How to Merge Multiple Archive Files Manually? – Step by Step Guide

Published By Mohit Jha

Approved By Nimisha Ramesh

Published On November 20th, 2025

Reading Time 5 Minutes Reading

Do you want to know the solution to merge Outlook archive files into one? If yes, you are on the right blog. In today’s write-up, we will discuss one of the most successful and best ways to merge Outlook archive PST files and make one file.

Sometimes, users are exposed to data corruption, accidental deletion, improper data management, and performance issues with Outlook due to a large number of data files. Users create Outlook archive .pst files, which are used as a backup that can be easily accessed in Outlook at any time. To organize and manage multiple archives, it is a good idea to combine archives.

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If the Outlook mailbox is large, users can move old items to an archive, a separate Outlook data file (.pst), which you can open at any time from Outlook. Now, users have multiple archive files and need to combine them all. It is easy to archive items, but how to merge the files that are in an archive folder is the big question for users. In the next section, we are going to explain the whole process of performing this task.

Also Know : Know how to Manage Multiple Calendars in Outlook

Now, let us take further steps below so that we can know some important reasons. So, let’s start knowing.

Why is Merging Outlook Archive Files Beneficial?

It is complicated to manage several archives. However, merging them into one file is the best option to handle. Here are some benefits of merging:

Avoid data loss or accidental deletion issues
Save time by avoiding multiple PST files
Avoid sharing files one at a time
Maintain the performance of the Outlook application
Access data from multiple accounts in one place

After knowing the reasons, now, let us move on to the section below to learn about the solution to combine bulk archive PST files

Merge Multiple Outlook Archive PST Files Manually

To merge archive PST files, it is recommended to create a new PST file and import all archive PST files into the newly created file. Perform the steps below to complete this task.

Part-1: Create a Blank New PST File

Click New Items and select More Items >> Outlook Data File

Select the location to save the new PST file and give it a name.
In the end, click OK.

Part 2: Import All Archive Files Into Newly Created Blank PST File

Click on the File tab and select Open & Export >> Import/Export

Select “Import from another program or file” and click Next to combine multiple archive .pst files

Select the option “Outlook Data File (.pst)” and click Next to merge Outlook archive PST files.

Now, browse the file that you want to import and select “Do not import duplicates“.

Check the “Include subfolders” and “Import items into the same folder in” boxes.

Click Finish, and that’s it.

Are There Any Limitations With the Manual Method?

Yes, the manual process has some limitations. The whole process is very time-consuming and tedious. You must repeat the import method to accomplish the process of merging archive PST files. With this method, there is a possibility that data may be lost or damaged.

Read More: Know How to Merge Outlook Inboxes 2019,2016, 2013, 2010

As you can see, the manual method has limitations that you will face while following the process. So, to get rid of these problems, try the professional method given below, which is very reliable.

Advanced Solution to Merge Outlook Archive Files

If you want a quick and secure way to accomplish this task, you must go with the Advanced PST Merge Tool. This is an advanced utility that provides the facility to merge two archive PST files or more PST files without size and data loss problems. You can download the tool for free to test its effectiveness. The software has a simple and friendly interface for non-professional users.

First, download the tool. After that, follow the steps below to add Outlook archive files:

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Quick Steps to Merge Outlook Archive Files are as Follows;

Step 1. Install the software on the Windows OS system and add the Outlook archive file.

Step 2. Select the Merge option to combine Outlook archive files.

Step 3. Next, choose to Merge all Folders or Only Selected Folders to Merge Multiple Outlook Archive Files.

Step 4. Select Merge in a new PST, Existing PST, or Outlook Profile according to your need.

Step 5. Select the items you want to merge, like Mail, Calendar, Contacts, Tasks, Journals, and Notes.

Step 6. Click on the Next button to merge multiple Outlook archive files.

This is the simplest way to add multiple archive PST files quickly without having to worry about the size and original data formatting.

Advantages of Using Smart Solution

The application provides multiple features and benefits. Some of the highlighted features are-

Merge two Outlook archive PST files without size and data loss issues
100% secure from virus or malware attack
Supports the PST file of Outlook 2021, 2019, 2016, 2013, 2010, 2007, etc.
Helpful to consolidate multiple Outlook archive files without duplicate items
Merge Outlook folders: Inbox, Contacts, Sent Items, etc., with the same name.
Supports joining or merging Outlook data files to existing PST, new PST, or Outlook profile
Remove duplicates from Outlook Mail, Contacts, Calendars, Tasks, Notes, and journals

Conclusion

Creating archive files is useful, but managing these files is a very complicated and hectic task. To simplify this, merging archive PST files is the best solution to manage all the files in one place. Here, we have explained the manual and automated methods to merge multiple archive PST files. You can choose any method that meets all your needs. Make sure you use a safe and simple solution that will not affect your data.