# WorkOS: Elevated errors during email delivery

- Impact (vendor’s label): major
- Status: resolved
- Started: 2026-07-27 10:05 UTC · Resolved: 2026-07-27 13:04 UTC · Duration: 3.0 h
- Updates: 5
- [Vendor status page: https://stspg.io/1qrm50d6r7w9](https://stspg.io/1qrm50d6r7w9)
- [Company: WorkOS](https://rewindex.com/company/workos.md)

## Summary

WorkOS reported a major email-delivery degradation starting 2026-07-27 10:05 UTC and resolved at 2026-07-27 13:04 UTC, lasting 2 h 58 min. An initial mitigation did not fully resolve the elevated errors; WorkOS applied a refined mitigation and confirmed delivery rates had recovered. _(machine-written, sol)_
## Timeline of updates

- **investigating** 2026-07-27 10:05 UTC: We are investigating elevated errors during delivery of emails.
- **monitoring** 2026-07-27 11:03 UTC: We have implemented a mitigation and are continuing to monitor.
- **investigating** 2026-07-27 11:20 UTC: Our mitigation did not fully resolve the issue. We are continuing to investigate.
- **monitoring** 2026-07-27 12:11 UTC: We have applied a refined mitigation and are continuing to monitor delivery rates.
- **resolved** 2026-07-27 13:04 UTC: Delivery rates have recovered.

## Rewindex changes for this incident

- 2026-07-27 10:05 UTC: [Major incident: Elevated errors during email delivery](https://rewindex.com/change/i76e1b39d67e7e4.md)


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Canonical: https://rewindex.com/company/workos/incidents/64wkfhb0xvnn · Markdown: https://rewindex.com/company/workos/incidents/64wkfhb0xvnn.md · JSON: https://rewindex.com/api/v1/companies/workos/incidents/64wkfhb0xvnn · Generated 2026-10-18T13:28:04.429Z