You can create a list of recipients who opted out of an email list to keep record of those recipients.

1. Go to View Data.
2. Place a check mark next to the name of the database that contains the opt-outs you wish to export.
3. Click Export in the tool bar on the Database Summary page.
4. Select the Export Opt-Outs Only option and click Next.
5. Verify the information contained on the confirmation page and click Submit.
6. Navigate to Data Jobs to check the status of the export job.
7. When the status of the Export job is complete, click the link to download the file immediately or go to the Export Files folder under Resources.
8. Locate the file, check the box next to it and click Download.