If the CartStack tracking javascript snippet is mistakenly removed from the website then the campaigns stop working or visitors start receiving abandonment emails after they purchase (this is bad!).
Email alerts would be a great way to stay on top of this to make sure campaigns are running properly.
So, if CartStack stops tracking cart abandoners or purchases the system would automatically email the account holder about the issue. Since some sites are busier than others, you will be able to set a timing threshold (eg: email me if no orders are tracked in last 7 days).