code: def send(self, smtp=None, **kw):
          
          smtp_options = {}
          smtp_options.update(self.config.smtp_options)
          if smtp:
              smtp_options.update(smtp)
          return super(Message, self).send(smtp=smtp_options, **kw)
docs: Sends message.
  
          :param smtp: When set, parameters from this dictionary overwrite
                       options from config. See `emails.Message.send` for more information.
  
          :param kwargs: Parameters for `emails.Message.send`
  
          :return: Response objects from emails backend.
                   For default `emails.backend.smtp.STMPBackend` returns an `emails.backend.smtp.SMTPResponse` object.