A lot of people talking about dumping Proton right now are misunderstanding what actually happened.
Feds were able to coerce the Swiss government to coerce Proton to hand over whatever data they had on an anonymous Stop Cop City email address, that was being investigated for terrorism.
That metadata included credit card details information for the account, which is very difficult to anonymize.
Proton offers cash payments to work around this obvious security flaw.
If you must pay for a Proton account for a radical project, pay with cash (you can mail it) or washed crypto (Monero -> Bitcoin).
All credit card payments are traceable, even to a privacy-focused company.
Your security model should not rely on a business to fight the state on your behalf.
Your email or VPN provider is not going to risk prison time for your $5/mo. It's just not going to happen, at least for anything commercial. Tuta and every other email privacy-focused email company will comply with court orders.
Trying to find the perfect email provider is a fool's errand. It doesn't exist.
You can however anonymize your useage of privacy friendly services like Proton, Tuta, or Mailbox by not entering your credit card number, phone number, name, personal email, or IP to that account.