Helper/EmailHelper.php
public function createMessageFromTemplateFile($template, $params, $subject, $recipient, $sender = null)
    {
        $body = $this->templating->render($template, $params);

        if (!$sender) {
            $sender = $this->defaultSender;
        }

        $message = new \Swift_Message();
        $message->setFrom($sender)
            ->setReplyTo($sender)
            ->setTo($recipient)
            ->setSubject($subject)
            ->setBody($body, 'text/html');
        return $message;
    }
public function createMessageFromTemplateFile($template, $params, $subject, $recipient, $sender = null)
    {
        $body = $this->templating->render($template, $params);

        if (!$sender) {
            $sender = $this->defaultSender;
        }

        $message = new \Swift_Message();
        $message->setFrom($sender)
            ->setReplyTo($sender)
            ->setTo($recipient)
            ->setSubject($subject)
            ->setBody($body, 'text/html');
        return $message;
    }
Create Message from a file-based template

@param string      $template
@param string      $params
@param string      $subject
@param string      $recipient
@param string|null $sender

@return \Swift_Message