public function sendNotificationEmail($mail, $from=null)
    {
        $templateName = 'CoreBundle:Email:notification.email.html.twig';

        $context = array(
            'mail' => $mail
        );
        
        if(is_null($from)){
            $this->sendMessage(
                $templateName, 
                $context,  
                $mail->getSender(),
                $mail->getRecipient(),
                $mail->getAttachment()
                );
        }else{
            $this->sendMessage(
                $templateName, 
                $context,  
                $from,
                $mail->getRecipient(),
                $mail->getAttachment()
                );
        }
        
    }