How to use

Connect to Pop3 Server:

Pop3Client pop3Client = new Pop3Client( );
pop3Client.Connect( "SERVER", "USERNAME", "PASSWORD", true );

Retrieve message list

List<Pop3Message> messages = pop3Client.List( );

Retrieve messages

foreach ( Pop3Message message in messages )
{
    pop3Client.Retrieve( message );

    Console.WriteLine( "MessageId: {0}", message.MessageId );
    Console.WriteLine( "Date: {0}", message.Date );
    Console.WriteLine( "From: {0}", message.From );
    Console.WriteLine( "To: {0}", message.To );
    Console.WriteLine( "Subject: {0}", message.Subject );
}

Disconnect from the server

pop3Client.Disconnect( );

How to use in asynchronously way

Connect to Pop3 Server:

Pop3Client pop3Client = new Pop3Client( );
await pop3Client.ConnectAsync( "SERVER", "USERNAME", "PASSWORD", true );

Retrieve message list

List<Pop3Message> messages = await pop3Client.ListAsync( );

Retrieve messages

foreach ( Pop3Message message in messages )
{
    await pop3Client.RetrieveAsync( message );

    Console.WriteLine( "MessageId: {0}", message.MessageId );
    Console.WriteLine( "Date: {0}", message.Date );
    Console.WriteLine( "From: {0}", message.From );
    Console.WriteLine( "To: {0}", message.To );
    Console.WriteLine( "Subject: {0}", message.Subject );
}

Disconnect from the server

await pop3Client.DisconnectAsync( );

How to use in Windows Runtime

var pop3Client = new Pop3.Pop3Client();

consoleLog("Connecting to POP3 server...");
pop3Client.connectAsync("SERVER", "USERNAME", "PASSWORD", true)
    .then(function () {
        consoleLog("List and Retrieve Messages...");
        return pop3Client.listAndRetrieveAsync();
    })
    .then(function (messages) {
        for (var i = 0, len = messages.size; i < len; i++) {
        var message = messages[i];

        consoleLog("MessageId: " + message.messageId);
        consoleLog("Date: " + message.date);
        consoleLog("From: " + message.from);
        consoleLog("To: " + message.to);
        consoleLog("Subject: " + message.subject);
        }

        consoleLog("Disconnecting...");
        return pop3Client.disconnectAsync();
    })
    .done(function () {
        consoleLog("Communication closed...");
    });