Dry Run

Preview sends in staging or CI without calling an adapter.

pnpm add @postbote/plugin-dry-run

import { dryRun } from "@postbote/plugin-dry-run";

const mailer = createPostbote({
  adapter,
  plugins: [dryRun({ enabled: process.env.MAIL_DRY_RUN === "1" })],
});

Enabled dry runs never call the adapter. They return a dry-run-<n> message ID and provider: "dry-run". Use onSend to inspect normalized messages. Observer failures are ignored so preview logging cannot change delivery behavior.

For automated tests, prefer @postbote/testing; dry-run is intended for a running staging or development application.