用于实验的邮件客户端。用于1.理解收发电子邮件服务器和客户端的交互过程。 2.理解SMTP协议和POP3协议的原理，了解SMTP协议和POP3协议的内容。 理解发送和接收电子邮件的过程，邮件服务器和客户端的 -for experimental mail client. For one. Understanding e-mail server and client interaction process. 2. Understand SMTP and POP3 protocol agr

KLMail收邮件 用pop3收邮件。用到socket/base64+pq解码/内码转换/多线程等技术。核心用SDK方式写，界面交互用MFC。-KLMail received pop3 mail received by mail. Pq used socket/base64 decoder / code conversion / multithreading technology. Core SDK used to write, interactive interface with MFC.