def auto_reply_message(self):
        """ The account's Internal auto reply message. Setting the value will change the auto reply message of the
         account, automatically setting the status to enabled (but not altering the schedule). """
        if self._auto_reply is None:
            r = requests.get('https://outlook.office.com/api/v2.0/me/MailboxSettings/AutomaticRepliesSetting',
                             headers=self._headers)
            check_response(r)
            self._auto_reply = r.json().get('InternalReplyMessage')

        return self._auto_reply