Everwake

Mailnesia is temporary disposable webmail service, handy if you don't want to expose your real email for website registrations, avoid SPAM and unwanted commercial email. No registration or password  required,  just type whatever username or simply click random name generator to use it. Support HTML and RSS feed for the email box so you can keep an eye on it.

This is one of the best anonymous email tool out there. Use it wisely and don't use this for sensitive information, anyone could read your inbox after guessing game