1. To view a list of your unsubscribed contacts, go to "My Campaigns" and click on the "All Activity" submenu.
  2. Click on "Audience Activity" to view the most recent interactions with your contacts. 
  3. To filter and see only unsubscribed contacts, click on the "Filter By" tab, select "Unsubscribed," and click Apply.
  4. You will now see all unsubscribed contacts, including the campaign from which they unsubscribed and the date and time of their action. You can also use the date range filter to view unsubscribes within a specific time period.

For more details on the different ways a contact can unsubscribe, click here.