/// <summary>
    /// NetMail方式測試通過
    /// </summary>
    private void TestSend()
    {
        System.Net.Mail.MailMessage mm = new System.Net.Mail.MailMessage();
        //收件人地址
        mm.To.Add(new System.Net.Mail.MailAddress("xxxxxx@163.com", "Name"));
        //發件人地址
        mm.From = new System.Net.Mail.MailAddress("xxxxx@sina.com");
        //這個可以不指定
        //mm.Sender = new System.Net.Mail.MailAddress("xxx@sina.com", "SenderName");、

        mm.Subject = "This is Test Email";
        mm.Body = "<h3>This is Testing SMTP Mail Send By Me</h3>";
        mm.IsBodyHtml = true;
        mm.Priority = System.Net.Mail.MailPriority.High; // 設置發送郵件的優先級
        System.Net.Mail.SmtpClient smtCliend = new System.Net.Mail.SmtpClient();
        //指定郵件服務器
        smtCliend.Host = "smtp.sina.com";
        //smtp郵件服務器的端口號 
        smtCliend.Port = 25;  
        //設置發件人郵箱的用戶名和地址，使用公共郵件服務器一般需要提供，不然發送不會成功
        smtCliend.Credentials = new NetworkCredential("xxxxxxx", "xxxxxxx");

        //指定郵件的發送方式
        smtCliend.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;
        try
        {
            smtCliend.Send(mm);
        }
        catch (System.Net.Mail.SmtpException ex)
        {
            Response.Write(ex.Message);
        }
        catch (Exception ex)
        {
            Response.Write(ex.Message);
        }
    }