C#发送邮件简单例子

            try
            {
                SmtpClient smtp = new SmtpClient();
                MailMessage mm = new MailMessage();
                smtp.Host = "smtp.qq.com";//这里填你自己用的邮箱的 服务器。163的就是这个。 qq 的是 smtp。qq。com  其他的 要自己去查
                smtp.Port = 25;
                smtp.Credentials = new System.Net.NetworkCredential("这里填写用户名称", "这里填写邮箱密码");
                mm.Subject = "你好";
                mm.Body = "这是测试邮件请您查收";
                MailAddress ma = new MailAddress("需要发送的邮箱");
                mm.To.Add(ma);
                mm.From = new MailAddress("发出的邮箱");
                smtp.Send(mm);
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.ToString());
            }