Encryption and decryption are performed locally in the user's browser.
Clavimit does not require a backend service to encrypt or decrypt messages. Email content and cryptographic keys are processed locally by the extension only when necessary to perform an operation requested by the user.
Clavimit does not transmit email content or cryptographic keys to a Clavimit-operated server.

For more details, see https://github.com/LucaBonamino/Clavimit/blob/main/PRIVACY.md