What is the best way to split a large Outlook PST file?

A dedicated PST split tool is a convenient way to divide an oversized Outlook PST file into smaller, manageable parts. MailsDaddy PST Split Tool allows Windows users to split PST files by size, date range, year, or folder while preserving emails, attachments, and folder structure. It works without requiring Microsoft Outlook installation and helps make large PST files easier to organize, store, and manage.

A huge Outlook PST file might slow down email access and make data management very difficult. The simplest approach to deal with this issue is to break the PST file into smaller pieces. DataVare Split PST Expert is an intuitive-to-use tool for splitting huge PST files by size, year, or folder. It maintains data integrity and supports ANSI and Unicode formats. The program does not require the installation of Outlook and is suited for users with a little technological background.

The best way to split a large Outlook PST file is to use a dedicated tool rather than manual copy-paste, which is slow and often breaks folder structures. I used Shoviv PST Splitter Tool, and the process was straightforward: add the PST file, pick a splitting criterion (size, date, year, folder, or email ID), choose a destination, and click Split.

Splitting by size worked well for me because it kept each part small enough for Outlook to open quickly, while splitting by date helped organize older data into archives. All folders, emails, attachments, and metadata stayed intact in every split file.

It supports both ANSI and Unicode PST files and handled a large file without lag. If you’re unsure, the free demo is a good way to test it first.