New SEND-MAIL Function

protected void Button1_Click(object sender, EventArgs e)
{
try
{
MailMessage message = new MailMessage();

SmtpClient mailClient = new SmtpClient();

MailAddress frm = new MailAddress(txtmailfrom.Text);

message.To.Add(txtmailto.Text);

message.Subject = txtsubject.Text;

String bodyText = "";

bodyText = " ";
bodyText = bodyText + "Dear" + " " + "firstname" + " " + "lastname" + ",";
bodyText = bodyText + "
";
bodyText = bodyText + "
";
bodyText = bodyText + "Administrator has sent reply on your Registration:";
bodyText = bodyText + " " + "" + txtsubject.Text + "";
bodyText = bodyText + "
";
bodyText = bodyText + "RegistrationDate:";
bodyText = bodyText + " " + "" + DateTime.Now.ToString() + "";
bodyText = bodyText + "
";
bodyText = bodyText + "If you have any queries or want to send nominations, please mail the same to
href='mailto:YOURADMNEMAILID'>YOURADMNEMAILID " + "
";
bodyText = bodyText + "
";
bodyText = bodyText + "All the best!!";
bodyText = bodyText + "
";
bodyText = bodyText + "
";
bodyText = bodyText + "Regards,";
bodyText = bodyText + "
";

bodyText = bodyText + "WEBSITE";
bodyText = bodyText + "";

message.Body = bodyText.ToString();

message.IsBodyHtml = true;

message.Priority = MailPriority.High;

NetworkCredential basicAuthenticationInfo = new NetworkCredential(@"YOURGMAILID", "G-MAIL PWD");

mailClient.Host = "smtp.gmail.com";

mailClient.Port = 587;

mailClient.DeliveryMethod = SmtpDeliveryMethod.Network;

mailClient.UseDefaultCredentials = false;

mailClient.EnableSsl = true;

mailClient.Credentials = basicAuthenticationInfo;

message.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure;

//mailClient.Timeout = 60000;

mailClient.Send(message);

lbl_success.Text = "Successsssss";

}
catch(Exception ex)
{
lbl_success.Text = "faillllll.";
}

}