Swift Mailer with STARTTLS

I used to use Swift Mailer all the time as it is so easy to setup and configure but about a year ago switched to phpmailer as I had a new mail server setup with starttls that I wanted to use and whatever I did I couldn’t get it going.

Just recently been trying to improve the efficiency sending large amounts of emails which led me to revisit Swift… and remember why I stopped using it! Swift Mailer v4.0.6 does not support STARTTLS… however, we can make it do it with a few tweaks:

After a few hours of searching and experimenting I came across a patch written to add starttls support. I’d never done a ‘patch’ in Linux before but it was easy enough once pointed in the right direction.

For those unable to patch/not on Linux/can’t be bothered, I’ve packaged up a zip of Swift Mailer v4.0.6 with starttls added for download.

You use starttls in the normal way, check the example below…

$transport = Swift_SmtpTransport::newInstance('mail.example.com', 25,
    'starttls')
    ->setUsername('username')
    ->setPassword('password');

$mailer = Swift_Mailer::newInstance($transport);
$message = Swift_Message::newInstance('title', 'message', 'text/html')
    ->setFrom(array('from@example.com' => 'name'))
    ->setTo(array('to@example.com' => 'name'));

$mailer->send($message);