If you want to import EML files into Thunderbird, the manual method requires adding each file individually, which can be quite time-consuming. To simplify this process, you can use eSoftTools EML Converter software. This tool allows you to manage bulk EML files and convert them to a Thunderbird-supported format. The software preserves email content, attachments, header details, and folder structure, eliminating the risk of data loss and making the import process smooth.