Transactional Email APIs · reliability comparison
Loops vs Mailjet: which is more reliable? (2026)
Mailjet is more reliable than Loops, scoring 99.6 vs 96.3 out of 100. Over the last 90 days Loops reported 1 incident and Mailjet reported 1, with effective uptime of 99.98% and 100% respectively.
Data updated Nov 1, 2026 · How we score
| Metric | Loops | Mailjet |
|---|---|---|
| Reliability score | 96.3 | 99.6 |
| Rank (transactional email APIs) | #3 | #1 |
| Uptime (90 days) | 99.98% | 100% |
| Incidents (90 days) | 1 | 1 |
| Partial / major outages | 0 | 0 |
| Avg time to resolve | 1h 34m | — |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Loops and Mailjet differ
- Loops's longest outage on record lasted 46m (Mar 2, 2026); Mailjet's lasted 32m (Jun 5, 2026).
90-day uptime
Loops
Mailjet
- 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 Mailjet incidents
- InformationalSep 4, 2026 · resolved in 32m
Other transactional email APIs to consider
- Mailtrap Email Sending · #2 · 99.99% uptime
- Twilio SendGrid · #4 · 99.98% uptime
- Mailchimp Transactional (Mandrill) · #5 · 99.93% uptime
- SparkPost (Bird) · #6 · 99.90% uptime
See the full most reliable transactional email apis ranking →