Postmark Integration Guide

This guide will cover how to integrate your Cue workspace with Postmark.
Overview
- Requirements for Integration
- Create a Cue Flow to connect to Postmark
- Send email using Cue Flow Builder
Requirements for Integration
To set up this integration, you will need:
- An active Postmark server, including the
X-Postmark-Server-Token
. - A
sender_email_address
with a registered and confirmed Sender Signature on your Postmark account. - Access to Flows in your Cue workspace (typically granted with an Admin role).
Create a Cue Flow to connect to Postmark
Once you have the X-Postmark-Server-Token
and sender_email_address
, you now need to set up a flow in Cue that will connect to Postmark.
Send email using Cue Flow Builder
In your flow, there may be scenarios where you'd want email notifications triggered when users reach specific steps. For example, if someone requests a call back, we can collect their details and automatically send an email notification to designated recipients. These notifications can cover various events such as a new booking, a sales enquiry, or a new customer engaging with the system.
See the example below of how we can use the Cue system to make an API call to Postmark to achieve this.

In the JSON payload shown above, you can include up to 50 recipient email addresses, separated by commas.
For more information, visit: Postmark Email API Documentation