Transactional Email APIs · reliability comparison
Loops vs Resend: which is more reliable? (2026)
Loops is more reliable than Resend, scoring 96.3 vs 60.5 out of 100. Over the last 90 days Loops reported 1 incident and Resend reported 23, with effective uptime of 99.98% and 99.39% respectively. Loops resolves incidents faster on average (1h 34m).
Data updated Nov 2, 2026 · How we score
| Metric | Loops | Resend |
|---|---|---|
| Reliability score | 96.3 | 60.5 |
| Rank (transactional email APIs) | #3 | #11 |
| Uptime (90 days) | 99.98% | 99.39% |
| Incidents (90 days) | 1 | 23 |
| Partial / major outages | 0 | 4 |
| Avg time to resolve | 1h 34m | 3h 39m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Loops and Resend differ
- Resend reported 23× as many incidents as Loops over the last 90 days (23 vs 1).
- Resend had 4 partial or major outages, compared with 0 for Loops.
- Loops fixes problems faster: 1h 34m on average, against 3h 39m for Resend (2.3× quicker).
- Loops's longest outage on record lasted 46m (Mar 2, 2026); Resend's lasted 2h 39m (Aug 8, 2026).
90-day uptime
Loops
Resend
- 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 Resend incidents
- Degraded performanceOct 26, 2026 · resolved in 23m
Affected: Email Events
- Degraded performanceOct 23, 2026 · resolved in 49m
Intermittent latency spikes on our emails API
Affected: Single Email, Broadcast Emails, Batch Emails, Scheduled Emails
- Degraded performanceOct 10, 2026 · resolved in 1h 9m
Delayed new team provisioning and contact webhook delivery
Affected: Dashboard, General API, Webhooks
- Degraded performanceOct 9, 2026 · resolved in 23m
Delayed new team provisioning and contact webhook delivery
Affected: General API, Webhooks, Dashboard
- Degraded performanceOct 1, 2026 · resolved in 52m
- Degraded performanceSep 26, 2026 · resolved in 2h 46m
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 →