yea i thought of that but whenyou put in your name wouldn't the server say that you already have a key under that same name ?
As far I know, the checking is made with the email address.
Same email, same key (free).
In these cases, I suggest you change your email (if possilble) or, at least, check them by webmail and not by your email program.
Spam killers applications should be well configurated, otherwise, you'll lose the email.