When we use the old add-in, COM add-in, Dynamics 365 add-in for Outlook, each email that has been tracked, has two little persons icon and we already know that those emails has been tracked at some point of time.

Now when using the Dynamics app for Outlook, new app, lightweight app, there is no such a feature and the only way to see if an email is tracked or not is to load the app. Sometime this could be very time consuming and it would be great if the same functionality could be implements in future releases and builds as it was on Dynamics 365 add-in for Outlook