EMail Protocols CS328 Dick Steflik. eMail SMTP - Simple Mail Transport Protocol – rfc: 821 – Port: 25 (u) ; 465 (s) POP - Post Office Protocol – rfc:
Sending and Receiving Mails. SMTP (Simple Mail Transfer Protocol) POP3 (Post Office Protocol version 3) IMAP4 (Internet Message Access Protocol version.
eMail Protocols