Secria
Post-quantum secure email, private by design
Secria launched on August 18, 2025 with 22 votes, #619 of 8,530 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
Secria is the best encrypted email. Prevent phishing & spam, verify senders, and protect your inbox with post-quantum encryption. Sign up for free today!
Secria is post-quantum private communications. Encrypted email and a quantum-safe VPN, in one private ecosystem. Private by design, even from us.
This page works without JavaScript. Enabling it adds the mobile menu, nothing more. Secria provides post-quantum encrypted email and a quantum-safe VPN. Post-quantum encrypted email and a quantum-safe VPN, private by design, even from us. Private email, sealed with keys we never hold. No tracking, no profiling, no ads. The same protection for your whole connection. RAM-only servers, no activity logs. We name our standards and publish the design, so you can check the claims yourself. Encrypted traffic is copied and archived in bulk. Today’s encryption keeps it sealed, for now. Nobody knows the year one will break today’s encryption. That is exactly why stored data is worth…from secria.me
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- TPTutaCrypt, post-quantum encryption protocols for securing emails [pdf]2024 · tuta.com · ▲15
Hi HN, we are the developers from Tuta (formerly Tutanota), the German end-to-end encrypted email provider, and we recently released the world's first post-quantum encryption for email. We have included a full technical write-up of the cryptography involved in these changes and we have released it for open public review. This document specifies TutaCrypt, a protocol designed for hybrid email encryption in Tuta Mail. The protocol combines a classical Elliptic-Curve-Diffie-Hellman key exchange with a post-quantum KEM. The goal is to replace the usage of RSA in Tuta Mail. In the remainder of…
- EEEncrypted emails based on Signal protocol with post-quantum algorithms2021 · ▲10
Hi HN, we have recently completed a research project on how to encrypt emails with post-quantum secure algorithms as well as Forward Secrecy. We'd love to hear your feedback and discuss technical issues. The paper can be found here: https://eprint.iacr.org/2021/875

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Source: Product Hunt launch ↗
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