We know that MBOX data is not compatible with Microsoft Outlook therefore mostly user search direct solution to load and open MBOX file to Outlook PST format. Here you can try MailsDaddy MBOX to PST Converter tool to convert and open MBOX file to Outlook PST format. This GUI tool has lots of advanced options to migrate data from Gmail, Apple Mail, Thunderbird, Netscape and various other file to Outlook PST format. This single application supports all Windows OS and allows exporting MBOX file into Outlook, Office 365, EML, MSG, LIve Exchange etc.
Get more information: Convert MBOX to PST