public function send($to)
    {
        $message = Swift_Message::newInstance($this->subject)
                ->setFrom(array(MAIL_USERNAME => 'View Tuber'))
                ->setTo($to)
                ->setBody($this->body);
        if ($this->mailer->send($message))
        {
            echo 'Sent';
        }
        else
        {
            echo 'Failed';
        }
    }