updateMailDraftBody

Mutation

Update only the body content of a mail draft, preserving all other fields like attachments. hive-collab-server calls this when persisting collaborative mail draft edits. The HTML body is stored exactly as given (links are not rewritten); on a reply draft the quoted thread is re-attached below it. Never sends.

Access: Requires authenticated user with connected mail provider.

Errors:

• User is not logged in
• User does not have specified providerId connected
• Unsupported mail provider

Returns MailMessage .