Stellar Merge Mailbox for Outlook is a software that can merge different versions of Outlook PST files including Emails, Contacts, Notes and Calendars. It ensures the original file structure is preserved after merging or joining them.

One of the most impressive features of this software is its ability to tackle large-sized PSTs, including password-protected files, and remove duplicate items. Users can also delete redundant and unwanted items when merging PST files. The software saves merged and joined mailboxes in various locations, such as new or existing PSTs, Outlook profile, Office 365, or Exchange Server.
In conclusion, Stellar Merge Mailbox for Outlook is an excellent software that anyone who wants to merge PST files or specific folders should consider. Its exceptional features, ability to work on password-protected files and hierarchical structure make it an ideal software solution for large companies with several mailboxes.
Version 8.0.0.0:
Support for Japanese language
Auto Update feature implemented