Use the EML to PST Converter software to Import Thunderbird .EML to Outlook PST format. Migrate Email from Thunderbird to Outlook and get to open your Thunderbird .EML into MS Outlook. Also the software supports to Import Thunderbird .EML to Outlook 2010, 2007, 2003, 2000 and 2005. Or you can say EML files can be converted to both UNICODE PST as well as ANSI code PST. This utility is the best tool for importing Thunderbird .EML to Outlook.