Postmark experienced a major incident on April 21, 2026, lasting 1h 29m. The incident has been resolved; the full update timeline is below.
Update timeline
- investigating Apr 21, 2026, 10:10 PM UTC
Some customers sending from the European Union are experiencing delays in outbound message delivery. Affected messages may appear in a "Processing" state. We are actively investigating the issue and will provide an update shortly.
- investigating Apr 21, 2026, 11:30 PM UTC
The issue has been identified and a fix has been deployed. Previously delayed messages are now sending. We will continue to monitor until the backlog has fully cleared.
- resolved Apr 21, 2026, 11:40 PM UTC
Good news - this issue has been resolved and everything should be working normally now. We're continuing to monitor closely to make sure everything stays stable. Thank you so much for your patience while we worked through this.