public bool Send(string to, string from, string subject, string message)

         {

              try

              {

                   MailMessage em = new MailMessage();

                   em.To = to;

                   em.From = from;

                   em.Subject = subject;

                   em.Body = message;

                   //Found out how to send authenticated email via System.Web.Mail at http://SystemWebMail.com (fact 3.8)

                   if(this.UserName != null && this.Password != null)

                   {

                       em.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", "1");   //basic authentication

                       em.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", this.UserName); //set your username here

                       em.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", this.Password); //set your password here

                   }

                   SmtpMail.SmtpServer = this.SmtpServer;

                   SmtpMail.Send(em);

                   return true;

              }

              catch

              {

                   return false;

              }

          }

     }

}