YiL2hPJj

1TcpClient tcpclient = new TcpClient();
2
3            // HOST NAME POP SERVER and gmail uses port number 995 for POP 
4
5            //tcpclient.Connect("pop.gmail.com", 995);
6            tcpclient.Connect("smtp.gmail.com", 465);
7            // This is Secure Stream // opened the connection between client and POP Server
8            System.Net.Security.SslStream sslstream = new SslStream(tcpclient.GetStream());
9            // authenticate as client  
10            //sslstream.AuthenticateAsClient("pop.gmail.com");
11            sslstream.AuthenticateAsClient("smtp.gmail.com");
12            //bool flag = sslstream.IsAuthenticated;   // check flag
13            // Asssigned the writer to stream 
14            System.IO.StreamWriter sw = new StreamWriter(sslstream);
15            // Assigned reader to stream
16            System.IO.StreamReader reader = new StreamReader(sslstream);
17            // refer POP rfc command, there very few around 6-9 command
18            sw.WriteLine("EHLO " + "smtp.gmail.com");
19            sw.Flush();
20            sw.WriteLine("AUTH LOGIN/r/n");
21            sw.Flush();
22            sw.WriteLine("******@gmail.com/r/n");
23            sw.Flush();
24            // sent to server
25            sw.WriteLine("***********/r/n");
26            sw.Flush();
27            //// this will retrive your first email
28            //sw.WriteLine("RETR 1");
29            //sw.Flush();
30            //// close the connection
31            //sw.WriteLine("Quit ");
32            //sw.Flush();
33            sw.WriteLine("MAIL FROM:<" + "******@gmail.com" + ">rn");
34            sw.Flush();
35            sw.WriteLine("RCPT TO:<" + "*******@***.com" + ">rn");
36            sw.Flush();
37            sw.WriteLine("DATArn");
38            sw.Flush();
39            sw.WriteLine("Subject: Email testrn");
40            sw.Flush();
41            sw.WriteLine("Test 1 2 3rn");
42            sw.Flush();
43            sw.WriteLine(".rn");
44            sw.Flush();
45            sw.WriteLine("QUITrn");
46            sw.Flush();
47
48            string str = string.Empty;
49            string strTemp = string.Empty;
50            while ((strTemp = reader.ReadLine()) != null)
51            {
52                // find the . character in line
53                if (strTemp == ".")
54                {
55                    break;
56                }
57                if (strTemp.IndexOf("-ERR") != -1)
58                {
59                    break;
60                }
61                str += strTemp;
62            }
63        }
64	
65"250-smtp.gmail.com at your service, [151.238.124.27]rn250-SIZE 35882577rn250-8BITMIMErn250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTHrn250-ENHANCEDSTATUSCODESrn250-PIPELININGrn250-CHUNKINGrn250 SMTPUTF8rn451 4.5.0 SMTP protocol violation, see RFC 2821 x17-v6sm5346253edx.53 - gsmtprn"