How to send email in ASP.NET with SMTP authentication

C# Code Sample

<%@ Import Namespace="System.Net" %>
<%@ Import Namespace="System.Net.Mail" %>

<script language="C#" runat="server">

   protected void Page_Load(object sender, EventArgs e)
        {
            MailMessage mail = new MailMessage();

            mail.From = new MailAddress ( "postmaster@YourHostedDomain.com" );
            mail.Subject = "This is a test message" ;
            mail.Body = "If you can see this mail, your SMTP service is working" ;
            mail.To.Add( "recipient@somewhere.com" );
            SmtpClient smtp = new SmtpClient( "[Mail Server name]" );

            NetworkCredential credential = new NetworkCredential ("postmaster@YourHostedDomain.com" , "password");
            smtp.Credentials = credential;
            smtp.Send(mail);
            Response.Write( "Message was sent to " + mail.To + " at " + DateTime .Now);
        }
</script>