Microsoft.Office.Interop.Outlook.Application app;   Microsoft.Office.Interop.Outlook.Items items;   Microsoft.Office.Interop.Outlook.NameSpace ns;   Microsoft.Office.Interop.Outlook.MAPIFolder inbox;   Microsoft.Office.Interop.Outlook.Application application = new Microsoft.Office.Interop.Outlook.Application();   app = application;   ns = application.Session;   inbox = ns.GetDefaultFolder(Microsoft.Office.Interop.Outlook.OlDefaultFolders.olFolderInbox);   items = inbox.Items;   foreach (var item in items)   {    var mail = item as Microsoft.Office.Interop.Outlook.MailItem;    if (mail != null)    {     if (mail.UnRead == false)     {      Globals.Ribbons.Ribbon1.txtHwabInfo.Text = mail.SenderEmailAddress;     }    }   }