Find the Unsubscribe Link for Your List
To find the unsubscribe link for a list, click on the list in the Lists & Segments tab.
Click on the lists's Settings tab and locate the "Opt-in & Unsubscribes." section. This sectio contains a link to the generic unsubscribe page for this list.
Where to Edit a List's Unsubscribe Page
This link will take a subscriber to a Klaviyo-hosted unsubscribe page. You can customize this page for a given list by navigating to Subscribe Pages > View All Pages > Unsubscribe.