Transactional Email APIs · reliability comparison
Loops vs Twilio SendGrid: which is more reliable? (2026)
Loops and Twilio SendGrid are effectively tied on reliability (96.3 vs 94.8). Over the last 90 days Loops reported 1 incident and Twilio SendGrid reported 5, with effective uptime of 99.98% and 99.98% respectively. Twilio SendGrid resolves incidents faster on average (1h 9m).
Data updated Nov 1, 2026 · How we score
| Metric | Loops | Twilio SendGrid |
|---|---|---|
| Reliability score | 96.3 | 94.8 |
| Rank (transactional email APIs) | #3 | #4 |
| Uptime (90 days) | 99.98% | 99.98% |
| Incidents (90 days) | 1 | 5 |
| Partial / major outages | 0 | 0 |
| Avg time to resolve | 1h 34m | 1h 9m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Loops and Twilio SendGrid differ
- Twilio SendGrid reported 5× as many incidents as Loops over the last 90 days (5 vs 1).
- Twilio SendGrid fixes problems faster: 1h 9m on average, against 1h 34m for Loops.
- Loops's longest outage on record lasted 46m (Mar 2, 2026); Twilio SendGrid's lasted 2h 2m (Jul 8, 2026).
90-day uptime
Loops
Twilio SendGrid
- 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 Twilio SendGrid incidents
- MaintenanceOct 29, 2026 · resolved in 1h 26m
[Scheduled] Sendgrid Maintenance Impacting Delivery and Account Configuration
- Degraded performanceOct 24, 2026 · resolved in 50m
Azure Marketplace SendGrid Customers Experiencing Account Management Issues
- InformationalOct 15, 2026 · resolved in <1m
- InformationalOct 2, 2026 · resolved in <1m
- MaintenanceSep 4, 2026 · resolved in 7h 16m
Multiple delivery failures when sending emails to Microsoft or MS based recipients
- MaintenanceAug 24, 2026 · resolved in 22d
Other transactional email APIs to consider
- Mailjet · #1 · 100% uptime
- Mailtrap Email Sending · #2 · 99.99% uptime
- SparkPost (Bird) · #5 · 99.90% uptime
- Mailgun · #6 · 99.84% uptime
See the full most reliable transactional email apis ranking →