Hello Rajesh,

Use this class, to send email using ASP.Net.

public class EmailClass
{
   public static string SendEmail ( string from, string name, string emailIdTo, string subject, string body )
   {
     SmtpClient smtpClient = new SmtpClient ();
     MailMessage mailMessage = new MailMessage ();
     MailAddress mailAddress = new MailAddress ( from, name );
     smtpClient.Host = "localhost";
     smtpClient.Port = 25;
     mailMessage.From = mailAddress;
     mailMessage.To.Add ( emailIdTo );
     mailMessage.Subject = subject;
     mailMessage.IsBodyHtml = false;
     mailMessage.Body = body;
     smtpClient.Send ( mailMessage ); 
     return "Successfully Mail Sent";
   }
}