Open a PST file

Sometimes you only need to check or search through your old PST mailbox but don’t want to set up Outlook just for that. This article explains an easy solution for how to Open a PST file Without Outlook using a standalone viewer application. The MSOutlookHelp PST Viewer works even with orphaned PST files that aren’t connected to an Outlook profile, so old backups still open without issues. The tool also offers a clear tree-view of your folders, letting you navigate through your mailbox just like in Outlook, but without the software.