Can I do this with a piped command or do I need a script? This is what I am thinking: Get-MailBox | Where { $_.EmailAddressPolicyEnabled -eq $false } | Set-Mailbox -EmailAddresses @{Add=%g.%s'@domain.local'} But apparently powershell doesn't go for %g%s and if i put it in quotes, it interprets it literally. Thanks!

Hi Mloradites, I tested on my lab, maybe you can follow these steps to add additional email address: $user = Get-Mailbox -Identity "user@domain.com" $user.emailaddresses.Add('testdoim1@yahoo.com') $user | Set-Mailbox Here are some similar threads, hope can give you some help: Powershell Add Secondary SMTP Address in bulk for Exchange Server 2010 SP1 http://social.technet.microsoft.com/Forums/en-US/exchangesvradmin/thread/4dab79d2-9e66-49ab-824c-1999c08d805f/ Adding new mail Adresses to a mail account http://social.technet.microsoft.com/Forums/en-US/exchangesvradmin/thread/832be0e4-c6e9-489c-b820-c060c80ab907 Thanks, Evan Liu TechNet Subscriber Support in forum If you have any feedback on our support, please contacttngfb@microsoft.com Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.