One link, and it works.

Every message we send carries an unsubscribe link with a signed, single-use token in it. Following that link removes your address, immediately and permanently, from every list we hold — there is no confirmation step, no survey, and no offer to reduce the frequency instead.

This page cannot do it for you, because it deliberately holds no key that could. Use the link in the message itself. If you no longer have the message, ask through the demo form and it will be done by hand.