You can use the MailConverterTools NSF Viewer to read or open an NSF file, making it a great option for accessing corrupted NSF files. The software scans the NSF file and its mailbox data, enabling users to view and read items like emails, contacts, calendars, journals, and events. It also allows users to easily open large NSF files with the NSF File Viewer. Furthermore, the software is fully compatible with all major versions of Windows operating systems.