Campaign Monitor and Leaky Paywall setup
Here is how to find your Campaign Monitor LIST ID:
1. Login to your Campaign Monitor account
2. Select ‘Lists and subscribers’ from the top menu
3. Click on the list that you want to integrate
4. With the list detail page displayed, click the Settings link on the left side then scroll down to the List API ID section and click the Copy button to save then paste the list ID into Leaky Paywall.