How can I stop receiving email copies of forum posts?

Click the User Menu icon in the top-right corner of the screen, then select Preferences. On the next page, click "Forum Preferences". Change the Forum Auto-Subscribe setting to “No: don’t automatically subscribe me to forums”. This will prevent you from being automatically subscribed to forums you post in. You can also change your Email Digest Type to "Complete" or "Subjects". Selecting either option will generate one comprehensive, daily email with all of your forum notifications rather than one email for each Forum notification.