If you want to convert PST files into different other file formats then you can try the PST File Converter tool. It is an advanced option to migrate data into different other file formats and email clients. The software is very easy to use and does not require any technical skill to run. You can easily install this in any version of Windows and convert 50 emails per folder for free. I have personally used this software to convert PST files without attachments and it has given me accurate results.