Full disclosure: I'm at a YC startup working on a people-centric email service at Post.fm Great to finally see some people adopting a similar approach to us, h

Full disclosure: I'm at a YC startup working on a people-centric email service at Post.fm Great to finally see some people adopting a similar approach to us, however the real trick is figuring out the balance between threads and people. Simply grouping emails by people doesn't work for most professionals who often have threads with multiple people. This is one problem that's taken us years to solve - and only now we finally have an algo that gets the right balance I believe. Interesting fact - Post.fm used to be called unipost.com, so unibox is a very interesting name :)