diff --git a/mozilla/extensions/help/resources/locale/en-US/mail_help.xhtml b/mozilla/extensions/help/resources/locale/en-US/mail_help.xhtml
index d89150ce1f1..aebb18464fb 100644
--- a/mozilla/extensions/help/resources/locale/en-US/mail_help.xhtml
+++ b/mozilla/extensions/help/resources/locale/en-US/mail_help.xhtml
@@ -4500,6 +4500,19 @@ to filter unwanted mail.</p>
       continue to work even after you close the Mail window (as long as another
       &brandShortName; application is running).</p>
   </li>
+
+  <li class="win"><strong>Show a tray icon</strong>: Select this if you want
+    &brandShortName; Mail &amp; Newsgroups to display an icon in your system
+    tray (which is usually found in the lower right corner of your screen) when
+    new messages arrive. This icon will stay in the system tray until you have
+    visited one of your folders with new mail or checked for new messages
+    manually.
+    <p style="text-indent: 20px"><img src="images/mail_newmail_trayicon.png"
+      alt=""/>&nbsp;&nbsp;<strong>New mail tray icon</strong></p>
+    <p>When the icon appears, double-clicking it will open the &brandShortName;
+      Mail &amp; Newsgroups main window.</p>
+  </li>
+
   <li class="mac"><strong>Animate the Dock icon</strong>: Select this if you want
     Mail &amp; Newsgroups to bounce the &brandShortName; Dock icon when new
     messages arrive.</li>