How to Open PST file without Outlook?

Sometimes you find an old Outlook archive but don’t have Outlook installed on your computer. This can make it hard to see what’s inside your file. In such cases, there’s an easy way to open PST file without Outlook using a dedicated viewer. The MSOutlookHelp PST Viewer lets you browse all your mailbox items like emails, contacts, calendars, and tasks without needing Outlook installed. It supports both old and new PST formats (ANSI and Unicode), so it works with files created in any Outlook version. The tool also handles very large PST files without slowing down, so you can access old data quickly and safely.