There are a lot of great anonymous email services on the web today but one of the best, at least in my opinion, is Hide My Ass. All you have to do is pick an @hmamail.com address and set an expiration – anywhere from one day to one year. You can set up as many accounts as you want. However, it’s important to note that you can only receive email through your @hmamail.com address. They don’t allow you to send mail because too many people would use their account(s) to send anonymous spam.