
WholeClear OST to NSF Converter Software
Convert Outlook OST files to NSF format in bulk with WholeClear
One time fee273 impressions#1355 of its week1 comment
Comments
>log in to comment- David Johnson· 3mo ago
An old OST file was sitting unused because I needed the data in Lotus Notes format. Finding a way to move those emails without starting over was the main challenge. This converter helped complete the transfer with less manual effort. I checked the converted files afterward, and the mailbox data looked organized. The trial option was useful before going ahead.
Converts Outlook OST files to Lotus Notes NSF format in bulk, preserving emails, contacts, calendars and attachments.
- for
- IT admins and users needing to migrate Outlook data to Lotus Notes without Outlook installed.
- pricing
- freemium · free trial
Key features
- Full mailbox conversion — Exports emails, contacts, calendars, notes, tasks and attachments from OST to NSF.
- Selective folder export — Choose specific folders or items to convert, excluding unnecessary data.
- Preserve hierarchy and metadata — Keeps original folder structure, email headers and attributes intact.
- No size limits — Handles large and multiple OST files without file-size restrictions.
- Preview before conversion — Shows a preview of OST contents so users can verify data prior to export.
- 24-hour online chat support — Provides round-the-clock assistance for installation and usage issues.
Use cases
- Migrate a user's Outlook archive to Lotus Notes after Outlook decommissioning
- Recover data from a corrupted OST file by converting it to NSF
- Bulk convert multiple departmental OST files to NSF for Lotus Notes migration
WholeClear OST to NSF Converter Software FAQ
Do I need Outlook installed to convert OST files?+
No, the converter works without Outlook or Exchange Server installed.
What version of Lotus Notes is required?+
Any version of Lotus Notes (e.g., 10.0, 9.0, 8.5) must be installed on the computer.
Can the tool handle password-protected OST files?+
Yes, it can convert password-protected OST files to NSF.
Is there a limit on the number or size of OST files I can convert?+
There is no file-size limit and you can convert unlimited OST files, though one file is processed at a time.
Does the conversion retain email attachments and metadata?+
All email components, attachments, headers and folder hierarchy are preserved during conversion.
Summarized by DevHunt from wholeclear.com · Sep 28, 2026. Details may change; check the official site.












