C#实现QQ邮箱发送邮件

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.Mail;
namespace mail
{
  class Program
  {
    static void Main(string[] args)
    {
      //发件人地址
      MailAddress from = new MailAddress("*********@qq.com");
      MailMessage message = new MailMessage();
      message.Body = "this is a test";
      message.IsBodyHtml = true;
      message.BodyEncoding = System.Text.Encoding.UTF8;
      //收件人地址
      message.To.Add("********bizip.com");
      message.Subject = "hello !";
      message.SubjectEncoding = System.Text.Encoding.UTF8;
      message.From = from;
      SmtpClient client = new SmtpClient();
      client.EnableSsl = true;
      client.Host = "smtp.qq.com";
      client.Port = 587;
      //邮箱账户和密码
      client.Credentials = new System.Net.NetworkCredential("mailacount","password");
      try
      {
        client.Send(message);
      }
      catch (Exception ex)
      {
        string mssage = ex.ToString();
      }     
    }
  }
}