If you don’t have Outlook installed but need to read your PST files, the easiest way is to use SysInfo PST File Viewer. This free and user-friendly tool helps you open and view all your Outlook data, such as emails, contacts, tasks, and calendars. It doesn’t require any technical setup and works with all types of PST files. You can even open multiple PST files together and view attachments or search for specific messages. It’s a simple, fast, and safe method for anyone who just wants to access their PST files without Outlook.