TF-3579 E2E Mailbox mark as read

integration_test/tests/mailbox/mark_mailbox_as_read_test.dart

@@ -0,0 +1,9 @@
+import '../../base/test_base.dart';
+import '../../scenarios/mailbox/mark_mailbox_as_read_scenario.dart';
+
+void main() {
+  TestBase().runPatrolTest(
+    description: 'Should not see unread counter when mark mailbox as read',
+    scenarioBuilder: ($) => MarkMailboxAsReadScenario($),
+  );
+}