How can we prevent removal of Contact Point/How can we run a script when a Contact Point is removed?

Summary:

How can we prevent removal of Contact Point/How can we run a script when a Contact Point is removed?

Content (please ensure you mask any confidential information):

We are running an integration with Eloqua for Contact Points and we are looking to run a trigger when an Email Address is removed or potentially prevent emails from being removed. Can you provide guidance on how this can be achieved?

Version (include the version you are using, if applicable):

24B

Code Snippet (add any code snippets that support your topic, if applicable):