Sendmail function with SwiftMailer

gistfile1.php

function sendMail($subject, $body, $receiver) {
  $sender = array('no-reply@inzetkast.nl' => 'Inzetkast.nl');

  $transport = Swift_SmtpTransport::newInstance('smtp.gmail.com', 465, 'ssl')
    ->setUsername('post@inzetkast.nl')
    ->setPassword('xxxx')
    ;

  $mailer = Swift_Mailer::newInstance($transport);
  $message = Swift_Message::newInstance($subject)
    ->setFrom($sender)
    ->setTo($receiver)
    ->setContentType('text/html')
    ;
  $message->setBody($body);
  
  error_log('YOURLOGMSG HERE');

  $result = $mailer->send($message);
  return true;
}