Ensure the one Mailgun receiving route for a sending domain: every message to any address on it is forwarded to the https url (and to forward_to when given), stored, and stops there. Made once, then updated in place (found by its description); a route datagate did not make is never changed, and one that already receives the domain is a refused miss. The domain must be the credential's own or on the calling key's allow-list.
Price: $0.00 per unit.
Maximum charge per unit: $0.00.