https://tuta.com/blog/post-quantum-cryptography
"Just in time for 10 years of Tuta/Tutanota, we are launching the most significant security upgrade of Tuta Mail with TutaCrypt. This groundbreaking post-quantum encryption protocol will secure emails with a hybrid protocol combining state-of-the-art quantum-safe algorithms with traditional algorithms (AES/RSA) making Tuta Mail the world's first email provider that can protect emails from quantum computer attacks."

"We are excited to announce that with this release we are enabling quantum-safe encryption by default for all new Tuta Mail accounts. We are now replacing the classic asymmetric cryptography (RSA-2048) with our quantum-safe hybrid encryption protocol called TutaCrypt: It combines a post-quantum Key Encapsulation Mechanism (CRYSTALS-Kyber) and an Elliptic-Curve-Diffie-Hellmann key exchange (x25519)."
#privacy