code: def email(self, subject, text_body, html_body=None, sender=None, **kwargs):
          # type: (str, str, Optional[str], Optional[str], Any) -> None
          
          self.configuration.emailer().send([self.data['email']], subject, text_body, html_body=html_body, sender=sender,
                                            **kwargs)
docs: Emails a user.
  
          Args:
              subject (str): Email subject
              text_body (str): Plain text email body
              html_body (str): HTML email body
              sender (Optional[str]): Email sender. Defaults to SMTP username.
              **kwargs: See below
              mail_options (List): Mail options (see smtplib documentation)
              rcpt_options (List): Recipient options (see smtplib documentation)
  
          Returns:
              None