Post-Quantum Encryption Plans?

Is Maibox.org working on Post-Quantum Encryption? If so, when does the team hope to roll this feature out? As for why it matters: https://tuta.com/blog/world-quantum-day

"While quantum computing has the potential to bring about the next impressive digital revolution, we must not ignore the threat that comes along with it: breaking encryption. Fortunately, quantum-resistant encryption is here to protect us from this threat...In addition to big tech, governments around the world - including the U.S., China, and the EU - are ramping up their R&D budgets for quantum computing, making the probability of a quantum breakthrough in the near future ever more likely...Powerful quantum computers, namely quantum computers with about 20 million physical qubits, will be capable of breaking widely used encryption algorithms such as RSA and ECC, according to the German national cyber security agency BSI. As consequence, once powerful quantum computers exist, currently used asymmetric encryption, for instance, PGP used for email encryption, will not be safe to use anymore. Even worse: powerful adversaries around the world already scoop up encrypted data shared via the internet with the aim of decrypting it once they have access to quantum computers. For this reason, we need quantum-resistant cryptography now – not in five or fifteen years."