You can use Recoveryfix
Microsoft 365 Backup software to securely back up your Office 365 account data. This software offers a reliable solution for backing up Office 365 mailboxes into various file formats, including PST, MBOX, EML, EMLX, MSG, and more, directly to your local system. It also features an intuitive user interface and supports all the latest versions of Windows OS, making it user-friendly and convenient.