Outbound mail delay reported by some customers

Update timeline

1. investigating Mar 05, 2025, 04:58 PM UTC

   We are currently investigating a mail delay in excess of 10 minutes on our outbound servers.

2. identified Mar 05, 2025, 05:58 PM UTC

   While some customers report an outbound mail delay in excess of 60 minutes, we have identified the issue and are working on a solution. An additional report has been filed demonstrating ~10 minute delay on Email API.

3. monitoring Mar 05, 2025, 07:10 PM UTC

   We have resolved the root cause of the delay however it will take a few hours for queues to return to normal processing time. We apologize for the inconvenience.

4. monitoring Mar 05, 2025, 08:23 PM UTC

   Observing significant recovery in outbound queue sizes but delays will continue until they unspool. We will continue to monitor.

5. monitoring Mar 05, 2025, 08:34 PM UTC

   New email is flowing normally - email sent from ~11am et until ~3pm et is still unspooling.

6. monitoring Mar 05, 2025, 10:36 PM UTC

   Outbound queues are continuing to drop. We'll continue to monitor until deferred mail is delivered. If you see a "delivery status unknown" in your mail log - very likely it is caught in this delay. Logs should update automatically once queues clear.

7. monitoring Mar 05, 2025, 10:36 PM UTC

   We are continuing to monitor for any further issues.

8. monitoring Mar 05, 2025, 11:40 PM UTC

   Queue sizes have been reduced 90%; monitoring is ongoing until we observe deferrals have resolved.

9. resolved Mar 06, 2025, 12:42 AM UTC

   Deferred mail has been delivered and the incident is now resolved.