The new 7-day retry window prevents users from experiencing dropped batches due to unsuccessful delivery attempts. When a batch of notification events fails to deliver, ENS retries delivery at periodic, decreasing intervals for up to 7 days. After that, retries stop and delivery fails. Previously, ENS suspended callback URLs immediately after a failed delivery.
Where: This change applies to all Marketing Cloud Engagement editions.
SEE ALSO | Developer Guide: Retries and Callback Suspensions