Context: A mailbox provider is an organization that provides services for hosting electronic mail domains with access to storage for mail boxes. It provides email servers to send, receive, accept, and store email for end users or other organizations.

Question: What is a mailbox provider? 
Answer: an organization that provides services for hosting electronic mail domains with access to storage for mail boxes

Question: What is an organization that provides hosting of electronic mail domains? 
Answer: A mailbox provider

Question: what is the purpose of a mailbox provider? 
Answer: It provides email servers to send, receive, accept, and store email

Question: how does a user store electronic mail?
Answer: A mailbox provider

Question: What is an Internet mail service provider?
Answer: Unanswerable

Question: What online service does not provide storage?
Answer: Unanswerable

Question: Who allows people to send but not accept in-store mail?
Answer: Unanswerable

Question: Who invented male domains?
Answer: Unanswerable