The footer is the area at the bottom of your email that displays the sender's postal address and an unsubscribe link.
Footers are "sticky"—any changes you make using the drag-and-drop composer will automatically apply to all future messages.
In compliance with American law and industry best practices, your footer must include a postal address and an unsubscribe link.
To add the unsubscribe link, simply highlight the word "unsubscribe," click the link icon, and choose the link type "Unsubscribe Page."