You can always set up a simple filter in your email software that will automatically transfer your WGT emails to a special folder, so that they don't interfere with your private/work-related emails.
You can also try going to the subforum page, clicking on Sorting and Filtering at the top, and set it to no-email there.
(When submitting a forum post, make sure the Email me replies to this post box is unchecked if you don't wish to be notified about that thread.)