Sending dynamic email from Webmails

Code bellow shows how to send emails from asp.net c#  from web servers .

 public void SendMail()
    {

        MailMessage mm = new MailMessage("from id ", "toid");
       //(2) Assign the MailMessage's properties
         mm.Subject = "sub";
         mm.Body = "message";
         mm.IsBodyHtml =true;
        //(3) Create the SmtpClient object
        //'Dim smtp As New SmtpClient
       SmtpClient  smtp = new SmtpClient("webmail.domain");
        //'(4) Send the MailMessage (will use the Web.config settings)
       smtp.Send(mm);
     }