SendGrid alternative
A modern SendGrid alternative on EU infrastructure
Looking for a SendGrid alternative? PostStack is an EU-hosted email API with a clean REST surface, no add-on tax, and paid plans from €5 — instead of SendGrid's $19.95 entry point and modular pricing.
Why teams pick PostStack over SendGrid
Predictable pricing, no add-ons
SendGrid bundles deliverability features behind tiers and add-on SKUs. PostStack ships broadcasts, mailboxes, and DMARC reports inside the plan, with a single flat €25/mo dedicated-IP add-on on Pro+ — no tier upsells, no surprise SKUs.
A modern API, not v3
SendGrid's v3 API is functional but verbose, with inconsistent casing and legacy edges. PostStack's API is typed end-to-end, snake_case-free, and built for 2026 developer ergonomics.
EU data residency by default
SendGrid is a Twilio company hosted in the US. PostStack is a Danish company hosting in Helsinki, Finland — a real answer to "where is our data?" for European customers.
Mailboxes alongside the API
SendGrid is send-only. PostStack lets you create real IMAP/POP3 mailboxes on any domain you own — useful for the "send + receive" half of email that SendGrid leaves unsolved.
Data residency at a glance
| SendGrid | PostStack | |
|---|---|---|
| Company HQ | United States (Twilio) | Denmark (EU) |
| Where your email data lives | US by default; EU residency gated to Pro/Premier (added Jul 2025) | Helsinki, Finland — never leaves the EU |
| US CLOUD Act reach | Yes | No |
Even with EU residency enabled, a US parent means CLOUD Act requests can still compel disclosure. Why EU hosting alone isn't enough →
Pricing at a glance
| Volume | SendGrid | PostStack |
|---|---|---|
| 3,000 emails / month | 60-day trial, then paid | Free, forever |
| 10,000 emails / month | ~$19.95/mo | €5/mo |
| 50,000 emails / month | ~$19.95/mo | €15/mo |
| 100,000 emails / month | ~$89.95/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 SendGrid if…
Stay on SendGrid if you need their established US deliverability brand for legacy enterprise contracts, or already integrate the SendGrid Marketing Campaigns suite.
Switch to PostStack if…
Switch to PostStack if you want a clean REST API, simpler pricing, EU data residency, or are tired of paying for add-ons you do not use.
Frequently asked questions
Is PostStack as reliable as SendGrid for transactional sending?
PostStack runs on Postfix on dedicated EU infrastructure with active reputation monitoring, RFC 8058 one-click unsubscribe, DMARC aggregate reporting, and Rspamd pre-flight scoring. Deliverability is on par with SendGrid for the EU+UK send paths.
How is PostStack pricing different from SendGrid?
SendGrid retired its permanent free plan in 2025 — new accounts get a 60-day trial, then must pay from $19.95/mo, with deliverability features gated behind add-ons. PostStack keeps a free tier forever (3,000 emails/month), and Starter is €5/mo for the same volume as SendGrid's entry tier with broadcasts, contacts, and DMARC reports included; mailboxes ship on Pro+, and a dedicated IP is a flat €25/mo add-on on Pro+.
Can I migrate from SendGrid in a day?
Yes. The migration guide at /migrate/sendgrid walks through swapping `@sendgrid/mail` for `@poststack/sdk`. Most teams cut over in under an hour.
Related reading
Editorial deep-dive on API design, pricing, and trade-offs.