diff --git a/pages/mailbox/read-mail.html b/pages/mailbox/read-mail.html
index 9765042c7..74e3ca728 100644
--- a/pages/mailbox/read-mail.html
+++ b/pages/mailbox/read-mail.html
@@ -3,6 +3,7 @@
   <head>
     <meta charset="UTF-8">
     <title>AdminLTE 2 | Read Mail</title>
+    <!-- Tell the browser to be responsive to screen width -->
     <meta content='width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no' name='viewport'>
     <!-- Bootstrap 3.3.4 -->
     <link href="../../bootstrap/css/bootstrap.min.css" rel="stylesheet" type="text/css" />
@@ -670,4 +671,4 @@
     <!-- AdminLTE for demo purposes -->
     <script src="../../dist/js/demo.js" type="text/javascript"></script>
   </body>
-</html>
\ No newline at end of file
+</html>
