OddPost

I'm considering moving away from outlook for a new internet based email client (that look pretty close to outlook) called oddPost.

They have a spam filter, address book, calendar(in final stages), support for pop3/imap accounts, and a spell checker.  Features they are working on include mail filters(like outlook rules). As of right now the only things I would like that aren't already there or on the way are an ability to import/explort mail and a news feed reader like newsgator.  Those are the main to things that are holding me back from doing this right now. 

Well check out the demo at http://www.oddpost.com ,  What do you guys think? Is anyone already using it, if so what do you think?