SysTools Outlook OST to NSF Converter

Tool to Recover & Convert Corrupt / Orphaned OST Files Emails Into NSF File format

  • Save OST file emails with attachments into Lotus Notes NSF format
  • Batch Export multiple mailboxes of Outlook OST files into NSF file
  • Maintain folder hierarchy while saving emails from OST into NSF
  • No File Size Limitation: Convert any size of OST file into NSF format
  • Allows to scan & preview all OST file items along with attachments
  • MS Outlook 2010 & Lotus Notes version 9.0 or below should be installed

List of Key Features of SysTools OST to NSF Converter

convert ost to nsf

Convert OST to NSF

It is possible to convert all emails from MS Outlook OST files into NSF format. The software keeps Meta data intact and retains the attachments embedded within converted emails. It allows converting emails from inbox, sent items, drafts, deleted items & other customized folders.


scan and preview

Scan & preview Items

The Outlook OST to NSF Converter performs a quick scanning of OST file and loads all mailboxes present it onto the software panel. Further you can click on any folder and preview its items. The software will also show you the preview of email attachments.


export selective folders

Export Selective Folders

Though OST to NSF converter supports batch migration of emails from OST file into Lotus Notes, it is possible to convert only required items. The software allows you to check or uncheck items / folders that are not desired for export or conversion by you.


sort items with attributes

Sort Items with Attributes

The software scans and lists all items present within the selected OST mailbox. You can view emails, contacts, calendars, tasks, etc.; along with their associated properties. These may include: from, subject, received time, size of email, contact full name, company name etc. Also, you can sort the list of items by rearranging these attributes in a desired order.


easy to use interface

Easy to Use Interface

The software has a self-explanatory user interface allowing any one to use the tool easily. All the features and options are integrated on a single panel which makes the software less complicated and technical. The program is designed using algorithms that make it easily usable by a technical as well as non-technical user.


save at desirable location

Save at Desirable Location

Once you start the conversion of emails from OST mailboxes to NSF, software prompts you to choose a desired save location for the same. You can select any location of your machine to save the NSF file else if required; you can also create a New Folder directly from the browse window of software and save the file into it.


Outlook OST to NSF Converter Tool Screenshots

ost to nsf converter
Step 1: Outlook OST to NSF Converter
Scan Outlook OST File
Step 2: Scan Outlook OST File
Preview OST file Items
Step 3: Preview OST file Items
Save OST File as NSF
Step 4: Export OST to NSF

Watch Live Video of Outlook OST to NSF Converter

Download Outlook OST to NSF Converter
outlook ost to nsf converter box

Size: 3.0 MB Version: 1.0

Trial Limitations

Demo version of Outlook OST to NSF Converter preview recovered OST data.

Download OST to NSF Converter

Installation Uninstallation EULA

System Specifications

System Specifications
  • Hard Disk Space: 5 MB of free hard disk space

Application Pre-Requisites

  • Lotus Notes Client should be installed and configured properly.
  • Lotus Notes Client should be disconnected from Domino server.
  • If you are using Window 8.1/8/7 or Vista, then please launch the tool as "Run as Administrator".

Supported Editions

  • Microsoft Windows – 2000, 2003, 2008, XP, Vista, or Windows 7/8/8.1, 2008/2012 (32-bit & 64-bit)
Frequently Asked Question
What is the maximum size of OST file accepted by the tool for conversion?

This software can convert any size of OST file successfully into NSF format as it is programmed with latest technology. There is no limitation on the size of OST file imposed by the tool for conversion.

Do I need to install MS Outlook before using this software?

Yes, MS Outlook should be installed and configured properly before the software is used. It should be configured with any valid or dummy POP3 profile.

How many OST files can this tool convert at once?

Only one OST file can be converted at a time using this software.

Can I install this software on a Windows 8.1 PC?

Yes, this software can be installed on any version of Windows OS including 8 & 8.1.

Does the software also convert email attachments from OST to NSF?

Yes, this software converts emails along with their attachments from OST to NSF without any issues surfaced.

Is Lotus Notes client installation necessary for conversion?

Yes, Lotus Notes email client application should be installed on conversion machine in order to perform a successful conversion.

What version of MS Outlook & Lotus Notes does the software support?

You may install any version of Outlook (32-bit) and Lotus Notes v9.0 or below on the conversion machine.

Can I perform selective email conversion from OST file?

Yes, you can convert emails from selective or all OST file folders at one go into NSF file successfully.

What our Clients Says

A user friendly interface is all that a novice user like me desires for because technology is obvious when software applications are concerned. But to get easily operable tool was a tough task. However, OST to NSF Converter made it simpler and affordable too.

Joanna Kael, Greece

There would be a large number of users like me around the world looking for a tool that could convert an offline data file into IBM Notes format but failed to do so due to variation in formatting. Thanks to the developers of Outlook OST to NSF Converter for helping me.

Pauline Pettigrew, France
Outlook OST to NSF Converter Order Now

Get an Overview of OST to NSF Converter Features - FREE and Licensed Version


Features FREE Version FULL Version
Add Outlook OST File
Sort Items with Attribute
No File Size Limitation
Supported Windows 8 & All Other Previous Versions
Export Selective Folders
Export OST to NSF
Cost FREE $49