Here's how to edit a newsletter subscriber list in Get Clear Sites
1. Login
2. Click the 'Admin' menu found in the top right corner of your website, select 'Newsletter'
3. Click the Subscription List you'd like to edit
4. From here you can edit the name of the list, update settings and also add/remove subscribers from the list
Subscriber List Settings
Public | means that when a newsletter is sent to this list that newsletter will be accessible from the Latest Newsletter link.