本程序运行后需要配置pop3服务器信息，通过基本的windows窗口实现功能。-after the procedures need pop3 server configuration information, through basic windows functions to achieve the window.

邮件发送工具窗口,代码写不好，希望各位大侠们的能帮忙完善下。-Mail tool windows, code writing is not good, hope you can help improve our heroes next.