Email Service is a very broad application as the most widely used service items on the Internet, which also plays a very important role in web applications. As with other network services, email systems also have their transport protocols, including SMTP (Simple Mail Transfer Protocol, Simple Mail Transfer Protocol, POP (Post Office Protocol, Post Office Agreement), and IMAP (Internet Message Access Protocal, Message Access Protocol These protocols apply to email transmission and reception. Some email processing software such as Outlook Express and Foxmail are designed by SMTP and POP3 protocols to send and receive emails. This article uses the SMTP protocol as a research object, and in the Visual C 6.0 programming environment, in accordance with the SMTP protocol, send SMTP commands to the SMTP command, receive and process feedback from the mail server, thereby implementing the email.
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VC SMTP protocol email transfer
