I currently use ROBO and am happy with it, but I am looking for a 2nd platform option. I mail specifically AOL + GI and would be looking for a solid option for those two. With AOL, it's key to be able to plug in all of the smtp back offs, and throttles. For GI, volume is the key. It seems every month there are new options on the market, I figured I would ask for solid recommendations before going through the search myself. You're welcome to spam your goodies in thread or contact me direct.