Recently I needed a tool that could convert all my MBOX files into multiple file formats.. Then my close friend suggested that I use MacSonik MBOX Converter. This software is still working properly. It is helpful to convert multiple MBOX files to PST format along with attachments. With the help of this tool, you can convert MBOX files to different file formats and several email clients. You can also split the resultant PST file into many smaller files. Additionally, it supports all versions of Mac operating systems.