How to Combine Multiple Outlook PST Files Into A Single File? – Instant Guide

Srishty | May 31st, 2019 | Outlook, Tips

Most of the Outlook users are searching for a solution to combine multiple Outlook PST files into a single file at once. MS Outlook releases new versions from time to time with more features and storage space, so users upgrading from an older version to a newer version of Outlook. Now, users have multiple PST files that are difficult to manage and impact the performance of Outlook. To resolve this problem, users want to merge PST files into one file. This blog is all regarding how to combine PST files into one file.

Know About PST File

PST file stores and export all Outlook data like emails, calendars, notes, contacts, tasks, journals and more. It is also known as the Outlook data file. PST file has size limitations in different versions of Outlook. In the recent versions like Outlook 2010, 2013, and 2016, a size limit is up to 50 GB. Outlook 97 to 2000 supports the ANSI PST file format. In Outlook 2003 and latest versions supports the UNICODE PST file.

Reasons to Merge PST Files Together

There are so many reasons for merging Outlook .pst files into single one. Some of them are-

  • Users want to combine the ANSI PST file with UNICODE PST.
  • To import old PST files in the latest versions of Outlook.
  • Users want to access all PST files in one place.
  • To merge Outlook archives into another PST file
  • To combine multiple Outlook accounts into one.

Manual Guide to Combine Multiple Outlook PST Files into A Single File

The manual method has different two steps. First, create a new PST file and Second import old PST files into a newly created blank PST.

Step 1. Create A New Blank PST File in Outlook

  • Open Outlook application and go to New Items >> More Items >> Outlook data file
  • Select the required location to save a new PST file and give it a name
  • In the end, click the OK button and you are done.

Step 2. Import Old PST Files into Newly Created PST File

  • In Outlook, click on File >> Open >> Import
  • Import/Export window will appear, here, select Import from another program or file option
  • In the Import a File window, select Outlook Data File option and click Next button
  • Click on the Browse button and select the file to import. Select the option “Do not import duplicates” and click Next
  • Select the folder which you want to import. Check the box “Include subfolders” and “import items into the same folder
  • Click on the Finish button.


What Challenges Do Users Face Using the Manual Method?

The manual process for merging Outlook .pst files into single one is undoubtedly very long and time-consuming. If you want to merge two PST files into one, then the manual process is the best. But if you have multiple PST files, you must repeat the steps for all PST files to import into a newly created PST file. Because Outlook only supports one PST file to be imported at a time. Now, users have no enough time to import PST files one by one and they want a solution that can instantly combine PST files into one.

Instant Solution to Combine Multiple Outlook PST Files Into A Single File

To merge PST files together quickly, you can try SysTools PST Merge Software. This is able to merge Outlook data files 2016, 2013, 2010, 2007 in a single file without damaging any kind of information. It only takes a few minutes for merging Outlook .pst files into single one. The software has the option to join PST files or Merge Outlook PST files. You can easily choose any of the options which are suitable to fulfill your needs. With this application, you can combine PST files with all items like emails, calendars, tasks, contacts and more. It is compatible with all Microsoft Outlook versions and runs on every Windows OS editions including Windows 10. You can easily merge Outlook archives and password protected PST files with this tool without any data loss.

Steps to combine multiple Outlook PST files into a single file are as follows;

Step 1. Download the PST Merge tool and install it on the system

Free Download PST Merge Tool

Step 2. Select Add Files or Add Folders option to load PST files.

Merge PST Files or Folders

Step 3. Choose an option: Merge PST Files or Join PST Files.

Combine Multiple PST Files Into A Single File

Step 4. Merge in New PST, Existing PST or an Outlook Profile.

Merge PST Files Together

Step 5. In Advanced options, check Split PST File Size, Exclude Deleted Items & Junk Folder, Skip Duplicate Items options as per your choice.

Combine PST Files

Step 6. Finally, click the Next button and your PST files have been successfully merged in a few minutes.

Combine Multiple Outlook PST Files Into A Single File

Concluding Words

The query: how to combine multiple Outlook PST files into a single file is resolved now. We discussed manual and automated way to accomplish this task. To instantly combine PST files, it is highly recommended using the professional software that is able to merge Outlook emails, Outlook contacts, Outlook calendars, and other data items that are saved in PST files.