C#發送mail
MailMessage mail = new MailMessage();
mail.From= new MailAddress(ConfigurationSettings.AppSettings["MailFrom"]);
mail.To.Add(ConfigurationSettings.AppSettings["MailTo"]);
mail.Subject = "MailService Count over Setting";
mail.IsBodyHtml = true;//有無html格式
mail.Body = Body;
SmtpClient smtpclient = new SmtpClient();
smtpclient.Host = ConfigurationSettings.AppSettings["MailServer"];//設定SMTP Server
smtpclient.Send(mail);