public function actionDeleteDisposableEmail()
 {
     if (Yii::app()->request->isAjaxRequest) {
         $model = new CreateUser('deleteDisposable');
         $model->attributes = $_POST;
         if ($model->validate()) {
             //validating json data according to action
             $model->deleteDisposable(Yii::app()->user->getId());
         } else {
             echo json_encode($model->getErrors());
         }
     }
 }