draftReply creates an unsent reply to the original sender. Use the returned
draft ID to add attachments or make further edits before sendDraft.
automations/draft-outlook-reply.automation.ts
messageId is required. Optional body adds content above the quoted message;
optional bodyType is text or html and defaults to text when a body is
present. Optional account selects the binding. Returns the created complete
OutlookMessage, normally with isDraft: true.