Transactional Email APIs · reliability comparison
Loops vs Mailtrap Email Sending: which is more reliable? (2026)
Loops and Mailtrap Email Sending are effectively tied on reliability (96.3 vs 98.2). Over the last 90 days Loops reported 1 incident and Mailtrap Email Sending reported 2, with effective uptime of 99.98% and 99.99% respectively. Mailtrap Email Sending resolves incidents faster on average (6m).
Data updated Nov 1, 2026 · How we score
VS
| Metric | Loops | Mailtrap Email Sending |
|---|---|---|
| Reliability score | 96.3 | 98.2 |
| Rank (transactional email APIs) | #3 | #2 |
| Uptime (90 days) | 99.98% | 99.99% |
| Incidents (90 days) | 1 | 2 |
| Partial / major outages | 0 | 0 |
| Avg time to resolve | 1h 34m | 6m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Loops and Mailtrap Email Sending differ
- Mailtrap Email Sending reported 2× as many incidents as Loops over the last 90 days (2 vs 1).
- Mailtrap Email Sending fixes problems faster: 6m on average, against 1h 34m for Loops (15.9× quicker).
- Loops's longest outage on record lasted 46m (Mar 2, 2026); Mailtrap Email Sending's lasted 2h 57m (Nov 18, 2025).
90-day uptime
Loops
Mailtrap Email Sending
- 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 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
- 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 →