Why can’t your email be as secure as your texts?

Most people take for granted that the messages they send via popular messaging apps like Meta’s WhatsApp or Apple’s iMessage are end-to-end encrypted (E2EE), meaning that no one but the sender and receiver—not even WhatsApp or Apple—can read the contents. Unfortunately, this rock-solid privacy-preserving encryption doesn’t extend to the other major type of messages we send: emails.  Not a one of the big four email providers—Google’s Gmail, Apple’s iCloud Mail, Microsoft’s Outlook, or Yahoo…