Email built for the people, not the platform
Stone Mail gives you end-to-end encrypted email with zero access to your messages — not by us, not by anyone.
Why Stone Mail
Security without compromise
Every part of Stone Mail is designed around one principle: your email belongs to you.
End-to-end encryption
Messages are encrypted before they leave your device. Only the intended recipient can read them — not even we can.
Zero-knowledge architecture
We store no metadata about who you email or when. Your communication patterns are your own business.
No ads, ever
We are funded by subscriptions, not advertising. We have no incentive to read, analyse or monetise your email.
Open standard protocols
Built on open cryptographic standards. No proprietary lock-in — your keys remain yours if you ever leave.
Custom domains
Bring your own domain or choose from ours. You@yourcompany.com — fully encrypted, fully private.
Spam & phishing protection
Advanced filtering that happens client-side, so your inbox stays clean without your data touching our servers.
How it works
Encrypted at rest and in transit
From the moment you hit send, your message is encrypted using your recipient's public key. Only their private key — which never leaves their device — can decrypt it.
- ✓ AES-256 symmetric encryption for message bodies
- ✓ RSA-4096 or Curve25519 key pairs per account
- ✓ TLS 1.3 for all data in transit
- ✓ Forward secrecy — compromising one key can't unlock past messages
- ✓ Servers located in privacy-respecting jurisdictions
Ready for email you can trust?
Stone Mail is currently in private access. Join the waitlist and we'll let you know when your spot is ready.
Join the waitlist