How to Join PST Files and Create a Single Folder in Outlook?

#1 · November 27, 2025, 12:29 pm

Joining PST files means adding each PST as a separate folder inside one master PST. The easiest method is by using a dedicated PST joiner tool. With Advik PST Merge Tool, you can select “Join PST” mode, which creates separate PST file folders (PST1, PST2, PST3, etc.) inside one combined PST. This is helpful when you want to keep data structured but stored in a single file for easy access.