Yes, the Sports Card Forum website has the "TTM Manager" page (you'll see the tab at the top of the homepage), and within there you will find a wealth of addresses to use for mailing purposes and the success rate users have gotten from each one. It's free, easy to use, and a great resource for getting your feet wet again in the mailing hobby. I've heard great things about Harvey's books as well, but haven't invested in them yet.
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