If you want to convert MBOX to Outlook PST, I recommend using the best MBOX to PST converter app. SysInspire is a tool that converts MBOX files to PST files. With the help of this tool, you can convert MBOX to PST files in a matter of seconds. It can instantly import MBOX files into Outlook and convert PST files without affecting the data. It works for all versions of Microsoft Outlook.