FlutterMail has the ability to send a notification to you when someone subscribes or unsubscribes from your list. To do this, go to the Lists tab. Find the list you would like to receive subscriber notifications from, and click "Edit."
You will then be taken to that list's information page. Click “Additional & Advanced Settings” to see additional options for the list.
To receive notifications when someone subscribes or unsubscribes, simply add an email address where you would like to be contacted when either of those actions occur. You could also add multiple email addresses by separating them with a comma.