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If you ask this same question on the web, then the pro community may encourage you to try the direct option to export the option of Lotus Notes to import information to different file formats. But this can be helpful for people who are already aware of some technicalities of the IBM Notes. Also, this involves irrecoverable damage. Hence it is not recommended for people who are not aware of the back-end technology of Notes.
So the simplest way can be choosing a third-party tool from a reliable brand. One such tool is eSoftTools NSF to PST Converter Tool. This software provides an option to the user to select mailbox items on their choice. This can include contacts, calendars, e-mails, and others. As for conversion, many formats are available for importing Lotus Notes contacts. This involves CSV, PST, MSG, and VCF. Each item is saved with all the attached properties. Like each contact is imported with the first name, last name, work address, work email, gender, image, etc. Just open the tool and select your preferences and proceed with convert button. A free demo edition is also offered to all users with support to all versions of Lotus Notes and Outlook.

Explore more information in this blog: How to import Lotus Notes contacts into Outlook