Thunderbird is a wonderful mail client but I missed something really important to me – Growl like notifications for RSS feeds. When I received new emails, Thunderbird would notify me but it would not notify when I received new RSS updates. I looked online but I could not find a good one solution to enable notifications for RSS feeds (I must be totally blind). I decided to write my own and here it is, a linux growl like feature that sends notifications on new RSS and email messages.

https://addons.mozilla.org/en-US/thunderbird/addon/linux-growl/

Screenshot: