You can go with SysInspire NSF to PST converter software. It has lots of features such as it can convert your PST, EMLX, EML, Office 365, HTML,etc. It has a feature of Split option you can split your PST file in one click, it has Email filter option you can split your PST files in multiple sizes, it has Name convention feature it can change name in PST file, this tool need 50mb in you hard disk its run on only windows operating system such as Windows XP, VISTA, windows 7, windows 8, windows 10 , windows 11, it can also support all versions of lotus notes. It can run without Outlook. It has technical support 24x7 on email or live chat.