How To Combine Multiple PST Files Into One in Outlook 2010/ 2013/2016/2019

If you’re having multiple PST files, you should learn how to combine multiple PST files into one, so that no management issue is confronted. There are two different solutions for combining PST files, you can try any one of them. In my previous post, I’ve discussed Split PST File into Multiple Smaller Parts Manually. Here in this post, we’ll discuss another issue related to Outlook file management. Being a highly popular email client, Outlook is excessively used by millions of desktop users all around the world. It stores all the mailbox content which include email messages, contacts, calendars, notes, tasks, journals, etc. into an Outlook data file, called PST aka personal storage table. Where an oversized PST file can cause severe issues, from Outlook’s poor performance to file corruption, having multiple PST files can also cause problems in file management.

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Think you’re an Outlook user. You have around 40-50 small sized PST files on your system. You must be facing management issues with your PST files as they are numerous. It’s always difficult to manage numerous PST files on the same computer system. In such a situation, experts and professionals suggest combining PST files into a single file. For example: if you’re having 10 PST files of 10 MB each, you can combine them into one. As a result, you’ll get one PST file of 100 MB size which is handy and easy to manage. Now the question is how to merge multiple PST files into one in Outlook?

Outlook users might also be interested in How to Repair PST File with scanpst.exe?

How to combine multiple PST Files?

Generally, there are two ways by which you can merge pst files outlook 2016: an easy manual trick and a professional PST merge tool. The manual trick is as easy and effective as a professional solution, and it doesn’t require any paid tool. You must try it before you can purchase any such paid tool for combining PST files. To perform the manual trick, you can use the Microsoft Outlook client. Unluckily if the manual trick fails or doesn’t work for you, then only you should try a professional tool.

Follow the steps given below:

  •  Launch Microsoft Outlook client on your system.
Merge pst files
  • You need to create a new Outlook data file. For that, on the Home Menu, click New Items > More Items in the options > Outlook Data File.
combine multiple outlook pst files
  •  On the Create or Open Outlook Data File window, browse a location where you want to save this new Outlook data file with a new name. Click OK to save the file.
Merge outlook pst files
  •  Now you can see the new Outlook data file in the navigation pane on the left side.
  • After that, on the File menu, click Open > Import.
combine outlook pst files
  •  On the Import and Export Wizard, select Import from another program or file in the options and click Next.
Combine outlook pst files
  • Here you need to select the file from which you want to import data. Select Outlook Data File (.pst) in the options and click Next.
merge pst files
  • Now click Browse to select the PST file you want to import to this new file. Also, select other options as well (if required). Click Next to continue the process.
combine pst into one
  •  Here you can select the mailbox folder (of the selected PST file) which you want to import to a new PST file. Also, select other options as well (if required). Now click Finish to start the actual process.
multiple pst files into one
  • The mailbox content of the selected mailbox folder is being imported into the new PST file. Please wait until the process gets successfully completed.
multiple pst files into single pst

After that, you need to perform the same trick with another PST file that you want to import to the new PST file. This would be an excellent solution if you need to merge a few PST files. It becomes a time-consuming task if you’re having numerous PST files that you want to merge into a single file. In such a situation, you should try a professional solution to combine multiple PST Files into one file via Manual Tricksut causing any changes or alteration.

Professional Solution – PST Merge Software

There are many software companies in the market which provide professional solutions for combining PST files. You must download a free demo of a few of them before purchasing any such paid software. Generally, 3rd party paid software are available with free demo or trial version for evaluation purpose. The demo or trial of the tool works the same as the licensed version does. But due to a limitation, users can only save the first 25 email items of each mailbox folders of each selected PST file. PST Merge Software supports both types of PST files, i.e. ANSI and Unicode, created by any version of Outlook. There’s no such limitation for selecting PST files, i.e. users can select any number of PST files at a time and merge them within a few mouse clicks.


This software is available with a free demo version to combine multiple PST files. Users must download its demo version before purchasing a licensed version of the tool. If you’re satisfied with the results provided by the demo, you can place your order for fully-featured software.

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