Gmail: Bringing easy end-to-end encryption to all businesses

IT teams also have the option to require all external recipients (even if they are Gmail users) to use the restricted version of Gmail. This helps ensure that their organization’s data does not end up stored on third-party servers and devices.

Now companies can send contracts as well as other business mail and ensure the other party doesn't retain a copy. I can't see how this will go wrong.

(Another obvious criticism of this E2E encryption is that it is NOBUS)