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Get-EXOMailboxFolderStatistics

Use the Get-EXOMailboxFolderStatistics cmdlet to retrieve information about the folders in a specified mailbox, including the number and size of items in the folder, the folder name and ID, and other information. Exchange PowerShell reference

From the Exchange PowerShell reference 9 parameters Its page in the reference

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Parameters

9 in the Exchange PowerShell reference
-ArchiveThe Archive switch specifies whether to return the usage statistics of the archive mailbox that's associated with the mailbox or mail user.
-DiagnosticInfo
-ExternalDirectoryObjectIdThe ExternalDirectoryObjectId parameter identifies the mailbox that you want to view by the ObjectId in Microsoft Entra ID.
-FolderscopeThe FolderScope parameter specifies the scope of the search by folder type.
-IdentityThe Identity parameter specifies the identity of the mailbox or mail user.
-IncludeOldestAndNewestItemsThe IncludeOldestAndNewestItems switch specifies whether to return the dates of the oldest and newest items in each folder.
-IncludeSoftDeletedRecipientsThe IncludeSoftDeletedRecipients switch specifies whether to include soft-deleted mailboxes in the results.
-PrimarySmtpAddressThe PrimarySmtpAddress identifies the mailbox that you want to view by primary SMTP email address (for example, navin@contoso.com).
-UserPrincipalNameThe UserPrincipalName parameter identifies the mailbox that you want to view by UPN (for example, navin@contoso.onmicrosoft.com).