可以完成简单的邮件接受和发送，支持SMPT格式的邮件，本例分为客户端和服务端，可以很好的解决不同主机间的邮件接收与发送问题-Can complete a simple e-mail to receive and send e-mail support SMPT format, in this case is divided into client and server, can solve the different hosts receiving and sending e-mail prob