Personally I would tell the go to go f u c k himself .. yes mass mail is a pain in the *** but what can he do with your ip? Nuke you? lol It's probably some punk on there anyways who doesn't even know how to hack. I would laugh at him and like use a spam program for checking ur emails if u use ur isp email addy and if u use hotmail just set it to maximum security like only ppl on ur safe list can send you email. If you want. give him my ip and tell him to hack me. I just wouldn't worry about it too much