Divmod Quotient brings together your email, IM/IRC and IP telephony. Having not tried it yet, it looks a little like Zoe. [Hack the Planet]
Looks like a very cool project that will allow for Bayesian spam filtering, indexing of mail including IMAP, as well as safe (no image loading) mail. I love projects like this and today use Zoe which indexes my mail, but does not include Spam filtering. For that I’ve been messing with SpamSieve when I am in Mail.app and Moz’s built in when I read from within the browser.
Right now it is still a bit too early for me on this one, but something to follow certainly.