If you're looking for a simple and effective way to import MBOX files to Office 365, MailConverterTools MBOX Converter is the ideal solution. This tool preserves all email items and allows users to access data in Outlook. It makes it easy to import MBOX files to Office 365, as well as to other email clients like Thunderbird, iCloud, Gmail, Opera Mail, Yahoo Mail, and more. Additionally, the software works with all versions of Windows and Mac OS.