Email accounts have become more than a longstanding method of communication, morphing into the centre of your digital world as the user login for hundreds of services from shopping to socials.
When you talk to any IT admins, they'll tell you a few things about encryption...the current state of encryption is super hard to implement across the email ecosystem.
The White House demanded that sensitive CIA hiring information be sent via unclassified email, risking exposure to adversaries, despite prior warnings about email security.