BEEN USING Sanebox for a few weeks and I can say it has eased managing my email a lot. So much that I'm probably going to sign in after the free trial period. It's a little long to explain, so I'll rather point you towards a demo video.
Yes, true; for every person who signs in for the free test period through this link I'm getting a free month, but it's just 5 bucks so it's not like I'm gonna make a killing from this... I promise I recommend this because it's a great idea if your drowning on email as most of us are nowadays.
Plus you're getting the 5$ credit too, so what's not to like?
UPDATE. If you don't feel like sitting through a video, this web page shows what Sanebox does.