Ive read a few forum posts on unsubscribing , 4-7 years old, none of the solutions work
I noticed you joined Cox Support Forums 4 days ago and joined the Internet group 3 days later. You've since left the Internet group. Just out of curiosity, why did you ask about unsubscribing from all Forum email? Were you receiving Forum email notifications?
Most of the functionality in Settings was disabled over 5 years ago, including the setting to turn Forum email notifications ON/OFF. There's an issue occasionally reported by users who receive Forum email notifications even though they did not and could not have turned on that function. If you still receive Forum email notifications, see Option 2 in my previous reply above.
My Webmail was converted to the new format today. While checking out the new version, I opened a "Forums" folder I had created. It contains Forum email notification messages that were moved to this folder by a Filter Rule I created. I did this to monitor when these emails were being received while moving them out of sight of routine Webmail. These emails were received even though I could not have chosen to get Forum email notifications because this feature has been disabled in Settings for over 5 years. The most recent email was received a week ago. This Filter Rule could just as easily have a "Discard" action which would eliminate ever having to see the Forum email notification messages at all.