Changes / WorkOS / Elevated errors during email delivery

WorkOS: Major incident: Elevated errors during email delivery

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 from the diff below (Sol; type: incident degradation). Check the diff before relying on it.

Major incidentLabel: degradation (model (Jev), 59%)Changed Detected Source: stspg.io

What changed

AddedTitle#1
Before: not present
After: Elevated errors during email delivery
AddedImpact#2
Before: not present
After: major
AddedStatus#3
Before: not present
After: resolved
AddedStart time#4
Before: not present
After: 2026-07-27 10:05 UTC
AddedResolved time#5
Before: not present
After: 2026-07-27 13:04 UTC
AddedUpdateinvestigating#6
Before: not present
After: We are investigating elevated errors during delivery of emails.
AddedUpdatemonitoring#7
Before: not present
After: We have implemented a mitigation and are continuing to monitor.
AddedUpdateinvestigating#8
Before: not present
After: Our mitigation did not fully resolve the issue. We are continuing to investigate.
AddedUpdatemonitoring#9
Before: not present
After: We have applied a refined mitigation and are continuing to monitor delivery rates.
AddedUpdateresolved#10
Before: not present
After: Delivery rates have recovered.

First version of this incident archived by Rewindex. View the live incident.

History of this incident

When (UTC)ChangeKind
Major incident: Elevated errors during email delivery (this change)
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.
Major incident

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