Configuration

Before using Swift Mailer, be sure to include its configuration. The only mandatory configuration parameter is transport:

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# app/config/config.yml
swiftmailer:
    transport:  smtp
    encryption: ssl
    auth_mode:  login
    host:       smtp.gmail.com
    username:   your_username
    password:   your_password

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<!-- app/config/config.xml -->

<!--
    xmlns:swiftmailer="http://symfony.com/schema/dic/swiftmailer"
    http://symfony.com/schema/dic/swiftmailer http://symfony.com/schema/dic/swiftmailer/swiftmailer-1.0.xsd
-->

<swiftmailer:config
    transport="smtp"
    encryption="ssl"
    auth-mode="login"
    host="smtp.gmail.com"
    username="your_username"
    password="your_password" />

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// app/config/config.php
$container->loadFromExtension('swiftmailer', array(
    'transport'  => "smtp",
    'encryption' => "ssl",
    'auth_mode'  => "login",
    'host'       => "smtp.gmail.com",
    'username'   => "your_username",
    'password'   => "your_password",
));

The majority of the Swift Mailer configuration deals with how the messages themselves should be delivered.

The following configuration attributes are available:

• transport (smtp, mail, sendmail, or gmail)
• username
• password
• host
• port
• encryption (tls, or ssl)
• auth_mode (plain, login, or cram-md5)

• spool

  • type (how to queue the messages, file or memory is supported, see How to Spool Emails)
  • path (where to store the messages)
• delivery_address (an email address where to send ALL emails)
• disable_delivery (set to true to disable delivery completely)

Sending Emails

The Swift Mailer library works by creating, configuring and then sending Swift_Message objects. The "mailer" is responsible for the actual delivery of the message and is accessible via the mailer service. Overall, sending an email is pretty straightforward:

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public function indexAction($name)
{
    $message = \Swift_Message::newInstance()
        ->setSubject('Hello Email')
        ->setFrom('send@example.com')
        ->setTo('recipient@example.com')
        ->setBody(
            $this->renderView(
                'HelloBundle:Hello:email.txt.twig',
                array('name' => $name)
            )
        )
    ;
    $this->get('mailer')->send($message);

    return $this->render(...);
}

To keep things decoupled, the email body has been stored in a template and rendered with the renderView() method.

The $message object supports many more options, such as including attachments, adding HTML content, and much more. Fortunately, Swift Mailer covers the topic of Creating Messages in great detail in its documentation.