox/ui/screens/email_list_screen.dart';
 import 'package:sharedinbox/ui/screens/mailbox_list_screen.dart';
 import 'package:sharedinbox/ui/screens/search_screen.dart';
 import 'package:sharedinbox/ui/screens/thread_detail_screen.dart';
+import 'package:sharedinbox/ui/screens/user_preferences_screen.dart';
 
 // ---------------------------------------------------------------------------
 // Fake repositories
@@ -431,6 +434,10 @@ Widget buildApp({
             path: 'send',
             builder: (ctx, state) => const AccountSendScreen(),
           ),
+          GoRoute(
+            path: 'preferences',
+            builder: (ctx, state) => const UserPreferencesScreen(),
+          ),
           GoRoute(
             path: ':accountId/edit',
             builder: (ctx, state) => EditAccountScreen(
@@ -515,6 +522,9 @@ Widget buildApp({
       syncLogRepositoryProvider.overrideWithValue(
         const NoOpSyncLogRepository(),
       ),
+      userPreferencesRepositoryProvider.overrideWithValue(
+        FakeUserPreferencesRepository(),
+      ),
       ...overrides,
       manageSieveProbeServiceProvider.overrideWith(
         (ref) => _NoOpManageSieveProbeService(),
@@ -611,6 +621,23 @@ Email testEmail({
       listUnsubscribeHeader: listUnsubscribeHeader,
     );
 
+class FakeUserPreferencesRepository implements UserPreferencesRepository {
+  FakeUserPreferencesRepository({
+    this.menuPosition = MenuPosition.bottom,
+  });
+
+  MenuPosition menuPosition;
+
+  @override
+  Stream<UserPreferences> observePreferences() =>
+      Stream.value(UserPreferences(menuPosition: menuPosition));
+
+  @override
+  Future<void> updateMenuPosition(MenuPosition position) async {
+    menuPosition = position;
+  }
+}
+
 class FakeSearchHistoryRepository implements SearchHistoryRepository {
   final List<String> _history = [];
 

test/widget/user_preferences_screen_test.dart

@@ -0,0 +1,61 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+import 'package:sharedinbox/core/models/user_preferences.dart';
+import 'package:sharedinbox/di.dart';
+import 'package:sharedinbox/ui/screens/user_preferences_screen.dart';
+
+import 'helpers.dart';
+
+void main() {
+  group('UserPreferencesScreen', () {
+    testWidgets('shows both menu position options', (tester) async {
+      await tester.pumpWidget(
+        buildApp(
+          initialLocation: '/accounts/preferences',
+          overrides: baseOverrides(),
+        ),
+      );
+      await tester.pumpAndSettle();
+
+      expect(find.text('Menu bar position'), findsOneWidget);
+      expect(find.text('Bottom (default)'), findsOneWidget);
+      expect(find.text('Top'), findsOneWidget);
+    });
+
+    testWidgets('bottom option is selected by default', (tester) async {
+      await tester.pumpWidget(
+        buildApp(
+          initialLocation: '/accounts/preferences',
+          overrides: baseOverrides(),
+        ),
+      );
+      await tester.pumpAndSettle();
+
+      final radioGroup = find.byType(RadioGroup<MenuPosition>);
+      final widget = tester.widget<RadioGroup<MenuPosition>>(radioGroup);
+      expect(widget.groupValue, MenuPosition.bottom);
+    });
+
+    testWidgets('tapping Top option updates the repo', (tester) async {
+      await tester.pumpWidget(
+        buildApp(
+          initialLocation: '/accounts/preferences',
+          overrides: baseOverrides(),
+        ),
+      );
+      await tester.pumpAndSettle();
+
+      await tester.tap(find.text('Top'));
+      await tester.pumpAndSettle();
+
+      final repo = ProviderScope.containerOf(
+        tester.element(find.byType(UserPreferencesScreen)),
+      ).read(userPreferencesRepositoryProvider)
+          as FakeUserPreferencesRepository;
+
+      expect(repo.menuPosition, MenuPosition.top);
+    });
+  });
+}