Mailbox's elegant approach, simple design, and system of swipes that handle email and task management make this app worth trying for everyone who uses Gmail on their iPhone. For someone who lives in their inbox, and uses email to manage tasks this may well be the best app to date. The UI is sophisticated and easy to use, as is email composition and reading. But, its long waiting list and exclusive Gmail-iPhone compatibility will exclude some iPhone users from trying the new app out.
The email composition part of the app was what I've come to expect from iPhone email software. For short, simple messages the kind most people send on their iPhones it's perfectly fine. There's nothing really imaginative about it, but that's OK. It works. Mailbox also features image attachments that can come from either the iPhone's image gallery, or the option to take a new image with the iPhone's camera, something that sets it apart from Apple and Google's email app offerings.