If you need to view Outlook PST files without Microsoft Outlook , there are several options available. You can use a standalone PST viewer, which is generally the easiest choice when you only need to open, inspect, or search PST data without configuring an Outlook account. Another option is to use specialized PST recovery or conversion software when the file is corrupted, orphaned, oversized, or password-protected.

MacSonik PST Viewer is designed specifically for this purpose. It works independently of Outlook on Windows and Mac, allowing you to open PST files and preview emails, attachments, contacts, calendars, tasks, drafts, deleted items, and other mailbox data. It also supports healthy, minimally corrupted, orphaned, empty, oversized, and password-protected PST files.
Open & Read PST Files Easily.

The software also provides advanced search filters for sender, recipient, subject, date range, and attachments, making it easier to locate specific information in large PST archives. After reviewing the data, you can export it to formats such as PDF, EML, MSG, MBOX, CSV, PST, or Microsoft 365.
Open & Read PST Files Easily.

To use it, simply install MacSonik PST Viewer, select Add Outlook File, manually browse to the PST file, load it, and navigate through the mailbox folders to preview the stored data.
Macsonik

For users who want a straightforward way to open PST files without Outlook while retaining access to emails and other mailbox items, a standalone PST viewer such as MacSonik is a practical option.