How to move Thunderbird to Office 365 in MacOS? Download the latest Mac Thunderbird Converter tool, it helps you to convert or move Thunderbird to Office 365 in MacOS all along with complete Thunderbird details such as; emails, contacts and calendar items. Software supports to move Thunderbird to Office 365 in MacOS in batch mode to save users valuable time and effort, download the Mac Thunderbird Converter free tool to test its working efficiency and it supports to move 20+ files at a time.