Free Nodd.js API for Easy Emails Creation & Sending

Getting Started with Postmark.js

The recommend way to install Postmark.js is using NPM. Please use the following command for a smooth installation.

npm install postmark 

Create & Send Email Messages inside Node.js

The open source Postmark.js API makes it easy for software developers to create and send a simple email messages with ease inside Node.js applications. Moreover, it allows software developers to send transactional emails (such as password resets, account confirmations, and receipts) with ease. The API handles delivery, ensuring emails reach inboxes quickly. The following example shows how to initialize the Postmark client using your Postmark server API token. Then, you call the sendEmail() method to deliver a transactional email. The response contains details of whether the email was successfully sent or if there were any errors.

 
const postmark = require("postmark");

// Initialize client with your Postmark server API token
const client = new postmark.ServerClient("your-server-api-token");

// Send an email
client.sendEmail({
  "From": "sender@example.com",
  "To": "recipient@example.com",
  "Subject": "Test Email",
  "TextBody": "Hello from Postmark!",
}, function (error, result) {
  if (error) {
    console.error("Unable to send email:", error.message);
  } else {
    console.log("Email sent successfully:", result);
  }
});

 

Sending Batch Emails inside Node.js Apps

The Postmark.js library provides a very useful method for sending multiple emails in a single API request inside Node.js applications. This feature is particularly useful for notifications, updates, or newsletters where you need to send the same email to multiple recipients. Here is an example that shows, how multiple email objects are passed to the sendEmailBatch() method and send email messages to multiple recipients. Postmark will deliver each of these emails to their respective recipients in a single API call.

 
client.sendEmailBatch([
  {
    "From": "sender@example.com",
    "To": "recipient1@example.com",
    "Subject": "Batch Email 1",
    "TextBody": "This is the first email in the batch.",
  },
  {
    "From": "sender@example.com",
    "To": "recipient2@example.com",
    "Subject": "Batch Email 2",
    "TextBody": "This is the second email in the batch.",
  }
], function (error, result) {
  if (error) {
    console.error("Unable to send batch emails:", error.message);
  } else {
    console.log("Batch emails sent successfully:", result);
  }
});

Email Template Rendering in Node.js Apps

The open source Postmark.js API supports the usage of dynamic email templates. Software developers can create templates in the Postmark web interface and call them through the API, passing variables to customize the content of each email. If users need to use Postmark’s email templates for more dynamic and customized content, postmark.js makes it straightforward. Here’s an example of sending an email using a pre-built Postmark template. In this example, TemplateId refers to a template you’ve created in the Postmark dashboard, and TemplateModel contains the variables that will be injected into the template.

 
client.sendEmailWithTemplate({
  "From": "sender@example.com",
  "To": "recipient@example.com",
  "TemplateId": 123456,  // Replace with your template ID
  "TemplateModel": {
    "name": "John",
    "action_url": "https://example.com/reset-password"
  }
}, function (error, result) {
  if (error) {
    console.error("Unable to send template email:", error.message);
  } else {
    console.log("Template email sent successfully:", result);
  }
});