public function postDeleteMail(Request $request)
 {
     $validate = Validator::make($request->all(), ['memberId' => 'required', 'address' => 'required']);
     if ($validate->fails()) {
         $e = new InvalidArgumentHttpException();
         $e->setMessage('잘못된 요청입니다.');
         throw $e;
     }
     $address = $request->get('address');
     $memberId = $request->get('memberId');
     $mail = $this->handler->findMailByAddress($address);
     if ($mail === null) {
         throw new EmailNotFoundException();
     }
     $result = $this->handler->deleteMail($mail);
     return Presenter::makeApi(['type' => 'success', 'address' => $address]);
 }