Stellar Merge Mailbox for Outlook

Merge PST File

With Stellar Merge Mailbox for Outlook software, you can easily merge or join multiple Outlook PST files into a single file as it is a Do-it-yourself tool with user-friendly interface. It is featured with highly beneficial features that help you to merge or join all data items such as Emails, Contacts, Notes, Calendars, Tasks, and Journals without altering the data of the original PST files.

  • Merges and joins multiple Outlook PST files

  • Upholds the integrity of the original PST files
  • Eliminates duplicate data while merging
  • Removes deleted and junk folders
  • Supports password-protected Outlook PST files
  • Provides several saving options for New and existing PST, Outlook Profile, Office 365, and Exchange Server
  • Compatible with Windows 10, 8.1, 8, 7 , Vista , Windows Server 8, and Windows Server 12
*Demo Version Shows Mail Body and Attachments of Merged or Joined PST File in preview.

Key Features

Merges or Joins Multiple PST Files to One

Devised to merge multiple PST files into one, the merge Outlook PST file software easily merges or joins multiple MS Outlook PST files once it gets executed. As a user, you simply need to follow the correct way to accomplish the process of merge and join and perform one or both of the processes as per your wish or need.

Advance Repair

Merge Specific or All Folders

This Merge PST files tool has a feature that enables you to merge only a particular data of the PST files. It can merge Outlook Contacts, Calendars, or any other folder from the specified PST files without the need to merge the entire folder of the Outlook data files. With this feature, you can save time by avoiding merging or joining the unwanted folders.

Unlimited File Size

To merge PST files Outlook, the Merge PST software does not define any restriction on the size of the PST files to be merged or joined. Thus, you can merge or join the Outlook PST files of any size, small or large, with this Stellar Merge Mailbox for Outlook software.

Advance Repair

Preserves Data Integrity of PST Files

This merge PST file tool maintains the data integrity of the original PST files without building any deviations in the original content or structure of the Outlook PST files. This feature applies to both merging and joining of Outlook PST files. Thus, you need not worry about the deformation of the original data files of Outlook.

Merge Password Protected PST Files

The utility is capable of merging both unprotected and password-protected PST files of Outlook email client. In the latter situation, however, users need to know and key in the correct password for successfully merging the PST files of the Outlook email client.

Advance Repair

Removes Duplicate Emails

The merge PST files software has the Remove Duplicate feature to remove duplicate emails based on Subject, Sender Email, and Text while merging two or more PST files into one. It provides 100% assurance for duplicate free items. These Remove Duplicate options are enabled by default in the software for your convenience and can get disabled by unchecking the options.

More Awesome Features

Excludes Deleted and Junk Folder

The merge PST files software removes the deleted and junk folder from the new PST file and hence excludes the deleted and junk data during merging or joining. This is a highly beneficial feature as, in most of the cases, the deleted and junk data are of no use. You can enable it by clicking the Exclude Deleted Folder and Exclude Junk Folder check boxes.

Advance Repair

Quick PST Merging or Joining

Devised with advanced technology to merge Outlook PST files, the utility can complete the PST merge and join process quickly in a short time. This feature helps users in accomplishing the process of merging or joining the Outlook PST files at a considerably high speeds.

Multiple Saving Options

The software offers several options to save the merged or joined PST files. The varied saving options provided are Outlook profile, Office 365, Exchange Server, and new or existing PST files. Thus, depending on your requirement, you can opt for any of the options and save the PST file that you either merged or joined in one.

Advance Repair

User-Friendly Interface

The Graphical User Interface of the software is quite easy to understand, thus making it a user-friendly utility to merge or join PST files. Both novice and professional users can use it to merge or join Outlook PST files into a single file without fail.

Generates Log Report Having Process Details

The merge Outlook PST software generates a log report containing details of the PST merge process. Users can save the generated log report to analyze the merging process of the PST files through this tool any time later.

Advance Repair

Support and Compatibility

The merge Outlook file software, Stellar Merge Mailbox for Outlook supports various versions of the MS Outlook email client as it can join or merge PST files Outlook 2019, 2016, 2013, 2010, and 2007. It is compatible with Windows 10, Windows 8.1, Windows 8, and Windows 7, and thus can be installed, registered, and run on any of these versions of the Windows operating system.

Product Tour for Stellar Merge Mailbox for Outlook

Technical Specifications

About Product

Stellar Merge Mailbox for Outlook


Release Date

August, 2020


Can use only on a single system

Version Support

MS Outlook 2016, 2013, 2010, 2007, 2003 and Office 365


Standard & Toolkit

End User License Agreement


Language Supported

English, German, French

System Requirements

Stellar Merge Mailbox for Outlook


Pentium Class

Operating System

Windows 10, 8.1, 8, 7, Vista , XP & Windows Sever 2012, 2008


1 GB Minimum

Hard Disk

50 MB of Free Space

Download Guides


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*Demo Version Shows Mail Body and Attachments of Merged or Joined PST File in preview.

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Yes. Stellar Merge Mailbox for Outlook software provides you with the option to merge specific folders of multiple PST files that include the Contacts folder. It can also merge other folders such as Emails, Calendars, Journals, To-Do, and Tasks, without having the necessity to merge all folders of the PST files.


When you join multiple PST files, multiple folder hierarchies of each PST file gets created within a single PST file. On the other hand, when you merge multiple PST files, contents of the respective folders such as Emails, Tasks, Contacts, Calendars, Journals, and To-Do in all the PST files gets saved in one PST file, and hence gets merged.


Yes. You can merge the archive files of MS Outlook into a single PST file with this software.


Yes. It supports different Outlook profiles for merging PST files into one.


No. The merge PST software cannot merge damaged or corrupt PST files. You need to ensure that the PST files that are in a healthy state. If you wish to merge the damaged PST files, you should first repair them by using Stellar Repair for Outlooksoftware.


No. It is not possible to join PST files without installing MS Outlook program on your system.


Yes. You can merge or join multiple Outlook PST files into one.


The time for merge/join process depends upon the size of PST file. If process is running, you have to wait for process to complete.