put https://api2.frontapp.com/channels//conversations//messages//status
Update the status of an outbound message by external ID. This endpoint is used by external systems (like SMS providers or custom channels) to notify Front when a message's delivery status has changed.
Available status changes:
failed: Mark a message as failed. When marked as failed, the conversation is reopened so the team can take action.
Note: This endpoint is only available for outbound messages.