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Quickly Evaluate Mailbox Usage in Exchange

By October 1, 2013September 9th, 2020Blog, Microsoft

There have been a few instances recently where I have been asked to evaluate the sizes of user’s mailboxes in Exchange. The best way I have found to do this in a sortable list is by running the following command in the Exchange Management Shell:

Get-MailboxStatistics -Database “Mailbox DB Name Here” | Select DisplayName, ItemCount, {$_.TotalItemSize.Value.ToMB()} | Sort-Object TotalItemSize -Descending | Export-CSV C:MBSizes.csv

This command will go out to your exchange datastore and create a CSV file with the following information:

  • User Display Name
  • Mailbox Item Count
  • Mailbox Size in MB.

The command runs very quickly and gives you a sortable list located at C:MBSizes.csv

Andy Shaffer, PEI

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