The Best Extensions for Thunderbird 2.0. Four add-ons for the Mozilla email client which offer extended features. Have I told you how much I am loving my move away from Outlook Express to TB? No, well let me bore you more. Thunderbird is an absolutely superb piece of technology, and the ability to extend the feature set is fantastic. I installed these extensions immediately, and the two that stand out are QuickText and Nostalgy.
Quicktext is an awesome extension which lets you set up instant message templates, so you can trigger replies with a keyword or key press combination. Nostalgy is essential if you keep a lot of folders, as it lets you move and access folders with super fast letter commands. I would add to the list though. The Web Mail extension, which lets you collect Hotmail, Yahoo! and other web mail into your inbox, is also a fabulous plug-in. [Via /.]