C#邮件发送

public static void CreateCopyMessage() {
    MailAddress from = new MailAddress("yang@163.com");
    MailAddress to = new MailAddress("3@qq.com");
    MailMessage message = new MailMessage(from, to);
    //邮件内容";
    message.Subject = "主题";
    message.Body = "内容";

    message.CC.Add("1@qq.com");//添加抄送
    SmtpClient client = new SmtpClient("smtp.163.com");

    // Include credentials if the server requires them.
    client.Credentials = new NetworkCredential("邮箱帐号", "密码");
    Console.WriteLine("Sending an e-mail message to {0} at {1} by using the SMTP host={2}.",
        to.User, to.Host, client.Host);

    try {
        client.Send(message);
    }
    catch (Exception ex) {
        Console.WriteLine("Exception caught in CreateCopyMessage(): {0}",
                    ex.ToString());
    }
}