John, I have no problems using the contact us button it opens up an email to [email protected]
when you post a post or reply the default settings is that you "Add this thread to my Followed Threads" you can uncheck it before you hit the submit button.
You can follow or unfollow a lot of things in your own settings. if you follow a thread you'll get email notifications when someone replies. however you seem to have disabled emails notifications.
if you can't use the contact us them send me a pm