Transactional Email APIs · reliability comparison
Mailgun vs Mailtrap Email Sending: which is more reliable? (2026)
Mailtrap Email Sending is more reliable than Mailgun, scoring 98.2 vs 83.2 out of 100. Over the last 90 days Mailgun reported 10 incidents and Mailtrap Email Sending reported 2, with effective uptime of 99.84% and 99.99% respectively. Mailtrap Email Sending resolves incidents faster on average (6m).
Data updated Nov 1, 2026 · How we score
VS
| Metric | Mailgun | Mailtrap Email Sending |
|---|---|---|
| Reliability score | 83.2 | 98.2 |
| Rank (transactional email APIs) | #6 | #2 |
| Uptime (90 days) | 99.84% | 99.99% |
| Incidents (90 days) | 10 | 2 |
| Partial / major outages | 3 | 0 |
| Avg time to resolve | 1h 43m | 6m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Mailgun and Mailtrap Email Sending differ
- Mailgun reported 5× as many incidents as Mailtrap Email Sending over the last 90 days (10 vs 2).
- Mailgun had 3 partial or major outages, compared with 0 for Mailtrap Email Sending.
- Mailtrap Email Sending fixes problems faster: 6m on average, against 1h 43m for Mailgun (17.4× quicker).
- Mailgun's longest outage on record lasted 3h 37m (May 25, 2026); Mailtrap Email Sending's lasted 2h 57m (Nov 18, 2025).
90-day uptime
Mailgun
Mailtrap Email Sending
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Mailgun incidents
- Degraded performanceOct 28, 2026 · resolved in 1h 4m
Affected: Inbound email processing
- Degraded performanceSep 30, 2026 · resolved in 42m
Affected: Inbound email processing
- Degraded performanceSep 14, 2026 · resolved in 58m
Affected: Inbound email processing
- Major outageSep 4, 2026 · resolved in 17m
Affected: API, SMTP, Outbound Delivery, Inbound email processing, Events & Logs, Stats and Analytics
- InformationalSep 4, 2026 · resolved in 34m
- Degraded performanceAug 31, 2026 · resolved in 7h 14m
Affected: Events & Logs
Recent Mailtrap Email Sending incidents
- MaintenanceOct 8, 2026 · resolved in 38m
- Degraded performanceSep 16, 2026 · resolved in 6m
- Degraded performanceSep 16, 2026 · resolved in 6m
Other transactional email APIs to consider
- Mailjet · #1 · 100% uptime
- Loops · #3 · 99.98% uptime
- Twilio SendGrid · #4 · 99.98% uptime
- SparkPost (Bird) · #5 · 99.90% uptime
See the full most reliable transactional email apis ranking →