Good question, we have the export functionality so people can move off easily, but I did not take into account a way to contact domain owners to let them know if we are turning off the server. We have enough AWS credits to run gateway for free (to us) for ~20 months as-is, but I suppose we should make a clearly documented plan for sunsetting the service if we ever decide to do that. Great point, and is something I will mull on.