Our engineers have monitored the fix and confirmed the issue with Unsubscribe API issues has been resolved. All services are now operating normally at this time.
Posted Jul 27, 2021 - 01:16 PDT
Beginning around 11:54PM PT we began experiencing issues with our unsubscribe API. Team has identified the issue and is working to remediate. Customer may experience issues when using unsubscribe API. This does not impact mail send. We will provide another update in the next hour or as soon as more information becomes available.