I second the support for Proton. Proton, however, is not EU-based (not that it matters in this context). It's Swiss. Switzerland, like Norway and the UK, is not part of the EU.
Yes, my mistake I was thinking Europe based (but having said that Swiss have stricter privacy laws than EUs GDPR and is a considered adequate for data transfer).
Downsides are you need to use proton client or web UI.
The proton suite now also features other useful (and secure) apps like Drive, Password manager, etc. I’m not using those though.