Currently if you do an email campaign using RENXT, there is nothing added to the constituent record that the action happened, much less if the constituent took an action on the email (opened, clicked, gave, etc.) If you are using REOLX you can add this info to the record after the fact by clicking the "Add this data to RE" button, but there's no way to do that on RENXT. Without that functionality, the marketing email service of RENXT is essentially useless to anyone who wants to have even a mildly sophisticated email strategy.