Growth · alternatives · 2026
24 alternatives to Secria
Post-quantum secure email, private by design
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
Get free email forwarding for custom domains. Send & receive as [email protected] with unlimited aliases, 10GB storage, IMAP/POP3/SMTP & 100% open-source security. Trusted by 500K+ users. Setup in 2 minutes.
2023 · forwardemail.net · its alternatives →
- 2
SecurSSH▲57SSH access for developers. Secure, European, done right.
May 2026 · securssh.com · its alternatives →
- 3
ProtonMail▲199End-to-end encrypted email - now on iOS & Android
2016 · proton.me · its alternatives →
- 4
Secur3▲77First decentralized 2FA solution for self-custodial wallets
2022 · secur3.xyz · its alternatives →
- 5TP
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…
2024 · tuta.com · its alternatives →
- 6EE
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
2021 · its alternatives →
- 7
ProtonMail▲144Encrypted email, made simple. Now open to everybody.
2015 · proton.me · its alternatives →
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Your email, your server, your keys so you're not locked out
Aug 2026 · github.com · its alternatives →
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Proton Mail is the world’s largest secure email service with over 100 million users. Available on Web, iOS, Android, and desktop. Protected by Swiss privacy law.
2014 · protonmail.ch · its alternatives →
- 14
Keep your Gmail inbox focused on people you know
2022 · keepknown.com · its alternatives →
- 15
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Permissioned and auditable secure file and document sharing
2023 · sendsecurely.io · its alternatives →
- 17
StealthMail▲67Best-in-class secure email channel solutions 📧🔒
2018 · stealthmail.com · its alternatives →
- 18
- 19
Encrypted e-mail exchanges, have documents signed as well
2020 · secure-exchanges.com · its alternatives →
- 20
Vaulty▲90Ridiculously easy end-to-end encrypted data sharing
2023 · vaulty.tools · its alternatives →
- 21
Never worry about crypto seed phrases again
2022 · myguardian.network · its alternatives →
- 22
Tuta guarantees your data stays private for free & without ads. Quantum-resistant encryption makes Tuta the best secure technology solution to protect your privacy.
2014 · tutanota.com · its alternatives →
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Guardian Digital makes email safe for business
2021 · guardiandigital.com · its alternatives →
Also compare
- Forward Email – Open-Source Quantum Safe Encrypted Email Service alternatives
- SecurSSH alternatives
- ProtonMail alternatives
- Secur3 alternatives
- TutaCrypt, post-quantum encryption protocols for securing emails [pdf] alternatives
- Encrypted emails based on Signal protocol with post-quantum algorithms alternatives
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →