docs: def send_mass_mail(data_tuple, fail_silently=False, auth_user=None,
                     auth_password=None, connection=None):
      """
      Given a data_tuple of (subject, message, from_email, recipient_list), send
      each message to each recipient list. Return the number of emails sent.
      If from_email is None, use the DEFAULT_FROM_EMAIL setting.
  
      """
      connection = connection or get_connection(
          username=auth_user,
          password=auth_password,
          fail_silently=fail_silently,
      )
      messages = [
          EmailMessage(subject, message, sender, recipient)
          for subject, message, sender, recipient in data_tuple
      ]
      return connection.send_messages(messages)