I want to suggest you this most Reliable utility MBOX to PST Converter Software that has capability to Convert MBOX file to Outlook PST format.
This MBOX to PST Converter is a very helpful solution for those users who want to import MBOX mail to PST in bulk mode at one time without losing any data with email items.
By using this MBOX to PST Converter users also export MBOX to Office 365 server and Live Exchange server.