Gotcha... we do not 'integrate' as such with ESPs. We are ESP-agnostic, with the platform generating a snippet of HTML that can be placed in any ESP or HTML email builder.
The Tag is added to the HTML in the same way a static image is added, in the place where the image should be displayed. You only need to add the Tag into the HTML once per Tag.
To see the Tag working, save the html and open in a browser as the Tag will work as normal when viewed in a web browser.