SmtpClient clientObj = new SmtpClient();
clientObj.Host = "mail.myisp.net";
clientObj.Send ("from@mydomain.com", "to@adomain.com", "subjecttext", "bodytext");

SmtpClient clientObj = new SmtpClient();
clientObj.Host = "mail.myisp.net";
MailMessage mmObj = new MailMessage();
mmObj.Sender = new MailAddress ("kay@domain.com", "Kay");
mmObj.From = new MailAddress ("kay@domain.com", "Kay");
mmObj.To.Add (new MailAddress ("bob@domain.com", "Bob"));
mmObj.CC.Add (new MailAddress ("dan@domain.com", "Dan"));
mmObj.Subject = "Hello!";
mmObj.Body = "Hi. Here"s my photo!";
mmObj.IsBodyHtml = false;
mmObj.Priority = MailPriority.High;
Attachment a = new Attachment ("photoofme.jpg",
System.Net.Mime.MediaTypeNames.Image.Jpeg);
mmObj.Attachments.Add (a);
clientObj.Send (mmObj);