code: def send(self, sender, to, subject, plain=None, html=None, cc=None, bcc=None,
               attach=None, replyto=None):
          
          headers = {}
          if attach:
              raise NotImplementedError('Attachments not implemented for Django yet!')
          if replyto:
              headers['Reply-To'] = replyto
  
          self.sanity_check(sender, to, subject, plain=plain, html=html,
                            cc=cc, bcc=bcc)
  
          if not cc:
              cc = []
          if not bcc:
              bcc = []
  
          # This comes straight from the docs at
          # https://docs.djangoproject.com/en/dev/topics/email/
          from django.core.mail import EmailMultiAlternatives
  
          if not plain:
              plain = ''
  
          msg = EmailMultiAlternatives(u(subject), u(plain), u(sender), _stringlist(to),
                                       bcc=bcc, cc=cc, headers=headers)
  
          if html:
              msg.attach_alternative(ensure_unicode(html), "text/html")
  
          msg.send()
          return
docs: Send the message.
  
          If we have PLAIN and HTML versions, send a multipart alternative
          MIME message, else send whichever we do have.
  
          If we have neither, raise NoContentError
  
          Arguments:
          - `sender`: str
          - `to`: list
          - `subject`: str
          - `plain`: str
          - `html`: str
          - `attach`: str or iterable of str
          - `replyto`: str
  
          Return: None
          Exceptions: NoContentError