Mailgun: Delayed sending in EU

Impact: criticalStatus: resolvedStarted 2026-05-25 12:18 UTCResolved 2026-05-25 15:55 UTC (3.6 h)10 updatesSource: stspg.io

Summary

Mailgun reported critical delayed sending in the EU affecting API and Outbound Delivery services, starting 2026-05-25 12:18 UTC and resolved at 2026-05-25 15:55 UTC, with a reported duration of 3 h 36 min. A fix was implemented and monitored; no cause was stated.

Machine-written from the archived incident (Sol). Check the timeline before relying on it.

Affected components: Email Services - Outbound DeliveryOutbound DeliveryAPIEmail Services - API

Timeline of updates

investigating2026-05-25 12:18 UTC
We are currently investigating this issue.
investigating2026-05-25 12:48 UTC
We are continuing to investigate this issue.
investigating2026-05-25 12:59 UTC
A fix has been implemented and we are monitoring the results.
monitoring2026-05-25 13:00 UTC
A fix has been implemented and we are monitoring the results.
investigating2026-05-25 13:38 UTC
We are currently investigating this issue.
investigating2026-05-25 14:10 UTC
We are continuing to investigate this issue.
identified2026-05-25 14:46 UTC
The issue has been identified and a fix is being implemented.
identified2026-05-25 15:35 UTC
We are continuing to work on a fix for this issue.
monitoring2026-05-25 15:45 UTC
A fix has been implemented and we are monitoring the results.
resolved2026-05-25 15:55 UTC
This incident has been resolved.

Rewindex changes for this incident

Critical incident: Delayed sending in EU 2026-05-25 12:18 UTC

Impact, status and times are the vendor’s own, as last archived. View on stspg.io (opens in new tab). Mailgun profile · Recent Mailgun incidents · Markdown · JSON