This was one of my first bigger projects. I saw similar websites and tried to build one of those myself. It became quite a success since it was mentioned in many news magazines. There is also a Firefox extension for the sake of convenience. As I don’t have a lot of spare time left at the moment this project will not be improved in the next few months. But it still does its job and keeps your private email account free of any spam mails.
Website: http://www.temporaryinbox.com (offline)