Inbox restrictions: because otherwise every single service ever will start accepting only official government emails to sign up, killing anonymity on the intern

Inbox restrictions: because otherwise every single service ever will start accepting only official government emails to sign up, killing anonymity on the internet (and clogging your official mailbox with not-quite-spam). Outbox restrictions: because otherwise every citizen who gets a bit of malware on one of their devices will start sending spam and get (temporarily) restricted, and the whole point is to have a reliable address that you know the citizen cannot lose access to. Also because it would be real weird if you could send messages to addresses that cannot reply to you because of the inbox whitelist.