This extension provides real-time desktop notifications for Stack Exchange's inbox.
After installing the extension, visit Options and click on the "Grant Token" button. Upon click, a Stack Exchange authentication dialog will open. Grant the token, and the extension will autofill the user ID. Then, you will immediately get notified of the unread message count in your inbox.
(Alternatively, you can manually set the user ID, but then the extension will not be able to count the number of unread messages.)
The extension has been ported to a Firefox add-on since version 1.5!
Install it from https://addons.mozilla.org/en-US/firefox/addon/real-time-desktop-notificat/
The add-on can be configured by clicking on the StackExchange icon in the main toolbar or in the add-on bar (located at the bottom of Firefox's window).
The add-on is optimized for use with XUL notifications, and attempts to keep the notification around until the user (you) explicitly dismisses the notification. If your Firefox uses native notifications, but you prefer XUL notifications, install https://addons.mozilla.org/en-us/firefox/addon/no-native-notifications/ to get XUL notifications instead of native notifications.
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