Overall, good idea for a service. My criticism/questions: - Price is way off: $10-100 CPM for simple message delivery? Does it come with delivery guarantees/r

Overall, good idea for a service. My criticism/questions: - Price is way off: $10-100 CPM for simple message delivery? Does it come with delivery guarantees/retries? In fairness: What's the use case with which you would justify this pricing? - (How) Do you ensure that email sent via your service is not marked as spam? Reliable mass email delivery is hard these days.