If you are looking for the best MBOX to PST Converter tool then I will recommend you to use the
MacSonik MBOX to PST Converter. It can convert large and bulk numbers of MBOX files at once which saves a lot of time. Apart from PST, it can also convert MBOX files to multiple file formats like EML, PDF, CSV, etc. This tool gives you a premium feature to remove duplicate emails during the conversion process. It also supports all types of MBOX files such as MBX, MBS, and MSF. Moreover, it is compatible with all versions of MacOS.