To convert PST file to MBOX, you can go with Mac PST Converter that has complete efficiency to perfectly convert PST files to MBOX in Mac & Windows OS. Using the tool, you can simply export PST files to MBOX with batch mode. It enables to save PST file to MBOX with attachments, images, formatting, unread status, etc. The program is effective solution that has lots of developed features that help to provide exact, quick & rapid migration of PST files to MBOX. Read more >> https://www.bitvare.com/blog/how-to-convert-pst-files-to-mbox-format/

To save EML files to PST with attachments, you can go with BitVare for EML that is advanced EML converter tool to save unlimited EML files to PST in one round processing. The tool has capability to view EML files in multiple modes - content, hex view, raw messages, message header. The program has extract option to save attachments, mail address, phone number of emails on your local system. It also provides free demo edition that can export 10 EML files to PST at free of cost. Read more >> https://www.bitvare.com/eml/pst.html