No we should not. Logging in from anywhere and seeing all mail without problems, server side search improves the usability immensely. People who need encryption

No we should not. Logging in from anywhere and seeing all mail without problems, server side search improves the usability immensely. People who need encryption for sensitive stuff should have this capability, but forcing mandatory encryption for everyone like various do-gooders do want to will lead to far too many problems for regular users.