Note that even in those cases when additional verification is requested, the email addresses are not tied to your account - we only save a cryptographic hash of

Note that even in those cases when additional verification is requested, the email addresses are not tied to your account - we only save a cryptographic hash of your email. Due to the hash functions being one-way, we cannot derive it back from the hash: https://proton.me/support/human-verification https://proton.me/support/human-verification