MailingCore vs Postmark
Postmark is known for excellent transactional deliverability and a polished DX. MailingCore competes with three cards: a European company with EU data, transactional and newsletter in one platform, and direct frontend sending.
Quick comparison
| Capability | MailingCore | Postmark |
|---|---|---|
| Transactional deliverability | Solid (SPF/DKIM/DMARC) | Excellent, highly regarded |
| European company & EU data | Yes, GDPR-native | US (ActiveCampaign) |
| Newsletter, contacts & sequences | Included | Broadcasts, transactional focus |
| Frontend sending without a backend | Yes (browser SDK) | No — server-side API |
| Versioned templates editable in a panel | Yes (draft/published) | Yes, transactional-oriented |
| Bring your own SMTP per project (e.g. Gmail) | Yes | No |
| Signed webhooks | Yes | Yes |
| Spanish-language support | Yes | Not documented |
Comparison based on public information at the time of writing and our reading of each provider's documentation. Products change — always verify details on the provider's official site.
Choose MailingCore if…
- Your priority is GDPR and EU data residency without intermediaries.
- You want transactional AND newsletter/sequences in the same tool.
- You need to send from the frontend (forms, no-code) as well as the server.
- You value close support in your language and billing in euros.
Postmark may fit you better if…
- You only need transactional and want the most battle-tested deliverability reputation.
- Being a US company isn't a problem for your compliance.
- Its tooling and API speed are already part of your stack.
FAQ
Is MailingCore's deliverability on par with Postmark?
Postmark has spent years polishing its transactional reputation and is a reference. MailingCore verifies your domain (SPF/DKIM/DMARC) for real and applies suppressions before every send; we're a younger European product and we say so plainly. In exchange you get EU data and newsletter in the same platform.
Can I migrate from Postmark?
Yes: verify your domain in the wizard, recreate templates by pasting the HTML with {{mustache}} variables and import your suppressions via API to keep your bounce history.