This plugins claims to work like a normal autoresponder free of cost ?? I tried it but it doesnt seem to work ? Please check if its working or not http://freeautoresponder.biz/
well for wordpress you can find loads of plugins depend by what you need honestly ... usually when I`m bored i`m mining myself for nice plugins , I was even able with one plugin to mass email from yahoo hosting lol everyone knows how biatch they are actually it's most crap hosting which someone can get on the net lol ... and yes I mass emailed with them