Migrating from Lotus Notes to Microsoft 365 requires a careful approach to ensure security and prevent data loss. The most reliable method is to use a professional migration tool.

Here's a secure, point-to-point process using a tool like the eSoftTools NSF to PST Converter, which also supports direct migration to Microsoft 365:

Planning and Backup: Before you begin, it's crucial to have a complete backup of all your NSF files. This is your safety net.

1. Use a Trusted Migration Tool: A dedicated tool is designed to handle the complexities of migration. The eSoftTools software provides a direct option to export NSF files to a Microsoft 365 account.

2. Authentication: The software will require you to enter your Microsoft 365 admin or user credentials to establish a secure connection. This is done over a secure protocol to protect your login information.

3. Selective Migration: A good tool allows you to select which mailboxes or specific data you want to migrate. This is useful for migrating in phases or excluding unnecessary data.

4. Data Mapping: The software will map the NSF file data to the corresponding mailboxes in Microsoft 365, ensuring that emails, calendars, and contacts go to the right place.

5. Validation and Finalization: After the migration, it's important to log in to the Microsoft 365 accounts and verify that all the data has been transferred correctly and is accessible.

Using a professional tool automates this process, minimizes the risk of human error, and ensures that the data integrity is maintained throughout the migration.

Learn more - https://www.esofttools.com/nsf-to-pst-converter.html