Thank you for sharing this information. One challenge many users face with OST files is that they become inaccessible when the original Exchange, Microsoft 365, or Outlook profile is no longer available. In such situations, exporting the mailbox to PST can help preserve emails, contacts, calendars, and other mailbox data.

Before choosing any conversion solution, users should verify whether the software can handle orphaned OST files, maintain folder hierarchy, recover deleted items, and support large mailbox sizes. I have also seen users discuss tools such as Aryson OST to PST Converter for these scenarios, especially when manual recovery methods are not practical.

It is always a good idea to test a demo version first and compare the results before proceeding with a full migration or recovery process.