Here my code:
$transport = Swift_SmtpTransport::newInstance('smtp.gmail.com', 465,"ssl" )

     ->setUsername('[email blocked]')
      ->setPassword('test');
    $mailer = Swift_Mailer::newInstance($transport);
    $message = Swift_Message::newInstance('Test Using SMTP')
      ->setFrom('[email blocked]')
      ->setBody('Here is the message itself')
      ->setTo(array(
                    '[email blocked]' => 'Receiver Name',
                    '[email blocked]' => 'A name',
                    '[email blocked]' => 'Nisha'
                  ));

    //Send the message
    $failures = array();
    if (!$mailer->send($message, $failures))
    {
      echo "Failures:";
      print_r($failures);
    }
    else
        echo 'success';