diff --git a/vendor/built_in_modules/ask/app/views/ask_mailer/notice.html.erb b/vendor/built_in_modules/ask/app/views/ask_mailer/notice.html.erb
index 9ddcda5d..7841989b 100644
--- a/vendor/built_in_modules/ask/app/views/ask_mailer/notice.html.erb
+++ b/vendor/built_in_modules/ask/app/views/ask_mailer/notice.html.erb
@@ -31,5 +31,6 @@
       <td><%= @ask_question.content %></td>
     </tr>
   </table>
+  <p>此為系統自動發信，請勿直接回覆</p>
 </body>
 </html>
diff --git a/vendor/built_in_modules/ask/app/views/ask_mailer/reply.html.erb b/vendor/built_in_modules/ask/app/views/ask_mailer/reply.html.erb
index 473ad151..06930f16 100644
--- a/vendor/built_in_modules/ask/app/views/ask_mailer/reply.html.erb
+++ b/vendor/built_in_modules/ask/app/views/ask_mailer/reply.html.erb
@@ -7,5 +7,6 @@
     <p>
       <%= @ask_question.ask_reply.content %>
     </p>
+    <p>此為系統自動發信，請勿直接回覆</p>
   </body>
 </html>