This handy freeware E-mail management program lets you fight back against spammers and E-mail viruses and helps protect your privacy. MailWasher lets you check and manage your E-mails before you download them. You can also use it to bounce E-mails back to spammers, so that it looks as though your E-mail address is no longer valid


Link http://www.mailwasher.net/ (on mouseover get a snap preview of the site)