Just a quick update to let you folks know that I haven't forgotten about you all and we're actually busy coding the new and improved version of FastIMF (which is being renamed) from scratch.
I'm hoping we will be able to get something out early next year but believe me when I say this is going to be worth the wait! If development at the minute is anything to go by, it should be the only service/application you need for email.
Check back in a few weeks for another update, sorry it seems like a long wait!
As a side note, Exchange 2007 will work with this new version (as will nearly any email server such as Lotus Notes etc)...there's a hint for you!