The company I’ve been working on for the last couple of years is Boxbe, an email overload tool that works with Gmail, Yahoo! Mail, AOL Mail and Google Apps.
Here’s a three minute video that I created some time ago to better explain what Boxbe does and how it might be able to help save you from your overloaded inbox.
Personally, Boxbe made my eight year old Yahoo! Mail account usable again by removing the spam Yahoo! didn’t catch and shutting down all those marketing emails I didn’t really want any more.