You can use the MailsDaddy PST split tool to break large Outlook PST files. This software does not require any type of configuration or installation of other application. It supports all PST files like: archive, password protected, ANSI and UNICODE. There is no file size limitation. You also do not require any type of technical knowledge. It provides a demo version. By using this demo version users can check the features of this software. It works with all Windows versions including Win 11, 10, 8.1, 8, 7 and all previous versions.