Yes, you can open EML file to Gmail with the ToolsBaer EML to Gmail Converter Tool. This software makes it easy to convert emails from EML files to Gmail. This EML format supports a variety of email clients, like Thunderbird, WLM, Entourage, eM Client, SeaMonkey, and others. The operating systems Windows 10, 8.1, 8, 7, Vista, and XP are all compatible. The utility's demo version can be downloaded for free.