Applies to: Exchange Server 2010

Topic Last Modified: 2011-03-19

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.

Get-MailboxFolderStatistics -Identity <MailboxIdParameter> [-DomainController <Fqdn>] [-FolderScope <Nullable>] [-IncludeOldestAndNewestItems <SwitchParameter>]

Parameter Required Type Description




The Identity parameter specifies the identity of the mailbox. You can use one of the following values:

  • GUID
  • ADObjectID
  • Distinguished name (DN)
  • Domain\Account
  • User principal name (UPN)
  • LegacyExchangeDN
  • SMTP address
  • Alias




The DomainController parameter specifies the fully qualified domain name (FQDN) of the domain controller that retrieves data from Active Directory.




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
  • ManagedCustomFolder
  • Notes
  • Outbox
  • RecoverableItems
  • RssSubscriptions
  • SentItems
  • SyncIssues
  • Tasks

If the ManagedCustomFolder value is entered, the command returns the output for all managed custom folders. If the RecoverableItems value is entered, the command returns the output for the Recoverable Items folder and the Deletions, Purges, and Versions subfolders.




The IncludeOldestAndNewestItems parameter specifies whether to return the dates of the oldest and newest items in each folder.

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" entry in the Mailbox 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.

Error Description

Exceptions Description

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