Sometimes a contact may request that you unsubscribe them from future emails, or perhaps you no longer want to email a contact going forward. Here's how you can complete this --

Select the checkbox to the left of one or more contact's names.

Click the Actions dropdown > show more > Unsubscribe Contacts.

Confirm the unsubscribe in the modal box that appears.

Click the Actions dropdown > Unsubscribe Contact.

To help you stay compliant with privacy standards automatically, unsubscribe preferences are permanently preserved, if a contact is deleted and added back into the account they will retain their unsubscribe status.