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Stellar Merge Mailbox for Outlook Review

Managing various PST (Personal Storage Folder) files might be problematic when you have numerous user accounts in Outlook. Furthermore, the PST files may include duplicate mail items, creating a mess.

Merging several PST data into a single PST can help you solve Outlook performance and other problems with maintaining numerous PSTs. Manually integrating multiple PST files into a single file is time-consuming; hence you are recommended to use the tool to get the job done. 

Additionally, the manual approach could result in data inconsistency errors, making a specialized merge PST files application a better option. While the internet is packed with many options, choosing the rightmost among them is undoubtedly intimidating. But not to worry about it as we have done a task for you.

In this piece, we’ll go over the features and functions of Stellar Merge Mailbox for Outlook and its ease of use, speed and performance, and compatibility. Scroll down the post and make an informed choice. 

Benefits of Choosing Stellar Merge Mailbox for Outlook Software

Stellar Merging Mailbox for Outlook is a powerful PST file merge application that combines or merges several Outlook PST data into a single PST file. It also allows you to exclude the Trash or spam Items folder from PST files. 

Now let’s look at the essential parameters of Stellar’s Outlook merge mailbox tool:

1. Functionality and Features

The tool is packed with various features that give it an edge over competitors. We have explained few key features of this software below. 

  • Merging large and password protected files

Merge Outlook PST Files is a program that allows you to merge or combine PST files of any size. It also aids in the merging of password-protected PST files by allowing the user to enter the password for the files.

  • Removal of duplicate emails

During the merge of PST files, the software allows you to delete duplicate entries. It assists in the removal of the same things based on the email id of the sender, name of the sender, subject, time and date of sending the email, and other factors.

  • Removes spam and trash folder

The software also allows you to exclude the trash and spam items folders during the merge procedure. This is a useful function for removing unnecessary data from the merged PST.

  • Merge Password-Protected PST Files

The tool can easily merge password-protected PST files, making it an ideal option for all. All you need is to enter the password of the outlook files that need to be merged, and you are done. 

2. Performance

The software simplifies merging or joining PST files into three simple stages. However, depending on the size of the PST files, merging/joining them may take some time.

Step-by-Step Guide To Use Merge PST File Tool

Here’s mentioned a step-by-step procedure to utilize Merge PST File Tool appropriately. 

Step 1: Merge PST file

  • In the Stellar Merge Mailbox for Outlook software, add the PST files you want to merge or join. 
  • You may either drag and drop the PST files or use the Add PST icon on the Home menu to add them. 
  • To continue with the merge, click Next.

Step 2: Preview the merged files

  • A preview window appears in the Stellar Merge Mailbox for Outlook software. 
  • Under the root node, the left panel contains all folders holding all the objects of the merged/joined PST file. 
  • In the middle pane, click on any folder enables you to see its contents.

Step 3: Saving the final PST file

  • Before saving the merged PST file data, use the preview option to double-check it. 
  • After validating the data, save the merged PST in a new or existing PST, Office 365, Outlook profile, or Exchange Server. 
  • After selecting the export option for saving the final PST, navigate to the directory where you want to save the file and click Merge.
  • In the case of saving it to Office 365, the login credentials have to be specified.
  • For saving the merged PST file on an Exchange server, specify the login credentials, mailbox email ID, and server name.
  • After the merge/join operation has been finished successfully, the message “Process completed” appears.

3. Compatibility

Merge PST File Tool is second to none when it comes to compatibility. It works seamlessly with almost all operating systems. 

  • The program supports outlook 2019, 2016, 2013, 2010, and previous versions. 
  • Furthermore, Windows 7, 8, 8.1, and 10, Windows Vista, Windows Server 8, and Windows Server 12 are also supported.

4. Pricing

While the software is free to download, you have to go for the premium version to access additional features. There are two options available to choose from – Standard and Toolkit. 

  • Standard

You can use this version of software on single system. 

  • Toolkit

It can be easily used on three systems. Along with merge mailbox, you can repair corrupt PST/OST file, split large sized PST, delete duplicate emails, and more via toolkit.


So, that’s all about Merge PST File Tool by Stellar. We hope our in-depth research will help you make the right choice. This powerful tool comes with excellent compatibility and budget-friendly pricing options. Add this tool to your app drawer now and merge all required files into a single PST in a few clicks.