currentOperationTioken = new CancellationTokenSource();
client = new ImapClient();

client.Connected += Client_Connected;

client.Authenticated += Client_Authenticated;

client.Connect("imap", 993, true);
client.Authenticate("login", "pass");

inbox = client.Inbox.GetSubfolder("some");

inbox.Open(FolderAccess.ReadOnly);

inbox.CountChanged += Inbox_CountChanged;

client.IdleAsync(currentOperationTioken.Token);


lock (client.SyncRoot)
{
    foreach (var uid in inbox.Search(SearchQuery.NotSeen))
    {
        //var message = inbox.GetMessage(uid);
        Console.WriteLine(inbox.GetMessage(uid).Subject);
    }

    Console.WriteLine(inbox.Count);
}