If you are looking for an instant solution to convert MBOX files to PST format then you can take help of most promising MBOX to PST Converter software. The software allow users to convert single or multiple MBOX files to PST format along with all other MBOX files containg emails, contacts, notes, attachments, calendars, journals, etc. The software properly maintains folder hierarchy and data integrity of MBOX files in new PST files. This utility supports all versions of MS Outlook, Windows OS and Mac OS. 

Read more- https://www.emailsguru.com/mbox/pst/