C#使用QQ邮箱发送邮件

using System.Net;  
using System.Net.Mail;  
using System.Text;

public static void SendEmail(string fromAddr,string psw, string toAddr,string subject, string body)
{
    MailMessage myMail = new MailMessage();

    myMail.From = new MailAddress(fromAddr);
    myMail.To.Add(new MailAddress(toAddr));

    myMail.Subject = subject;
    myMail.SubjectEncoding = Encoding.UTF8;

    myMail.Body = body;
    myMail.BodyEncoding = Encoding.UTF8;
    myMail.IsBodyHtml = true;

    SmtpClient smtp = new SmtpClient();
    smtp.Host = "smtp.qq.com";
    smtp.Credentials = new NetworkCredential(fromAddr, psw);

    smtp.Send(myMail);
}