Is there any reliable solution to import EML messages to Thunderbird? Yes, you can take assistance of EML to Thunderbird Converter to move, shift, migrate all .eml files into Thunderbird mbox format. With the user interface, users can import eml to t bird with all email properties like: To, Cc, Bcc, From, Sent & Received date, Attachments. Users are required to choose some simple steps during conversion process of EML copy to Thunderbird. Birdie Software gives you the facility to try the Free Demo of Birdie EML to MBOX Converter tool, it will import EML messages to Thunderbird with ten emails. For the complete conversion of emails get the licensed version of the software and perform EML Import to Thunderbird in an easygoing method.