PHP Hip\MandrillBundle Message::addMetadata示例

 public function sendEmail($params)
 {
     $message = new Message();
     $message->setReplyTo($params['sender_email'])->setFromName($params['sender_name'])->setSubject($params['subject'])->setHtml($params['html'])->setSubaccount($params['subaccount']);
     foreach ($params['tags'] as $tag) {
         $message->addTag($tag);
     }
     foreach ($params['metadata'] as $metadata) {
         $message->addMetadata($metadata);
     }
     foreach ($params['contacts'] as $contactEmail) {
         $message->addTo($contactEmail);
     }
     $result = $this->mandrillSender->send($message);
     return $result;
 }