code: def _send(self, email_message):
          
          if not email_message.recipients():
              return False
  
          if set(email_message.recipients()).issubset(admin_emails()):
              # Skip on admin notifications
              return super(DevEmailBackend, self)._send(email_message)
  
          from_email = sanitize_address(email_message.from_email, email_message.encoding)
          try:
              recipients = [sanitize_address(addr, email_message.encoding)
                            for addr in settings.DEV_EMAIL_LIST]
          except:
              raise ImproperlyConfigured("You must set a DEV_EMAIL_LIST setting to use the Dev Email Backend.")
  
          message = email_message.message()
          charset = message.get_charset().get_output_charset() if message.get_charset() else "utf-8"
          try:
              self.connection.sendmail(from_email, recipients,
                                       force_bytes(message.as_string(), charset))
          except:
              if not self.fail_silently:
                  raise
              return False
          return True
docs: A helper method that does the actual sending.