Manage Email Destinations

CRD documents email-destination operations for single-report schedules. These calls change schedule delivery settings; verify the target schedule and destination before updating.

• POST /api/SingleSchedule/AddEmailDestination adds a destination. The optional clearExisting query parameter controls whether existing email destinations are cleared first; its documented default is false.
• PUT /api/SingleSchedule/UpdateEmailDestination updates a destination.
• DELETE /api/SingleSchedule/DeleteEmailDestination?destinationId={id} deletes a destination.

Add and update requests use EmailDestinationModel. Use exact fields from the API Reference; preserve destination identifiers returned by CRD. No recipient payload is invented here.