Head to head
Mailgun vs Postmark
As a transactional email API, Postmark rates higher on the APIbenchmarks Index, 84.2 to 82.1, a 2.1-point gap. Here is how they compare on each criterion.
Criterion by criterion
| Criterion | Mailgun | Postmark |
|---|---|---|
| Documentation & DX | ||
| Reliability | ||
| Ecosystem & SDKs | ||
| Accessibility | ||
| APIbenchmarks Index | 82.1 | 84.2 |
Specifications
| Mailgun | Postmark | |
|---|---|---|
| Best for | Developer email infrastructure at scale | Fast, high-deliverability transactional mail |
| Free tier | 100 emails/day (forever) | 100 emails/mo (never expires) |
| Pricing | Per monthly email volume | Per monthly email volume |
| Official SDKs | 9 languages | 12 languages |
Is Mailgun better than Postmark?
On the APIbenchmarks Index, Postmark rates higher (84.2 vs 82.1). It leads on the four weighted criteria, but price is reported separately, so the best choice still depends on your budget.