code: def do_email_notification(self, comment, entry, site):
          
          if not self.mail_comment_notification_recipients:
              return
  
          template = loader.get_template(
              'comments/zinnia/entry/email/notification.txt')
          context = {
              'comment': comment,
              'entry': entry,
              'site': site,
              'protocol': PROTOCOL
          }
          subject = _('[%(site)s] New comment posted on "%(title)s"') % \
              {'site': site.name, 'title': entry.title}
          message = template.render(context)
  
          send_mail(
              subject, message,
              settings.DEFAULT_FROM_EMAIL,
              self.mail_comment_notification_recipients,
              fail_silently=not settings.DEBUG
          )
docs: Send email notification of a new comment to site staff.