If you are looking to transfer Thunderbird to Outlook 365 then you will go with this informative article Migrate From Thunderbird To Outlook 365
. Here you will get the most reliable manual method to accomplish the process. However, the manual method is a high chance of risk. Therefore, they will also introduce an advance solution Mozilla Thunderbird Backup Tool.
The software is a full-fledged utility that save and migrate your Thunderbird to different file folders and email clients. It is a simple user-friendly and does not require to technical knowledge to use. They are flawless compatible with all versions of the Windows operating system. You can try the ful- featured trial version of the software to analyze the performance.