Getting Outlook folder item count Office365

This topic contains 2 replies, has 2 voices, and was last updated by  Gary Pietila 4 years, 4 months ago.

  • Author
  • #11008

    Gary Pietila


    Looking for a way to get a count of individual Outlook folder items (emails)

    We are migrating from on-premise Exchange 2010 to Office365, looking for a way to get a count of emails in each folder/subfolder on each side so we can verify that the migration moved all the emails.

    I am sure there must be some way to do this in Powershell.

  • #11018

    Don Jones

    The PowerShell components of Exchange – either on-premises or hosted – aren't amazing at "cracking open" a mailbox to get at its contents. Do you have a way of doing this against your local Exchange server by using PowerShell?

  • #11029

    Gary Pietila

    Hi Don, Thanks for responding.

    I was able to find this script which works on a on premises Exchange, have not had a chance to test it against Office365 yet since I am fighting a number of "fires" today (I believe this is from Shay Levy):

    function Get-MailboxFolder($folder)
    "{0}: {1}" -f $, $folder.items.count

    foreach ($f in $folder.folders)
    Get-MailboxFolder $f

    $ol = new-object -com Outlook.Application
    $ns = $ol.GetNamespace("MAPI")
    $mailbox = $ns.stores | where {$_.ExchangeStoreType -eq 0}
    $mailbox.GetRootFolder().folders | foreach { Get-MailboxFolder $_}

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