code: def send(self, *args, **kwargs):
          
          clean = kwargs.pop('clean', False)
          if not self._is_rendered:
              self.render()
          if clean:
              self.clean()
          return super(EmailMessage, self).send(*args, **kwargs)
docs: Send email message, render if it is not rendered yet.
  
          Note
          ----
          Any extra arguments are passed to
          :class:`EmailMultiAlternatives.send() <django.core.mail.EmailMessage>`.
  
          Keyword Arguments
          -----------------
          clean : bool
              If ``True``, remove any template specific properties from the
              message object. Default is ``False``.