Do you have large sized PST files in your Outlook profile? Do you want to split them into multiple parts? You can try SysInfoTools PST Split tool to split Outlook PST files. There is no size limit, i.e. you can split any size of PST file (up to 60 GB). It safely splits the PST files and saves them at user defined location without causing any damage to the files. It allows you to password-protect new PST files and attach them to Outlook profile.