Gmail users can try encrypted email, but there's almost no point in putting in the effort.
How to Send Encrypted Emails – What You Need to Know
Google is now letting business account users try end-to-end encryption (E2EE) for email, which prevents even Google from seeing the contents of messages. It’s like sending an E2EE message in WhatsApp, Signal, or iMessage in this respect. Despite the insecure nature of email in general, end-to-end encryption of email is perfectly safe and a real boon to security. The problem is that no one uses it.
“[Implementing] and using encryption can be challenging for some people, especially those who are not tech-savvy. Encrypted email requires the use of digital certificates and keys, which can be confusing and intimidating for some users. This can make it difficult to achieve widespread adoption of encrypted email, even if it is technically possible,” technology advisor Stéphane Paquet told Lifewire via email.
Once enabled, business account users will be able to click a padlock icon when composing an email, and it will be locked firmly until the recipient opens it. The feature is also coming to Google’s iOS and Android apps.
