Transactional Email APIs · reliability comparison
Elastic Email vs Mailchimp Transactional (Mandrill): which is more reliable? (2026)
Mailchimp Transactional (Mandrill) is more reliable than Elastic Email, scoring 90.6 vs 82.4 out of 100. Over the last 90 days Elastic Email reported 3 incidents and Mailchimp Transactional (Mandrill) reported 3, with effective uptime of 99.84% and 99.93% respectively. Mailchimp Transactional (Mandrill) resolves incidents faster on average (3h 4m).
Data updated Nov 1, 2026 · How we score
VS
| Metric | Elastic Email | Mailchimp Transactional (Mandrill) |
|---|---|---|
| Reliability score | 82.4 | 90.6 |
| Rank (transactional email APIs) | #8 | #5 |
| Uptime (90 days) | 99.84% | 99.93% |
| Incidents (90 days) | 3 | 3 |
| Partial / major outages | 1 | 0 |
| Avg time to resolve | 6h 19m | 3h 4m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Elastic Email and Mailchimp Transactional (Mandrill) differ
- Elastic Email had 1 partial or major outage, compared with 0 for Mailchimp Transactional (Mandrill).
- Mailchimp Transactional (Mandrill) fixes problems faster: 3h 4m on average, against 6h 19m for Elastic Email (2.1× quicker).
- Elastic Email's longest outage on record lasted 1h 43m (Sep 1, 2026); Mailchimp Transactional (Mandrill)'s lasted 4h 26m (Sep 15, 2026).
90-day uptime
Elastic Email
Mailchimp Transactional (Mandrill)
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Elastic Email incidents
- Degraded performanceOct 6, 2026 · resolved in 1h 54m
- Degraded performanceSep 22, 2026 · resolved in 15h 21m
- Partial outageSep 1, 2026 · resolved in 1h 43m
Recent Mailchimp Transactional (Mandrill) incidents
- Degraded performanceSep 17, 2026 · resolved in 38m
Delayed Deliveries via Mandrill
Affected: Delayed Deliveries via Mandrill
- Degraded performanceSep 15, 2026 · resolved in 4h 26m
Delayed Deliveries via Mandrill
Affected: Delayed Deliveries via Mandrill
- Degraded performanceSep 1, 2026 · resolved in 4h 8m
Affected: Mandrill/Transactional Delays
Full Mailchimp Transactional (Mandrill) reliability report →
Other transactional email APIs to consider
- Mailjet · #1 · 100% uptime
- Mailtrap Email Sending · #2 · 99.99% uptime
- Loops · #3 · 99.98% uptime
- Twilio SendGrid · #4 · 99.98% uptime
See the full most reliable transactional email apis ranking →