The Regain PST file Splitter Tool is a powerful solution for efficiently splitting large Outlook PST files. It offers three splitting options: by size, date, or email sorting (sender, recipient, or subject). The tool ensures all email details, including attachments and timestamps, are preserved, and works with both UNICODE and ANSI files. With a user-friendly interface and flexible output options, it’s perfect for both personal and business use. Plus, a free trial is available to test its features before purchase.