Symfony içinde Swiftmailer ve Mailtrap ile email göndermek

parameters:

#    mailer_transport: smtp
#    mailer_host: 127.0.0.1
#    mailer_user: null
#    mailer_password: null
#    mailer_noreply:
#        - noreply@mydomain.com

    mailer_transport: smtp
    mailer_host: mailtrap.io
    mailer_user: 301048d74474739u1
    mailer_password: ed9a12310a297t
    mailer_auth_mode: cram-md5
    mailer_port: 2525
    mailer_noreply:
        - noreply@mydomain.com

swiftmailer:
    transport: "%mailer_transport%"
    host:      "%mailer_host%"
    username:  "%mailer_user%"
    password:  "%mailer_password%"
    auth_mode: "%mailer_auth_mode%"
    port:      "%mailer_port%"
    spool:     { type: memory }

swiftmailer:
    disable_delivery: true
    spool:
        type: file
        path: %kernel.cache_dir%/email/spool

services:
    application_frontend.util.mailer:
        class: Application\FrontendBundle\Util\Mailer
        arguments:
            - @mailer
            - @templating
            - @logger
            - %mailer_noreply%

services:
    application_frontend.service.default:
        class: Application\FrontendBundle\Service\AccountService
        arguments:
            - @application_frontend.util.mailer

namespace Application\FrontendBundle\Util;

use Psr\Log\LoggerInterface;
use Swift_Mailer;
use Swift_Message;
use Swift_RfcComplianceException;
use Symfony\Bundle\FrameworkBundle\Templating\EngineInterface;

class Mailer implements MailerInterface
{
    private $mailer;
    private $templating;
    private $logger;
    private $noreply;

    public function __construct(
        Swift_Mailer $mailer,
        EngineInterface $templating,
        LoggerInterface $logger,
        array $noreply
    ) {
        $this->mailer = $mailer;
        $this->templating = $templating;
        $this->logger = $logger;
        $this->noreply = $noreply;
    }

    public function sendRegistration(array $to)
    {
        $body = $this->templating->render(
            'ApplicationFrontendBundle:Mailer:registration.txt.twig', ['signature' => 'inanzzz']
        );

        $this->send($to, 'Registration confirmation!', $body, 'registration');
    }

    private function send($to, $subject, $body, $messageId)
    {
        $failedRecipients = [];

        $message = Swift_Message::newInstance()
            ->setSubject($subject)
            ->setFrom($this->noreply)
            ->setTo($to)
            ->setBody($body, 'text/html');
        $message->getHeaders()->addTextHeader('X-Message-ID', $messageId);

        try {
            $this->mailer->send($message, $failedRecipients);
        } catch (Swift_RfcComplianceException $e) {
            $this->logger->critical(
                sprintf(
                    'Failed to send email to recipients [%s] with message: %s',
                    implode(', ', $failedRecipients),
                    $e->getMessage()
                )
            );
        }
    }
}

namespace Application\FrontendBundle\Service\AccountService;

use Application\FrontendBundle\Util\MailerInterface;

class AccountService implements AccountServiceInterface
{
    private $mailer;

    public function __construct(MailerInterface $mailer)
    {
        $this->mailer = $mailer;
    }

    public function sendEmail()
    {
        $this->mailer->sendRegistration(['customer@customer.com']);
    }
}

<h3>Registration</h3>
<br />
<p>Hello,</p>
<br />
<p>Thank you for registering with us.</p>
<br />
<p>{{ signature }}</p>