subscribe/unsubscribe to threads?

Is there a way to set my preferences to "do not automatically subscribe me to email alerts for every goddam thread I post on; I will stop by and check the forum a couple times a day, and do not need more email everytime someone adds a reply for the rest of eternity. thank you" ?

KFD does this too, but other forums don't - sometimes there's a place to ask for a daily digest rather than up to the minute notifications?

I looked around in preferences/profile but couldn't find anything relevant.

Tips?

Thanks. I can unsubscribe manually on a given thread using a button down near "reply" etc. but each time I post it will resubscribe me, so it will get out of hand when there's more activity and multiple forums.