Thanks for your wonderful suggestions for the list of PST to MBOX Converter. But I think you have missed an important utility to include in this list. You must need to add ZOOK PST to MBOX Converter in this list which is so popular tool and recommended by various happy users. The tool has simple GUI which is so easy to handle for beginners as well as professionals to convert their PST files into MBOX format. Apart from this, it consists of various advance features which makes it convenient for users to save PST files data into MBOX format in few clicks.I hope you'll like it and this will help you to get good results!!