Inbox Alias is a new e-mail service that doubles as a spam filtering system. It lets you create multiple e-mail aliases and check them all in the very same location, hence the name of the service. Since you can use such a solution to direct e-mails to any alias address you are effectively covered when it comes to spam.

This service is wholly free, and an account is created more or less instantly – you simply furnish your e-mail address and your name at the same time that you choose a password to go with.