For users with ongoing access to their original Outlook profile, the Export to PST feature is the most efficient and user-friendly approach. It’s free, quick, and easy to use directly within Outlook. However, if you are dealing with server outages or deleted profiles, third-party tools (many of which offer limited free versions) might be necessary to avoid data loss. For minimal ha... https://dev.to/ats_software_8105619ed53c/free-methods-to-convert-ost-file-to-pst-in-windows-1110-complete-guide-epf