public MainWindowViewModel(IEmailValidation emailValidation, IHighlighter highlighter, IEmailCache emailCache, IAttachmentHistory attachmentHistory)
        {
            _emailValidation   = emailValidation;
            _highlighter       = highlighter;
            _emailCache        = emailCache;
            _attachmentHistory = attachmentHistory;

            Documents = _attachmentHistory.Initialize();

            // CreateExcelFile();
            //      DownloadTimer();
        }
 public AttachmentHistory(IFolderNames folderNames, IEmailCache emailCache)
 {
     _folderNames = folderNames;
     _emailCache  = emailCache;
 }