draftForward creates an unsent forward. You can omit recipients initially and
add them later with updateMessage.
automations/draft-outlook-forward.automation.ts
messageId is required. Optional comment is placed above the forwarded
message; optional to accepts one or more email strings or { address, name? }
objects. Optional account selects the binding. Returns the created normalized
draft. Pass its messageId to addAttachment, updateMessage, or sendDraft.