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Many spam filters have a mechanism that allows users to report mistakes in the spam-filtering process. By reporting the mistakes, the spam filter's accuracy can be improved, resulting in happier users.

But oftentimes, reporting mistakes is not something that's easy for the user to do. It might involve forwarding the message (as an attachment) to a special email address, or looking at the headers of the message and extracting some code. Either way, it usually ends up being more hassle than a user is willing to endure.

I have implemented a hack for GroupWise WebAccess (version 7.0) that adds a "Spam" button to the toolbar of any message. When you click the "Spam" button, a script gets executed that downloads the source of the message and forwards it to an email address that the administrator configures. Then the message gets automatically moved to the Junk Mail folder.

But, as far as the user is concerned, it's just an alternative to the "Delete" button, one that helps eliminate future spam.

Details and files are available on my webpage:
http://jason.long.name/software/webacc-hacks/spambtn.html.

The hack is designed for GroupWise WebAccess 7.0 running on a SLES10 server. Furthermore, it assumes that spam-filter feedback is done by forwarding the message.