Mail sending code

hi
try this
 string senderEmailId = "[email protected]";
                string SenderContactName = "Ravi";
                string senderPassword = "password";
                string Subject = "CreditInvoice";
                string Body = "Find Enclosed Attachment File";

                if ((Subject.ToString().Trim() == string.Empty) ||
                    (Body.ToString().Trim() == string.Empty))
                {
                    return "Email Subject or Email Body is blank";
                }

                System.Net.Mail.MailMessage msg = new System.Net.Mail.MailMessage();
                // sender name and email id
                msg.From = new System.Net.Mail.MailAddress(senderEmailId, SenderContactName);

                // Receiver email id
                msg.To.Add(new System.Net.Mail.MailAddress("[email protected]"));

                msg.Subject = Subject;
                msg.Priority = System.Net.Mail.MailPriority.High;
                msg.IsBodyHtml = true;

                msg.Body = Body;
                System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient("smtp.gmail.com");
                client.Credentials = new NetworkCredential(senderEmailId, senderPassword);
                client.EnableSsl = true;
                client.Send(msg);

                return "Success";