You want to split large Outlook PST files into a single PST file. Try the ToolsBaer Split PST Tool, a fantastic application that splits huge Outlook PST files into smaller PST files based on year, size, and folder while protecting the smaller Outlook PST files from degradation caused by file size limitations. Outlook versions 2021, 2019, 2016, 2013, 2010, 2003, and 2000 are all available. Without destroying any data, this application splits each piece of data into distinct PST files. This application is compatible with all versions of Windows OS like 7, 8, 8.1, 10, 11, XP, and Vista. This application can be used without installing Microsoft Outlook.