Do mailbox permissions (like FullAccess, SendAs and folder permissions) migrate during a tenant to tenant mailbox migration?

Yes! … … Okay, there’s a bit more to it than that. According to Microsoft’s documentation, you can expect permissions applied to a mailbox to migrate when you use the Microsoft’s MRS-based tenant to tenant migration service. As mentioned in the title, this includes FullAccess permissions, SendAs and folder permissions. Notably, Send on Behalf permissions Continue reading Do mailbox permissions…