GainTools Split PST Tool can effortlessly split large Outlook PST files without making any mistakes and keeps all the data safe. Large PST files can make Outlook run slowly, cause files to become corrupted, and cause problems that you didn't expect. But this powerful tool can safely split large PST files into smaller, easier-to-handle sections in only a few clicks. The software lets users split PST files by size, year or folder, so they can do it as they like. It keeps the original email properties, attachments, folder structure, contacts, calendars and other mailbox contents safe during the whole process. The tool has a basic, easy-to-use interface and works well with all major versions of Outlook and Windows. You don't need to know a lot about computers to use the software. It also has a free demo version that lets customers try its features and performance before they buy it.