代码如下，值得注意的有一下几点：
1.网易要求使用代理密码而不暴露邮箱密码
2.要求邮箱开通smtp服务
3.要求邮件发送者邮箱和认证的邮箱地址一致。

private void SendEmail(string title, string content)

        {

            MailMessage myMail = new MailMessage();

            myMail.From = new MailAddress("test@163.com");

            myMail.To.Add(new MailAddress("anni@qq.com"));

            myMail.Subject = title;

            myMail.SubjectEncoding = Encoding.UTF8;

            myMail.Body = content;

            myMail.BodyEncoding = Encoding.UTF8;

            myMail.IsBodyHtml = true;

            SmtpClient smtp = new SmtpClient();

            smtp.Host = "smtp.163.com";

            smtp.Credentials = new NetworkCredential("test@163.com", "代理密码");

            smtp.Send(myMail);

        }