Apple announced iOS 8 today during its Worldwide Developer Conference, including several new features for its default Mail client. Among those new features were new gestures for quickly handling messages by swiping. Swiping from left to right allows you to mark a message as unread, while swiping right-to-left presents options for deleting or archive messages and more.
The app also now intelligently detects invitations and other potential calendar events and presents a banner at the top of the message that offers to create that event auotmatically. New features have been added to the compose screen as well, allowing users to swipe down on a draft to quickly dismiss it, access their other mail, and return to the draft with a few taps.