---
title: "Postmark.js Email Delivery API for Transactional Messaging"
description: "postmark.js is the official Node.js library for the Postmark API, used to send transactional email, templates, and message streams from code. It is a strong fit for skills that automate outbound notifications, email workflows, and delivery-aware application integrations."
verification: "security_reviewed"
source: "https://github.com/ActiveCampaign/postmark.js"
author: "Postmark"
publisher_type: "Company"
category:
  - "Calendar, Email & Productivity"
framework:
  - "Multi-Framework"
tool_ecosystem:
  github_repo: "ActiveCampaign/postmark.js"
  github_stars: 357
---

# Postmark.js Email Delivery API for Transactional Messaging

postmark.js is the official Node.js library for the Postmark API, used to send transactional email, templates, and message streams from code. It is a strong fit for skills that automate outbound notifications, email workflows, and delivery-aware application integrations.

## Prerequisites

Node.js and a Postmark server token

## Installation

Choose whichever fits your setup:

1. Copy this skill folder into your local skills directory.
2. Clone the repo and symlink or copy the skill into your agent workspace.
3. Add the repo as a git submodule if you manage shared skills centrally.
4. Install it through your internal provisioning or packaging workflow.
5. Download the folder directly from GitHub and place it in your skills collection.

Install command or upstream instructions:

```
npm install postmark
```

## Documentation

- https://postmarkapp.com/developer

## Source

- [Agent Skill Exchange](https://agentskillexchange.com/skills/postmarkjs-email-delivery-api-transactional-messaging/)