Hi Alan,

When you’re using our own sending service, it’s mandatory to have the “Unsubscribe” link added to the footer.

If you’re sending with a third-party sending method or your own host, you don’t need to add this link though.

It’s important to give your subscribers the option to stop receiving emails from you. Otherwise, they will flag your messages as “Spam” and hurt your reputation as a sender – and ours as well.

Thanks for understanding.