Option 1: Viewing your Unsubscribes from Within Contacts
At the top of your screen, click on the contacts tab
From the frequency preference drop down click Unsubscribe. A list will generate showing all of your contacts who have unsubscribed.
Option 2: Exporting from Reports
Step 1: At the top of your screen, click on the Reports tab.
Scroll down to view sent newsletters and click on the title of a newsletter to expand the information for that send.
Step 2: Click the Export to CSV. button, the file will download to your computer. Here you will see a full export of everyone the newsletter was sent to as well as a delivery status/ unsubscriber status.