Transactional Email APIs · reliability comparison
Resend vs Twilio SendGrid: which is more reliable? (2026)
Twilio SendGrid is more reliable than Resend, scoring 94.8 vs 60.5 out of 100. Over the last 90 days Resend reported 23 incidents and Twilio SendGrid reported 5, with effective uptime of 99.39% and 99.98% respectively. Twilio SendGrid resolves incidents faster on average (1h 9m).
Data updated Nov 1, 2026 · How we score
| Metric | Resend | Twilio SendGrid |
|---|---|---|
| Reliability score | 60.5 | 94.8 |
| Rank (transactional email APIs) | #10 | #4 |
| Uptime (90 days) | 99.39% | 99.98% |
| Incidents (90 days) | 23 | 5 |
| Partial / major outages | 4 | 0 |
| Avg time to resolve | 3h 39m | 1h 9m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Resend and Twilio SendGrid differ
- Resend reported 4.6× as many incidents as Twilio SendGrid over the last 90 days (23 vs 5).
- Resend had 4 partial or major outages, compared with 0 for Twilio SendGrid.
- Twilio SendGrid fixes problems faster: 1h 9m on average, against 3h 39m for Resend (3.2× quicker).
- Resend's longest outage on record lasted 2h 39m (Aug 8, 2026); Twilio SendGrid's lasted 2h 2m (Jul 8, 2026).
90-day uptime
Resend
Twilio SendGrid
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
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: Webhooks, Dashboard, General API
- Degraded performanceOct 1, 2026 · resolved in 52m
- Degraded performanceSep 26, 2026 · resolved in 2h 46m
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
- Loops · #3 · 99.98% uptime
- SparkPost (Bird) · #5 · 99.90% uptime
See the full most reliable transactional email apis ranking →