C# Mails

 void SendEmail(string email, string filepath)
    {

        string strPattern = "^([0-9a-zA-Z]([-.\\w]*[0-9a-zA-Z])*@([0-9a-zA-Z][-\\w]*[0-9a-zA-Z]\\.)+[a-zA-Z]{2,9})$";

        if (System.Text.RegularExpressions.Regex.IsMatch(email, strPattern))
        {
            string address = "[email protected]";
            string addresses = email + "," + address;
            string host = "mail.dhameshsharma.com";
            string user = "[email protected]";
            string pass = "abcd";
            MailMessage message = new MailMessage();
            message.From = new MailAddress(address);
            message.To.Add(addresses);
            message.IsBodyHtml = true;
            message.Body = "Thank you for signing up to the ABCD, your invoice is attached";
            message.Subject = "Invocie : ABCD Network";
            Attachment inv = new Attachment(filepath);
            message.Attachments.Add(inv);
            GetSmtpClient(host, 0x19, user, pass, true).Send(message);
        }

    }
private static SmtpClient GetSmtpClient(string host, int port, string user, string password, bool enableSsl)
    {

        SmtpClient client = new SmtpClient();
        client.Host = host;
        client.Port = port;
        NetworkCredential credential = new NetworkCredential(user, password);
        client.DeliveryMethod = SmtpDeliveryMethod.Network;
        client.UseDefaultCredentials = false;
        //client.Timeout = 0x1388;
        client.Timeout = 99999;
        client.Credentials = credential;
        return client;

    }

Thanks