This script could be used to export mailboxes’ information to a CSV file, including SamAccountName, DisplayName, TotalItemSize. Based on these CSV files, script will also generate a report about the variation tendency of user mailbox.
IT Administrators may care about the size of user’s mailbox. It’s good for admins to log this size information every day, and create report when admins want to check the variation tendency of use rmailbox.
You can find more All-In-One Script Framework script samples at https://aka.ms/onescriptingallery