Skip to content
SPECIFICTION
Get listed

c.Email

c.email

Free plan Browser extension
Visit c.email
Spec score 8.7 #4 of 31 in Email Encryption Software

Spec sheet

Free plan
YesRead 20 Sep 2026 · c.email
Email integrations
c.Email connects with Gmail and Outlook addresses.Read 27 Sep 2026 · c.email
Headquarters
London, United KingdomRead 23 Sep 2026 · c.email
Business compliance
Business Self-Serve includes efficient compliance with data protection regulations.Read 27 Sep 2026 · c.email
Business hosting
Business Self-Serve can use the customer's server or a server included in the plan.Read 27 Sep 2026 · c.email
Business teams
Business plans provide protection for teams and organisations.Read 27 Sep 2026 · c.email
C-layer network
Public encryption and verification keys are stored on a distributed blockchain of independent nodes.Read 27 Sep 2026 · c.email
C-layer status
The C-layer is under development, and anyone can run a node.Read 27 Sep 2026 · c.email
cDot framework
c.Email is built on cDot, a protocol for encrypted identity, email, messaging, and payments.Read 27 Sep 2026 · c.email
Company owner
c.Email is provided by Certonymity.Read 27 Sep 2026 · c.email
Email addresses
The free plan allows unlimited email addresses.Read 27 Sep 2026 · c.email
Encryption method
c.Email uses end-to-end hybrid public-key encryption combining classical and post-quantum cryptography.Read 27 Sep 2026 · c.email
Existing email
Users keep their current email address and do not need to create a new account.Read 27 Sep 2026 · c.email
Eyes Only protection
For Your Eyes Only emails require continuous liveness verification from the intended recipient.Read 27 Sep 2026 · c.email
Free features
The free plan includes encryption, verified sending, post-quantum security, and For Your Eyes Only emails.Read 27 Sep 2026 · c.email
Free pricing
c.Email is free for all users and will always have a free tier.Read 27 Sep 2026 · c.email
Identity check
Setup includes a one-time identity check with an existing ID and liveness check.Read 27 Sep 2026 · c.email
On-device data
Identity data is stored only on the user's device and does not leave it.Read 27 Sep 2026 · c.email
Platforms and apps
c.Email is available as an app and browser extension, including a Chrome extension.Read 27 Sep 2026 · c.email
Post-quantum standard
c.Email uses ML-KEM, the post-quantum standard published by NIST.Read 27 Sep 2026 · c.email
Premium status
Premium features are planned as part of an expanded product suite.Read 27 Sep 2026 · c.email
Security levels
Users can choose Not secure, Secure, or For Your Eyes Only email security.Read 27 Sep 2026 · c.email
Server access
Emails are encrypted and decrypted on devices and are not stored, encrypted, or decrypted on c.Email servers, with a business exception.Read 27 Sep 2026 · c.email
Support access
The site provides a Support link and invites users to get in touch.Read 27 Sep 2026 · c.email
Supported addresses
Users can connect an existing Gmail or Outlook address.Read 27 Sep 2026 · c.email

Plans and prices

Free Free c.Email is free for all users. Existing email address support · End-to-end encryption · Verified sending Everything needed to protect emails, including unlimited email addresses. Read 27 Sep 2026 · c.email
Business Plus Priced on request Coming soon; customised business protection and enterprise-level secrecy. Read 27 Sep 2026 · c.email
Business Self-Serve Priced on request Coming soon; protection for teams and organisations with server-hosted encryption. Read 27 Sep 2026 · c.email
Premium Priced on request Coming soon; advanced features for individuals. Read 27 Sep 2026 · c.email

Every c.Email plan and price →

Where Specifiction places it

Alternatives to c.EmailAll alternatives →