If you are looking for the best tool to import EML files to GoDaddy Email, you can try the MacSonik EML Converter Tool, which offers multiple functionalities in a single platform. This software can remove duplicate emails, as having too many duplicates in an EML file can make it oversized and bulky. It allows you to remove duplicates based on Mail, Body, From, and To fields. After conversion, the resultant file will be free of duplicate emails.
Also Read: https://www.macsonik.com/eml-converter/