Emails sent with Gmail’s end-to-end encryption are extremely secure because only the sender has control over the encryption key, which is stored outside of Google’s infrastructure. Users can click the padlock by the Bcc button and press Turn On under the Additional Encryption’ option to apply it.

Marking the 21st anniversary of Gmail, Google is preparing to roll-out a new end-to-end encryption standard for its email service in hopes of democratising encryption and leaving old standards in the

Although the encryption is for business customers, regular consumers on both Gmail and non-Gmail accounts can receive the encrypted emails.