In my organization we are authorized to use Graph API to send and receive emails programmatically through Shared Mailboxes hosted in Exchange Online. I have a new requirement for a custom application to send emails that cannot be forwarded to anyone else. This is similar to Outlook's Do not Forward permission settings. Is there any way we can achieve this using Graph API?
I tried looking into sensitivityLabels but that isn't available in the Microsoft.Graph or Microsoft Graph Beta libraries. I understand that in Graph API framework the encryption is not available.
I see a duplicate question in SO but that one still doesn't have any response Can we set "Do Not Forward" permission to an email sent programmatically?