If you are searching to convert your Thunderbird to Outlook 365, then you will go with this informative article Migrate From Thunderbird To Outlook 365. In this article, you will get the most secure and reliable manual solution to migrate the process. However, the manual method is too technical. So, additionally, they will also provide a professional solution Thunderbird Backup Tool. The software is a full-fledged utility that saves your Thunderbird mailbox to PST, PDF, EML, MSG, CSV, HTML, DOC, etc. It also offers to safely migrate MBOX to Gmail, Yahoo Mail, Hotmail, IMAP, Office 365, Zoho Mail, etc. Moreover, they allow you to preview your Thunderbird mailbox and the items present in it before migration. Additionally, they are flawlessly compatible with all versions of the Windows operating system. To analyze the performance you can download it.