Migrating Thunderbird emails to Office 365 is quiet simple with the EmailsGuru Thunderbird Converter. It offers a direct and secure way to transfer your Thunderbird mailbox to your Office 365 account. To begin the migration, first launch the software and allow it to automatically detect your Thunderbird profile. Next, select the folders you want to migrate and choose Office 365 as the saving option. Enter your Office 365 login credentials and click the "Convert" button. The tool will then initiate the migration process, transferring all selected emails along with attachments, metadata, and folder structure. Thanks to its user-friendly interface and powerful features, it is the ideal solution to migrate Thunderbird to Office 365.