Security & Privacy
Built from the ground up with security and privacy as the foundation
Encryption Architecture
Your Device
Client-side encryption with your private keys
Our Servers
Zero-access encrypted storage in Switzerland
Important: All encryption happens on your device before data leaves. We never have access to your unencrypted messages or private keys.
Security Features
End-to-End Encryption
Messages are encrypted on your device using AES-256 before transmission. Only you and your recipient hold the decryption keys.
Zero-Access Architecture
We cannot access your data even if legally compelled. All encryption happens client-side with keys we never see.
Encrypted Metadata
Subject lines, sender information, and timestamps are encrypted to protect communication patterns.
No Tracking
We don't track your activity, log IP addresses, or use analytics. Your privacy is absolute.
Swiss Hosting
Servers located in Switzerland under the world's strongest privacy laws, outside EU and US jurisdiction.
Threat Protection
Built-in phishing detection, malware scanning, and suspicious activity monitoring.
Compliance & Certifications
SipherMail meets and exceeds industry security standards and regulatory requirements
Transparency Report
We publish regular transparency reports detailing any legal requests we receive. To date, we have received zero requests for user data that we could fulfill due to our zero-access architecture.