Get Exchange online public mailbox owner via Microsoft Graph API

Question

Hello,

I'm using Microsoft Graph API for retrieving kinds of info from office365 for audit purpose.
The current task is get received mailbox usage of certain mailboxes which is Plan2,
by using below API successfully:

GET https://graph.microsoft.com/v1.0/users/$user.UPN/messages/

but, we need more info about those public mailboxes, like who is the Owner of this certain public Exchange Online Plan2 mailbox.

Could I get it from the Microsoft Graph API as well?

Answer 1

• If you want to query Exchange mailbox, its attributes related info then you can use Exchange Powershell to query. Here's the documentation. In case if you want to add the folder level permissions for users in mailboxes then you can use Exchange Powershell and Add-MailboxFolderPermission
  cmdlet. Here's the documentation.
• If you want to get the mailbox usage then you can Microsoft Graph API reports. Here's the documentation.