Finaly i solve it here is the code it works perfectly
MailMessage EmailMsg = new MailMessage();
EmailMsg.From = new MailAddress("fromMaill@emall.mk", "Системска порака :: еMall.mk");
EmailMsg.To.Add(new MailAddress(toMail@emall.mk, "Заборавена лозинка - Безбедносен код"));
EmailMsg.Subject = "Заборавена лозинка - Безбедносен код";
EmailMsg.Body = BODY;
EmailMsg.IsBodyHtml = true;
EmailMsg.Priority = MailPriority.Normal;
SmtpClient MailClient = new SmtpClient("mail.yourhostdomail.com");
MailClient.Credentials = new System.Net.NetworkCredential("emailaddress", "Passworofmail");
MailClient.Send(EmailMsg);