Threading in Gmail was definitely huge. They beat a lot of desktop mail clients to the punch, too, which always surprised me.
Seems like Branch would become One More Thing To Check, as opposed to a replacement for e-mail. I don't think they're going for an replacement, either. I think I get their point, but I also can't see it as much more than Twitter repackaged with unique slang and a squeaky clean UI.
Haha, I'm sure. As far as product design goes, I think you've done a bang-up job. Individual branches are easy on the eyes and comfortable to consume for extended periods, and the primary actions are easy to identify. congrats on the launch.
Out of curiosity, where does it fit into your workflow specifically? Do you find yourself using either/any of Facebook, Twitter, Email, etc. less in particular?
Email has notoriously not been updated for a while. I remember when Gmail putting threads as conversations being revolutionary.