Envio de email con .net desde Gmail

System.Net.Mail.MailMessage msgEmail = new System.Net.Mail.MailMessage();
msgEmail.To.Add("destino@dominio.com");
msgEmail.From = new MailAddress("tucuenta@gmail.com", "", System.Text.Encoding.UTF8);
msgEmail.Subject = "Envio desde GMail";
msgEmail.SubjectEncoding = System.Text.Encoding.UTF8;
msgEmail.Body = "Prueba de envio";
msgEmail.BodyEncoding = System.Text.Encoding.UTF8;
msgEmail.IsBodyHtml = false;

SmtpClient oClient = new SmtpClient();
oClient.Credentials = new System.Net.NetworkCredential("tucuenta@gmail.com", "tuclave");
oClient.Port = 587;
oClient.Host = "smtp.gmail.com";
oClient.EnableSsl = true;
oClient.Send(msg);