//收
            Aspose.Network.Pop3.Pop3Client pc = new Aspose.Network.Pop3.Pop3Client();
            pc.Host = "pop.163.com";
            pc.Username = "xxx@163.com";
            pc.Password = "xxx";
            pc.Connect();
            pc.Login();
            pc.SaveMessage(1,@"c:\1.eml");

------解决方案--------------------
应该需要别的Library
Framework默认只能发邮件，不能接收



------解决方案--------------------
public void ReceiveMails(string Username)  
...{  
   jmail.Message Msg=new jmail.Message();  
   jmail.POP3 jpop = new jmail.POP3();  
   jmail.Attachments atts;  
   jmail.Attachment att;  
          
   //username为用户名,该方法通过用户名获取该用户的pop设置,即用户的POP用户名,密码,POP服务器地址以及端口号这四个参数,这四个参数是连接POP服务器的必用参数.  
   SqlDataReader dataReader = this.ExtGetSetting(Username);  
   if(dataReader.Read())  
   ...{  
       if(dataReader["PopServer"].ToString()!=""&&dataReader["PopUsername"].ToString()!="")  
       ...{  
           //连接POP服务器  
           jpop.Connect(dataReader["PopUsername"].ToString(),dataReader["PopPassword"].ToString(),dataReader["PopServer"].ToString(),Int32.Parse(dataReader["PopPort"].ToString()));  
           //如果服务器上有邮件  
           if(jpop.Count>=1)  
           ...{  
               for(int i=1;i <=jpop.Count;i++)  
               ...{  
                   Msg = jpop.Messages[i];  
                   atts=Msg.Attachments;  

                   //取数据库中邮件信息中的最大发送时间,即最近接收到的一封邮件的时间  
                   Database dbase=new Database();  
                   DataTable data=dbase.GetDataTable("select max(MailSendDate) as MailSenderDate from TabMailList where MailTypeFlag='1'
                   if(Msg.Date>Convert.ToDateTime(data.Rows[0][0].ToString()))  
                   ...{  
                       //将这封新邮件的信息保存到数据库  
                       this.SaveExtMail(Msg,Username,dataReader["Email"].ToString(),jpop.GetMessageUID(i));  
                          
                       //获取附件上传到服务器并且将信息存入数据库  
                       if(atts.Count>=1)  
                       ...{  
                           for(int k=0;k <atts.Count;k++)  
                           ...{  
                               att=atts[k];//获得附件  
                               string attname=att.Name;  
                               try  
                               ...{  
                                   Random TempNameInt    = new Random();  
                                   string NewMailDirName  = TempNameInt.Next(100000000).ToString();  
                                   Directory.CreateDirectory(System.Web.HttpContext.Current.Server.MapPath(".")+"AttachFiles"+Username+""+NewMailDirName);  
                                   string mailPath="AttachFiles"+Username+""+NewMailDirName+""+attname;  
                                   att.SaveToFile(System.Web.HttpContext.Current.Server.MapPath(".")+mailPath);