Hey, when I switched from Gmail to EML at work a few months ago, I had the same thing. It was much more difficult for me than I was expecting, but I eventually found a solution that was excellent. Using
WholeClear MBOX to EML Converter made the entire process really simple. I took the following action: I first saved my Gmail information as an MBOX file using Google Takeout (go to takeout.google.com, select Mail, then download). I then used MBOX to EML Converter to import the MBOX file. Before converting all of my emails, the tool provided me with a sample, which was a terrific method to check sure everything was in order. Click "Convert," select "EML" as the format, and that was it.