Receiving IMAP IDLE notifications

using System;
using S22.Imap;

namespace Test {
    class Program {
        static void Main(string[] args)
        {
            using (ImapClient client = new ImapClient("imap.gmail.com", 993, "username",
              "password", AuthMethod.Login, true))
            {
                // We should make sure IDLE is actually supported by the server.
                if(client.Supports("IDLE") == false) {
                    Console.WriteLine("Server does not support IMAP IDLE");
                    return;
                }

                // We want to be informed when new messages arrive.
                client.NewMessage += new EventHandler<IdleMessageEventArgs>(OnNewMessage);

                // Put calling thread to sleep. This is just so the example program does
                // not immediately exit.
                System.Threading.Thread.Sleep(60000);
            }
        }

        static void OnNewMessage(object sender, IdleMessageEventArgs e)
        {
            Console.WriteLine('A new message has been received. Message has UID: ' +
                e.MessageUID);

            // Fetch the new message's headers and print the subject line
            MailMessage m = e.client.GetMessage( e.MessageUID, FetchOptions.HeadersOnly );

            Console.WriteLine("New message's subject: " + m.Subject);
        }
    }
}