text: Sending e-mails in the .NET Framework 2.0 is about the same as in
  version 1.x. There are just a couple of variations. First, all the
  functionality is within the new
  System.Net.Mail namespace. The
  System.Web.Mail namespace, wich was used in the 1.x frameworks is now considered obsolete.
  Lets get right to the code. It's really straight forward and self explanatory:
  MailMessage oMsg = new MailMessage();
  // Set the message sender
  oMsg.From = new MailAddress("xavier@devel.oping.net", "Xavier Larrea");
  // The .To property is a generic collection,
  // so we can add as many recipients as we like.
  oMsg.To.Add(new MailAddress("fox@foxcorp.org","John Doe"));
  // Set the content
  oMsg.Subject = "My First .NET email";
  oMsg.Body = "Test body - .NET Rocks!";
  oMsg.IsBodyHtml = true;
  SmtpClient oSmtp = new SmtpClient("smtp.myserver.com");
  //You can choose several delivery methods.
  //Here we will use direct network delivery.
  oSmtp.DeliveryMethod = SmtpDeliveryMethod.Network;
  //Some SMTP server will require that you first
  //authenticate against the server.
  NetworkCredential oCredential = new NetworkCredential("myusername","mypassword");
  oSmtp.UseDefaultCredentials = false;
  oSmtp.Credentials = oCredential;
  //Let's send it already
  oSmtp.Send(oMsg);
  Very easy, right? Remember always to use the
  Try-Catch
  block when sending emails because lot of things can cause an exception:
  bad email addresses, authentication errors, network failure, etc.
  I hope you find this code useful. Happy coding!