I am using the Graph API with app permission & with a certificate.
I know how to send emails with the sender which is different from the requestor's email.
I go to admin.exchange.com, select the user and add a mailbox delegation then add the user in "Send as". My question is how to add user with "Send As" option via Graph API only.
I would like use this method microsoft permission: but from graph api
Thanks for your help