Update a draft

PATCH 
/inboxes/drafts/:draftId

Change any field; null clears it. A draft that is being sent can't be changed.

Request

Responses

200

The updated draft

400

Invalid request body, or no fields to change

403

Test-mode key, or missing scope

404

Draft not found

409

The draft is being sent

422

thread_id is not a thread in this project, or a reply draft would have to or subject