发送邮件－成功

using System;
using System.Text;
using System.Net.Mail;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace Discuz.Web.tools
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Button1_Click(object sender, EventArgs e)
        {
            SmtpClient _smtpClient = new SmtpClient();
            _smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;//指定电子邮件发送方式
            _smtpClient.Host = "mail.gzmsg.com";//指定SMTP服务器
            _smtpClient.Credentials = new System.Net.NetworkCredential("yxx@gzmsg.com", "yangxiuxu");//用户名和密码

            MailAddress _from = new MailAddress("yxx@gzmsg.com", "杨秀徐");
            MailAddress _to = new MailAddress("471812366@qq.com");
            MailMessage _mailMessage = new MailMessage(_from, _to);
            _mailMessage.Subject = "主题";//主题
            _mailMessage.Body = "内容";//内容
            _mailMessage.BodyEncoding = System.Text.Encoding.Default;//正文编码
            _mailMessage.IsBodyHtml = true;//设置为HTML格式
            _mailMessage.Priority = MailPriority.Normal;//优先级

            try
            {
                _smtpClient.Send(_mailMessage);
                Response.Write("<script>alert(‘发送成功啦‘)</script>");
            }
            catch (System.Net.Mail.SmtpException ex)
            {
                Response.Write("<script>alert(‘发送失败啦‘)</script>");
            }
        }
    }
}

发送邮件－成功

原文：http://www.cnblogs.com/sntetwt/p/4523507.html