public function actionBatchDelete()
 {
     $data = ['status' => 0, 'message' => ''];
     Yii::$app->response->format = Response::FORMAT_JSON;
     if (Yii::$app->request->isAjax) {
         $ids = Yii::$app->request->post('ids');
         Email::deleteAll(['in', 'id', $ids]);
         // Set flash message
         $data = ['status' => 1, 'message' => ''];
     }
     return $data;
 }