Question

Hy,

I have an application that sends mails with Gmail SMTP server (smtp.gmail.com) using SSL.

Now I want to read the emails from that account, does anyone have any idea how can I make this programatically in C# and ASP.NET?

At this point I’m using this code:

TcpClient tcpClient = new TcpClient();
tcpClient.Connect("pop.gmail.com", 587);

NetworkStream netStream = tcpClient.GetStream();
System.IO.StreamReader strReader = new System.IO.StreamReader(netStream);

Label7.Text = strReader.ReadLine() + "<br />"; 
//Label7.Text = "Server connected!";

byte[] WriteBuffer = new byte[1024];
ASCIIEncoding enc = new System.Text.ASCIIEncoding();

WriteBuffer = enc.GetBytes("USER " + TextBox4.Text + "\r\n");
netStream.Write(WriteBuffer, 0, WriteBuffer.Length);
Label7.Text += strReader.ReadLine() + "<br />";

WriteBuffer = enc.GetBytes("PASS " + TextBox5.Text + "\r\n");
netStream.Write(WriteBuffer, 0, WriteBuffer.Length);
Label7.Text += strReader.ReadLine() + "<br />";

WriteBuffer = enc.GetBytes("LIST\r\n");
netStream.Write(WriteBuffer, 0, WriteBuffer.Length);

String ListMessage;
while (true)
{
    ListMessage = strReader.ReadLine();
    if (ListMessage == ".")
    {
        break;
    }
    else
    {
        Label7.Text += ListMessage + "<br />";
        continue;
    }
}

WriteBuffer = enc.GetBytes("QUIT\r\n");
netStream.Write(WriteBuffer, 0, WriteBuffer.Length);
Label7.Text += strReader.ReadLine() + "<br />"; 

And when I debug it it’s shows that it’s connected but no response in retrieving emails.

Answer 1

POP3 features of this open source project (I’m involved in) contains everything you need. Including secure communications support & advanced authentication.

If you really want to do one yourself, browsing the source code will probably save you days of development.