Mailgun outage, 4 September 2026

Microsoft Incident Resulting in Delivery Issues to M365

Started
Resolved
4 Sept 2026, 12:54 UTC (after 34 min)
Impact
Not stated

Last update from Mailgun

Microsoft has resolved the underlying issue, we are seeing deliveries to M365 process normally.

4 Sept 2026, 12:54 UTC

Read the full incident on the official Mailgun status page

Is Mailgun down now?

This page is the record of one past incident. For the live status, see Is Mailgun down right now? - it reads the official status page every 2 minutes.

Other Mailgun incidents

  1. Route delays in EU Region

  2. Route delays in EU Region

  3. EU Messaging Outage

  4. Event Log Delays in US Region

  5. EU Messaging Outage

  6. GCP Reporting Multi Service Outage in US-West1

  7. Email Delivery Failures to Microsoft 365 Domains

  8. Click and Open Tracking Degraded (US Regions)

All recorded Mailgun incidents