How to merge multiple outlook PST files

Managing numerous Outlook PST files may be a pain, resulting in fragmented data, higher storage space utilization, and lower productivity. Additionally, this can raise issues related to data inconsistency and errors. However, there are several solutions available in the market to merge numerous Outlook PST files into a single file and this makes the selection process more confusing.

This article will talk about the step-by-step process of combining PST files manually and highlight the advantages of merging Outlook PST files with third party software. By following these easy steps, you can efficiently organize your Outlook data and optimize your productivity.

Manual Methods for Merging Outlook PST Files

Method 1: Import and Export Feature

  1. Opening Outlook and opening the Import/Export wizard: Launch Outlook and browse to the File menu. Click on “Open & Export” and then pick “Import/Export” to enter the Import/Export wizard.
  1. Select the “Import from another program or file” option:In the Import/Export wizard, pick the “Import from another program or file” option and click Next.
  1. Choosing the PST file to import and choose the appropriate location: Select “Outlook Data File (.pst)” as the file type to import. Click on the “Browse” option to find and pick the PST file you wish to integrate. Choose the chosen place to import the data.
  1. Specifying settings for duplicate items and folder structure: Select the choices for managing duplicate items and specify how you want the folder structure to be combined. You may either replace duplicates, allow duplicates, or generate duplicate things. Specify whether you want the imported data to be integrated with existing directories or create new folders.

Method 2: Archive Feature

  1. Opening Outlook and heading to the File menu:Launch Outlook and navigate to the File menu.
  1. Selecting the “Archive” option and picking the required folder:In the File menu, pick “Options” and then choose “Advanced.” Under the “AutoArchive” section, click on the “AutoArchive Settings” option. In the AutoArchive dialog box, pick the folder you wish to archive.
  1. Setting the date range for archiving and choosing the location:Specify the date range for archiving. Choose if you wish to incorporate subfolders. Select the place where you wish to store the archived file.
  1. Managing archived things and retrieving them when needed:Archived objects will be transferred out of the specified folder and placed in the archive file. You may access these things by opening the archive file in Outlook. They will be accessible in a distinct folder hierarchy, depending on the original folder layout.

Method 3: Move or Copy Folders

  1. Opening Outlook and choosing the folders to transfer or copy:Open Outlook and choose the folders that you wish to consolidate. Hold the Ctrl key to choose several folders.
  1. Right-clicking on the chosen folders and picking the appropriate option:Right-click on the chosen folders and pick either the “Move” or “Copy” options from the context menu.
  1. Selecting the target place and confirming the action: Choose the destination place where you wish to combine the chosen folders. Confirm the action by clicking on the applicable choice.
  1. Verifying the merged folders and eliminating duplicates if necessary:Once the folders are transferred or copied, check that the combined folders appear in the destination location. Check for any duplicate entries and remove them if required.

Why You Should Use Stellar Merge Mailbox for Outlook?

Stellar Merge Mailbox for Outlook is a sophisticated automatic solution created exclusively for combining multiple PST files. It streamlines the procedure and saves time and work by automatically integrating PST files into a single cohesive file.

Major features and benefits:

Stellar merging Mailbox has numerous major features, including a high-speed merging procedure, support for both ANSI and Unicode PST files, and the ability to combine password-protected files. It protects data integrity and maintains the folder hierarchy throughout the merging. The application also includes options to delete duplicate items and exclude certain directories from the combine.

User-friendly interface and simplicity: Stellar Merge Mailbox has a user-friendly design that makes the merging procedure straightforward and intuitive. The program gives simple instructions and helps users through each step, removing any complexity or technological challenges.

Compatibility with multiple Outlook versions: Stellar Merge Mailbox is compatible with several versions of Outlook, including Outlook 2019, 2016, 2013, 2010, and older. This guarantees that users may effortlessly combine PST files regardless of their Outlook version.

Security and data integrity: Stellar Merge Mailbox focuses on the security and integrity of your data. The program guarantees that no data is lost or corrupted throughout the merging process. It retains the original file structure and saves information, such as email attributes and attachments, to guarantee a reliable and accurate merging.

How to use Stellar Merge Mailbox for Outlook:

  1. Download and install Stellar Merge Mailbox for Outlook.
  2. Drag and drop to add PST files or click on ‘Add PST’ to add PST files you want to merge.Drag and Drop PST Files
  1. Select the PST files you want to merge and click on ‘next’.Select PST files
  1. It will display the preview of the data files in the left pane.preview of data files
  1. Select the folders you want to merge and the saving options. Select the destination where you want to save the merged file.Process of merging PST
  1. Click on ‘merge’ and it will start merging or joining the PST files. It will display a message ‘Process completed’ once done.Merge process completed

Best Practices for Merging Outlook PST Files

  • Organizing folders and subfolders: After merging Outlook PST files, it’s vital to arrange folders and subfolders efficiently. Create a logical structure that meets your workflow and helps you simply access and manage your emails, contacts, and other data.
  • Removing duplicate entries after the merge: Duplicates may clutter your combined PST file, resulting in confusion and inefficiency. Use Outlook’s built-in features or third-party duplicate removal tools to locate and delete duplicate items, guaranteeing a clean and streamlined inbox.
  • Optimizing Outlook performance after merging: Merging PST files may increase the size and complexity of your Outlook mailbox. To enhance speed, routinely condense your PST file, archive older items, and consider utilizing Outlook’s auto-archive option to handle data effectively.
  • Often backing up the combined PST file: To prevent data loss or corruption, it’s vital to back up your merged PST file often. Implement a dependable backup plan, whether it’s utilizing cloud storage, external discs, or a backup program, to assure the safety and availability of your integrated data.


As you have seen that merging multiple PST files together offers several benefits, the Steller Merge Mailbox for Outlook for this is one of the best in the market. It is compatible, fast, easy to operate and comes with a budget friendly pricing option. Start using this tool now and make your work more efficient and productive.

Related News

Latest News

Latest News