Convert NSF to PST

Convert NSF to PST

The IBM Notes Exporter (INE) software is an IBM Notes application used by end users to convert their IBM Notes mail (archive) files to PST files.

INE support the conversion of Notes emails, Notes calendar entries (only past entries) and Notes contacts to PST files.

INE supports all recent Notes client versions (7 ,8, 9, 10, and 11) on Windows, Linux and Mac OS end users computers.



End user driven export NSF to PST

You can deploy INE to the end users Notes client by sending the end users a notes:// app link via email to INE on the Domino server or deploy INE via a Notes desktop policy.

With INE the end user will be able to carry out the following NSF to PST migrations without direct involvement of central IT administration.

  • Convert IBM Notes mail archives stored on the end user computer to PST files to be stored on the end user PC
  • Convert Domino server based production mail files or local production mail file replicas to PST files to be stored on the end user PC
  • INE supports delta migration approach. This means the end user can start the conversion a second time (a week later for example) to only add the new emails in Notes to the previously created PST file. Obviously this delta migration will go much faster compared with the initial conversion of NSF to PST files.

Subsequently, INE offers an IBM Domino server based web page which can be used by the end users to upload the PST files to their Outlook on O365 or Exchange on premises. The PST files will be stored on a Domino server which then carries out the uploading of these PST files to O365 or Exchange.

Fully end user driven, simply deploy INE to the Domino server and send end users the Notes app link for independent conversions of NSF to PST


Feature list INE

INE is a versatile piece of IBM Notes mail to Outlook migration software. Please find below a list of key features INE offers.

  • Conversion of local and Domino server based mail files to PST
  • Conversion is executed in Notes client background, so a user can use the Notes client for other duties simultaneously
  • Conversion of Notes emails, calendar (only historical), tasks, contacts and journal to PST
  • Conversion of Notes names (Marten Vosmer/Lialis) to internet email addresses (
  • Delta migrations, only of new emails added to the files to PST


Interested to learn more? Please hit this contact button.

We hope to speak to you soon. Thanks Lialis.


Convert NSF to PST end user manual

INE can be used by Notes clients on Windows, Linux and Mac computers.
The INE manual listed below is from a Notes R11 client on Windows 10.

To set up the convert NSF to PST software you will receive an e-mail with instructions and a link (for example notes://app1server/INE.nsf) to the INE Notes application.

When you click this link you will get a browser message as shown below. You can click ‘Open’.

nsf to pst notes app link

Your Notes client will start, or if it’s already running,  it will open the INE Notes application to convert Lotus Notes to PST.

The first step is to update the Notes client Java memory settings for the Lotus Notes to PST convertor.
This is done to improve the Notes email conversion to PST (JavaMaxHeapSize is added to Notes.ini).
You might get the following message. If you don’t get this message your Notes client Java memory settings are already fine.

INE will open with a message asking to reboot your Notes client.
You cannot use INE to convert NSF to PST until you have rebooted for the Java memory change to be effective.

After rebooting your Notes client please find INE stored on local. This means it’s stored on your PC.


Setting up the conversion for convert NSF to PST

When you open INE you will see the following screen.

Click the button ‘Find My Databases’ in order to find the Notes mail archives on your PC.

INE will find all Notes mail archives stored in the Notes client. Normally, these files are stored in the Data folder of the Notes client (for example C:\Notes\Data).

convert lotus notes to pst main screen

If a Notes mail file is encrypted and it cannot be opened, this is highlighted in red.

If this is the case, it means the Notes id file used to create this encrypted Notes mail file is currently not in use . The only way to gain access to this encrypted mail file is to find the old Notes ID file that is used to create this mail archive. When you find this old ID file switch to it in the Notes client and try to decrypt the Notes mail archive.

If you do not see all your Notes archives listed, you may use the ‘Select Databases’ browse button to find archives on other file locations like; USB drive, other places on your laptop or even on a network drive.

The software also allows you to export the local replica of your production mail (replicating with the Domino server based mail file) to PST.

You have the option to remove files from the list of Notes mail files to be converted, simply by clicking ‘remove selected’.
Tip: keep the ctrl key selected to select multiple files


The next step in the process is to set the PST password the PST files will be protected with.

Subsequently, choose the location (‘export path’), where you want to store the PST files. Do not choose your Notes client folder because the Notes client might be deleted later on, deleting your PST files as well.

When you are happy with the list of files to be converted to PST files, please click the ‘Export’ button to start the conversion.

You will see a Notes client background agent doing all the work.  It is safe to continue using your IBM Notes client for other things. The software provides a progress indicator to track completion.

INE will display the convert NSF to PST progress log in the bottom Notes client message bar. For example:

Please keep your Notes client running till the conversion has been completed.

You may click the green refresh button to update the completion status.


If you like to check the details of each Notes mail archive conversion to PST, you may click the ‘View Log’ button.


Contacts migration

Besides e-mails INE also migrates your Notes contacts to PST.

Notes contacts are stored in the personal address book on the Notes client (names.nsf). See the following example:

convert nsf to pst notes client contacts

By default the Notes client will list a Synchronize Contacts task in the Notes replicator page.
This task will replicate the Notes client contacts from names.nsf to the end user Domino server based Notes mail file (production mail file).

To migrate the contacts to a PST file please configure INE so it converts your local production mail file replica to PST.
INE will use the route ‘names.nsf > server based mail > local mail replica’ to also convert your contacts to PST.

To view and use the migrated Notes contacts in Outlook please read below the instructions under “Opening the PST files in Outlook”.


The output files

During the NSF to PST export you will see 3 types of export files in the Output folder you have appointed.

nsf to pst output files

This folder contains the emails before they are imported in the PST file and will be removed later on by INE.

The CSV file contains a listing of the emails imported in the PST file.

The PST file is the final output containing the Notes emails.


Opening the PST files in Outlook

To open a PST file in Outlook click in Outlook on ‘File’

Then choose: ‘Open & Export’

The Outlook files folder will be displayed.

Browse to the output folder and choose the PST files that where generated. Then open them in Outlook one by one.

The PST file will be listed in the left pane of Outlook as illustrated below.

In this example, the contacts migrated to Jane A Doe’s PST file will be visible under the contacts tab of Outlook:

To use the contacts that are migrated to PST, you must move the contacts from the PST file to the Outlook client main contacts.
Simply select all contacts and move them to your main contacts.


INE can also be used to import PST into Office 365, contact Lialis for more information.


Note: Suppose you have migrated multiple Notes mail archives with contacts listed in them. When you add these PST files generated from the Notes archives to Outlook, you will see multiple lists of contacts (see image below). It’s possible the contacts in these PST files are different due to the moment in time the contacts where actually created in the Notes mail files.

To solve this, simply drag the contacts from each PST file to the main contacts list and Outlook will show you a de-duplication option. Great!


Problems and trouble shooting NSF to PST conversion by INE

If you select a (Notes) file that is not a Notes mail file you will get the following error message:

If you select a file that is not a Notes database you will get this error message:

Please keep an eye on the progress indicator in the right bottom corner of your Notes client.

nsf to pst notes client background

When this indicator is not present it means that the conversion has completed, or that the conversion has stopped.

Click the refresh button to see the log. If you see below message boxed in red, it is advisable to check what’s going on by clicking the ‘View Log’ link.

Very large emails might not be converted. You may click the boxed link in below screenshot to open the Notes email and decide if you want to store the Notes mail attachments manually on your disk.

nsf to pst log

If INE finds encrypted emails which it cannot open, it will store these emails in the Notes db folder _Encrypted. Unfortunately, we cannot offer a way to open these emails.

If you have restarted your Notes client while the conversion to PST was in progress, no worries. Simply re-open INE and you will get below screen. Please note that the conversion has to be completed before you may change the settings (that’s why the buttons ‘Find my Database’ and so on, are grey and disabled). So, simply click ‘Export’ to resume and complete the conversion.

nsf to pst main screen

Suppose you have selected 2 archives with the same file name but that will be stored in different folders. For example:

In this case, INE will create two pst files for both Notes mail files. However, the second PST file will have the file name addition -2. See image below:


Delta migrations for convert NSF to PST

Suppose you have exported the Mail files to PST yesterday. If you carry out the same migration again today it will not migrate new emails to the PST files because all emails are already present in the PST files. That’s why you will see Import 0 files. See the following example:

You might have added a local mail file replica to the list of mail files to be exported. If you pull new emails from the Domino server via the Notes client replication task, only the new emails will be added to the PST file. Then you will see a log like this:

The INE log is listed below for this server mail file that replicates to local.

Stopping the conversion

You may stop the conversion at any time. For example, if you need to carry your laptop to another location, or reboot your computer.

When you want to continue the conversion at a later stage, simply open INE on local and the conversion pane will start. Then click the export button to restart the export.

The log pane will be refreshed. INE will automatically check if all Notes emails are exported, if so, it will export 0 emails to PST.

Obviously, it will continue the export of the Notes file which you abrupted.

To gain access to the old log files please click the ‘View Logs’ button:

Reset the conversion

If you want to start from scratch and delete the PSTs, please click ‘clear psts’. You will get a warning. Once you click ‘Yes’ the created PSTs will be removed.