private function getMessage(string $subject, string $message): \Swift_Message
    {
        $messageObject = new \Swift_Message($subject, $message);
        $messageObject
            ->setFrom([$this->config('mailer.sender_email') => $this->config('mailer.sender_name')])
            ->setTo($this->config('mailer.recipients'))
        ;

        return $messageObject;
    }