To Convert PST to MBOX Format? Then I would like to suggest you can also try ZOOK PST to MBOX Converter. This utility allow users to convert PST file to MBOX format along with complete mailbox data and all other items like contacts, calendars, notes, tasks, journals, etc. The software is committed to protect entire data integrity and original folder hierarchy of PST file into MBOX file format. It is capable to convert highly corrupted, damaged, orphaned or encrypted PST file to MBOX without any data loss. This utility fully supports PST file Outlook 2019, 2016, 2013 and all below versions.

Check for more details at:  https://www.zooksoftware.com/pst-to-mbox/