Want to try out Polymail on the Mac or your iPhone? That’s no problem now that it doesn’t require an invitation to download. Polymail is an alternative email app for iOS and OS X that lets you track email messages and receive notifications when they’ve been read, schedule when a message is sent, “snooze” messages for later reference, and even unsend messages. You can download the Mac version at the Polymail website, and the iOS version at Apple’s App Store.
Check It Out: Polymail for iOS and OS X Drops Invitation Requirement