Before you start
Things you need to know:
To export suppressions from a specific list, your contacts must have the ability to remove themselves from specific lists by setting up a preference centre.
Export suppressed contacts from a specific list
Go to Audience > Lists.
Select the Properties icon for the list you want to export suppressions from.
Select the Suppressions tab, then select the checkboxes for the suppressed contacts you want to export.
Expand the Export drop-down menu, and select Export all.
You’re taken to the Exports area. Select Download to download your list suppression export file.