At least in Germany companies and government are required to configure mandatory TLS for SMTP and IMAP so the biggest attack vector is gone. No end-to-end encryption though.
The most significant attack vector might be the admin of the email service. In European public institutions, the admins have access to your work account (which is healthy and ok). WhatsApp, it’s the equivalent to share a coffee some blocks far away from the office (which is healthy and ok).
true. Keep in mind that specific industries (e.g. finance) have transparency requirements so end-to-end encrypted messengers are not acceptable (prevent insider trading, collusive behavior, data theft).
In private, personal communication, everyone must have the right to use end-to-end encryption but in commercial and governmental communication, there needs to be some archive, accessible on judicial request.
