It's a good practice for each marketing email to have an unsubscribe link so that email recipients could cancel or alter their subscriptions. Most Vine email templates already have an unsubscribe link at the bottom of email by default, but you can also add your own unsubscribe links.
How Unsubscribe Links Work
When an email recipient clicks the Unsubscribe link, a special Unsubscribe web page will open asking the recipient to join or leave subscription lists.
The Unsubscribe page lists all subscription lists that the recipient can subscribe or unsubscribe from. Please note that this means that the recipients will, for example, not see a list with the Allow to Unsubscribe set to No even if they are already members of this list.
If there is only one list a recipient can unsubscribe from then the page will have no lists:
Please note that clicking Unsubscribe from ALL marketing communications will add the visitor person to the No Marketing list but will not remove the person from all subscription lists.