I tried Hey, the $99 a year email app that Apple threatened to remove from the App Store, and it completely changed the way I look at my inbox forever

· Hey is a new email app from Basecamp that's designed to help you get the most out of your email.
· It lets you sort emails into categories for newsletters and shipping notifications, and makes it possible to screen emails just like you screen phone calls.
· The email provider, which was initially invite-only, has caught on...