Thunderbird 3 proves desktop MUA's alive & kic

Doctor O writes: Ars Technica has taken a first look at the freshly released Thunderbird 3, concluding that it "delivers some truly innovative features and offers compelling evidence that desktop clients still have a lot of untapped potential and can provide capabilities that complement and exceed the power of even the best Web-based mail offerings." As it's not in the article, I'd like to point out that the Mac version comes with some very nice features of its own, such as Spotlight indexing for mail and system Address Book integration.