Mailgun vs Postmark: Reliability Comparison

	M Mailgun	P Postmark
Current Status	Operational	Operational
Uptime (30d)	99.969% Best	N/A
Uptime (90d)	99.956% Best	N/A
MTTR	52 min Best	N/A
Incidents (30d)	3	0 Best
Incidents (90d)	5	0 Best
Reliability Score	93.3/100	100.0/100 Best

Recent Incidents

Mailgun Elevated Timeouts for Validations

minor · Invalid Date — Apr 17, 2026

Resolved

minor

Mailgun TLS Certificate Validation Errors for Clients Without SNI

major · Invalid Date — Apr 15, 2026

Resolved

major

Mailgun Elevated 500 errors on Messages endpoint in US

minor · Invalid Date — Apr 7, 2026

Resolved

minor

Mailgun Elevated 401 errors in US Region

major · Invalid Date — Mar 19, 2026

Resolved

major

Mailgun Intermittent API Errors in US Region

major · Invalid Date — Mar 13, 2026

Resolved

major

Frequently Asked Questions

Which is more reliable, Mailgun or Postmark?

Based on our monitoring data, Postmark is currently more reliable than Mailgun. Postmark has a reliability score of 100.0/100 compared to Mailgun's 93.3/100. This score factors in uptime percentage, mean time to recovery, incident frequency, and consistency. Monitor both services with Happy Uptime for real-time alerts.

Which has better uptime, Mailgun or Postmark?

Over the last 30 days, Mailgun has a higher uptime of 99.969% compared to Postmark's N/A. We check both services every 5 minutes from multiple global regions.

Is Mailgun more stable than Postmark?

Postmark has been more stable over the past 90 days with 0 incidents compared to Mailgun's 5 incidents. Fewer incidents generally indicates a more stable service. Use Happy Uptime to track both services and get AI-powered incident analysis.

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Mailgun vs Postmark

Recent Incidents

Frequently Asked Questions

Related Comparisons

Monitor both Mailgun and Postmark with Happy Uptime