Spam Inspector stops unwanted e-mail from penetrating your Outlook Express inbox. It installs directly into the Outlook Express window, running quietly in the background, scanning and quarantining junk e-mail. The features include automatic spam definition library updates daily; foreign spam blocking; custom filters and enemies lists; automatic friends list management; e-mail bouncing; and more.

Once your inbox is cleaned, Spam Inspector protects your inbox from new spam being delivered. The goal of Spam Inspector is to make your e-mail address invisible to spammers. Spoof spammers by making your e-mail address look invalid. With the click of a button, Spam Inspector will send "automatic delivery failure replies" to the spammers, telling them and their automatic list management software that your e-mail address is not valid.