Post-Quantum Secure Email, Private by Design
End-to-end encrypted email, with zero-access encryption at rest. Your messages stay private, even from us.
Harvest now, decrypt later
Your inbox is a target that pays off later.
Encrypted email captured today can be stored for years. When quantum computers mature, the encryption protecting classic email breaks, and every message harvested along the way becomes readable. Secria closes that window before it opens.
Messages are archived
Encrypted email is intercepted and stored in bulk, waiting for a key that can open it.
Quantum breaks the lock
A quantum computer cracks the RSA and elliptic-curve keys that secure ordinary email.
Nothing to open
Every message is sealed with ML-KEM-1024 hybrid encryption today, so there is nothing left to unlock later.
Features
Built for privacy and security
Every feature is designed with your privacy in mind, using proven cryptographic standards.
End-to-End Encryption
Your emails are encrypted before they leave your device and can only be decrypted by the intended recipient.
Zero-Access Encryption
Stored mail is sealed with keys we never hold, so we cannot produce its contents.
No Tracking
Block tracking pixels and prevent senders from knowing when, where, and how you read emails.
Alias Protection
Create secure email aliases to protect your identity and stop spam at the source.
Secria Sentinel
Plus & Pro PlansAdvanced breach monitoring service that proactively protects your email security with multi-source detection, smart risk assessment, and instant notifications about potential data breaches affecting your account.✓ No configuration required - works automatically for Plus and Pro users
Simple, transparent pricing
Choose the plan that works for you
Just want to try it?
The free plan gives you 1 GB, 2 aliases, 3 folders, and the same encryption as every paid plan.
No card required
Secria Pro
The full mailbox and the VPN, in one account.
47% less than buying both apart
$191.76 for 2 years · 8 months free
You save $167.76 over 2 years
- Full Secria VPN on 5 devices
- Everything in Mail Plus
- 500 GB storage, 33× Mail Plus
- Unlimited email aliases
- 10 custom domains
- Advanced spam filters, security analytics, bulk actions
After the first 2 years it renews yearly at $119. Turn renewal off any time in your account.
Secria Mail Plus
The mailbox on its own.
$78.96 for 2 years · 8 months free
- Post-quantum encryption, always on
- 15 GB storage, 10 aliases, 3 domains
- Whitelist and blacklist
- 3 email signatures
- Import your old mail
- Unlimited folders and labels
- Secria Sentinel breach monitoring
- The VPN is not included
After the first 2 years it renews yearly at $49. Turn renewal off any time in your account.
Secria VPN Plus
The VPN on its own.
$155.76 for 2 years · 8 months free
Add the 500 GB mailbox for $1.50/mo more with Pro
- Post-quantum at every layer
- Lightning fast WireGuard speeds
- RAM-only servers, no activity logs
- Multi-hop routing and private DNS
- Servers on all continents
- 5 devices at once
- The mailbox is not included
After the first 2 years it renews yearly at $99. Turn renewal off any time in your account.
All plans include end-to-end encryption between Secria users, zero-access encryption at rest, and secure email delivery.
Post-quantum encryption and contact verification included with all plans.
What you see is what you are charged.
Security
Zero trust post-quantum encryption
Zero-access encryption with hybrid cryptographic protection using ML-KEM-1024 and defense-in-depth security model.
ML-KEM-1024 (Post-Quantum)
NIST-standardized post-quantum cryptography generating 1,568-byte ciphertexts, resistant to quantum computer attacks and "harvest now, decrypt later" threats.
Hybrid Key Exchange
Combines X25519 ECDH with ML-KEM-1024 using HKDF-SHA256 key derivation for maximum security, defense-in-depth, and future-proofing against all attack vectors.
Zero-Access Storage
All cryptographic operations occur in your browser using WebCrypto API. We cannot decrypt your stored messages.
Perfect Forward Secrecy
Each email uses unique ephemeral keys with salt-based derivation. Compromising one message key doesn't affect your other communications.
Argon2id Authentication
Memory-hard password hashing with 65,536 KB (64MB) memory cost, 3 time iterations, preventing brute force attacks and rainbow table exploits.
Transport Layer Security
TLS 1.2+ with ECDHE cipher suites, DKIM email authentication, and STARTTLS/implicit TLS support across all SMTP ports.
Your communications are quantum-safe
Two-stage hybrid post-quantum encryption with zero-access encryption at rest
Symmetric encryption
Post-quantum primary
Defense in depth
Secure key expansion
Quantum-safe key agreement
Per-message ephemeral keys
64MB memory cost
Encrypted at rest
DKIM authenticated
Zero-access encryption: your private keys never leave your device unencrypted, and stored mail is sealed with keys we never hold.
Download
Take Secria everywhere
Access your encrypted inbox on any device. Available on iOS, Android, and the web.
Prefer not to use the Play Store? Download the APK and install it directly on your Android device.