使用c#+IMap实现收取163邮件

public void Test163()
    {
      var imapServer = "imap.163.com";
      var port = 993;
      using (ImapClient client = new ImapClient(imapServer, port, "xxxx@163.com", "pwd", AuthMethod.Login, true))
      {
        // Returns a collection of identifiers of all mails matching the specified search criteria.
        IEnumerable<uint> uids = client.Search(SearchCondition.Unseen());
        // Download mail messages from the default mailbox.
        IEnumerable<MailMessage> messages = client.GetMessages(uids,FetchOptions.HtmlOnly);

        Console.WriteLine("We are connected!");
      }

    }

protected void Button2_Click(object sender, EventArgs e)
  {
    System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient();
    client.Host = "smtp.163.com";//使用163的SMTP服务器发送邮件
    client.UseDefaultCredentials = true; 
    client.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network; 
    client.Credentials = new System.Net.NetworkCredential("用户名", "密码");//163的SMTP服务器需要用163邮箱的用户名和密码作认证，如果没有需要去163申请个,                                     
    //这里假定你已经拥有了一个163邮箱的账户，用户名为abc，密码为******* 
    System.Net.Mail.MailMessage Message = new System.Net.Mail.MailMessage();
    Message.From = new System.Net.Mail.MailAddress("上述用户名密码所对应的邮箱地址");//这里需要注意，163似乎有规定发信人的邮箱地址必须是163的，而且发信人的邮箱用户名必须和上面SMTP服务器认证时的用户名相同                                
    //因为上面用的用户名abc作SMTP服务器认证，所以这里发信人的邮箱地址也应该写为abc@163.com
    Message.To.Add("目标邮箱地址");//将邮件发送给Gmail
    //Message.To.Add("123456@qq.com");//将邮件发送给QQ邮箱
    Message.Subject = "customer feedback";
    Message.Body = "customer feedback content"; 
    Message.SubjectEncoding = System.Text.Encoding.UTF8;
    Message.BodyEncoding = System.Text.Encoding.UTF8;
    Message.Priority = System.Net.Mail.MailPriority.High;
    Message.IsBodyHtml = true;
    client.Send(Message);
  }