Launched January 6, 2026
Softaken OST to NSF Converter

Softaken OST to NSF Converter

Most endowed solution for converting OST files into Lotus Notes NSF files

One time feeEmails197 impressions#838 of its week

Softaken OST to NSF Converter Software is the most endowed & exclusive solution for converting OST files into Lotus Notes NSF files. Perform speedy OST to Notes NSF Conversion with full accuracy. This expert tool is capable of preserving the folder structures of the OST mailbox file. Transfer any size of OST database to a Lotus Notes NSF file hassle-free. The conversion requires the installation of Lotus Notes on your system. Convert selective folders from the OST mailbox into HCL Notes respectively. Its simple user interface makes it easy to handle the software smoothly without technical skills. Its preview feature is available in multiple modes, horizontal or vertical, as per the user's need; they can check the email data. It safely retains the OST emails' meta properties conversion process. It also provides a demo facility to convert a few items from OST to NSF file at of cost. Simply download and install on any version of Windows OS.

Converts Outlook OST files to Lotus Notes NSF files on Windows.

for
IT admins and users needing to migrate Outlook offline mailboxes to Lotus Notes.
pricing
freemium · free trial
works withWindows OSOutlook OST files

Key features

8 features of Softaken OST to NSF Converter
  • Batch migration — Convert multiple OST files at once regardless of Outlook version.
  • Folder hierarchy preservation — Keeps original folder structure and email attributes in the NSF output.
  • ANSI & UNICODE support — Handles both ANSI and UNICODE OST file types.
  • Date range & selective export — Filter items by date or folder before exporting.
  • Preview pane — View mailbox items in a left-pane preview before conversion.
  • Contact & calendar export — Exports contacts to VCF/CSV and calendars to ICS alongside NSF.
  • No Outlook required — Works with offline OST files without configuring Outlook.
  • Windows only — Runs on Windows 7/8/10/11 with minimal system requirements.

Use cases

  • Migrate an employee’s Outlook archive to Lotus Notes after they leave the company.
  • Batch convert several departmental OST files to NSF for a Lotus Notes migration project.
  • Extract contacts and calendar events from OST files into VCF/CSV and ICS for import into Notes.
  • Preview and selectively export only recent emails from a large OST mailbox.

Softaken OST to NSF Converter FAQ

Do I need Outlook installed to convert OST to NSF?+

No, the tool works with offline OST files and does not require Outlook configuration.

What does the demo version allow?+

The demo is free and lets you export up to 10 emails; all other features are identical to the full version.

Are contacts and calendar items converted?+

Yes, address book entries can be exported to VCF/CSV and Outlook calendars are saved as ICS files.

Is there a file-size limit for conversion?+

The product page does not specify a size limit; users have reported converting large OST files without issues.

Which Windows versions are supported?+

Windows 7, 8, 8.1, 10, 11 and other Windows desktop versions.

Will the original email formatting and attachments be retained?+

The converter preserves email properties, formatting, and attachments in the resulting NSF file.

Summarized by DevHunt from softaken.com · Sep 28, 2026. Details may change; check the official site.