Transparent Pricing
Simple, Predictable Pricing for Sovereign Email
No advertising, no data harvesting, and no hidden telemetry. Start free forever or upgrade for custom domain links and expanded encrypted vaults.
Free
Essential zero-knowledge encrypted email for everyday personal privacy.
$0/ month forever
- 10 GB Encrypted Email Storage
- 3 @natrium.sh Addresses
- 25 MB Encrypted Attachments
- 2 Account Links & Identity Switching
- Zero Behavioral Tracking & Telemetry
- Hardware Passkeys (FIDO2 / WebAuthn)
Recommended
Pro
Expanded storage, custom domain mapping, and priority MTA delivery for power users.
$3.99/ month, billed annually
- 25 GB Encrypted Email Storage
- 5 @natrium.sh Addresses
- Custom Domain Mapping & DNS Verification
- 100 MB Encrypted Attachments
- 5 Account Links & Identity Switching
- Priority Outbound Direct-MX MTA Relay
- Hardware Passkeys & Biometric Auth
Enterprise
Dedicated cryptographic relays, custom compliance, and team multi-identity management.
$11.99/ user / month
- 50 GB Dedicated Storage per user
- Unlimited Custom Domain Links
- 250 MB Encrypted Attachment Limits
- Unlimited Account Links & Switching
- Real-Time SIEM Audit Logging
- Dedicated Isolated Outbound MTA IP
- 24/7 Security Escalation Response