Spam is a problem. The first thing that must be done is to form an official definition of Spam. Generally broadcasting junk mail to random addresses is bad. Carefully posed messages targeted to a specific audience and offering pertinent and valuable information the addressee could reasonably expect to be interested in are not so bad. It would be nice if the browser people could create a tag for emails that would allow people to easily screen all non specific messages, but permit traffic on specific topics. Make opening your mail something to look forward to, rather than to dread. Once they figure out how to do that on the web, they can apply it to snail mail.