[BobFromEnzyte]

You can create anonymous accounts with Tuta through Tor and they don't ask for a phone number or contact email address. They even made a tutorial video on YouTube a few weeks ago for how to do it: https://youtu.be/oXv3llPIfvo

If you continued using the account only through Tor, there wouldn't be any traceable info.

[sintax]

I'm not a lawyer, but doesn't GDPR and No-Log contradict each other.

[fullspectrumdev]

Nope. What’s funny is it’s actually easier to be GDPR compliant if you keep no logs.