一个.NET发邮件的简单例子

using System.Web.Mail;

    MailMessage msgMail = new MailMessage(); 
  
    msgMail.To=Tsendto.Text.Trim();

     msgMail.Cc = "webmaster@aspcool.com";

    msgMail.From = Tsendfrom.Text.Trim();
    msgMail.Subject = "Congraculations!"; 
    msgMail.Priority = MailPriority.High;
    msgMail.BodyFormat = MailFormat.Html; //加这一句，可以发html邮件
    string strBody =Tcontext.Text.Trim(); 
         msgMail.Body = strBody；

msgMail.Attachments.Add(new MailAttachment("e://aaa.jpg")); 
    SmtpMail.SmtpServer = "mail.zhhz.org";

 msgMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", "1"); //basic authentication
       msgMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", "my_username_here"); //set your username here
      msgMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", "super_secret"); //set your password here

    SmtpMail.Send(msgMail);
     Response.Write("<script>alert('发送成功')</"+ "script>");