Sure the FixVare OST to EML Converter functions perfectly without an Exchange connection. The application only needs access to OST files that are stored on your local machine and does not require the Exchange or even an Outlook profile configured. It opens orphaned inaccessible or offline OST files efficiently and converts to EML format without any data loss. That is you can extract emails attachments, contacts or any item saved in your mailbox even if it is not connected to your exchange account or was deleted from the Exchange account.