Using PowerShell scripts to check hidden mailboxes in Exchange involves using the Get-Mailbox cmdlet, with which administrators can gain insights into the visibility status of mailboxes in their Exchange environment. The steps mentioned below can be used to check hidden mailboxes in your Exchange environment using Windows PowerShell. ManageEngine Exchange Reporter Plus, an extensive tool used for reporting, auditing, monitoring, and creating alerts for critical activities in your Exchange environment, can also be used for this purpose.
The following table is a comparison on how to check hidden mailboxes in Microsoft Exchange using Windows PowerShell and Exchange Reporter Plus.
This open-ended cmdlet lists only the user-created mailboxes that have been hidden from the address list in your Exchange organization.