MailsDaddy Thunderbird to Outlook Converter tool is the most effective and reliable solution to transfer data from Thunderbird to PST, EML, Office 365, MSG etc. in a few simple click. The application is built on simple GUI interface that helps user to manage internal and external folder hierarchy, rich text formatting, header, etc. in a resultant PST file. You can also start migration with the free demo and test the software efficiency by moving few items from each folder.