The newly-released Sift app for iPhone and iPad offers yet another gesture-based method for sorting through your emails. The app, which presents you with one email at a time offers you the option to swipe up, down, left, or right to trigger options including marking the email as read, keeping it, deleting it, adding a star and more. Think of it as Tinder, but for your email.
Sift follows up on the two-option Triage email sorting by throwing in four directions and a multitude of options. You choices are:
Mark as read
Mark as spam
You can also easily tap on the reply button in the top right corner of an email to, well, send a reply (or forward said email).
There's a free lite version of Sift with support for a single email account, while the $2.99 paid version offers multiple accounts (with their own colors and grouping).