Yes, you can join PST files created from different Outlook versions. Outlook uses PST files in either the older ANSI format (Outlook 2002 and earlier) or the newer Unicode format (Outlook 2003 and later). When merging PST files across versions, the key is to use a tool that supports both formats and can produce a unified, compatible output file without data loss.
EdbMails
Free PST File Merger Tool is designed for this purpose. It can join or merge PST files from any Outlook version—old or new—while preserving folder structure, avoiding duplicates, and not requiring Outlook to be installed. This makes it useful when consolidating backups, organizing mailbox data, or preparing files for migration.
If your PST files are corrupted, inaccessible, or fail to open in Outlook before merging, you can use the EdbMails
Outlook PST Repair Tool. It can repair damaged PST files, recover mailbox items, and export them to a healthy PST file or directly to Office 365 or Exchange. Repairing the files first ensures a smooth and error-free merge.
Together, these tools help you handle PST files from various Outlook versions reliably—whether you need to repair them, merge them, or both.
