Count Mailboxes in Organization Unit

Introduction

This script will count Mailboxes in Organization Unit excluding its Child Organization Unit.

Scenarios

This script is to help Exchange Administrator to count Mailboxes in Organization Unit excluding its Child Organization Unit via PowerShell.

Script

This script contains one advanced function Count-OSCMailboxInOU, you can use this script in the following ways:

Step1: Run the script in the Exchange Management Shell, type the one command: Import-Module <Script Path> at the prompt.

For example, type Import-Module C:\Script\CountMailboxInOU.psm1

Here are some code snippets for your references.

if($checkou){
    #Count mailboxes
    $Count = $null
    $Count = Get-User -ResultSize Unlimited | Where{$_.OrganizationalUnit -like "*$ou" -and $_.RecipientType -eq "UserMailbox"} | Group-Object RecipientType | Select Count -ExpandProperty Count
    if($Count -eq $null){
        $Count = 0
    }
    Write-Host "Organization Unit $ou has $Count Mailboxes."
}

if($checkou){
    #Count mailboxes
    $Count = $null
    $Count = Get-User -ResultSize Unlimited | Where{$_.OrganizationalUnit -like "*$ou" -and $_.RecipientType -eq "UserMailbox"} | Group-Object RecipientType | Select Count -ExpandProperty Count
    if($Count -eq $null){
        $Count = 0
    }
    Write-Host "Organization Unit $ou has $Count Mailboxes."
}

Examples

Example 1: Count the Mailboxes in Organization Unit OU1 excluding its child OU.
Command: Count-OSCMailboxInOU -OrganizationUnit "OU1"
Screenshot:
 

Prerequisite

Exchange 2010 and above Exchange Version
English Version only
PowerShell 2.0

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