Transactional Email APIs · reliability comparison
Loops vs Mailgun: which is more reliable? (2026)
Loops is more reliable than Mailgun, scoring 96.3 vs 83.2 out of 100. Over the last 90 days Loops reported 1 incident and Mailgun reported 10, with effective uptime of 99.98% and 99.84% respectively. Loops resolves incidents faster on average (1h 34m).
Data updated Nov 1, 2026 · How we score
| Metric | Loops | Mailgun |
|---|---|---|
| Reliability score | 96.3 | 83.2 |
| Rank (transactional email APIs) | #3 | #7 |
| Uptime (90 days) | 99.98% | 99.84% |
| Incidents (90 days) | 1 | 10 |
| Partial / major outages | 0 | 3 |
| Avg time to resolve | 1h 34m | 1h 43m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Loops and Mailgun differ
- Mailgun reported 10× as many incidents as Loops over the last 90 days (10 vs 1).
- Mailgun had 3 partial or major outages, compared with 0 for Loops.
- Loops's longest outage on record lasted 46m (Mar 2, 2026); Mailgun's lasted 3h 37m (May 25, 2026).
90-day uptime
Loops
Mailgun
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Loops incidents
- Degraded performanceSep 11, 2026 · resolved in 1h 34m
Delay in email metric processing
Affected: App
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
Other transactional email APIs to consider
- Mailjet · #1 · 100% uptime
- Mailtrap Email Sending · #2 · 99.99% uptime
- Twilio SendGrid · #4 · 99.98% uptime
- Mailchimp Transactional (Mandrill) · #5 · 99.93% uptime
See the full most reliable transactional email apis ranking →