With email unsubscription tracking, you'll get details of which recipients have unsubscribed from your emails.
How to Enable Email Unsubscription Tracking
From Google Sheets, click on Extensions > Mailway Mail Merge > Dashboard > New Campaign > Expand Tracking section > Enable Track Unsubscription checkbox.
How to View Email Unsubscription Tracking Report
Open Mailway Mail Merge Dashboard > Reports > Click on Details button of the camapaign you want to see the report for.