微软的发送邮件的简单实现

<system.net>
<mailSettings>
<smtp deliveryMethod="Network" from="dongchao5525@126.com"  >
<network host="smtp.126.com" userName="dongchao5525" password="XXXXXX"/>
</smtp>
</mailSettings>
</system.net>

using (MailMessage mmConfig = new MailMessage())
{
mmConfig.To.Add("dongchao5525@163.com");
mmConfig.Subject = "123";
mmConfig.Body = "te";
using (SmtpClient mailClient = new SmtpClient())
{
mailClient.Send(mmConfig);
}
}