If you’re holding on to a PST file and don’t have Outlook installed, this tool is a great lifesaver. MSOutlookHelp PST Viewer lets you browse your mailbox archive and open PST File without Outlook, so you can access emails, contacts, calendars, and more without needing Microsoft Outlook. It supports opening multiple PST files at once and handles any file size, including very large archives. You’ll see your folder structure preserved, so nothing is out of place. Furthermore, the interface is built for everyday users, making the process smooth and straightforward.