Posted By The Gmail Team to Official Gmail Blog at 3/19/2012 06:14:00 PM
Posted by Ela Czajka, Software Engineer
Many of our users say the accuracy of our spam filter is one of the key reasons they love Gmail. And while we think you should never have to look in your spam folder, we know some of you may want to know why the messages there were marked as spam.
So starting today, we’ll be showing a brief explanation at the top of each of your spam messages.