Once you’ve done this, you first need to set up a passkey. This encrypts the database containing your private keys for encrypting and authenticating emails, which remains on your browser and nowhere else. The extension will prompt you to do this.
After creating your passkey, you’re ready to sync your private keys. To do this:
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Open c.Email on your phone (the QR code won’t work with your camera app).
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Tap Account details in the bottom right.
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Tap Link device.
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Scan the QR code.
You can now start using c.Email in your browser.
Only you can sync your keys – if someone else tried to scan your QR code, they’d have to prove ownership of your email address. If you cannot scan the QR code, this is because you need to log in and prove ownership of your chosen email address first.
All information exchanged between your browser and the c.Email app is encrypted. We don’t have access to this data or the key to decrypt it.