All Integrations can be first connected from the Integrations section of the app. Clicking Edit under the relevant service, will launch a window to review which lists/units are integrated as the default for your campaigns.
Postscript
Postscript will integrate with a specific Keyword set within your Postscript settings.
From Integrations, click Edit within the Postscript section.
Here you can select the relevant Keyword from the dropdown list.
Click Update to confirm.
You can check within the individual popups as well, by clicking on Integration settings, to ensure the Keyword is set.
Open the Editor for the popup.
In the right menu, click on Integration settings.
Click the dropdown arrow beside Postscript settings. This will reveal the Keyword.
