View/Export Unsubscribes:
Unsubscribes export
This feature allows you to get a copy of Unsubscribe data (subscribers' that have opt out from your list or database) for your own records.
Step 1.
Click on the 'Subscribers' button.
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Step 2.
Click on 'Search Message Types' button.
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Step 3.
Select the list(s) you want to display the unsubscribers for.
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Step 4.
Check the box for 'Email' and select 'In-Active'.
Note: You can select more than one message type. If you select more than message type, you have the option for 'Criteria'.
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Step 5.
Click on 'Submit' to show your 'In-Active' subscribers.
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Step 6.
Click on "Export Subscribers" on the top right of the page