Postmark incident
Open Webhook Delays
Resolved after 1 day.
- Started
- Ended
- Worst state
- Degraded
- On Postmark’s status page
- Source
Timeline
- Postmark status page · Reported Open Webhook Delays
- Postmark status page · Resolved The issue is now fully resolved. We are continuing to improve our systems, observability, and monitoring to prevent future occurrences. Thank you for your patience. Starting August 18th at ~9:34am CT (~14:34 UTC), Postmark experienced delays in delivering open webhook events. New open events resumed delivery on August 19th at ~8:47am CT (~13:47 UTC), and all backlogged events completed re-delivery at ~4:52pm CT (~21:52 UTC).
Cite this incident
Site Qwality, “Open Webhook Delays,” Aug 18, 2026, https://siteqwality.com/is-postmark-down/incidents/postmark-202608181434/
Free to quote with a link to this page.