The envelope icon is a notification that something has been updated on your StrongPass App. Tap on it to see a summary of recent App updates. For example, when you import accounts using the Import Accounts Wizard on the Authomate website, you will get a notification when they are received by the App. StrongPass Teams users will get a notification when they receive an account shared by another team member or when their team administrator updates team settings.
Notifications can only be viewed once on the App. To see a summary of your account activity, sign into your Authomate website account and view the Activity Log.