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How To List Mailbox Sizes in Microsoft Exchange 2007

You want to list out the mailbox sizes in Exchange 2007.


In Exchange 2003 you are able to view the mailboxes for each user in order of size.

Exchange 2007 lacks this feature unfortunately, however there is a simple command that will show mailboxes in descending order of size in Megabytes (MB).

  1. Open Exchange Management Shell.
  2. Copy and paste the following into the prompt and press enter:
    Get-MailboxStatistics | Sort-Object TotalItemSize -Descending | ft DisplayName,@{label=”TotalItemSize(MB)”;expression={$_.TotalItemSize.Value.ToMB()}},ItemCount
  3. The list of all users will then show up in descending order of sizes in MB and item count.

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