摘要： 主要要注意的是smtp认证的问题。代码很简单，如下：调用代码：namespace EmailTest{ class Program { static void Main(string[] args) { try { SMTPEmailSender sender = new SMTPEmailSender("mail.longdayinfo.com", "upcodechina@longdayinfo.com", "12345"); sender.From = "upcodechina@longdayinfo.com" 阅读全文