Google does not. In many ways, non-repudiation property of emails is a boon. We do not hear much about it, but I bet that many thousands of legal disputes are

Google does not. In many ways, non-repudiation property of emails is a boon. We do not hear much about it, but I bet that many thousands of legal disputes are settled once people realize that their emails can be verified via DKIM signatures. The fact that it allows to verify the authenticity of leaked emails is only a small and not necessarily negative side-effect.