public static void SendEmail(List <string> toAddresses, List <string> bccAddresses, string subject, string body)
        {
            MailAddress fromMailAddress = new MailAddress(GlobalConfig.LookupAppConfigKey("senderEmail"), GlobalConfig.LookupAppConfigKey("senderDisplayName"));

            MailMessage mail = new MailMessage();

            toAddresses.ForEach(a => mail.To.Add(a));
            bccAddresses.ForEach(bcc => mail.Bcc.Add(bcc));
            mail.From       = fromMailAddress;
            mail.Subject    = subject;
            mail.Body       = body;
            mail.IsBodyHtml = true;

            SmtpClient client = new SmtpClient();

            client.Send(mail);
        }