docs: def text(self, text):
          '''
          .. seealso:: :attr:`text`
          '''
  
          if text:
              if not isinstance(text, str):
                  text = _pformat(text)
              text += '\n\n'
              self.m(
                  'add text to mail',
                  more=dict(len=len(text))
              )
              self.__message.attach(_MIMEText(text, 'plain', 'UTF-8'))