docs: def mail_handler(self,
                       punchline=None, add_meta=False, add_settings=True,
                       *args, **kwargs):
          '''
          :param punchline:
              Adds a punchline before further text
          :param add_meta:
              Appends current meta to the mail
          :param add_settings:
              Appends current settings to the mail
          :returns:
              A new mail handler
  
          .. seealso:: :ref:`tools_mail`
          '''
  
          m = Mail(self.m, *args, **kwargs)
          if punchline:
              m.text = '-> %s <-' % (punchline)
          if add_meta:
              m.text = self.meta.log
          if add_settings:
              m.text = self.settings.get
          return m