Exchange online / Enable-Mailbox for OU EXCEPT Users who already have mailbox

[Squan_JRP]

At the beginning of year year I have to create mailboxes for any new students in a particular OU.

In the past I have accomplished this by using powershell like :

Get-User -OrganizationalUnit "domain.local/SchoolA/Users/Students/09" | Enable-Mailbox

The problem with this is, when users in that OU already have a mailbox it creates a problem and doesn't just error out on those users. It seems to create incorrect aliases for the new users and the existing users go back to being "User" mailboxes instead of being O365 mailboxes (we're running in a hybrid environment).

Is there a clean way with powershell to enable-mailbox on a whole OU but skip any accounts that already have a mailbox?

Any help would be appreciated.

[dapaulio]

Try adding between the ou switch and the pipe...

-recipienttypedetails user | enable-mailbox