Postmark is an email delivery service (SMTP). It can be used as an alternative to or alongside Kartra's built-in service, KartraMail.

How to integrate Postmark with Kartra

You will need a Postmark account and Server API Key to complete this guide. Visit Postmark's website to create an account.

Create Kartra integration

  1. Go to Settings > Integrations
  2. Click + Integration in the top right
  3. In the Providers window, select Postmark and click Next
    Integrate Postmark with Kartra
  4. In a separate browser tab or window, log in to Postmark to collect your API Key.

In Postmark

  1. Create or select a Server
  2. Navigate to the API Tokens sectionPostmark 01
    Please Note: Postmark may change their website from what appears in this document but there should still be an API section with the API key information.
  3. Copy the complete contents of the Server API token field

Go back to Kartra

  1. Paste the Server API token from Postmark into the API Key field in the Kartra configuration window.
  2. Name your integration. This is to help you identify it in your account.
  3. Add a sender name and send-from / reply-to email addresses.
  4. Click Create to save the integration.

If you are unable to find the "API Key" on Postmark or have issues with utilizing the webhook on Postmark, please contact Postmark support.

If your Postmark API Key does not work via Kartra, please contact Kartra support.

What about message streams?

Message streams are used by Postmark to help you separate different types of communications into different sending channels. When integrated with Kartra, it is not necessary to configure message streams in your Postmark account. 

Communication channels are handled on the Kartra side, keeping your transactional and commercial messages separate for optimal deliverability.