I would like to understand and verify specifically what application permissions Adobe Acrobat Reader DC allows. The following is what I have found regarding application permissions:
Have full access to all files user can access - Allows the app to read, create, update, and delete all files the signed-in user can access.
Sign in and read user profile - Allows users to sign-in to the app, and allows the app to read the profile of signed-in users. It also allows the app to read basic company information of signed-in users.
Read user mail - Allows the app to read the signed-in user's mailbox.
Maintain access to data you have given it access to - Allow the app to see and update the data you gave it access to, even when users are not currently using the app. This does not give the app any additional permissions.
Is this accurate? If so, why does the application require access to read a user's mailbox? What information does it collect from the user's mailbox? If a user is not signed in to Adobe Reader but has Microsoft Outlook specified as their default email application within Reader preferences, is anything collected?