本程序实现对主机电子邮件协议的监控与截获。如利用foxmail和outlook发送的电子邮件。Socket编程，base64码变换。-The program realization of the host monitor and intercept e-mail protocol. Such as the use foxmail and outlook email. Socket programming, base64 code transformation.

VB制作的发送邮件的上位机软件，里面用的知识点非常的多，非常适合大家来学习-VB produced by the host computer to send e-mail software, which use the knowledge is very much, very much for everyone to learn