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How to POP3 in C#
Retrieving Messages
Between the calls to Connect and Disconnect,
the client may call three other methods, List, Retrieve and Delete,
any number of times. The client will usually begin by calling our List method
to retrieve an array of messages that are queued on the POP3 server.
public ArrayList List()
{
string message;
string response;
ArrayList retval = new ArrayList();
message = "LIST\r\n";
Write(message);
response = Response();
if (response.Substring(0, 3) != "+OK")
{
throw new Pop3Exception(response);
}
while (true)
{
response = Response();
if (response == ".\r\n")
{
return retval;
}
else
{
Pop3Message msg = new Pop3Message();
char[] seps = { ' ' };
string[] values = response.Split(seps);
msg.number = Int32.Parse(values[0]);
msg.bytes = Int32.Parse(values[1]);
msg.retrieved = false;
retval.Add(msg);
continue;
}
}
}
After sending the LIST message to the POP3 server, the server
will respond with a +OK acknowledgement, followed by several lines
representing one message each and finally by a line with a single period indicating
the end of the messages. Each message line has two numbers, the first indicating
the unique number of the message and the second indicating the message size
in bytes.
Our List method will return a list of Pop3Message objects.
The objects will only contain the message number and size of each message.
In order to retrieve the full message, you can pass the message object to the Retrieve method.
The Retrieve method will then respond with another Pop3Message containing
the message content.
public Pop3Message Retrieve(Pop3Message rhs)
{
string message;
string response;
Pop3Message msg = new Pop3Message();
msg.bytes = rhs.bytes;
msg.number = rhs.number;
message = "RETR " + rhs.number + "\r\n";
Write(message);
response = Response();
if (response.Substring(0, 3) != "+OK")
{
throw new Pop3Exception(response);
}
msg.retrieved = true;
while (true)
{
response = Response();
if (response == ".\r\n")
{
break;
}
else
{
msg.message += response;
}
}
return msg;
}
To retrieve a message from a POP3 server, we send a RETR message
with the unique message number. The server then responds with the +OK acknowledgement,
the message content and finally the single period terminating line.
Randy's article are Copyright 1998-2003 Randy Charles Morin
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hi all ,I have tried
but it does't work ,the message is : "-ERR Cannot connect to POP server 206.190.46.10 (206.190.46.10:110), connect error 10060\r\n"
anyone can help ??
thanks riry
//----------------------------------------------- private void button1_Click(object sender, EventArgs e) { try { Pop3 obj = new Pop3(); obj.Connect("pop3.yahoo.com", "myusername", "mypassword"); ArrayList list = obj.List(); foreach (Pop3Message msg in list) { Pop3Message msg2 = obj.Retrieve(msg); System.Console.WriteLine("Message {0}: {1}", msg2.number, msg2.message); } obj.Disconnect(); } catch (Pop3Exception ex) { MessageBox.Show(ex.Message); } catch (System.Exception ex) { MessageBox.Show(ex.Message); } }
When i change the port to 587 from 110 i got the following error
220 mx.google.com ESMTP g14sm11215098rvb.54
Hi Got the following error when i try to call
obj.Connect("smtp.gmail.com", txtUser.Text, txtPass.Text);
A Connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host failed to respond 209.85.199.111: 110
Can any body please help me to fix this error?
Your code is too good. But in your code what happen If i send email today it display that email & tomarrow it show empty inbox. if i again send email it display that new mail only. And i also want to fetch Email subject,Email Body then what i do. Please give solution