This little envelope plugs into your USB port and lights up when you get mail? With 9 different colors and 10 (optional) sound indicators, you can set it up so you know exactly which account got mail. Blue? Somebody's mentioned you on Twitter. Orange? New mail on your personal account. The web site says it supports Gmail, Yahoo, Outlook Express, Facebook, Twitter, Weibo, and POP3 accounts (you can enter your own server details). Plus if you're constantly bumping up against a capacity issue on your mail server, you can set it to warn you if you're nearly there.