protected function sendRawMessage(Swift_Mime_Message $message)
{
$http = new Client();
$this->addQuery('html', $message->getBody() ?: '');
$this->addQuery('to', $this->getAddress($message->getTo()));
$response = $http->post(self::SEND_HTML_URL, ['multipart' => $this->query]);
return $this->response($response);
}