C# 메일전송 참조

public static void FileMailSend(string filePath, string msg)
        {
            MailMessage mail = new MailMessage();


            //보내는 사람 이메일
            mail.From = new MailAddress("impelhaihm@gmail.com");
            
            //반는사람 이메일
            mail.To.Add("ToMailAdress");
            //메일제목
            mail.Subject = "SpcAutoDrafts Error";
            //메일내용
            mail.Body = msg;

            //첨부파일
            System.Net.Mail.Attachment attachment;

            //첨부파일 붙이기
            attachment = new System.Net.Mail.Attachment(filePath);
            mail.Attachments.Add(attachment);

            //gmail 포트 설정
            SmtpClient smtp = new SmtpClient("smtp.gmail.com", 587);
            
            //SSL 설정 (gmail 은 ture로 설정, 메일 서버 세팅에 따라 다름)
            smtp.EnableSsl = true;

            //gamil 인증을 위한 id/pw (보내는사람 정보 넣기)
            smtp.Credentials = new NetworkCredential(" Email Adress ", " passworld ");
            try
            {
                smtp.Send(mail);
                

            }catch
            {
                MessageBox.Show("메일발송실패");
            }

        }