10-25-2025, 01:04 PM
The most reliable way to open PST files without Microsoft Outlook is by using a professional tool like SysInfo PST File Viewer. This software allows you to open, read, and analyze PST files easily without installing Outlook. It supports both ANSI and Unicode PST formats and lets you view all mailbox items, including emails, contacts, calendars, and attachments. The tool also helps you preview large or multiple PST files at once without any size limits. It maintains the original folder structure and provides a quick, clear view of your Outlook data, making it ideal for both personal and professional use.