Privacy Policy regarding an add in:

 When the add in is installed all user information stays within your tenancy.  The add in only displays the information in a site of your choosing and in a way you determine.  Microsoft may share information with us about the purchaser, but only to the extent and purpose defined by Microsoft and their app store.

Requests for support and other communications:

When you send us emails or other communications, such as customer support inquiries, we maintain those communications and their contents so that we can resolve your inquiries or otherwise assist you.