Acompli also has some other useful, though not particularly unique, features. For example, swiping right on email brings up a "Schedule" feature that can be used to resend messages to your inbox "in a few hours," "tomorrow morning" or at a specific time. A leftward swipe lets you archive or, if you continue to swipe, delete a message.
Acompli is one of the the best email apps I've used -- and I test a lot of them. It doesn't try to dramatically rethink email, like Google's Inbox app, which wants you to learn an entirely new interface. Nor does it add lots of features you may not use, as is the case with just about every other email app I've ever reviewed. Instead, Acompli keeps it simple by using a familiar email interface and offering a select set of useful tools.
Will Acompli one day disappear into a Microsoft-branded email app? That's unclear, because Microsoft hasn't revealed its specific plans other than to say it is combining the Acompli team and its Outlook team. Whatever its future, Acompli is available today, it's free, and it's highly recommended.
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