@MATTHEWS - To opt out of new email notifications from the community just for that specific thread, click "Additional Options" (While Replying or making a post), and then remove the check that says "Email Me when someone replies".
If you want to disable a specific community thread that you already posted, just click the downward arrow and click on "Mute".
If you want to disable email notifications from the community entirely, click on your profile picture, click "My Settings," then click the tab "Subscriptions & Notifications," then enable "Turn Off All Email Notifications." It'll now not Email you for old threads and new ones from the community, but will still email you about your Public Mobile Subscription Account!
