Microsoft Focus (was cluttered) VS Inbox480
Do you receive a lot of non-core business email that you don’t consider spam? Email that falls into the gray space of not very important, but you want to keep anyway. Then Inbox480 is for you. It’s similar to Focus, but also quite different in that it gives you a lot more control over which emails are filtered, it doesn’t share the content of your emails with Microsoft, and it also cleans up after itself, so you don’t need to do regular purges. Check it out here.