I recommend using the MailConverterTools PST File Viewer to view and open PST files without Outlook. The software does not require the Outlook application to open, view, or read PST files. Additionally, it supports PST files from all Outlook versions. You can open password-protected PST files, even if you're unable to recover them. The software is a Windows-based utility and works on all major versions of Windows Operating Systems. Moreover, this tool has no size limitations, allowing you to open large PST files and view corrupt PST files without any data loss. Apart from this, the software has a user-friendly design that anyone can use, whether technical or not. It makes it easy to open and view PST files without any hassle while keeping the original folder structure and formatting intact.