No you'd create your own webpart and place it on a page and in your settings you specify where that location of the page with the webpart you created is.
Essentially a high level is you can have a generic unsubscribe link that takes them to that page and enter their email. Then on button click do a look up of all the subscriptions for that email and then remove them. You could also display a checkbox list of subscriptions that email is associated with and let them choose 1 o many and unsubscribe.