Allow to upload (POST) with a new Mail Message with MIME Content
As the Graph API now allows clients to retrieve the MIME content of an Email Message, it would be great if a new mail instance can be created using MIME instead of assigning individual properties i.e the Create Message endpoint should have support for uploading MIME Content.
Rafael Masson commented
It should also be possible to create a new *non-draft* message like the APPEND command does in IMAP. I opened a specific feature request for this: https://microsoftgraph.uservoice.com/forums/920506-microsoft-graph-feature-requests/suggestions/39296704-create-a-non-draft-message-via-mime-content-lik
Graph API for email should support uploading of email MIME.