Outlook REST API Get MIME content of ItemAttachment with ReadItem permission
问题 The Outlook REST API we are trying to use is outlook.office.com/api/v2.0/me/messages{messageId}/attachments/{attachmentId}/$value to retrieve the raw contents of an ItemAttachment (contact, event, or message) in MIME format as described here https://docs.microsoft.com/en-us/graph/outlook-get-mime-message. Getting the MIME contents only works with the ReadWriteMailbox permission, but we would like it to work with ReadItem. We are able to retrieve FileAttachments without the elevated permission