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Applies to: Exchange Online, Exchange Server 2016

This cmdlet is available in on-premises Exchange Server 2016 and in the cloud-based service. Some parameters and settings may be exclusive to one environment or the other.

Use the Get-MailboxFolderStatistics 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.

For information about the parameter sets in the Syntax section below, see Syntax.

Get-MailboxFolderStatistics -Identity <GeneralMailboxOrMailUserIdParameter> [-Archive <SwitchParameter>] <COMMON PARAMETERS>

Get-MailboxFolderStatistics [-AuditLog <SwitchParameter>] [-Identity <GeneralMailboxOrMailUserIdParameter>] <COMMON PARAMETERS>

COMMON PARAMETERS: [-DomainController <Fqdn>] [-FolderScope <Calendar | Contacts | DeletedItems | Drafts | Inbox | JunkEmail | Journal | Notes | Outbox | SentItems | Tasks | All | ManagedCustomFolder | RssSubscriptions | SyncIssues | ConversationHistory | Personal | RecoverableItems | NonIpmRoot | LegacyArchiveJournals | Clutter>] [-IncludeAnalysis <SwitchParameter>] [-IncludeInternalAccessFolders <SwitchParameter>] [-IncludeOldestAndNewestItems <SwitchParameter>] [-IncludeRecoverableItems <SwitchParameter>]

This example doesn't specify the FolderScope parameter and retrieves all the information about the user Chris in the Contoso domain.

Get-MailboxFolderStatistics -Identity contoso\chris

This example uses the FolderScope parameter to view the statistics for calendar folders for the user Chris.

Get-MailboxFolderStatistics -Identity Chris -FolderScope Calendar

This example uses the Archiveswitch to view the statistics for Ayla's archive.

Get-MailboxFolderStatistics -Identity Ayla@contoso.com -Archive

This example uses the IncludeAnalysisswitch to view the statistics of Tony's Recoverable Items folder.

Get-MailboxFolderStatistics -Identity "Tony" -FolderScope RecoverableItems -IncludeAnalysis

You need to be assigned permissions before you can run this cmdlet. Although all parameters for this cmdlet are listed in this topic, you may not have access to some parameters if they're not included in the permissions assigned to you. To see what permissions you need, see the "Mailbox folder permissions" entry in the Recipients Permissions topic.

A mailbox can have hidden items that are never visible to the user and are only used by applications. The Get-MailboxFolderStatistics cmdlet can return hidden items for the following values: FolderSize, FolderAndSubfolderSize, ItemsInFolder, and ItemsInFolderAndSubfolders.
The Get-MailboxFolderStatistics cmdlet shouldn't be confused with the Get-MailboxStatistics cmdlet. For more information, see Get-MailboxStatistics.


Parameter Required Type Description




The Identity parameter specifies the identity of the mailbox or mail user. You can use any value that uniquely identifies the mailbox or mail user.

For example:

  • Name

  • Display name

  • Alias

  • Distinguished name (DN)

  • Canonical DN

  • <domain name>\<account name>

  • Email address

  • GUID

  • LegacyExchangeDN

  • SamAccountName

  • User ID or user principal name (UPN)




The Archiveswitch specifies whether to return the usage statistics of the archive associated with the mailbox or mail user. You don't need to specify a value with this switch.




This parameter is reserved for internal Microsoft use.




This parameter is available only in on-premises Exchange 2016.

The DomainController parameter specifies the domain controller that's used by this cmdlet to read data from or write data to Active Directory. You identify the domain controller by its fully qualified domain name (FQDN). For example, dc01.contoso.com.




The FolderScope parameter specifies the scope of the search by folder type. Valid parameter values include:

  • All

  • Calendar

  • Contacts

  • ConversationHistory

  • DeletedItems

  • Drafts

  • Inbox

  • JunkEmail

  • Journal

  • LegacyArchiveJournals

  • ManagedCustomFolder

  • NonIpmRoot

  • Notes

  • Outbox

  • Personal

  • RecoverableItems

  • RssSubscriptions

  • SentItems

  • SyncIssues

  • Tasks

The ManagedCustomFolder value returns output for all managed custom folders. The RecoverableItems value returns output for the Recoverable Items folder and the Deletions, DiscoveryHolds, Purges, and Versions subfolders.




The IncludeAnalysisswitch specifies whether to scan all items within a folder and return statistics related to the folder and item size. You don't need to specify a value with this switch.

You should use this switch for troubleshooting purposes, because the command might take a long time to complete.




PARAMVALUE: SwitchParameter




The IncludeOldestAndNewestItemsswitch specifies whether to return the dates of the oldest and newest items in each folder. You don't need to specify a value with this switch.




PARAMVALUE: SwitchParameter

To see the input types that this cmdlet accepts, see Cmdlet Input and Output Types. If the Input Type field for a cmdlet is blank, the cmdlet doesn’t accept input data.

To see the return types, which are also known as output types, that this cmdlet accepts, see Cmdlet Input and Output Types. If the Output Type field is blank, the cmdlet doesn’t return data.

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