For Thunderbird to Outlook transfer, I suggest reading this article. It has highlighted the process of transferring emails from Thunderbird to Outlook and the factors that contribute to effective email management, which can enhance the performance of email systems. 
 

If you want to move Thunderbird to Outlook 365, you will go with this informative Tool Move From Thunderbird To Outlook 365. Here you will find the most efficient and effective manual method to migrate Thunderbird to Outlook 365. However, the manual method is also technically done let's see. So, in that case, you can opt for the professional option Softaken Thunderbird to Outlook Converter Tool. It is the most secure and powerful tool to protect your Thunderbird mailbox in PST, PDF, EML, EMLX, MSG, CSV,  HTML etc. The tool is easy to use and requires no technical knowledge to use. Also, Thunderbird emails can be easily and securely migrated to Gmail, Yahoo Mail, IMAP, Hotmail, iCloud, Office 365, AOL and many other email clients and clouds in addition it is compatible with all versions of the Windows operating system for business analysis a You can try a trial version of the software.