Can I be notified whenever a contact registers or unsubscribes?

No, CleverReach does not offer this functionality. You can get an overview of the growth of your recipient groups within your account any time. Just click on the [Statistics Button] next to the group name.

In the stats you can see much more than just the growth stats, e.g. open rates, bounces, active and inactive customers etc.

Additionally (depending on your user settings) you can receive an automated report via email every Monday. This report gives you an overview of all registrations and unsubscribes. If you would like to receive more detailed information you can only do this via our API. You will find more information on this here.