This script will show you how to add Target address to a list of users using PowerShell.
The script will run on Windows Server 2008 R2 and above with AD tools Installed.
Before you start create a text file called users and add the users samaccountname to it like the example below:
import-module activedirectory Get-Content C:\users.txt | % { set-aduser $_ -add @{targetAddress="smtp:[email protected]"}}