# Looking for a Postmark alternative?

> Postmark has a 15-year deliverability reputation and a public Time to Inbox board. Email Fast offers per-message delivery certificates and EU infrastructure.

Canonical: https://emailfast.dev/compare/postmark-alternative

Postmark spent fifteen years earning its deliverability reputation, and its public,
live Time to Inbox dashboard is genuinely unique — nobody else publishes one,
including us. If proven transactional delivery on US infrastructure is the entire
job, Postmark is a strong choice. Our case rests on what they've ruled out: EU
servers (their site: “We currently don't have plans to add servers in the EU”),
message content kept readable for 45 days, and aggregate stats where we mint
per-message proof.

## The comparison

| | Postmark | Email Fast |
|---|---|---|
| Track record | 15-year deliverability reputation; owned by ActiveCampaign | Early access — no live sending history, and we say so |
| Delivery evidence | Public, live “Time to Inbox” dashboard | delivered messages can mint an Ed25519-signed delivery certificate — receiving mail server, TLS details, the server's SMTP response, and timestamps, with the recipient stored only as a keyed hash — chained into a tamper-evident ledger and verifiable without trusting us |
| Message content at rest | Retained readable for 45 days | BYOK organizations can additionally enable at-rest message encryption: recipient, subject, and body stored as ciphertext under per-recipient keys wrapped by the customer's key — revoke the key and the stored content is unreadable everywhere, instantly |
| EU servers | “We currently don't have plans to add servers in the EU” | Dedicated infrastructure in the EU (Germany) |
| Free tier | 100 emails/month | 2,500 emails/month, never expires |
| Security attestation | Cites the data center's SSAE 16 SOC 1 attestation | None yet — first-party, open [security page](/security) |
| Switching incentive | Their compare hub offers to double your first purchase | SendGrid-, Mailgun-, and Postmark-compatible endpoints: point your existing SDK at a new base URL with a new key and keep your code |

:::tradeoffs What at-rest encryption costs
encrypted sends give up click-tracking, send-time optimization, and per-recipient analytics — that is what “we can't read it” costs, and we say so.
:::

## Where Postmark is the right choice

- **History is your criterion.** Fifteen years of focus against our early access is not a close call — if track record decides, they win it today.
- **You value a live delivery dashboard** measured on real traffic, published for anyone to check.
- **You work agent-first.** Postmark publishes llms.txt and an MCP server — the modern developer surface, done properly.
- **You're in the ActiveCampaign ecosystem** already.
- **Their switching offer is real money.** Their compare hub doubles your first purchase when you move to them. If Postmark fits, take it.

## Switching

The Postmark-compatible endpoint accepts your existing `/email` calls — change the
base URL and the key. Start with a [sandbox key](/get-started): sandbox keys (ef_sandbox_…) that run the real pipeline dry: real validation, real rendering, real events, a hosted capture inbox — and no email leaves.
Live delivery opens at launch. The full path: [/migrate/postmark](/migrate/postmark).

*Postmark is a trademark of its owner; Email Fast is not affiliated with or endorsed by them. Facts about Postmark were verified on their public pages on the date above — corrections: [hello@emailfast.dev](/contact).*

## Does Email Fast have a Time to Inbox dashboard?

No. A live board needs live traffic, and we're in early access — publishing one now would be theater. Postmark deserves full credit for theirs. What we offer instead is per-message: delivered messages can mint an Ed25519-signed delivery certificate — receiving mail server, TLS details, the server's SMTP response, and timestamps, with the recipient stored only as a keyed hash — chained into a tamper-evident ledger and verifiable without trusting us.

## Can Postmark read my message content?

Their documentation states message content is retained readable for 45 days. Email Fast content is operator-readable by default too — that's the industry baseline and we won't pretend otherwise — but BYOK organizations can additionally enable at-rest message encryption: recipient, subject, and body stored as ciphertext under per-recipient keys wrapped by the customer's key — revoke the key and the stored content is unreadable everywhere, instantly — and encrypted sends give up click-tracking, send-time optimization, and per-recipient analytics — that is what “we can't read it” costs, and we say so.

## Does Postmark offer EU data residency?

Their site says: “We currently don't have plans to add servers in the EU.” Email Fast runs on dedicated infrastructure in Germany — details on the security page .

## Do I need to rewrite code to switch?

No — SendGrid-, Mailgun-, and Postmark-compatible endpoints: point your existing SDK at a new base URL with a new key and keep your code. For Postmark, existing /email calls work unchanged. The walkthrough: /migrate/postmark .