If you are looking for an OST to PST Converter tool then I recommend you to go for MacSonik OST to PST Converter. This software can migrate OST to OST format with 100% accuracy. It helps to convert OST files into MBOX, DOC, PDF, and many other file formats. Apart from this, this tool is suitable for all versions of the Mac OS and it also gives you Date Range Filter features which help users filter emails based on date.