Try This..
protected void SendMail()
{
var fromAddress = "Gmail@gmail.com";
var toAddress = YourEmail.Text.ToString();
const string fromPassword = "Password";
string subject = YourSubject.Text.ToString();
string body = "From: " + YourName.Text + "\n";
body += "Email: " + YourEmail.Text + "\n";
body += "Subject: " + YourSubject.Text + "\n";
body += "Question: \n" + Comments.Text + "\n";
var smtp = new System.Net.Mail.SmtpClient();
{
smtp.Host = "smtp.gmail.com";
smtp.Port = 587;
smtp.EnableSsl = true;
smtp.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;
smtp.Credentials = new NetworkCredential(fromAddress, fromPassword);
smtp.Timeout = 20000;
}
smtp.Send(fromAddress, toAddress, subject, body);
}
protected void Button1_Click(object sender, EventArgs e)
{
try
{
SendMail();
DisplayMessage.Text = "Your Comments after sending the mail";
DisplayMessage.Visible = true;
YourSubject.Text = "";
YourEmail.Text = "";
YourName.Text = "";
Comments.Text = "";
}
catch (Exception) { }
}