Transactional Email APIs · reliability comparison
Brevo vs Mailjet: which is more reliable? (2026)
Mailjet is more reliable than Brevo, scoring 99.6 vs 70.5 out of 100. Over the last 90 days Brevo reported 29 incidents and Mailjet reported 1, with effective uptime of 99.68% and 100% respectively.
Data updated Nov 1, 2026 · How we score
| Metric | Brevo | Mailjet |
|---|---|---|
| Reliability score | 70.5 | 99.6 |
| Rank (transactional email APIs) | #8 | #1 |
| Uptime (90 days) | 99.68% | 100% |
| Incidents (90 days) | 29 | 1 |
| Partial / major outages | 5 | 0 |
| Avg time to resolve | 1h 24m | — |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Brevo and Mailjet differ
- Brevo reported 29× as many incidents as Mailjet over the last 90 days (29 vs 1).
- Brevo had 5 partial or major outages, compared with 0 for Mailjet.
- Brevo's longest outage on record lasted 2h 2m (Oct 1, 2026); Mailjet's lasted 32m (Jun 5, 2026).
90-day uptime
Brevo
Mailjet
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Brevo incidents
- Degraded performanceOct 27, 2026 · resolved in 4h 21m
Affected: Contact Management API, Marketing email tracking links, Transactional emails delivery, Outbound Webhooks, Workflows, SMS Campaigns +4 more
- Degraded performanceOct 26, 2026 · resolved in 2h 11m
Error with doubleOptinConfirmation API
Affected: Contact Management API
- InformationalOct 22, 2026 · resolved in 1h 55m
- Degraded performanceOct 19, 2026 · resolved in 20m
Affected: Account and Settings API
- Degraded performanceOct 15, 2026 · resolved in 10m
Affected: Brevo Tracker, Workflows, Transactional emails tracking links, Transactional emails delivery
- Degraded performanceOct 15, 2026 · resolved in 12m
Delay in Processing Loyalty API request
Affected: Loyalty API
Recent Mailjet incidents
- InformationalSep 4, 2026 · resolved in 32m
Other transactional email APIs to consider
- Mailtrap Email Sending · #2 · 99.99% uptime
- Loops · #3 · 99.98% uptime
- Twilio SendGrid · #4 · 99.98% uptime
- SparkPost (Bird) · #5 · 99.90% uptime
See the full most reliable transactional email apis ranking →