Sounded interesting. Unfortunately it's not for normal users but more for programmers. There's no explanation, description on how it works, or how you will classify your mails.

I installed it (easy, snow leopard, uninstaller script included in de .dmg file under utilities) and I could get to the configuration page.
And there it stops: I can create 'buckets' and all kind of other things but I don't know how it's going to work in Mail. Of which there is no mentioning in the 'configure with your mail program' section.

So before screwing up my whole mail usage at the moment, I stopped and uninstalled.

I'm a MAC user now: I am not going to spend an hour on figuring out what it is supposed to do and how I have to change to work with it. That's what I spent too much time on during my windows years.

I'm sure it's technically really nice and lot's of time spent on it.

All I need is to make the use of 'rules' that filter and move mails more easy.

If this can provide that, it doesn't show it.