Postmark

Reliable transactional email with strong deliverability and inbound parsing.

Visit Postmark Start free with MailKite

How MailKite fits

Comparing Postmark? MailKite matches inbound parsing with cleaner JSON and adds unlimited free domains + an agent MCP.

See the full MailKite vs Postmark comparison

Send email from Postmark with MailKite

A minimal, copy-paste starter. Swap in your own domain and API key.

send.ts

import { MailKiteClient } from "@mailkite/client";

// One API, your own DKIM-signed domain — no mail server to run
const mailkite = new MailKiteClient({ token: process.env.MK_API_KEY! });

await mailkite.send({
  from: "you@yourdomain.com",        // any address on a verified domain
  to: "user@example.com",
  subject: "Hello from Postmark",
  html: "<p>Sent in milliseconds via MailKite.</p>",
});

Read the sending quickstart

Postmark is a long-established transactional email service with a strong reputation for deliverability and fast delivery. It offers both outbound sending and inbound email parsing (Inbound), with separate streams for transactional and broadcast mail. It's a mature, dependable choice for teams that prioritize inbox placement.

Key features

Transactional + broadcast send streams
Inbound email parsing to webhook
Detailed deliverability analytics and bounce handling
Mature templates and broadcast support

Pricing model

Usage-based, tiered

Questions about Postmark

Does Postmark parse inbound email?

Yes — Postmark has an Inbound feature that parses incoming email and posts it to your webhook.

Postmark vs MailKite for inbound?

Both parse inbound. MailKite ships parsed JSON with threading and auth verdicts, unlimited free domains, and a hosted MCP server for agents. See /alternatives/postmark-inbound.

Is Postmark good for deliverability?

Yes — deliverability is Postmark's core reputation, especially for transactional mail.