Unsubscribe URL – When you use this tag in your content editor, it shows as a URL or a web address in the body of the mail, which takes you to a new page where you can manage all your subscriptions. At this page, you can choose single or multiple subscriptions to unsubscribe from them. You can also rename this by creating a hyperlink of it.
Unsubscribe link – This tag can be used from “Campaign tags” drop down option present in the content editor. In the actual email, this tag is labeled as “manage subscriptions”. When you click on it, will redirect to a new webpage, where you can select single or multiple subscriptions to unsubscribe from them.