Merge PST Files Outlook 2010 into Single PST File Manually

PST management is always a matter of deep concern for Outlook users. It’s one of the most common issues which Outlook users may often confront. The fact says that whatever large in number, is always difficult to manage or handle. Sometimes you may find it difficult to manage PST files if they’re large in number. In such a situation, you should merge PST files into a single file. PST management becomes easy and effortless in this way. In this article, I’ll show you how you can merge PST files manually, i.e. without using any 3rd party PST Merge tool.

Why Should You Merge PST Files?

It’s very common to have more than one or multiple PST files in the Outlook profile. Generally, 5 to 10 PST files seem normal. But if they’re large in number, you may find PST management and files handling very difficult.

  • A large number of PST files may get misplaced somewhere or lost due to accidental deletion.
  • If you want to access the mailbox data stored in the multiple PST files, you need to open them one by one. It’s definitely a lengthy and time-consuming process.
  • If you need to share the multiple PST files over the network, it takes more than enough time in transferring the files one by one.

How would you deal with a situation where PST management becomes difficult for you? You can simply merge PST files into a single file so that you won’t face any management issues at all. Instead of multiple PST files, it’s better to keep one main PST file which you can easily open, handle, and manage with no problem. The question now arises, how to merge PST files. Well, there are two different methods you can use here: either a DIY trick or a professional PST Merge tool.

Also, read Easy Way to Split PST File into Multiple Smaller Parts

merge PST files into one file

How to Merge PST Files Outlook 2010?

Microsoft doesn’t provide any tool to merge PST files. Even there’s no built-in feature or function in the Outlook client that can help you merge PST files. However, there’s a built-in Import feature which you can use here. Though it doesn’t merge PST files, you can import the mailbox content from two or multiple PST files into a single file.

You just to need to follow these simple steps:

Step 1: First, launch Microsoft Outlook on your system.

merge PST files in Outlook 2010

Step 2: Create a new Outlook data file.

merge PST files in Outlook 2010

Click New Items, point to More Items and click Outlook Data File…

Step 3: On the Create or Open Outlook Data File window, give a name to this new file.

how to create a new pst file

Click OK to confirm your action.

You can see the new Outlook data file in the navigation pane.

merge PST files in Outlook 2010

Step 4: On the taskbar, click File tab > Open > Import.

merge PST files in Outlook 2010

Step 5: On the Import and Export Wizard, select Import from another program or file in the option.

merge PST files in Outlook 2010

Click Next to continue the process.

Step 6: On the Import a File window, select Outlook Data File (.pst).

merge PST files in Outlook 2010

Now click Next.

Step 7: On the Import Outlook Data File window, click Browse to locate the file and select it.

merge PST files in Outlook 2010

You can see the selected file in the edit box. You may check the box Do not import duplicates box, and then click Next.

Step 8: Now select the folder to import from. You may check the box Include subfolders. Keep it unchecked if you don’t want to include subfolders in the output PST file.

merge PST files in Outlook 2010

Also, check either Import items into the current folder or Import items into the same folder in. Finally, click Finish.

Step 9: Outlook starts importing the selected mailbox folder to new PST file.

merge PST files in Outlook 2010

Within a few seconds, the process will be completed successfully. Now you can check the new PST file in which you’ll see all the mailbox folders imported earlier from another PST file. You have to perform the same trick to import the mailbox folders from other PST files into the main PST file you created earlier.

Also, read Safely Compact PST File using Outlook Compact Feature

Important note

If you need to merge a large number of PST files, this manual trick turns into a time-consuming process. Also, keep in mind that you can’t use the above trick if the PST files are corrupt. Due to corruption, you can’t open the PST files. And when you can’t open the PST files, you can’t import anything from them. Therefore, you must repair PST file so that you can import the mailbox content into a new file.

PST Merge Tool – Professional Solution

If you’re looking for a better solution, the PST Merge tool best fits your needs. It’s an award-winning solution recommended by Outlook experts and professionals to merge PST file in minimum possible time. Via this software, you can select any number of PST files at a time and merge them with just one mouse click. It hardly matters whether you’re a tech-savvy or a novice user. You can use this software without requiring any prior technical expertise. Being a non-destructive tool, it causes no alteration to the original PST files. Here are few prominent features of this PST Merge tool:

  • PST Merge tool can merge PST files;
  • Two different options: Merge PST and Join PST;
  • Combine contacts in Outlook separately;
  • Support both ANSI and Unicode PST files created by any Outlook version;
  • Remove duplicate items and/or delete duplicate items in new PST file, etc.

Watch the online video tutorial below


25 Replies to “Merge PST Files Outlook 2010 into Single PST File Manually”

  1. Great site. Plenty of useful info here. I’m sending it to a few friends ans additionally sharing in delicious. And certainly, thanks for your effort!

  2. Hello, I check your blogs named “How to Combine Multiple Outlook PST Files into a Single File? | About N.Sem’s Blog” on a regular basis.Your doing what you’re doing!

  3. Informative blog!! You can also check out other third party applications to merge multiple PST files. As the manual process works well for limited PST files. With PST merge tool merge multiple PST files, folders, contacts, into single PST without losing any original information.
    Thank you.

  4. Do you mind if I quote a couple of your posts as long as I provide credit and sources back to your website? My website is in the exact same area of interest as yours and my users would really benefit from some of the information you provide here. Please let me know if this okay with you.
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  5. What if there are duplicate messages? For example I have found a lot of PST files from all my users – some have over 40. (Not my fault! I’m new here!) I’m sure there are multiple copies of the same message across several PST files. Does the Merge function not import duplicates?

    1. You’ll get three options before merging:
      1. Replace duplicates with items imported
      2. Allows duplicates to be created
      3. Do not import duplicates
      You can select any of these options.
      Thank you.

  6. Hi There, I’m having this issue where error message “This outlook data file (.pst) is already in use in the current profile” pops out when I select the folder to import. Can you please help? I want to merge a few folder under 1.

  7. Is there a way to direct a copy of emails received in different PST to another PST -sub folders? Like –
    PST 1

    PST 2

    PST 3

    PST 4 (new)
    Folder pst1 emails
    Folder pst2 emails
    Folder pst3 emails

    1. Find the SCANPST.EXE here in these locations:

        In MS Outlook 2013: C:Program FilesMicrosoft OfficeOffice15
        In MS Outlook 2010: C:Program FilesMicrosoft OfficeOffice14
        In MS Outlook 2007: C:Program FilesMicrosoft OfficeOffice12
        In MS Outlook 2003: C:Program FilesCommon FilesSystemMSMAPI
        In MS Outlook 2002/XP: C:Program FilesCommon FilesSystemMAPI\scanpst.exe
        In MS Outlook 2000: C:Program FilesCommon FilesSystemMAPI\NTscanpst.exe
        In MS Outlook 97/98: C:Program FilesCommon FilesWindows Messagingscanpst.exe


  8. Helpful post, but anyone having the problem of the PST being currently in use, then ensure that the PST is closed within Outlook otherwise it cannot be used. To do this right click the archive folder and choose ‘Close’.

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