Stellar Merge Mailbox for Outlook

7.9/10 (Expert Score)
Product is rated as #48 in category Email Tools

Developed by Stellar, Stellar Merge Mailbox for Outlook is a powerful merge PST file software to help you easily manage multiple Outlook PST files. This tool provides an efficient way to merge multiple PST files, both active and archived, into a single, unified file without compromising data integrity. With its help, you can simplify mailbox management and improve accessibility, as you no longer need to open multiple PSTs to locate emails, contacts, calendars, or other Outlook items.

The intelligent duplicate removal capability is provided to help you automatically detect and eliminate duplicate emails, contacts, attachments, notes, and tasks when merging PST files to ensure the final PST remains clean and efficient. Another important feature of this software is the ability to merge or join large-sized PSTs, which means Stellar Merge Mailbox for Outlook can handle files of any size, including password-protected PSTs. Throughout the merging of emails, contacts, calendars, notes, and tasks, this tool preserves the original folder structure and mailbox hierarchy, maintaining data integrity.

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Stellar Merge Mailbox for Outlook Coupon Code 2025

Special Offer
Last updated: July 01, 2025 – Make sure to apply the Stellar Merge Mailbox for Outlook coupon code STE***R10 during checkout to avail of a 10% discount.
Stellar Merge Mailbox For Outlook Standard
Stellar Merge Mailbox for Outlook Standard
10% coupon code: regular price: $39, discounted price: $35.10
-10% 100%
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Stellar Merge Mailbox For Outlook Technician
Stellar Merge Mailbox for Outlook Technician
10% off coupon code: regular price: $299, discounted price: $269.10
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Stellar Toolkit For Outlook (Lifetime)
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Stellar Merge Mailbox for Outlook Key Features

Main Features
Stellar Merge Mailbox For Outlook
Stellar Merge Mailbox For Outlook 1
  • Merge Multiple PST Files Seamlessly: Stellar Merge Mailbox for Outlook can combine multiple PST files, including emails, calendars, contacts, journals, notes, and more, into one well-organized PST. It preserves the integrity of all merged data, which means the original folder structure remains intact and cannot be changed. Furthermore, you are allowed to select specific mail items for merging, instead of choosing entire PST files.
  • Join Multiple PST Files Easily: It offers the ability to join PST files from various Outlook versions, ensuring seamless integration of email archives. It can create root folders to house child folders from the source PST files to ensure all merged data remains organized and intact, preserving the original contents after combining the files.
Stellar Merge Mailbox For Outlook Add Files
Stellar Merge Mailbox For Outlook 2
  • Merge or Join Large-Sized PSTs: You can use Stellar Merge Mailbox for Outlook to merge or join PST files of any size, whether small or large. It is fully compatible with Windows 11, Windows 10, Windows 8.1/8, and Windows 7 to install and run on various systems. This tool also retains the original folder structure and mailbox hierarchy when handling large PST files.
Stellar Merge Mailbox For Outlook Root Item
Stellar Merge Mailbox For Outlook 3
  • Remove Duplicate Emails from PSTs: This merge PST files software provides the option to remove duplicate items while merging multiple PST files. It can identify and eliminate duplicate items based on Subject, Sender Email, Text, Sender Name, Recipient Name, Internet Header, Attachments, and Date and Time of Sending, preventing unnecessary clutter, resulting in a cleaner, more manageable mailbox.
  • Remove Deleted and Junk Folders from PST: You are allowed to choose to exclude Deleted Items and Junk Items while merging PST files, ensuring a cleaner final mailbox and avoiding unnecessary clutter in the final PST file.
Stellar Merge Mailbox For Outlook Merge
Stellar Merge Mailbox For Outlook 4
  • Multiple Options to Save the Merged PST: The merged or joined PST files can be saved as a new PST, appended to an existing PST, or exported directly to an Outlook profile, Exchange server, or Office 365. To save the finished PST, simply select the export option and provide the file location.
  • Merge Password-Protected PST Files: This tool also supports merging password-protected PST files of the Outlook email client, provided you have the correct passwords, ensuring that even secured data can be consolidated seamlessly.
  • Generate Detailed Log Report: After merging, this merge Outlook PST tool provides comprehensive log reports detailing the process, including file locations, start and end times, source file, folder names, and more, to help you track and audit the merge process.
Stellar Merge Mailbox For Outlook Join
Stellar Merge Mailbox For Outlook 5
  • Merge Multiple Online/Offline Mailboxes (Technician Edition): Stellar Merge Mailbox for Outlook Technician consolidates multiple mailboxes, enabling seamless access and management in Outlook. It also creates a unified backup for online and offline mail, ensuring recovery in case of data loss or emergencies.
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Pricing Plans & Conclusion

Pricing & Conclusion

Pricing Plans


Plan Type
PriceDetails
Standard Edition$39 – Merge multiple PSTs into one
– Exclude duplicates
– Maintain folder hierarchy
– Merge contacts, calendars, etc.
Technician Edition$299– All Standard features
– Licensed for commercial use
– Use on multiple systems

Free Trial & Refund

  • Free Trial: You can try the software for free. The trial lets you preview the merged PST, but you can’t save it unless you buy the full version.
  • Refund Policy: 30-day money-back guarantee, but only if the software doesn’t work as described.
PROS
  • Merges multiple PST files into one without data loss
  • Maintains original folder structure (Inbox, Sent, Contacts, etc.)
  • Supports merging of password-protected PSTs
  • Option to exclude duplicate emails
  • Supports Outlook 2021, 2019, 2016, and earlier versions
  • Simple, clean UI – beginner-friendly
  • Also merges Contacts, Calendars, Tasks, Journals, and Notes
CONS
  • Only for Windows – no macOS support
  • The free version is limited – you can only preview items
  • No cloud integration – local PST files only
  • Lacks email filtering by date or keyword during merge

Conclusion

Stellar Merge Mailbox for Outlook is a professional tool designed for users or IT pros who regularly deal with multiple PST files. It provides an easy way to consolidate Outlook mailboxes without losing important data like contacts, calendars, or notes. If you’re managing archives, consolidating inboxes, or migrating mail data, it’s worth the investment, especially for personal or small business use.

If you just need a merge and aren’t working across multiple machines, the Standard Edition at $39 is a great value. But the Technician Edition is better suited if you’re an IT admin or consultant.

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Frequently asked questions

Q&A

Does the software support merging NSF files into PST?

Yes, but you must have IBM Notes (formerly Lotus Notes) and Microsoft Outlook installed on your computer to merge NSF files into a PST file.

Can I merge only specific folders like Contacts or Calendar?

Yes, you can choose to merge entire PST files or just specific folders such as Inbox, Contacts, Calendar, etc.

Does Stellar Merge Mailbox for Outlook remove duplicate emails?

Yes, it can identify and exclude duplicate emails during the merging process.

How many mailboxes can I merge at once?

With Technician Edition, you can merge up to 10 mailboxes in a single operation, selecting from Offline Mailbox, Online Mailbox, and Identity Folder options.

How long does the merging process take?

The time required depends on the size and number of mailboxes selected. Larger mailboxes take longer to merge.

How can I get a discount on Stellar Merge Mailbox for Outlook ?

Use the coupon code STE***R10 on WinningPC to get 10% off your purchase of the software.

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Technical Details

Product specification
Language SupportEnglish, Deutsch, Français, Italiano, Español, 日本語
Money Back Guarantee30-Day
Operating SystemWindows 11, 10, 8.1, 8 & Windows Server 2012 (64-bit only)
ShippingRegister code will be sent to your email in minutes
Subscription1-Year
Support ServicesLive Chat, Phone, Tickets
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User’s and Editor’s scores

Add your rating
8Expert Score
Very Good

Stellar Merge Mailbox for Outlook is a tool designed to merge multiple Outlook mailboxes into a single PST file, helping users consolidate emails, contacts, calendars, and other mailbox items. The tool supports merging PST, DBX, and NSF files into a single PST mailbox. After merging, you can import the PST file into Microsoft Outlook to view and access its contents.

Overall
8
Functionality
7.9
Ease-of-use
7.8
Customer Support
8
5/5 - (30 votes)

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