Hi, Below code can explain.
private void SendMail()
{
MailMessage mailMessage = new MailMessage();
SmtpClient smtpClient = new SmtpClient("smtp.gmail.com", 587);
smtpClient.Credentials = new NetworkCredential("your gmail email ID", "password");
smtpClient.EnableSsl = true;
smtpClient.Send("from mail ID", "to mail ID", "subject", "message");
}
Regards, Krishnakant