NOTE: Royal Mail PPI integration is for adding PPIs only - it does not interact with Royal Mail integration.
Go to the Integrations page and under Add New Integration area click on Royal Mail PPI:
A popup will appear where you have to fill in the details - type the Royal Mail service name and next to it click on the image button to upload the Royal Mail PPI downloaded from your Royal Mail account:
Once you finished adding service names and uploading PPIs, click on Connect.
That's it - Royal Mail PPIs have been added. When shipping orders, make sure to select your label format as PPI label:
Learn how to change your PPI layout or make it default when shipping orders in this article.