Postmark

Send through Postmark with its native SDK or direct HTTP API.

Native SDK

Terminal

pnpm add @postbote/core @postbote/adapter-postmark

src/lib/mailer.ts

import { postmark } from "@postbote/adapter-postmark";

const adapter = postmark({
  serverToken: process.env.POSTMARK_SERVER_TOKEN!,
  messageStream: "outbound",
});

Pass client to inject an existing ServerClient. timeoutMs is forwarded to the SDK.

HTTP adapter

Terminal

pnpm add @postbote/core @postbote/adapter-postmark-http

src/lib/mailer.ts

import { postmarkHttp } from "@postbote/adapter-postmark-http";

const adapter = postmarkHttp({
  serverToken: process.env.POSTMARK_SERVER_TOKEN!,
  messageStream: "outbound",
});

The HTTP adapter accepts baseUrl, timeoutMs, and custom fetch. Postmark accepts at most 50 recipients in its comma-separated fields; the adapter reports an INVALID_MESSAGE error when that limit is exceeded.

Postmark tags.tag is also mapped to the provider's native Tag field.

Postmark

Native SDK

HTTP adapter

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