Hi HansChrAndersen,
Thanks for your question and background to the case you are looking at. Microsoft Priva can look across Exchange, SPO, OneDrive and Teams data, and when a policy is set, you can choose to notify users when the actions of the condition are met. For the data minimization policy for example, you can choose to send an email notification to users when they perform an action that matches the policy conditions. You can set the frequency of how often a user can receive an email: daily, weekly, or monthly.
The email digest can also be customized, and you can include training/resources for the user to explore right within the email. If it helps, please also see additional details for user notifications here: User notifications in Privacy Risk Management - Microsoft Priva | Microsoft Learn
Kindly,
Alma