Mailbox for iOS and Android archives your emails automagically
In a nutshell, it is one of the best mobile email clients available for both Android's Gmail, and Apple's Mail application. The interface is flat, clean, and easy to master. There are numerous gestures to help you deal with your mail quickly, too. A short swipe to the right will archive a message, a long swipe will delete. A short swipe to the left sends a message to the "Snooze" function, where you can set it to bounce the email back into your face at a set time, so you don't forget anything. A long swipe to the left will send a message to a list, so you can organize things that need to be done. Things of that nature, which seem minute, but make your life with that archaic form of communication - the email - quite a bit easier on a mobile device.
Probably the most exclusive feature of Mailbox, however, is the Auto-swipe option that you can enable in the settings. It gradually learns what kind of emails you archive or defer for later viewing, and automates the process for you. That's right, the app's algorithms clean your cluttered inbox, and keep it tidy, without having to sift through tens of emails on a daily basis, at the same time ensuring you don't miss the most important stuff. If you are curious how it all works in practice, you can hit the source links below, as Auto-swipe is now available on both the iOS, and the Android version of the app. You have to first update Mailbox, and then link the app with a Dropbox account for Auto-swipe to start showing, but afterwards your preferences sync between devices on both platforms, which might come in handy for some.