Resend alternative
A European Resend alternative that is up to 72% cheaper
Looking for a Resend alternative? PostStack is a European email API with the same modern developer experience, plus EU data residency, IMAP mailboxes, and paid plans starting at €5 — not $20.
Why teams pick PostStack over Resend
Lower entry price
Resend has no paid tier under $20/month. PostStack starts at €5 for 10,000 emails — a 72% saving at the same volume after FX. The free tier is the same 3,000 emails.
EU data residency
Resend hosts on US infrastructure, so customer data is exposed to the US CLOUD Act. PostStack runs in Helsinki, Finland. For European companies handling personal data, that is the difference between "GDPR compliant by configuration" and "GDPR compliant by default."
IMAP mailboxes built in
Resend is send-only. PostStack ships a Dovecot-backed IMAP and POP3 server plus a webmail client. Run your hello@yourdomain.com mailbox on the same platform you send from.
Drop-in SDK
PostStack's SDK takes the same shape as the Resend SDK — `poststack.emails.send({ from, to, subject, html })` — so most teams cut over in under an hour with a one-line import change.
Data residency at a glance
| Resend | PostStack | |
|---|---|---|
| Company HQ | United States | Denmark (EU) |
| Where your email data lives | All account data, metadata, and logs stored in the US | Helsinki, Finland — never leaves the EU |
| US CLOUD Act reach | Yes | No |
Resend's region setting changes where mail is dispatched, not where your data is stored — that stays in the US. Why EU hosting alone isn't enough →
Pricing at a glance
| Volume | Resend | PostStack |
|---|---|---|
| 3,000 emails / month | Free | Free |
| 10,000 emails / month | ~$20/mo | €5/mo |
| 50,000 emails / month | ~$20/mo | €15/mo |
| 100,000 emails / month | ~$35/mo | €30/mo |
Competitor prices are public list prices (USD) verified May 2026; PostStack prices are in EUR. Figures are approximate after currency conversion — check each provider's pricing page for current rates. PostStack overages bill at €0.25 per 1,000 emails — see /pricing for the full breakdown.
Stay on Resend if…
Stay on Resend if you only ship to the US, want React Email's authoring tools without setup, and have no GDPR exposure.
Switch to PostStack if…
Switch to PostStack if you need EU data residency, want the lowest paid tier on the European market, or want IMAP mailboxes alongside the API.
Frequently asked questions
Is PostStack a true Resend alternative?
Yes. The SDK signature, free tier, REST surface, webhook events, and template features are deliberately compatible. Most teams migrate by changing the import and the API key — under an hour.
How does pricing compare to Resend?
PostStack is up to 72% cheaper at the entry tier (€5/mo vs $20/mo for 10,000 emails) and around 60% cheaper at higher volumes. The free tier is the same 3,000 emails per month.
Why pick a European email API over Resend?
EU data residency means your email data never leaves Helsinki, Finland. PostStack is a Danish company subject to EU data protection law, not the US CLOUD Act. If your customers ask "where is the data?" the answer matters.
Does PostStack support React Email?
PostStack accepts plain HTML, so you can render React Email templates server-side and pass the result as `html`. A native React Email integration is on the roadmap.
Related reading
Editorial deep-dive on API design, pricing, and trade-offs.