# Postmark: Sending Delays

> Postmark status incident “Sending Delays” on 2026-04-02: impact minor (vendor’s label), 10 h, 1 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/postmark/incidents/491225
Last updated: 2026-04-09T22:31:10Z

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2026-04-02 19:00 UTC · Resolved: 2026-04-03 05:08 UTC · Duration: 10 h
- Updates: 1
- [Vendor status page: https://status.postmarkapp.com/notices/yy9yoi5q3j73vlal-sending-delays](https://status.postmarkapp.com/notices/yy9yoi5q3j73vlal-sending-delays)
- [Company: Postmark](https://rewindex.com/company/postmark.md)

## Timeline of updates

- **resolved** 2026-04-09 22:31 UTC: \[UPDATE\] On April 2nd starting at ~07:00pm UTC, Postmark experienced an incident that resulted in delayed message delivery and webhook notifications for some customers. The issue was caused by an infrastructure configuration change that disrupted internal mail routing. While messages were safely queued in a "Processing" state, they were not delivered until the routing configuration was restored. Service was restored on April 3rd at ~4:20am UTC and the backlog of queued messages began sending immediately. No data was lost during this event. We have since implemented additional monitoring on our internal routing and surrounding sending services to ensure our teams are alerted to processing bottlenecks immediately. We sincerely apologize for the delay and will continue to improve.

## Cite this

Status incident (vendor impact label: minor) posted by Postmark, started 2026-04-02 19:00 UTC, resolved after 10 h, 1 update(s).

- Canonical URL: https://rewindex.com/company/postmark/incidents/491225
- Citation: Postmark, “Sending Delays” (2026-04-02 19:00 UTC). Archived by Rewindex: https://rewindex.com/company/postmark/incidents/491225 (CC BY 4.0).
- Markdown link: `[Postmark: Sending Delays (2026-04-02)](https://rewindex.com/company/postmark/incidents/491225)`


---
Canonical: https://rewindex.com/company/postmark/incidents/491225 · Markdown: https://rewindex.com/company/postmark/incidents/491225.md · JSON: https://rewindex.com/api/v1/companies/postmark/incidents/491225 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-05T16:03:56.708Z