using (MailMessage mail = new MailMessage())
        {
            mail.From = new MailAddress("xxx@gmail.com");
            mail.To.Add("xxx@gmail.com");
            mail.Subject = "Julio olha isso 5";
            mail.Body = @"<script>SCRIPT aqui.</script>";
            mail.IsBodyHtml = true;

            using (SmtpClient smtp = new SmtpClient("smtp.gmail.com", 587))
            {
                smtp.Credentials = new NetworkCredential("xxx@gmail.com", "xxx");
                smtp.EnableSsl = true;
                smtp.Send(mail);
            }
        }