You can now resolve your issue by using the
eSoftTools EML Converter software, which allows for the bulk conversion of EML files to PST format for use in Outlook, or enables the direct import of EML emails into cloud-based email services such as Gmail, Yahoo Mail, Office 365, Outlook.com, and others. The software provides a live preview of EML folders and emails, supports all versions of the Windows operating system, and includes a free demo version.
Read More - Import EML files into Thunderbird