2010-11-16, 05:53 PM
POP and IMAP are email retrieval protocols. A client connects to a server and gets email from it. POP generall downloads the messages and removes them from the server. IMAP does not remove them from the server after the client downloads them.
SMTP is an email transfer protocol. It's used to send mail from a user program to their mail server or from a mail server to another mail server.
SMTP is an email transfer protocol. It's used to send mail from a user program to their mail server or from a mail server to another mail server.