View the Unsubscribe Group
Step 1: Navigate to "Group"
First, click My Setup.
Then select Group.
Enter Campaign section, then click the Group button at the top right corner.
Step 2: Choose "Unsubscribe Group"
In the View drop-down list, choose Unsubscribe Group.
Import Unsubscribed Contacts
To import contacts into the unsubscribe group of CRM system, add an additional column with the header name Email Subscription Status in your data file and mark with value Unsubscribe for the contacts.
Proceed with the normal import steps after your unsubscribe data file is prepared. All contacts imported will then be put into the Unsubscribe Group.
To learn more about importing a file, please view: Import Contacts.