Use hCaptcha or Geetest instead of ReCAPTCHA
The CAPTCHA on the verification page uses Google's captcha service, which is absolutely terrible for privacy reasons. Please consider some alternatives such as hCaptcha or Geetest. (In addition, with hCaptcha you get paid for every time a user completes a captcha, instead of that labour going towards trainging Google's AI).
Joan Romero commented
Absolutely agree with this request and was personally very surprised when I saw the Google captcha being used by ProtonMail 🤦🏻♂️