ImapX.ImapClient client = new ImapX.ImapClient
{
   Port = 993,
   UseSsl = true,
   Host = "imap-mail.outlook.com"
};
if (client.Connect())
{
   client.Login("emailHere", "PassHere");
   var messages = client.Folders.Inbox.Search("ALL");
   MessageBox.Show("Done search...");
}