Compare transactional email tools on deliverability, developer experience, and cost.
Resend wins for new projects that want React Email components, a clean modern API, and a generous free tier. Postmark remains the safer pick when transactional deliverability is the entire job and you want a vendor with a long track record of separating transactional from marketing streams.
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| Attribute | Resend | Postmark |
|---|---|---|
| Category | ||
| Pricing Model | freemium | paid |
| Starting Price | Free / $20/mo | $15/mo |
| Free Tier | Yes | No |
| Open Source | No | No |
| Platforms | web | — |
