Hello @JosephS321 ,
You can toggle unsubscribe feedback in your account settings. For legal and compliance reasons, we MUST have the email unsubscribe link flow through our system. There wouldn't be a way to have this redirect your external website.
If there isn't an existing integration between the site builder you use (if applicable), then you can look into developing an integration for your site that connects with our API. Otherwise, it'd be a matter of manually syncing the two systems with contact imports and exports.
See also:
Understanding unsubscribed contacts
Importing unsubscribed contacts
The update profile form and including list selection on the unsubscribe page
... View more
