If you want to back up software, I recommend KDETools PST for MBOX tools. PST to MBOX Conversion Tool It is a reliable tool that can be used to convert PST to MBOX file format. The user can use the conversion process and send more files. PST to MBOX files are supported by many email clients such as Pocomail, Entourage, Apple Mail, and others. PST under MBOX Tool Tool Supports all versions of MS Outlook and Windows. Please try the DEMO version for free first.

CLICK HERE: https://www.kdetools.com/pst/mbox/