Very good but a little raw

Unique idea, light interface, smooth working. I’d like to have the possibility to choose the skin, though (a darker one, for example), and more advanced searches and/or smart folders. I miss the outbox, too (the mailbox where you can find the messages that are being sent).
I think that in a couple of major further versions Unibox will be the reference Mac mail app.

MrGralich about Unibox, v1.1