code: def send_user_to_user_message(self, from_user_id, target_user_ids, message='', contains_markup=True,
                                    scope='message/user'):
          
          return _post(
              token=self.oauth.get_user_token(scope),
              uri='/message/send',
              data={
                  'From': from_user_id,
                  'To': ",".join(target_user_ids),
                  'Body': message,
                  'ContainsMarkup': contains_markup
              }
          )
docs: Send a message (from a Mxit user) to a list of Mxit users