Mailgun outage, August 2025: US email delivery latency
Mailgun reported and resolved an incident: US email delivery latency. It lasted 54 minutes.
OKResolved
From Mailgun's official status page, in their words.
What happened
- Started
- Resolved
- Duration
- 54 minutes
- Impact
- minor
- Affected
- Outbound Delivery
- Investigating
- Identifiednot posted
- Monitoring
- Resolved
Why it happened
Mailgun has not given a cause in its updates. We never guess one.
How it was resolved
Mailgun marked it resolved at 21 Aug 2025, 3:14 am without a written explanation of the fix.
Timeline
Oldest first, from the first notice to the resolution. From Mailgun's official status page, in their words.
- monitoring
Email's from our us-east region may have experienced longer delivery time between 16:00 UTC and 16:20 UTC. The issue is resolved and we are monitoring.
- monitoring
Services are fully operational.
- resolved
This incident has been resolved.
What this means for a business (and what to check now)
- Retry anything that failed during the 54 minutes.
- Enter any payments, bookings or jobs you took another way.
- If a deadline fell inside the window, keep this page as your record of the outage.
The full guide: what to do when a service you rely on is down
Other Mailgun incidents
- Route delays in EU Region, resolved after 1.1 hours
- Route delays in EU Region, resolved after 42 minutes
- Route delays in EU Region, resolved after 58 minutes
- EU Messaging Outage, resolved after 17 minutes
- Microsoft Incident Resulting in Delivery Issues to M365, resolved after 34 minutes
Hear about the next Mailgun incident as it starts
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