code: public function actionRecoverPassword()
  	{
  		$model = new AccountRecoverPasswordForm();
  
  		if ($model->load(Yii::$app->request->post())) {
  			if ($model->validate()) {
  				$model->recoverPassword();
  			}
  		}
  
  		return $this->render('recoverPassword', ['model' => $model]);
  	}
docs: Sends password recovery mail to the user
  
  @return string