diff --git a/core/lib/core.dart b/core/lib/core.dart
index 26e13b64f..d9a84ed79 100644
--- a/core/lib/core.dart
+++ b/core/lib/core.dart
@@ -49,7 +49,6 @@ export 'utils/platform_info.dart';
 export 'utils/file_utils.dart';
 export 'utils/option_param_mixin.dart';
 export 'utils/print_utils.dart';
-export 'utils/broadcast_channel/broadcast_channel.dart';
 export 'utils/list_utils.dart';
 export 'utils/mail/domain.dart';
 export 'utils/mail/mail_address.dart';
diff --git a/core/lib/utils/broadcast_channel/broadcast_channel.dart b/core/lib/utils/broadcast_channel/broadcast_channel.dart
deleted file mode 100644
index 6ab539e56..000000000
--- a/core/lib/utils/broadcast_channel/broadcast_channel.dart
+++ /dev/null
@@ -1 +0,0 @@
-export 'broadcast_channel_stub.dart' if (dart.library.html) 'broadcast_channel_web.dart';
\ No newline at end of file
diff --git a/core/lib/utils/broadcast_channel/broadcast_channel_stub.dart b/core/lib/utils/broadcast_channel/broadcast_channel_stub.dart
deleted file mode 100644
index 0bea5d512..000000000
--- a/core/lib/utils/broadcast_channel/broadcast_channel_stub.dart
+++ /dev/null
@@ -1,7 +0,0 @@
-class BroadcastChannel {
-  final String name;
-
-  BroadcastChannel(this.name);
-
-  Stream<dynamic> get onMessage => const Stream.empty();
-}
\ No newline at end of file
diff --git a/core/lib/utils/broadcast_channel/broadcast_channel_web.dart b/core/lib/utils/broadcast_channel/broadcast_channel_web.dart
deleted file mode 100644
index 4235926e2..000000000
--- a/core/lib/utils/broadcast_channel/broadcast_channel_web.dart
+++ /dev/null
@@ -1 +0,0 @@
-export 'dart:html' show BroadcastChannel;
\ No newline at end of file
diff --git a/lib/features/offline_mode/bindings/sending_email_interactor_bindings.dart b/lib/features/offline_mode/bindings/sending_email_interactor_bindings.dart
deleted file mode 100644
index d3a137681..000000000
--- a/lib/features/offline_mode/bindings/sending_email_interactor_bindings.dart
+++ /dev/null
@@ -1,145 +0,0 @@
-import 'package:core/data/model/source_type/data_source_type.dart';
-import 'package:core/presentation/resources/image_paths.dart';
-import 'package:core/utils/file_utils.dart';
-import 'package:core/utils/preview_eml_file_utils.dart';
-import 'package:core/utils/print_utils.dart';
-import 'package:get/get.dart';
-import 'package:tmail_ui_user/features/base/interactors_bindings.dart';
-import 'package:tmail_ui_user/features/caching/utils/local_storage_manager.dart';
-import 'package:tmail_ui_user/features/caching/utils/session_storage_manager.dart';
-import 'package:tmail_ui_user/features/composer/domain/usecases/send_email_interactor.dart';
-import 'package:tmail_ui_user/features/email/data/datasource/email_datasource.dart';
-import 'package:tmail_ui_user/features/email/data/datasource/html_datasource.dart';
-import 'package:tmail_ui_user/features/email/data/datasource/print_file_datasource.dart';
-import 'package:tmail_ui_user/features/email/data/datasource_impl/email_datasource_impl.dart';
-import 'package:tmail_ui_user/features/email/data/datasource_impl/email_hive_cache_datasource_impl.dart';
-import 'package:tmail_ui_user/features/email/data/datasource_impl/email_local_storage_datasource_impl.dart';
-import 'package:tmail_ui_user/features/email/data/datasource_impl/email_session_storage_datasource_impl.dart';
-import 'package:tmail_ui_user/features/email/data/datasource_impl/html_datasource_impl.dart';
-import 'package:tmail_ui_user/features/email/data/datasource_impl/print_file_datasource_impl.dart';
-import 'package:tmail_ui_user/features/email/data/local/html_analyzer.dart';
-import 'package:tmail_ui_user/features/email/data/network/email_api.dart';
-import 'package:tmail_ui_user/features/email/data/repository/email_repository_impl.dart';
-import 'package:tmail_ui_user/features/email/domain/repository/email_repository.dart';
-import 'package:tmail_ui_user/features/mailbox/data/datasource/mailbox_datasource.dart';
-import 'package:tmail_ui_user/features/mailbox/data/datasource/state_datasource.dart';
-import 'package:tmail_ui_user/features/mailbox/data/datasource_impl/mailbox_cache_datasource_impl.dart';
-import 'package:tmail_ui_user/features/mailbox/data/datasource_impl/mailbox_datasource_impl.dart';
-import 'package:tmail_ui_user/features/mailbox/data/datasource_impl/state_datasource_impl.dart';
-import 'package:tmail_ui_user/features/mailbox/data/local/mailbox_cache_manager.dart';
-import 'package:tmail_ui_user/features/mailbox/data/local/state_cache_manager.dart';
-import 'package:tmail_ui_user/features/mailbox/data/network/mailbox_api.dart';
-import 'package:tmail_ui_user/features/mailbox/data/network/mailbox_isolate_worker.dart';
-import 'package:tmail_ui_user/features/mailbox/data/repository/mailbox_repository_impl.dart';
-import 'package:tmail_ui_user/features/mailbox/domain/repository/mailbox_repository.dart';
-import 'package:tmail_ui_user/features/offline_mode/manager/new_email_cache_manager.dart';
-import 'package:tmail_ui_user/features/offline_mode/manager/new_email_cache_worker_queue.dart';
-import 'package:tmail_ui_user/features/offline_mode/manager/opened_email_cache_manager.dart';
-import 'package:tmail_ui_user/features/offline_mode/manager/opened_email_cache_worker_queue.dart';
-import 'package:tmail_ui_user/features/offline_mode/manager/sending_email_cache_manager.dart';
-import 'package:tmail_ui_user/features/server_settings/data/datasource/server_settings_data_source.dart';
-import 'package:tmail_ui_user/features/server_settings/data/datasource_impl/remote_server_settings_data_source_impl.dart';
-import 'package:tmail_ui_user/features/server_settings/data/network/server_settings_api.dart';
-import 'package:tmail_ui_user/features/server_settings/data/repository/server_settings_repository_impl.dart';
-import 'package:tmail_ui_user/features/server_settings/domain/repository/server_settings_repository.dart';
-import 'package:tmail_ui_user/features/thread/data/local/email_cache_manager.dart';
-import 'package:tmail_ui_user/main/exceptions/cache_exception_thrower.dart';
-import 'package:tmail_ui_user/main/exceptions/remote_exception_thrower.dart';
-import 'package:tmail_ui_user/main/utils/ios_sharing_manager.dart';
-
-class SendEmailInteractorBindings extends InteractorsBindings {
-
-  @override
-  void bindingsDataSource() {
-    Get.lazyPut<EmailDataSource>(() => Get.find<EmailDataSourceImpl>());
-    Get.lazyPut<MailboxDataSource>(() => Get.find<MailboxDataSourceImpl>());
-    Get.lazyPut<HtmlDataSource>(() => Get.find<HtmlDataSourceImpl>());
-    Get.lazyPut<StateDataSource>(() => Get.find<StateDataSourceImpl>());
-    Get.lazyPut<PrintFileDataSource>(() => Get.find<PrintFileDataSourceImpl>());
-    Get.lazyPut<ServerSettingsDataSource>(() => Get.find<RemoteServerSettingsDataSourceImpl>());
-  }
-
-  @override
-  void bindingsDataSourceImpl() {
-    Get.lazyPut(() => EmailDataSourceImpl(
-      Get.find<EmailAPI>(),
-      Get.find<RemoteExceptionThrower>()));
-    Get.lazyPut(() => MailboxDataSourceImpl(
-      Get.find<MailboxAPI>(),
-      Get.find<MailboxIsolateWorker>(),
-      Get.find<RemoteExceptionThrower>()));
-    Get.lazyPut(() => MailboxCacheDataSourceImpl(
-      Get.find<MailboxCacheManager>(),
-      Get.find<CacheExceptionThrower>()));
-    Get.lazyPut(() => HtmlDataSourceImpl(
-      Get.find<HtmlAnalyzer>(),
-      Get.find<CacheExceptionThrower>()));
-    Get.lazyPut(() => StateDataSourceImpl(
-      Get.find<StateCacheManager>(),
-      Get.find<IOSSharingManager>(),
-      Get.find<CacheExceptionThrower>()));
-    Get.lazyPut(() => PrintFileDataSourceImpl(
-      Get.find<PrintUtils>(),
-      Get.find<ImagePaths>(),
-      Get.find<FileUtils>(),
-      Get.find<HtmlAnalyzer>(),
-      Get.find<CacheExceptionThrower>(),
-    ));
-    Get.lazyPut(() => EmailHiveCacheDataSourceImpl(
-      Get.find<NewEmailCacheManager>(),
-      Get.find<OpenedEmailCacheManager>(),
-      Get.find<NewEmailCacheWorkerQueue>(),
-      Get.find<OpenedEmailCacheWorkerQueue>(),
-      Get.find<EmailCacheManager>(),
-      Get.find<SendingEmailCacheManager>(),
-      Get.find<FileUtils>(),
-      Get.find<CacheExceptionThrower>()));
-    Get.lazyPut(() => EmailLocalStorageDataSourceImpl(
-      Get.find<LocalStorageManager>(),
-      Get.find<PreviewEmlFileUtils>(),
-      Get.find<CacheExceptionThrower>()));
-    Get.lazyPut(() => EmailSessionStorageDatasourceImpl(
-      Get.find<SessionStorageManager>(),
-      Get.find<CacheExceptionThrower>()));
-    Get.lazyPut(() => RemoteServerSettingsDataSourceImpl(
-      Get.find<ServerSettingsAPI>(),
-      Get.find<RemoteExceptionThrower>()));
-  }
-
-  @override
-  void bindingsInteractor() {
-    Get.lazyPut(() => SendEmailInteractor(Get.find<EmailRepository>()));
-  }
-
-  @override
-  void bindingsRepository() {
-    Get.lazyPut<EmailRepository>(() => Get.find<EmailRepositoryImpl>());
-    Get.lazyPut<MailboxRepository>(() => Get.find<MailboxRepositoryImpl>());
-    Get.lazyPut<ServerSettingsRepository>(() => Get.find<ServerSettingsRepositoryImpl>());
-  }
-
-  @override
-  void bindingsRepositoryImpl() {
-    Get.lazyPut(() => EmailRepositoryImpl(
-      {
-        DataSourceType.network: Get.find<EmailDataSource>(),
-        DataSourceType.hiveCache: Get.find<EmailHiveCacheDataSourceImpl>(),
-        DataSourceType.local: Get.find<EmailLocalStorageDataSourceImpl>(),
-        DataSourceType.session: Get.find<EmailSessionStorageDatasourceImpl>(),
-      },
-      Get.find<HtmlDataSource>(),
-      Get.find<StateDataSource>(),
-      Get.find<PrintFileDataSource>(),
-    ));
-    Get.lazyPut(() => MailboxRepositoryImpl(
-      {
-        DataSourceType.network: Get.find<MailboxDataSource>(),
-        DataSourceType.local: Get.find<MailboxCacheDataSourceImpl>()
-      },
-      Get.find<StateDataSource>(),
-    ));
-    Get.lazyPut(() => ServerSettingsRepositoryImpl(
-      Get.find<ServerSettingsDataSource>()));
-  }
-
-}
\ No newline at end of file
diff --git a/lib/features/offline_mode/config/work_manager_config.dart b/lib/features/offline_mode/config/work_manager_config.dart
deleted file mode 100644
index 77ec26f9d..000000000
--- a/lib/features/offline_mode/config/work_manager_config.dart
+++ /dev/null
@@ -1,19 +0,0 @@
-
-import 'package:core/core.dart';
-import 'package:tmail_ui_user/features/offline_mode/work_manager/work_dispatcher.dart';
-import 'package:workmanager/workmanager.dart';
-
-class WorkManagerConfig {
-  static WorkManagerConfig? _instance;
-
-  WorkManagerConfig._();
-
-  factory WorkManagerConfig() => _instance ??= WorkManagerConfig._();
-
-  Future<void> initialize() {
-    return Workmanager().initialize(
-      callbackDispatcher,
-      isInDebugMode: BuildUtils.isDebugMode
-    );
-  }
-}
\ No newline at end of file
diff --git a/lib/features/offline_mode/config/work_manager_constants.dart b/lib/features/offline_mode/config/work_manager_constants.dart
deleted file mode 100644
index d53ab1531..000000000
--- a/lib/features/offline_mode/config/work_manager_constants.dart
+++ /dev/null
@@ -1,5 +0,0 @@
-
-class WorkManagerConstants {
-  static const String workerTypeKey = 'worker_type';
-  static const int delayTime = 2000;
-}
\ No newline at end of file
diff --git a/lib/features/offline_mode/controller/work_manager_controller.dart b/lib/features/offline_mode/controller/work_manager_controller.dart
deleted file mode 100644
index 1b8865693..000000000
--- a/lib/features/offline_mode/controller/work_manager_controller.dart
+++ /dev/null
@@ -1,92 +0,0 @@
-import 'dart:async';
-import 'package:collection/collection.dart';
-import 'package:core/utils/app_logger.dart';
-import 'package:tmail_ui_user/features/offline_mode/config/work_manager_constants.dart';
-import 'package:tmail_ui_user/features/offline_mode/exceptions/workmanager_exception.dart';
-import 'package:tmail_ui_user/features/offline_mode/work_manager/one_time_work_request.dart';
-import 'package:tmail_ui_user/features/offline_mode/work_manager/periodic_work_request.dart';
-import 'package:tmail_ui_user/features/offline_mode/work_manager/work_request.dart';
-import 'package:tmail_ui_user/features/offline_mode/work_manager/worker_type.dart';
-import 'package:workmanager/workmanager.dart';
-
-class WorkManagerController {
-
-  static WorkManagerController? _instance;
-
-  WorkManagerController._();
-
-  factory WorkManagerController() => _instance ??= WorkManagerController._();
-
-  Future<void> enqueue(WorkRequest workRequest) async {
-    try {
-      log('WorkSchedulerController::enqueue():workRequest: $workRequest');
-      if (workRequest is OneTimeWorkRequest) {
-        await Workmanager().registerOneOffTask(
-          workRequest.uniqueId,
-          workRequest.taskId,
-          tag: workRequest.tag,
-          initialDelay: workRequest.initialDelay,
-          constraints: workRequest.constraints,
-          backoffPolicy: workRequest.backoffPolicy,
-          backoffPolicyDelay: workRequest.backoffPolicyDelay,
-          outOfQuotaPolicy: workRequest.outOfQuotaPolicy,
-          inputData: workRequest.inputData
-        );
-      } if (workRequest is PeriodicWorkRequest) {
-        await Workmanager().registerPeriodicTask(
-          workRequest.uniqueId,
-          workRequest.taskId,
-          tag: workRequest.tag,
-          frequency: workRequest.frequency,
-          initialDelay: workRequest.initialDelay,
-          constraints: workRequest.constraints,
-          backoffPolicy: workRequest.backoffPolicy,
-          backoffPolicyDelay: workRequest.backoffPolicyDelay,
-          outOfQuotaPolicy: workRequest.outOfQuotaPolicy,
-          inputData: workRequest.inputData
-        );
-      }
-    } catch (e) {
-      logError('WorkSchedulerController::enqueue(): EXCEPTION: $e');
-    }
-  }
-
-  Future<bool> handleBackgroundTask(String taskName, Map<String, dynamic>? inputData) async {
-    log('WorkSchedulerController::handleBackgroundTask():taskName: $taskName | inputData: $inputData');
-    try {
-      if (inputData != null && inputData.isNotEmpty) {
-        final workerType = inputData.remove(WorkManagerConstants.workerTypeKey);
-        final dataObject = inputData;
-        log('WorkSchedulerController::handleBackgroundTask():workerType: $workerType | dataObject: $dataObject');
-        final matchedType = WorkerType.values.firstWhereOrNull((type) => type.name == workerType);
-
-        if (matchedType != null) {
-          final worker = matchedType.getWorker();
-          await worker.bindDI();
-          final result = await worker.doWork(taskName, dataObject);
-          return result;
-        } else {
-          return Future.error(CanNotFoundWorkerType());
-        }
-      } else {
-        return Future.error(CanNotFoundInputData());
-      }
-    } catch (e) {
-      logError('WorkSchedulerController::handleBackgroundTask():EXCEPTION: $e');
-      return Future.error(e);
-    }
-  }
-
-  Future<void> cancelByWorkType(WorkerType type) => Workmanager().cancelByTag(type.name);
-
-  Future<void> cancelByUniqueId(String uniqueId) {
-    try {
-      return Workmanager().cancelByUniqueName(uniqueId);
-    } catch (e) {
-      logError('WorkSchedulerController::cancelByUniqueId():EXCEPTION: $e');
-      return Future.value();
-    }
-  }
-
-  Future<void> cancelAll() => Workmanager().cancelAll();
-}
\ No newline at end of file
diff --git a/lib/features/offline_mode/exceptions/workmanager_exception.dart b/lib/features/offline_mode/exceptions/workmanager_exception.dart
deleted file mode 100644
index a1204f091..000000000
--- a/lib/features/offline_mode/exceptions/workmanager_exception.dart
+++ /dev/null
@@ -1,3 +0,0 @@
-class CanNotFoundInputData implements Exception {}
-
-class CanNotFoundWorkerType implements Exception {}
\ No newline at end of file
diff --git a/lib/features/offline_mode/work_manager/one_time_work_request.dart b/lib/features/offline_mode/work_manager/one_time_work_request.dart
deleted file mode 100644
index f5aaf9c92..000000000
--- a/lib/features/offline_mode/work_manager/one_time_work_request.dart
+++ /dev/null
@@ -1,30 +0,0 @@
-
-import 'package:tmail_ui_user/features/offline_mode/work_manager/work_request.dart';
-import 'package:workmanager/workmanager.dart';
-
-/// A WorkRequest for non-repeating work.
-class OneTimeWorkRequest extends WorkRequest {
-  OneTimeWorkRequest({
-    required String uniqueId,
-    required String taskId,
-    String? tag,
-    Map<String, dynamic>? inputData,
-    Duration initialDelay = Duration.zero,
-    Duration backoffPolicyDelay = Duration.zero,
-    ExistingWorkPolicy? existingWorkPolicy,
-    BackoffPolicy? backoffPolicy,
-    OutOfQuotaPolicy? outOfQuotaPolicy,
-    Constraints? constraints
-  }) : super(
-    uniqueId: uniqueId,
-    taskId: taskId,
-    tag: tag,
-    inputData: inputData,
-    initialDelay: initialDelay,
-    backoffPolicyDelay: backoffPolicyDelay,
-    existingWorkPolicy: existingWorkPolicy,
-    backoffPolicy: backoffPolicy,
-    outOfQuotaPolicy: outOfQuotaPolicy,
-    constraints: constraints
-  );
-}
\ No newline at end of file
diff --git a/lib/features/offline_mode/work_manager/periodic_work_request.dart b/lib/features/offline_mode/work_manager/periodic_work_request.dart
deleted file mode 100644
index a051a600e..000000000
--- a/lib/features/offline_mode/work_manager/periodic_work_request.dart
+++ /dev/null
@@ -1,36 +0,0 @@
-
-import 'package:tmail_ui_user/features/offline_mode/work_manager/work_request.dart';
-import 'package:workmanager/workmanager.dart';
-
-/// A WorkRequest for repeating work.
-class PeriodicWorkRequest extends WorkRequest {
-  final Duration? frequency;
-
-  PeriodicWorkRequest({
-    required String uniqueId,
-    required String taskId,
-    String? tag,
-    Map<String, dynamic>? inputData,
-    Duration initialDelay = Duration.zero,
-    Duration backoffPolicyDelay = Duration.zero,
-    ExistingWorkPolicy? existingWorkPolicy,
-    BackoffPolicy? backoffPolicy,
-    OutOfQuotaPolicy? outOfQuotaPolicy,
-    Constraints? constraints,
-    this.frequency
-  }) : super(
-    uniqueId: uniqueId,
-    taskId: taskId,
-    tag: tag,
-    inputData: inputData,
-    initialDelay: initialDelay,
-    backoffPolicyDelay: backoffPolicyDelay,
-    existingWorkPolicy: existingWorkPolicy,
-    backoffPolicy: backoffPolicy,
-    outOfQuotaPolicy: outOfQuotaPolicy,
-    constraints: constraints
-  );
-
-  @override
-  List<Object?> get props => [super.props, frequency];
-}
\ No newline at end of file
diff --git a/lib/features/offline_mode/work_manager/sending_email_worker.dart b/lib/features/offline_mode/work_manager/sending_email_worker.dart
deleted file mode 100644
index 670aac94d..000000000
--- a/lib/features/offline_mode/work_manager/sending_email_worker.dart
+++ /dev/null
@@ -1,279 +0,0 @@
-import 'dart:async';
-
-import 'package:core/data/network/config/dynamic_url_interceptors.dart';
-import 'package:core/presentation/state/failure.dart';
-import 'package:core/presentation/state/success.dart';
-import 'package:core/utils/app_logger.dart';
-import 'package:jmap_dart_client/jmap/account_id.dart';
-import 'package:jmap_dart_client/jmap/core/session/session.dart';
-import 'package:jmap_dart_client/jmap/core/user_name.dart';
-import 'package:jmap_dart_client/jmap/mail/email/email.dart';
-import 'package:model/email/email_action_type.dart';
-import 'package:model/extensions/account_id_extensions.dart';
-import 'package:model/extensions/session_extension.dart';
-import 'package:tmail_ui_user/features/caching/config/hive_cache_config.dart';
-import 'package:tmail_ui_user/features/caching/utils/cache_utils.dart';
-import 'package:tmail_ui_user/features/composer/domain/state/send_email_state.dart';
-import 'package:tmail_ui_user/features/composer/domain/usecases/send_email_interactor.dart';
-import 'package:tmail_ui_user/features/email/domain/state/unsubscribe_email_state.dart';
-import 'package:tmail_ui_user/features/email/domain/usecases/unsubscribe_email_interactor.dart';
-import 'package:tmail_ui_user/features/home/domain/extensions/session_extensions.dart';
-import 'package:tmail_ui_user/features/home/domain/state/get_session_state.dart';
-import 'package:tmail_ui_user/features/home/domain/usecases/get_session_interactor.dart';
-import 'package:tmail_ui_user/features/login/data/network/interceptors/authorization_interceptors.dart';
-import 'package:tmail_ui_user/features/login/domain/state/get_authenticated_account_state.dart';
-import 'package:tmail_ui_user/features/login/domain/state/get_credential_state.dart';
-import 'package:tmail_ui_user/features/login/domain/state/get_stored_token_oidc_state.dart';
-import 'package:tmail_ui_user/features/login/domain/usecases/get_authenticated_account_interactor.dart';
-import 'package:tmail_ui_user/features/mailbox/domain/model/create_new_mailbox_request.dart';
-import 'package:tmail_ui_user/features/mailbox_dashboard/presentation/bindings/mailbox_dashboard_bindings.dart';
-import 'package:tmail_ui_user/features/offline_mode/bindings/sending_email_interactor_bindings.dart';
-import 'package:tmail_ui_user/features/offline_mode/manager/sending_email_cache_manager.dart';
-import 'package:tmail_ui_user/features/offline_mode/model/sending_state.dart';
-import 'package:tmail_ui_user/features/offline_mode/work_manager/worker.dart';
-import 'package:tmail_ui_user/features/sending_queue/domain/extensions/sending_email_extension.dart';
-import 'package:tmail_ui_user/features/sending_queue/domain/model/sending_email.dart';
-import 'package:tmail_ui_user/features/sending_queue/presentation/bindings/sending_queue_interactor_bindings.dart';
-import 'package:tmail_ui_user/features/sending_queue/presentation/utils/sending_queue_isolate_manager.dart';
-import 'package:tmail_ui_user/main/bindings/main_bindings.dart';
-import 'package:tmail_ui_user/main/routes/route_navigation.dart';
-
-class SendingEmailWorker extends Worker {
-
-  SendEmailInteractor? _sendEmailInteractor;
-  GetAuthenticatedAccountInteractor? _getAuthenticatedAccountInteractor;
-  DynamicUrlInterceptors? _dynamicUrlInterceptors;
-  AuthorizationInterceptors? _authorizationInterceptors;
-  GetSessionInteractor? _getSessionInteractor;
-  SendingQueueIsolateManager? _sendingQueueIsolateManager;
-  SendingEmailCacheManager? _sendingEmailCacheManager;
-  UnsubscribeEmailInteractor? _unsubscribeEmailInteractor;
-
-  late Completer<bool> _completer;
-  late SendingEmail _sendingEmail;
-
-  AccountId? _currentAccountId;
-  Session? _currentSession;
-
-  static SendingEmailWorker? _instance;
-
-  SendingEmailWorker._();
-
-  factory SendingEmailWorker() => _instance ??= SendingEmailWorker._();
-
-  @override
-  Future<bool> doWork(String taskId, Map<String, dynamic> inputData) {
-    _completer = Completer<bool>();
-    _sendingEmail = SendingEmail.fromJson(inputData);
-    log('SendingEmailObserver::observe():_sendingEmail: $_sendingEmail');
-    _updatingSendingStateToMainUI(
-      sendingId: _sendingEmail.sendingId,
-      sendingState: SendingState.running
-    );
-    _getAuthenticatedAccount();
-    return _completer.future;
-  }
-
-  @override
-  Future<void> bindDI() async {
-    await Future.wait([
-      MainBindings().dependencies(),
-      HiveCacheConfig.instance.setUp()
-    ]);
-
-    await Future.sync(() {
-      SendingQueueInteractorBindings().dependencies();
-      SendEmailInteractorBindings().dependencies();
-      MailboxDashBoardBindings().dependencies();
-    });
-
-    _getInteractorBindings();
-
-    await _sendingEmailCacheManager?.closeSendingEmailHiveCacheBox();
-  }
-
-  @override
-  void handleFailureViewState(Failure failure) {
-    log('SendingEmailObserver::_handleFailureViewState(): $failure');
-    if (failure is SendEmailFailure) {
-      _handleSendEmailFailure(failure);
-    } else if (failure is GetAuthenticatedAccountFailure ||
-        failure is GetSessionFailure ||
-        failure is GetStoredTokenOidcFailure ||
-        failure is GetCredentialFailure) {
-      _handleWorkerTaskToRetry();
-    } else if (failure is UnsubscribeEmailFailure) {
-      _handleWorkerTaskSuccess();
-    }
-  }
-
-  @override
-  void handleSuccessViewState(Success success) {
-    log('SendingEmailObserver::handleSuccessViewState(): $success');
-    if (success is GetSessionSuccess) {
-      _handleGetSessionSuccess(success);
-    } else if (success is GetStoredTokenOidcSuccess) {
-      _handleGetAccountByOidcSuccess(success);
-    } else if (success is GetCredentialViewState) {
-      _handleGetAccountByBasicAuthSuccess(success);
-    } else if (success is SendEmailSuccess) {
-      _handleSendEmailSuccess(success);
-    } else if (success is UnsubscribeEmailSuccess) {
-      _handleWorkerTaskSuccess();
-    }
-  }
-
-  @override
-  void handleOnError(Object? error, StackTrace stackTrace) {
-    super.handleOnError(error, stackTrace);
-    _handleWorkerTaskToRetry();
-  }
-
-  void _getInteractorBindings() {
-    _getAuthenticatedAccountInteractor = getBinding<GetAuthenticatedAccountInteractor>();
-    _dynamicUrlInterceptors = getBinding<DynamicUrlInterceptors>();
-    _authorizationInterceptors = getBinding<AuthorizationInterceptors>();
-    _getSessionInteractor = getBinding<GetSessionInteractor>();
-    _sendEmailInteractor = getBinding<SendEmailInteractor>();
-    _sendingQueueIsolateManager = getBinding<SendingQueueIsolateManager>();
-    _sendingEmailCacheManager = getBinding<SendingEmailCacheManager>();
-    _unsubscribeEmailInteractor = getBinding<UnsubscribeEmailInteractor>();
-  }
-
-  void _updatingSendingStateToMainUI({String? sendingId, SendingState? sendingState}) {
-    final eventAction = _generateEventAction(
-      sendingId ?? _sendingEmail.sendingId,
-      sendingState ?? _sendingEmail.sendingState,
-      accountId: _currentAccountId,
-      userName: _currentSession?.username
-    );
-    log('SendingEmailObserver::_updatingSendingStateToMainUI():eventAction: $eventAction');
-    _sendingQueueIsolateManager?.addEvent(eventAction);
-  }
-
-  void _getAuthenticatedAccount() {
-    consumeState(_getAuthenticatedAccountInteractor!.execute());
-  }
-
-  void _getSessionAction() {
-    consumeState(_getSessionInteractor!.execute());
-  }
-
-  void _handleGetSessionSuccess(GetSessionSuccess success) async {
-    _currentSession = success.session;
-    _currentAccountId = success.session.accountId;
-    final apiUrl = success.session.getQualifiedApiUrl(baseUrl: _dynamicUrlInterceptors?.jmapUrl);
-    if (apiUrl.isNotEmpty && _currentSession != null && _currentAccountId != null) {
-      _dynamicUrlInterceptors?.changeBaseUrl(apiUrl);
-      _sendEmailAction(_currentAccountId!, _currentSession!);
-    } else {
-      _handleWorkerTaskToRetry();
-    }
-  }
-
-  void _handleGetAccountByBasicAuthSuccess(GetCredentialViewState credentialViewState) {
-    _dynamicUrlInterceptors?.setJmapUrl(credentialViewState.baseUrl.toString());
-    _authorizationInterceptors?.setBasicAuthorization(
-      credentialViewState.userName,
-      credentialViewState.password,
-    );
-    _dynamicUrlInterceptors?.changeBaseUrl(credentialViewState.baseUrl.toString());
-    _getSessionAction();
-  }
-
-  void _sendEmailAction(AccountId accountId, Session session) {
-    consumeState(
-      _sendEmailInteractor!.execute(
-        session,
-        accountId,
-        _sendingEmail.toEmailRequest(),
-        mailboxRequest: _getMailboxRequest()
-      )
-    );
-  }
-
-  CreateNewMailboxRequest? _getMailboxRequest() {
-    if (_sendingEmail.mailboxNameRequest != null) {
-      return CreateNewMailboxRequest(
-        _sendingEmail.mailboxNameRequest!);
-    } else {
-      return null;
-    }
-  }
-
-  void _handleGetAccountByOidcSuccess(GetStoredTokenOidcSuccess storedTokenOidcSuccess) {
-    _dynamicUrlInterceptors?.setJmapUrl(storedTokenOidcSuccess.baseUrl.toString());
-    _authorizationInterceptors?.setTokenAndAuthorityOidc(
-      newToken: storedTokenOidcSuccess.tokenOidc,
-      newConfig: storedTokenOidcSuccess.oidcConfiguration
-    );
-    _dynamicUrlInterceptors?.changeBaseUrl(storedTokenOidcSuccess.baseUrl.toString());
-    _getSessionAction();
-  }
-
-  void _handleSendEmailSuccess(SendEmailSuccess success) {
-    if (success.emailRequest.emailActionType == EmailActionType.composeFromUnsubscribeMailtoLink &&
-        success.emailRequest.previousEmailId != null) {
-      _unsubscribeMail(success.emailRequest.previousEmailId!);
-    } else {
-      _handleWorkerTaskSuccess();
-    }
-  }
-
-  void _handleSendEmailFailure(SendEmailFailure failure) {
-    _handleWorkerTaskFailure(failure.exception);
-  }
-
-  void _handleWorkerTaskToRetry() async {
-    _updatingSendingStateToMainUI(sendingState: SendingState.canceled);
-    log('SendingEmailObserver::_handleWorkerTaskToRetry():');
-    await Future.delayed(
-      const Duration(milliseconds: 1000),
-      () => _completer.complete(false)
-    );
-  }
-
-  void _handleWorkerTaskFailure(dynamic error) async {
-    log('SendingEmailObserver::_handleWorkerTaskFailure():error: $error');
-    _updatingSendingStateToMainUI(sendingState: SendingState.error);
-    await Future.delayed(
-      const Duration(milliseconds: 1000),
-      () => _completer.completeError(error)
-    );
-  }
-
-  void _handleWorkerTaskSuccess() async {
-    log('SendingEmailObserver::_handleWorkerTaskSuccess():');
-    _updatingSendingStateToMainUI(sendingState: SendingState.success);
-    await Future.delayed(
-      const Duration(milliseconds: 1000),
-      () => _completer.complete(true)
-    );
-  }
-
-  String _generateEventAction(
-    String sendingId,
-    SendingState sendingState,
-    {
-      AccountId? accountId,
-      UserName? userName
-    }
-  ) => TupleKey(sendingId, sendingState.name, accountId?.asString, userName?.value).toString();
-
-  void _unsubscribeMail(EmailId emailId) {
-    if (_unsubscribeEmailInteractor != null &&
-        _currentSession != null &&
-        _currentAccountId != null
-    ) {
-      consumeState(
-        _unsubscribeEmailInteractor!.execute(
-          _currentSession!,
-          _currentAccountId!,
-          emailId
-        )
-      );
-    } else {
-      _handleWorkerTaskSuccess();
-    }
-  }
-}
\ No newline at end of file
diff --git a/lib/features/offline_mode/work_manager/work_dispatcher.dart b/lib/features/offline_mode/work_manager/work_dispatcher.dart
deleted file mode 100644
index 82a33b532..000000000
--- a/lib/features/offline_mode/work_manager/work_dispatcher.dart
+++ /dev/null
@@ -1,8 +0,0 @@
-
-import 'package:tmail_ui_user/features/offline_mode/controller/work_manager_controller.dart';
-import 'package:workmanager/workmanager.dart';
-
-@pragma('vm:entry-point')
-void callbackDispatcher() {
-  Workmanager().executeTask(WorkManagerController().handleBackgroundTask);
-}
diff --git a/lib/features/offline_mode/work_manager/work_request.dart b/lib/features/offline_mode/work_manager/work_request.dart
deleted file mode 100644
index e6be56113..000000000
--- a/lib/features/offline_mode/work_manager/work_request.dart
+++ /dev/null
@@ -1,44 +0,0 @@
-
-import 'package:equatable/equatable.dart';
-import 'package:workmanager/workmanager.dart';
-
-/// Represents the scheduling of requests
-abstract class WorkRequest with EquatableMixin {
-  final String uniqueId;
-  final String taskId;
-  final String? tag;
-  final Map<String, dynamic>? inputData;
-  final Duration initialDelay;
-  final Duration backoffPolicyDelay;
-  final ExistingWorkPolicy? existingWorkPolicy;
-  final BackoffPolicy? backoffPolicy;
-  final OutOfQuotaPolicy? outOfQuotaPolicy;
-  final Constraints? constraints;
-
-  WorkRequest( {
-    required this.uniqueId,
-    required this.taskId,
-    this.tag,
-    this.inputData,
-    this.initialDelay = Duration.zero,
-    this.backoffPolicyDelay = Duration.zero,
-    this.existingWorkPolicy,
-    this.backoffPolicy,
-    this.outOfQuotaPolicy,
-    this.constraints
-  });
-
-  @override
-  List<Object?> get props => [
-    uniqueId,
-    taskId,
-    tag,
-    inputData,
-    initialDelay,
-    backoffPolicyDelay,
-    existingWorkPolicy,
-    backoffPolicy,
-    outOfQuotaPolicy,
-    constraints
-  ];
-}
\ No newline at end of file
diff --git a/lib/features/offline_mode/work_manager/worker.dart b/lib/features/offline_mode/work_manager/worker.dart
deleted file mode 100644
index e74755b5d..000000000
--- a/lib/features/offline_mode/work_manager/worker.dart
+++ /dev/null
@@ -1,30 +0,0 @@
-import 'dart:async';
-import 'package:core/presentation/state/failure.dart';
-import 'package:core/presentation/state/success.dart';
-import 'package:core/utils/app_logger.dart';
-import 'package:dartz/dartz.dart';
-
-abstract class Worker {
-  Future<void> bindDI();
-
-  Future<bool> doWork(String taskId, Map<String, dynamic> inputData);
-
-  void consumeState(Stream<Either<Failure, Success>> newStateStream) {
-    newStateStream.listen(
-      _handleStateStream,
-      onError: handleOnError
-    );
-  }
-
-  void _handleStateStream(Either<Failure, Success> newState) {
-    newState.fold(handleFailureViewState, handleSuccessViewState);
-  }
-
-  void handleFailureViewState(Failure failure) {}
-
-  void handleSuccessViewState(Success success) {}
-
-  void handleOnError(Object? error, StackTrace stackTrace) {
-    logError('WorkObserver::handleOnError():error: $error | stackTrace: $stackTrace');
-  }
-}
\ No newline at end of file
diff --git a/lib/features/offline_mode/work_manager/worker_type.dart b/lib/features/offline_mode/work_manager/worker_type.dart
deleted file mode 100644
index c7c493f72..000000000
--- a/lib/features/offline_mode/work_manager/worker_type.dart
+++ /dev/null
@@ -1,14 +0,0 @@
-
-import 'package:tmail_ui_user/features/offline_mode/work_manager/sending_email_worker.dart';
-import 'package:tmail_ui_user/features/offline_mode/work_manager/worker.dart';
-
-enum WorkerType {
-  sendingEmail;
-
-  Worker getWorker() {
-    switch(this) {
-      case WorkerType.sendingEmail:
-        return SendingEmailWorker();
-    }
-  }
-}
\ No newline at end of file