For Lotus Notes to Office 365 Migration you can go for Recoveryfix for MBOX to PST. It can easily convert multiple MBOX files to PST, EML, MSG, and Office 365 without data loss. The software performs accurate and secure MBOX data migration from 20 email clients, including Apple Mail, Thunderbird, Zoho Mail, Eudora, WebMail, etc.
read this blog -> https://www.recoveryfix.com/blog/lotus-notes-to-ms-outlook-email-conversion-made-easy/