Merge and Join Outlook PST
PST Merge Software to Combine Outlook PST Files
PST Merge combines several Outlook PST files into one. Add the files, choose Merge or Join and save the result as a new PST, an existing PST or an Outlook profile.
- Merge or Join many PST files
- Duplicate removal by item type
- Password protected and ANSI PST files
- Windows and Mac editions
- Free DemoTest before you buy
- 30 Day RefundDemo test comes first
- Card or PayPalHosted store checkout
- Fast License KeySent by email
- 24x7 SupportChat and email
1Is this my case?
Which Cases Need PST Merge?
Find your case below. RecoveryTools software combines your PST files and keeps every folder in order.
- Many Small PST FilesYears of archives sit in separate files and Outlook shows them as clutter.
- Old and New MixANSI files from old Outlook must join a modern Unicode PST.
- Two Accounts Into OneYou want mail and contacts from two profiles in a single place.
- Duplicates After JoiningThe same message appears again after you copy folders by hand.
- Locked PST FilesYou do not know the password of an old archive.
- Space for BackupYou need fewer files before a move to a new computer.
Merge and Join
Combine folders or keep every file apart.
Duplicate Removal
Skip repeated items during the merge.
Locked Files Welcome
Merge locked PST files.
PST Merge saves into a new PST file with no Outlook installed. Existing PST and Outlook profile output need a configured Outlook.
Free demo mode processes 15 items per folder on Windows and 10 on Mac.
2What changes?
What Changes After the Recovery?
Before
- Dozens of scattered PST files
- Duplicate emails after a manual copy
- Hours of drag and drop in Outlook
After
- One PST with every folder in place
- Duplicates skipped during the merge
- CSV report of merged and failed items
3What can it do?
Which Features Come With PST Merge?
Add the file, set your clues and recover the password from one window.
Merge Option
Combine like folders, for example many Inboxes into one Inbox.
Join Option
Keep a separate folder for every PST file in the output.
Duplicate Removal
Skip repeated mail, contacts, calendars, tasks, notes and journals.
Every Outlook Item
Process emails, contacts, calendars, tasks, notes and journals.
Password Protected PST
Merge locked files with no password needed.
Filters and Exclusions
Filter by item type and date range and leave out Deleted Items and Junk.
Three Output Choices
Save to a new PST, an existing PST or your Outlook profile.
CSV Report
Check merged, duplicate and failed items in a report.
Split Large Output
Cut the merged PST into parts by MB or GB.
4Is it easy?
How to Use PST Merge in 4 Steps
Test the software in the free demo. Buy the license when you want the full result.
- 1Download
Install the Demo
Download the installer and install it on your Windows or Mac computer.
- 2Add
Add the PST Files
Click Add File or Add Folder and select the PST files.
- 3Choose
Select Merge or Join
Choose the option and the output type.
- 4Combine
Start the Merge
Apply the filters and click Merge to combine the files.
Screenshots of every step sit in the PST Merge guide.
5What will I see?
Which Screens Does the Software Show?
Follow the path from the first screen to the finished result.

Add Your PST Files
Load files or a folder and select Merge or Join.

Choose the Output
Select folders and a destination for the merged data.

Check the Report
Review the merge status of every file.
6Demo or full?
Free Demo vs Full Version
See where the free demo stops and what a license adds.
| Feature | Free Demo | Full Version |
|---|---|---|
| Merge and Join PST files | Yes | Yes |
| Duplicate removal | Yes | Yes |
| Locked PST files | Yes | Yes |
| Items processed | 15 per folder | Every item |
| Price | Free | From $39 |
7Will it fit my system?
System Requirements for PST Merge
| Product Version | 7.1 for Windows and 3.0 for Mac |
|---|---|
| Download Size | 44.56 MB for Windows and 26.84 MB for Mac |
| Product Type | Desktop software that merges and joins Outlook PST files |
| Input Files | ANSI, Unicode, archive, active, orphan and password protected PST files |
| Output | New PST, existing PST or Outlook profile on Windows |
| Outlook Versions | Outlook 2000 to 2021 in 32 and 64 bit on Windows |
| Windows | Windows 11 in 64 bit, Windows 10, 8 and 7 plus Windows Server 2022, 2019, 2016, 2012 R2 and 2008 |
| Mac | macOS 10.8 up to macOS 15 on Intel and Apple Silicon |
| RAM and Disk Space | 4 GB RAM with 100 MB of free space |
| Pre Requisite | Microsoft .NET Framework 4.5 on Windows. US region and English language on Mac |
| Demo Limit | 15 items per folder on Windows and 10 per folder on Mac |
8What is the price?
How Much Does PST Merge Cost?
Choose the license by the number of computers. Prices are in US dollars.
1 Computer
$39
- Home and private use
- 1 year of free updates
- Unlimited 24x7 support
Up to 100 Computers
$199
- One location in one country
- 1 year of free updates
- Unlimited 24x7 support
Up to 500 Computers
$399
- Offices in many places
- 1 year of free updates
- Unlimited 24x7 support
Mac edition licenses cost the same $39, $199 and $399. Buy the Mac edition license or download the Mac edition demo. See more savings on the RecoveryTools offers page.
9Is it safe?
Can You Trust the Software With Your Outlook Archive?
See Results First
Test the free demo on copies of your PST files and check the merged folders before you pay.
In Business Since 2007
RecoveryTools stands on a company that began in 2007 and now helps users in over 100 countries. Find more about RecoveryTools.
ISO Certified
Standards ISO 9001:2015 for quality and ISO/IEC 27001:2013 for information security back the company. See the awards and certifications page.
Terms in Plain Sight
Refund, privacy and usage terms are public before you pay. See the refund policy, privacy policy and terms of use.
10Need a hand?
Where to Get Help With Your PST Merge
Support engineers answer questions before and after you buy. Visit the RecoveryTools support center for phone numbers and more ways to get help.
Live Chat
Talk to an expert on live chat at any hour.
Email Support
Email support@systoolsgroup.com with your Outlook version and the PST file details.
Remote Session
An expert connects to your computer and solves a hard case for you.
Step by Step Guide
Follow the user guide for the load, preview and export screens.
11Still have a question?
Questions About Merging PST Files
How do I merge PST files into one?
Add the PST files, choose Merge and select where the merged data goes.
How is Join different from Merge?
Merge combines similar folders, for example several Inboxes into one. Join creates a separate folder for every PST file.
Can I merge PST files without duplicates?
Yes. Duplicate removal works on mail, contacts, calendars, tasks, notes and journals. Join does not remove duplicates.
Does the folder structure stay the same?
Yes. Folder hierarchy and seen or unseen status stay in place.
Can I merge password protected PST files?
Yes. Add the locked file and merge it with no password.
Can I merge ANSI and Unicode PST files?
Yes. Both types combine into a single Unicode PST.
Can I leave out Deleted Items and Junk?
Yes. Exclude those folders and filter by item type or date range.
Do I need Outlook installed?
No for a new PST file. Existing PST and Outlook profile output need a configured Outlook.
Can I merge a corrupt PST file?
Minor damage works. Repair a badly damaged file first with Outlook PST Recovery.
How do I check what was merged?
Save the CSV report of merged, duplicate and failed items.
What does the free demo do?
Windows demo processes 15 items per folder. Mac demo exports 10 items per folder. Full version processes every item.
Is there a Mac edition?
Yes. Mac edition 3.0 works from macOS 10.8 up to macOS 15 on Intel and Apple Silicon. Set the system region to United States and the language to English. Get the Mac edition demo or the Mac edition license.
How much does PST Merge cost?
Personal costs $39 for 1 computer. Business costs $199 for up to 100 computers. Enterprise costs $399 for up to 500 computers. Mac edition licenses cost the same.
Can I get a refund?
Yes. Refund requests are accepted for 30 days under the RecoveryTools refund policy. Software bought without a demo evaluation does not qualify. Email a signed Letter of Destruction to sales@recovery-tools.org. Bundle purchases cannot be refunded.
12Where next?
Related RecoveryTools Software
Merge Your PST Files With the Free Demo
Download the free demo, merge a few items and buy the license when you want the full archive.