«Postbox» has Mail.app scared. Very scared.

Postbox makes a very «smart» impression on me. It's basic concepts come across very well, and I can imagine using this software a lot in my workflow.

I've made my point about what surely needs to be done for me to continue using it. (BIG e.g. System Spell Checking and a bit less of Mozillaness and more Cocoaness)

On the other hand, I see you're making a good progress in following up with our desires (Address Book and co.)

Hey! I see a Mail.app replacement coming!! (And believe me, 10 days ago, i did not possible anyone could make a replacement for that already great app)

Cheers, Kudos and Keep the improvements coming!
Chris