C# 發送EMAIL

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透過C#發送MAIL,並且將發送的MAIL備份在指定的Folder底下

//寄出去的MAIL備份在C槽底下
string MailPath = "C:" + Path.DirectorySeparatorChar.ToString() + "DemoSendMail" + Path.DirectorySeparatorChar.ToString() + DateTime.Now.ToString("yyyyMMdd") + Path.DirectorySeparatorChar.ToString();
if (!Directory.Exists(MailPath))
{
	Directory.CreateDirectory(MailPath);
}
//發送MAIL的時候寫一筆Log檔
string LogFile = MailPath + Path.DirectorySeparatorChar.ToString() + DateTime.Now.ToString("yyyyMMdd") + ".txt";
StreamWriter sw = new StreamWriter(LogFile, true);

try
{
	MailMessage msg = new MailMessage();
	msg.To.Add("");//收件者的EMail,多個收件者用逗號隔開
	msg.From = new MailAddress("寄件者的MAIL", "寄件者名稱", System.Text.Encoding.UTF8);
	msg.Subject = "Demo Send Mail" + DateTime.Now.ToString("yyyyMMdd HH:mm:ss");
	msg.IsBodyHtml = false;
	msg.BodyEncoding = Encoding.UTF8;
	msg.Body = "Demo Send Mail Content";

	String SMTP = "smtp.gmail.com"; // 測試的時候用Gmail測試
	int Port = 587; //25 or 587 
	String UserName = "寄件者帳號"; //
	String PassWord = "寄件者密碼"; //

	//建立 SmtpClient 物件 並設定 Gmail的smtp主機及Port
	SmtpClient MySmtp = new SmtpClient(SMTP, Port);

	//設定你的帳號密碼
	MySmtp.Credentials = new System.Net.NetworkCredential(UserName, PassWord);
	//Gmial 的 smtp 使用 SSL
	MySmtp.EnableSsl = true;
	//發送Email
	MySmtp.Send(msg);


	//oStemp (mail)放在本機; 
	SmtpClient oStemp = new SmtpClient(SMTP);
	oStemp.UseDefaultCredentials = false;
	//電子郵件會複製到 System.Net.Mail.SmtpClient.PickupDirectoryLocation 屬性所指定的目錄中,
	oStemp.DeliveryMethod = SmtpDeliveryMethod.SpecifiedPickupDirectory;
	//設定要備份的Folder路徑
	oStemp.PickupDirectoryLocation = MailPath;
	oStemp.Send(msg);
	
}
catch (Exception ex)
{
	MessageBox.Show("Error:" + ex.Message);
	sw.WriteLine(DateTime.Now.ToString("yyyyMMdd HH:mm:ss") + " Error:" + ex.Message);
}