Dont Wanna Get Emails

go into "thread tools" at the top of the thread you don't want emails from and select "unsubscribe"

you can also change the default in your user cp, under "default thread subscription mode" select "do not subscribe"

we currently don't have a help forum, so i'm going to move this to the site feedback for now.
Yup, click UserCP then 'Edit options' and select the 'do not subscribe' :)