I recommend that you choose MBOX to PST software that performs a safe conversion and ensures a positive result. Use this software easily and safely and convert MBOX directly to PST format. The user can save data in various file formats such as PST, MSG, EML, PDF, HTML. The perfect feature that allows users to select and use a smooth, selective conversion that exports items and folders from MBOX to PST.
Visit here: http://www.mboxmails.com/
Start the Apple Mail on your system.Click File >> Import Mailboxes.Select all the files that you want to import in the MBOX. Click Continue.Browse to the location where you have saved in the MBOX file. ...After the process gets complete, click Done