I'm new to MiAB and it was so great. However I keep on looking and searching on the list but I haven't found any answer. This is my question: In office 365 when we need to have one user to grant send as permission to one or multiple user.
In Office365 via powershell we just need to type this: "Add-RecipientPermission email@example.com -AccessRights SendAs -Trustee firstname.lastname@example.org"
In Mail in A Box, how can we do that?