Lotus Notes Database Combiner
Lotus Notes NSF Merge Software
NSF Merge combines many Lotus Notes NSF files into one. Merge similar folders together or join every file under a new parent, drop duplicates and deleted items on the way and watch the live status.
- Merge and join modes for NSF files
- Duplicate and deleted item filters
- Archives, mailboxes and Domino files
- Works on Windows 11 and Windows 10
- 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 an NSF Merge?
Find your case below. RecoveryTools software combines Lotus Notes databases without manual copying.
- Many Archive Files to CombineYearly archives leave a pile of NSF files that are hard to search.
- Mail in Several NSF FilesOne user keeps mail in old and new NSF files and needs a single place.
- Duplicate Mail After CopyingCopies of the same emails sit in more than one database.
- Deleted Items Inflate the FileOld deleted mail keeps the NSF file larger than it should be.
- Address Books Sit ApartContacts live in separate Names.nsf files.
- Domino Server Files in Offline ModeServer NSF files wait for a clean merge on one workstation.
Merge Similar Folders
Inbox folders from many files land in one Inbox.
Join Under a Parent
Every NSF file keeps its own folder in the output file.
Filter While Combining
Skip duplicates and deleted items on the way.
Merge puts similar folders into one folder. Join keeps every NSF file as a separate folder under the output file.
Browse the Names.nsf file on its own when you want the contacts to merge too.
2What changes?
What Changes After the Merge?
Before
- Mail spread over many NSF files
- Duplicate items fill the database
- Manual copying takes days
After
- Mail sits in one NSF file
- Duplicates and deleted mail stay out
- Merge finishes in one session
3What can it do?
Which Features Come With NSF Merge?
Add the files, choose the mode and start from one window.
Merge NSF Archives
Combine two or more Lotus Notes databases into one common file.
Join NSF Files
Keep similarly named folders apart by joining files under a parent.
Remove Duplicates
Drop repeated items from the archives before the merge.
Exclude Deleted Items
Leave the Deleted Items folder out of the output file.
Every Item Type
Merge emails, contacts, calendar entries, notes, tasks and journals.
Custom Display Name
Set the parent folder name that the output file shows.
Live Status
Watch the folder hierarchy and the duplicate count during the merge.
File and Folder Mode
Add NSF files one by one or add a complete folder.
Domino Server Files
Merge server NSF files that sit in offline mode.
4Is it easy?
How to Try the Merge in 4 Steps
Test the merge on copies of your NSF files in the free demo. Buy the license once the output looks right.
- 1Download
Install the Demo
Download the 13.4 MB installer. Microsoft .NET Framework 4.5 or above must be on the computer.
- 2Add
Add Your NSF Files
Click Add Files for single files or Add Folder for a complete folder. File names and paths show in the list.
- 3Choose
Select the Mode and Filters
Select Join or Merge. Tick Remove Duplicates and Exclude Deleted Items when you need them.
- 4Merge
Start the Merge
Select the output folder and click Merge NSF Files. Demo mode joins 2 folders per file and merges 15 items per folder.
Screenshots of every step sit in the NSF merge guide.
5What will I see?
Which Screens Does NSF Merge Show?
Follow the path from adding files to the final merge.

Add NSF Files
Use Add Files or Add Folder to load the databases.

Merge With Filters
Combine similar folders and skip duplicates and deleted items.

Join Under a Parent
Join keeps every file as its own folder and offers the deleted items filter.

Start the Merge
Select the output folder and click Merge NSF Files.
6Demo or full?
Free Demo vs Full Version
See where the free demo stops and what a license adds.
| Feature | Free Demo | Full Version |
|---|---|---|
| Add files and folders | Yes | Yes |
| Remove duplicate items | Yes | Yes |
| Exclude deleted items | Yes | Yes |
| Join NSF files | First 2 folders | All |
| Merge NSF files | 15 items per folder | All |
| Merge contacts | 15 contacts | All |
| Price | Free | From $99 |
7Will it fit my system?
System Requirements for NSF Merge
| Product Version | 1.0 |
|---|---|
| Download Size | 13.4 MB |
| Product Type | Desktop software that merges and joins Lotus Notes NSF files |
| Input Files | NSF archives, mailboxes and Names.nsf address books |
| Lotus Notes | Lotus Notes 9.0, 8.5, 8.0, 7 and 6 and earlier versions |
| Windows | Windows 11 (64 bit), Windows 10, 8.1, 8 and 7 and Windows Server 2012 and 2008 |
| Processor | 1 GHz processor, 2.4 GHz recommended |
| RAM and Disk Space | 512 MB RAM with 1 GB recommended and 80 MB of free disk space |
| Pre Requisite | Microsoft .NET Framework 4.5 or above |
| Admin Rights | Start with "Run as Administrator" on Windows 11, 10, 8.1, 8 and 7 |
| Mac | Not available, Windows only |
| Demo Limit | 2 folders joined per file and 15 items merged per folder |
8What is the price?
How Much Does NSF Merge Cost?
Choose the license by the number of computers. Prices are in US dollars.
1 Computer
$99
- Home and private use
- 1 year of free updates
- Unlimited 24x7 support
Up to 100 Computers
$299
- One location in one country
- 1 year of free updates
- Unlimited 24x7 support
Up to 500 Computers
$499
- Offices in many places
- 1 year of free updates
- Unlimited 24x7 support
Need to cut large NSF files as well? Get the Lotus Notes NSF Split tool. Compare every bundle on the RecoveryTools offers page.
9Is it safe?
Can You Trust the Software With Your NSF Files?
See Results First
Test the free demo on copies of your files and check the output 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 NSF 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 Windows version and the error message.
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 join and merge screens.
11Still have a question?
Questions About Merging NSF Files
Which Lotus Notes items does the software merge?
Emails, contacts, calendar entries, notes, tasks and journals all merge into one NSF file. Browse the Names.nsf file separately to merge contacts.
What is the difference between Merge and Join?
Merge combines similar folders from every NSF file into one folder. Join places every NSF file under the output file as its own folder. Inbox1.nsf and Inbox2.nsf stay apart.
Can I remove duplicate items while merging?
Yes. Tick Remove Duplicates in Merge mode and repeated items stay out of the output file. Join mode offers the Exclude Deleted Items option only.
Can I leave out deleted emails?
Yes. Tick Exclude Deleted Items and the software skips the Deleted Items folder in Merge and in Join mode.
Can I merge Lotus Notes archive files?
Yes. Add two or more archive NSF files and the software combines them into one common archive without a change to the folder structure.
Can I merge NSF files from a Domino server?
Yes. Files from a Lotus Domino server work when they are in offline mode.
Can I rename the merged file?
Yes. Set a custom display name for the parent folder of the output NSF file.
Does the software show the progress?
Yes. Live status shows the folder hierarchy of the merged files and the count of duplicates removed.
Which Lotus Notes versions work?
Lotus Notes 9.0, 8.5, 8.0, 7 and 6 work along with earlier versions.
Which Windows versions work?
Windows 11 (64 bit), Windows 10, 8.1, 8 and 7 work. Windows Server 2012 and 2008 work too. Microsoft .NET Framework 4.5 or above must be on the computer.
What does the free demo include?
Demo mode joins the first 2 folders of every NSF file and merges the first 15 items of every folder. Contact merging stops at 15 contacts. License keys remove all limits.
How much does the software cost?
Personal costs $99 for 1 computer. Business costs $299 for up to 100 computers. Enterprise costs $499 for up to 500 computers.
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 Lotus Notes Tools and Guides
RecoveryTools Lotus Notes NSF Split
Cuts large NSF files into smaller parts.
RecoveryTools Lotus Notes to Exchange Migration
Moves Notes mailboxes to Exchange.
RecoveryTools MSG to Lotus Notes
Imports MSG files into Lotus Notes.
RecoveryTools PST Duplicates Remover
Removes duplicate items from Outlook data files.
RecoveryTools OST File Splitter
Cuts large OST files into smaller parts.
RecoveryTools Upload to Office 365 Tool
Imports PST files into Microsoft 365 mailboxes.
Merge Your NSF Files With the Free Demo
Download the free demo, merge a small sample and buy the license once the output looks right.