public function receive($message)
 {
     $callback = function () use($message) {
         $data = json_decode($message->body, true);
         $this->sender->send($data);
         $message->delivery_info('channel')->basic_ack($message->delivery_info('delivery_tag'));
     };
     $this->connection->basic_qos(null, 1, null);
     $this->connection->basic_consume('email_queue', '', false, false, false, false, $callback);
     while (count($this->connection->callbacks)) {
         $this->connection->wait();
     }
     return $message;
 }