Combine multiple small PST files in MS Outlook

Q – I have multiple small PST files with me whom I want to access but before importing them to MS Outlook. I want to combine multiple files. Is there any quick way by which I can combine these files in MS Outlook? Please share suggestions here.


There is a simple way to combine PST files in Outlook. Simply copy your emails from a different account and paste them in Personal Folders. In this way, you can access all your emails at a single platform.

Try manual method using Outlook email client and you will be easily able to access your small PST files together.

Can you please elaborate the steps to merge PST files manually?

Sure, get the steps are given below –

  • Create a new blank PST file
  • Merge existing PST files into newly created blank PST file

I have followed the method and have successfully created a blank PST file. I don’t know further steps to merge existing files to new PST file. Please explain the steps.

Here are the steps to merge existing PST files into new PST –

  • Open Outlook window
  • Click on File > Open > Import
  • Choose Import from another program or file and then press the Next button
  • Choose Outlook data file (.pst) and click Next
  • Click Browse to locate the file to be imported
  • Check Do not import duplicate items and click Next
  • Select the newly created folder to locate PST files
  • Click Finish

An alternate easy way to combine small PST file into one using a third-party application. You can simply try the applications and accomplish the task in a quick way.

Here, I am suggesting you one link which was found to be useful for me. I am sharing the link here. You can also try this –

Try Merge PST software that can simply join any number of Outlook PST file without considering their size. With this application, you can comfortably join ANSI & UNICODE PST files. The entire process is completed at great speed without changing the quality of the original files. You can try a demo version of the application before going for its purchase.

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