1. Log in to your Merchant Center and navigate to the "Contacts" tab
2. Click "Manage Lists" on the right and choose which list you would like to edit
3. Choose "Edit List Settings," then "Edit Auto-Send Settings"
4. Switch off any campaigns that you don't want to send to this list. (Example: switch off the Review Us campaign for a list of customer prospects)
5. Once you have made your preferred changes, click "Save Settings"