Alternatives
Most reliable Postmark alternatives (2026)
Postmark has a reliability score of 68.3/100 with 99.58% uptime over the last 90 days. Here is how every alternative we track compares, ranked by reliability.
Transactional Email APIs alternatives to Postmark
| Alternative | Score | Uptime |
|---|---|---|
| Mailjet#1 transactional email APIVisit site ↗ | 99.6 | 100% |
| Mailtrap Email Sending#2 transactional email APIVisit site ↗ | 98.2 | 99.99% |
| Loops#3 transactional email APIVisit site ↗ | 96.3 | 99.98% |
| Twilio SendGrid#4 transactional email APIVisit site ↗ | 94.8 | 99.98% |
| Mailchimp Transactional (Mandrill)#5 transactional email APIVisit site ↗ | 90.6 | 99.93% |
| SparkPost (Bird)#6 transactional email APIVisit site ↗ | 87.7 | 99.90% |
| Mailgun#7 transactional email APIVisit site ↗ | 83.2 | 99.84% |
| Elastic Email#8 transactional email APIVisit site ↗ | 82.4 | 99.84% |
| Brevo#9 transactional email APIVisit site ↗ | 70.5 | 99.68% |
| Resend#11 transactional email APIVisit site ↗ | 60.5 | 99.39% |
| SMTP2GO#12 transactional email APIVisit site ↗ | 58.4 | 99.17% |