Mailbox is a completely redesigned inbox that makes email light, fast, and mobile-friendly. Quickly swipe messages to your archive or trash. Scan an entire conversation at once with chat-like organization. Snooze emails until later with the tap of a button — they’ll return to your inbox automatically so you can focus on what's important now. Mailbox checks your email from the cloud, then delivers it to your phone securely. You can even get push notifications for new messages. Add all your GMail accounts for speedy access on-the-go.
Unfortunately, Mailbox is Gmail only at this time but does plan to expand to other platforms. Additionally, there is a waiting list to get access to the app. Download Mailbox to reserve your spot.
You can download Mailbox from the App Store for free.