the problem i see with it is that it's all client-side filtering. when you access your email account from another computer, a webmail client, an iphone, whatever, all of those messages are still lumped into your inbox unless you have server-side filtering.<p>i still use procmail on my server to shuffle messages into imap folders before any of the clients see them. mailing lists go to separate folders that i never have to look at on my phone and my inbox stays clean so that new mail notifications on my phone actually mean something important has come through.