，下载jmail组件，可以直接安装；也可以找到jmail.dll，手动注册组件。命令行环境下，到jmail.dll所在目录，运行regsvr32 jmail.dll，C＃程序中，行首加上using jmail,如下：(点击btnSend按钮后发送邮件)

-, Download jmail components can be installed directly　also be found jmail.dll, manually register the component. Command-line environment, to the jmail.dll directory, run regsvr32 jmail.dll, C# program, the line coupled with using jmail, as follows: (click btnSend button to send mail)