Exchange Online mailboxes support SendAs, Send on Behalf Of, and FullAccess permissions. A previous script focused on the FullAccess permission. This version covers all three. It’s also a good example of how you need to pay attention to property sets when writing PowerShell code to use the new Exchange Online REST-based cmdlets.
In addition to mailbox permissions, Exchange Online supports folder-level delegated permissions. Users can create folder delegations through Outlook desktop. Like mailbox permissions, it’s a good idea for tenants to check folder-level delegations to ensure that people don’t keep permissions for longer than they should. We explain how to create a PowerShell script to generate such a report.
Exchange Online makes it easy to assign delegated permissions for user and shared mailboxes. But permissions assigned to people might not be still necessary, so it’s good to do a periodic check. In this post, we describe a script to scan for permissions on Exchange Online user and shared mailboxes and highlight non-standard permissions in a report generated as a CSV file.