private void BuildMail()
        {
            mail = new Mail {
                Supplier      = supplier,
                Subject       = "Тестовое сообщение",
                Body          = "Привет,\r\nЭто тестовое сообщение",
                LogTime       = DateTime.Now,
                SupplierEmail = "*****@*****.**"
            };
            mail.AddRecipient(client);

            log = new MailSendLog {
                User = user, Mail = mail, Recipient = mail.Recipients[0]
            };

            session.Save(mail);
            session.Save(log);
        }