LXer: Google Tweaks Gmail to Help Limit Spam
 

Published at LXer:

In the early days of email, getting junk messages into the hands of recipients wasn’t difficult. The real challenge was getting a list of valid email addresses to hit. Those lists were sold on underground forums and passed around on CDs among spammers. Junk email filters were in their infancy and not very effective. Spammers would make small tweaks to their subject lines or the domains they were using and usually have no trouble evading the filters. As anti-spam techniques improved over the years and reputation systems and other predictive techniques came into play, spammers have had a much more difficult time getting their messages into inboxes.

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