Feature comparison
| Feature | Relayly | Postmark |
|---|---|---|
| Transactional email API | Yes | Yes |
| Marketing campaigns | Yes | No (transactional only) |
| Built-in email validation | Yes | No |
| Automated IP warmup | Yes | Manual |
| HMAC-signed webhooks | Yes | Yes |
| Official Python & Node SDKs | Yes | Yes |
| One platform for both streams | Yes | Transactional only |
Comparison based on publicly available information and typical configurations; vendor features and plans change — verify current details with each provider.
Why teams choose Relayly
Relayly unifies transactional and marketing email with built-in validation, automated IP warmup, and HMAC-signed webhooks — one API, one dashboard, one bill. Fewer vendors, better deliverability.
FAQ
Is Relayly a good Postmark alternative?
Yes. Relayly covers the same core sending use cases as Postmark and adds built-in email validation, automated IP warmup, and signed webhooks in one platform, so you can consolidate vendors.
Can I migrate easily?
Yes — Relayly offers a REST API, official Python and Node SDKs, and signed webhooks, so migrating your sending and event handling is straightforward. Our team can help with high-volume moves.