public void MailSend(string email)

  {

    　MailMessage MyMail = new MailMessage();

      MyMail.From = new MailAddress("服务端邮箱地址", "展示名称，也可以为空");

      MyMail.To.Add(new MailAddress(email));//emial 客户端邮箱地址

      MyMail.Subject = "check";//邮件标题

      StringBuilder contentBuilder = new StringBuilder();

      contentBuilder.Append("请单击以下链接完成激活");

      contentBuilder.Append("<a href='http://localhost:4064/Account2/repassword?email="+email+"'>激活</a>");

      MyMail.Body = contentBuilder.ToString();

      MyMail.IsBodyHtml = true;

      SmtpClient smtpclient = new SmtpClient();

     //发件邮箱和密码 ,注意这里要与发件人地址的邮箱一致

      smtpclient.Credentials = new System.Net.NetworkCredential("服务端邮箱地址", "邮箱地址的密码");

      smtpclient.DeliveryMethod = SmtpDeliveryMethod.Network;

      smtpclient.Host = "smtp.ym.163.com";//企业邮箱的站点，不同邮箱这个位置不同

      smtpclient.EnableSsl = true;

      smtpclient.Send(MyMail);

   }