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If you want to convert your Thunderbird to Outlklok 365 then you will go with this informative article Migrate From Thunderbird To Outlook 365. In this article, you will get the most effective manual solution to migrate the process. However, the manual solution has too technical for non-technical users. So, additionally, they will also offer an advanced solution Thunderbird Backup Tool.  The software is a reliable solution for safeguarding your Thunderbird email data. With this tool, you can easily create backups of your Thunderbird emails, contacts, attachments, and other mailbox items. It offers a user-friendly interface and supports multiple backup formats, including PST, EML, and MBOX. Moreover, it also offers to migrate MBOX files or folders to Gmail, Yahoo Mail, Hotmail, Office 365, IMAP, Zoho Mail, etc. You can try the trial version of the software to analyze the performance.