Analysis of information sources in references of the Wikipedia article "Internet service provider" in English language version.
"Mailbox Provider" refers to an organization that accepts, stores, and offers access to RFC 5322 messages ("email messages") for end users. Such an organization has typically implemented SMTP RFC 5321 and might provide access to messages through IMAP RFC 3501, the Post Office Protocol (POP) RFC 1939, a proprietary interface designed for HTTP RFC 7230, or a proprietary protocol.
"Mailbox Provider" refers to an organization that accepts, stores, and offers access to RFC 5322 messages ("email messages") for end users. Such an organization has typically implemented SMTP RFC 5321 and might provide access to messages through IMAP RFC 3501, the Post Office Protocol (POP) RFC 1939, a proprietary interface designed for HTTP RFC 7230, or a proprietary protocol.