Changes / Mailgun / Delayed sending in EU

Mailgun: Critical incident: Delayed sending in EU

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

Major incidentLabel: degradation (model (Jev), 100%)Changed Detected Source: stspg.io

What changed

AddedTitle#1
Before: not present
After: Delayed sending in EU
AddedImpact#2
Before: not present
After: critical
AddedStatus#3
Before: not present
After: resolved
AddedStart time#4
Before: not present
After: 2026-05-25 12:18 UTC
AddedResolved time#5
Before: not present
After: 2026-05-25 15:55 UTC
AddedAffected components#6
Before: not present
After: API, Email Services - API, Email Services - Outbound Delivery, Outbound Delivery
AddedUpdateinvestigating#7
Before: not present
After: We are currently investigating this issue.
AddedUpdateinvestigating#8
Before: not present
After: We are continuing to investigate this issue.
AddedUpdateinvestigating#9
Before: not present
After: A fix has been implemented and we are monitoring the results.
AddedUpdatemonitoring#10
Before: not present
After: A fix has been implemented and we are monitoring the results.
AddedUpdateinvestigating#11
Before: not present
After: We are currently investigating this issue.
AddedUpdateinvestigating#12
Before: not present
After: We are continuing to investigate this issue.
AddedUpdateidentified#13
Before: not present
After: The issue has been identified and a fix is being implemented.
AddedUpdateidentified#14
Before: not present
After: We are continuing to work on a fix for this issue.
AddedUpdatemonitoring#15
Before: not present
After: A fix has been implemented and we are monitoring the results.
AddedUpdateresolved#16
Before: not present
After: This incident has been resolved.

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

History of this incident

When (UTC)ChangeKind
Critical incident: Delayed sending in EU (this change)
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.
Major incident

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