AOL’s “Alto” mail client →
This will be easy to make fun of simply because it’s from AOL—and I’m not sure it really fits with the way that I personally use email, which is pretty old school. (Postbox is my weapon of choice, but frankly if Mailsmith had ever deigned to take a bold leap into the late ’90s and support IMAP, I’d probably still be using it.) But it looks like they’re putting some serious thought into this thing.