Hello! I need to give permission to user1 access user2 mailbox, but read- only. Have a shell command to do that? In Microsoft Outlook i can give the especific permission (Read Only) and the other "MS Outlook" user can view the mailbox, and cannot delete. But this users cannot open the mailbox in the OWA. I need user1 viewing the mailbox of user2, cannot delete, and using webaccess. I'd tried Add-MailboxPermission, Add-AdPermission, Google, and a lot of resources... and find nothing! Any suggestions are appreciated ! Matheus Cavalieri