Manual Steps To Merge Multiple Outlook PST Into A Single File

Summary: With improvements in MS Outlook features, PST file sizes aren’t bound by limitations. Thus, users who created multiple small PST files with older Outlook editions are looking for ways to merge them into larger files that can be used as a single entity with newer Outlook versions.

Despite being one of the most favored email clients, Microsoft Outlook has always been marred by some drawbacks. For example, one of the biggest shortcomings in old Outlook versions was that PST files which stored all mailbox data on local systems were bound by size-limit.

Quick Solution: Try Stellar Merge Mailbox for Outlook to Merge your Multiple Outlook PST Files Easily. Compatible with latest MS Outlook version & multiple saving options (Outlook Profile, Office 365, and Exchange Server).

As long as the volume of data stored in them didn’t exceed a certain limit, the files would work perfectly, but their size would be breached, they’d start facing issues like corruption, degraded performance, etc.

Thankfully, Microsoft has resolved this problem in recent Outlook versions like Outlook 2016, 2013, 2010, and 2007 in which there are apparently no size related issues with PSTs. However, now a new kind of hurdle has emerged. Users who have old PST files created with older Outlook versions now need a way to import all their data into larger single PST files that can be used with newer Outlook versions. Thus, in essence, they need to merge multiple PST files. And that’s exactly what we’re covering in this post.

How to merge PST files manually?

If you need to merge multiple Outlook PST files to form a larger file that can be used with the latest Outlook versions, you can use the below mentioned manual steps:

Step 1: Create a new blank PST

To create a new blank PST, follow these steps:

  1. In the Outlook window, click on New Items -> More Items -> Outlook Data File
  2. Select a location to save the new blank PST and provide a name for it
  3. Click on OK

Step 2: Merge all existing PST files into the newly created blank PST

To merge PST files into the new file created above, follow these steps:

In the Outlook window, click on File -> Open -> Import

  1. This will open the Import-Export Wizard. Select Import from another program or file
  2. Click on Next
  3. Select file type Outlook Data File (.pst) to import from
  4. Click on Next
  5. Click on Browse to locate the file to be imported
  6. Check the Do not import duplicates box
  7. Click on Next
  8. Select which folder you wish to import
  9. Check the Include subfolders and Import items into the same folder in boxes
  10. Click on Finish

These steps will import the PST file to the folder you specified in step 8. To import other PSTs, repeat the same steps for each one. Once all files have been imported, their data can be combined into a single PST. The resultant larger PST can then be exported to any machine to access all mailbox data.

An Easy Alternative Way to Merge PST Files:

Though the above-mentioned method is quite simple if followed diligently, rarely, errors might occur owing to wrong selections or problem within the files being merged. Also, users who are not familiar with Outlook wizards or other technical terms may find these steps slightly difficult.

A simpler, quicker, and more efficient way to merge multiple PST files is by using a professional PST merge tool Stellar Merge Mailbox for Outlook. This Do-It-Yourself software allows you to easily merge PST files through a user-friendly interface. You can use it to combine all data items such as Emails, Contacts, Notes, Calendars, Tasks, and Journals without altering the data of the original PST files. Moreover, it automatically takes care to eliminate duplicate data while merging and remove deleted and junk folders. The tool supports password-protected Outlook PSTs and it offers several saving options for new and existing PST, Outlook Profile, Office 365, and Exchange Server.

Stellar Merge Mailbox for Outlook

With such an impressive feature set, this tool is one of the best PST merge tools available in the market.

The Final Word

Combining multiple PST files into one isn’t a tricky process if you’re confident about what to do. If in doubt, avoid all hassles and use the secure and reliable Stellar Merge Mailbox for Outlook for accurate and satisfactory results.

Comments(5)
  1. leesea February 11, 2019
    • Eric Simson February 12, 2019
  2. Mrigank September 27, 2018
  3. Hunter July 25, 2017
    • Eric Simson July 26, 2017

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