code: def save_model(self, request, obj, form, change):
          
          must_send_verification_mail_after_save = False
          if change and settings.ACCOUNTS_APPROVAL_REQUIRED:
              if obj.is_active and not User.objects.get(id=obj.id).is_active:
                  if settings.ACCOUNTS_VERIFICATION_REQUIRED:
                      # Accounts verification requires an inactive account
                      obj.is_active = False
                      # The token generated by send_verification_mail()
                      # must match the _saved_ User object,
                      # so postpone send_verification_mail() until later
                      must_send_verification_mail_after_save = True
                  else:
                      send_approved_mail(request, obj)
          super(UserProfileAdmin, self).save_model(request, obj, form, change)
          if must_send_verification_mail_after_save:
              user = User.objects.get(id=obj.id)
              send_verification_mail(request, user, "signup_verify")
docs: If the ``ACCOUNTS_APPROVAL_REQUIRED`` setting is ``True``,
          send a notification email to the user being saved if their
          ``active`` status has changed to ``True``.
          If the ``ACCOUNTS_VERIFICATION_REQUIRED`` setting is ``True``,
          send a verification email instead.