email.html.twig

{% block subject %}Onderwerp{% endblock %}

{% block body_text %}
{% autoescape false %}
Email content

{% include 'xxxBundle:Email:footer.email.html.twig' %}

{% endautoescape %}
{% endblock %}

{% block body_html %}
{% include 'xxxBundle:Email:registration.email.html.twig' %}
{% endblock %}

mail.php

    protected function sendMessage($templateName, $context, $fromEmail, $toEmail)
    {
        $context = $this->twig->mergeGlobals($context);
        $template = $this->twig->loadTemplate($templateName);
        $subject = $template->renderBlock('subject', $context);
        $textBody = $template->renderBlock('body_text', $context);
        $htmlBody = $template->renderBlock('body_html', $context);

        $message = \Swift_Message::newInstance()
            ->setSubject($subject)
            ->setFrom($fromEmail)
            ->setTo($toEmail);

        if (!empty($htmlBody)) {
            $message->setBody($htmlBody, 'text/html')
                ->addPart($textBody, 'text/plain');
        } else {
            $message->setBody($textBody);
        }

        $this->mailer->send($message);
    }