Hello everyone, Can anyone help me out in granting full access permissions on all the user mail boxes for a service account? I did find the cmdlet Add-MailboxPermission, but I need to grant to a huge number of mail boxes. -Sai

I found an answer for this.Get-MailboxDatabase | Add-ADPermission -user <<appuser>> -accessRights GenericAll

You can run this command Get-Mailbox -ResultSize unlimited |Add-MailboxPermission -AccessRights fullaccess -User <<serviceaccount>> this will grant the service account fullmailbox access on current mailboxes, when you create more mailboxes you must run this command again so its not the ideal solution