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Be since the Symfony/Mailer is not completed yet some behavior may be affected in later release, consider this bundle as experimental too

This bundle allow to delegate creation of email to a specific class.

It also allow configuration for a default from.


  default_from: 'support@example.com'

Instead of building your email in your controller directly you create a class that extend from the Symfony\Component\Mime\Email and create a "writer" for it.

Any service that implement the Draw\Bundle\PostOfficeBundle\Email\EmailWriterInterface will be register as a writer. The getForEmails must return a map of method with priority as the value to register method as a writer (if you return the method as the value it will consider it's priority to be 0). The system will detect if the email match the class of the first argument of the method and call it if needed.

The Post Office declare a listener for Symfony\Component\Mailer\Event\MessageEvent to hook it to the symfony mailer.

By convention it's recommend to create a Email folder in which you will create all your email class and also your writer class that does implement the Draw\Bundle\PostOfficeBundle\Email\EmailWriterInterface.


Let's create a forgot password email, this class will contain the minimum information to compose the email, in that case the email of the user that trigger the forgot password email flow.

<?php namespace App\Email;

use Symfony\Bridge\Twig\Mime\TemplatedEmail;

class ForgotPasswordEmail extends TemplatedEmail
    private $emailAddress;

    public function __construct(string $emailAddress)
        $this->emailAddress = $emailAddress;

     * The email address of the person who forgot is email
    public function getEmailAddress(): string
        return $this->emailAddress;

We must create a writer for the email:

<?php namespace App\Email;

use App\Email\ForgotPasswordEmail;
use App\LostPasswordTokenProvider;
use Draw\Bundle\PostOfficeBundle\Email\EmailWriterInterface;

class ForgotPasswordEmailWriter implements EmailWriterInterface
    private $lostPasswordTokenProvider;
    public function __construct(LostPasswordTokenProvider $lostPasswordTokenProvider)
        $this->lostPasswordTokenProvider = $lostPasswordTokenProvider;
     public static function getForEmails(): array
         return ['compose']; // Or ['compose' => 0];
    public function compose(ForgotPasswordEmail $forgotPasswordEmail)
        $emailAddress = $forgotPasswordEmail->getEmailAddress();
            ->subject('You have forgotten your password !')
                'token' => $this->lostPasswordTokenProvider->generateToken($emailAddress)

The basic controller example:

<?php namespace App\Controller;

use App\Email\ForgotPasswordEmail;
use Symfony\Component\Mailer\MailerInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpFoundation\RedirectResponse;

class ForgotPasswordController
    public function forgotPasswordAction(
        Request $request,
        MailerInterface $mailer
    ): Response {
        if ($request->getMethod() == Request::METHOD_GET) {
            return $this->render('users/forgot_password.html.twig');

        // ... You should have a logic to validate there is a user and send a different email ... /
        $mailer->send(new ForgotPasswordEmail($request->request->get('email')));

        return new RedirectResponse($this->generateUrl('check_email'));

That way you keep you controller clean and structure how email should be written and overridden.

The system also pass the Envelope parameter as the second argument in case you need it.

If you look at the Draw\Bundle\PostOfficeBundle\Email\DefaultFromEmailWriter you will see how to create a writer that is call for all the email that are sent.