Your duplicate PST files are too large and they're slowing down your Outlook as well as taking up extra space. I want to remove duplicate PST files. Then you can use GainTools Outlook Duplicate Remover. This tool is designed to delete duplicate emails, contacts, calendars, tasks, and attachments from PST files without affecting your important data. It supports bulk PST processing, so you can clean multiple large duplicate PST files at once and save storage space. The software ensures accuracy by comparing data on different criteria such as subject, sender, and date. It works with all versions of Outlook and Windows OS versions 7 to 11. Simple to use, it makes Outlook faster and more organized. Non-technical users can also use this tool without any technical skills; they can use a free demo before buying this tool.