This particular e-mail is not the directive. A directive was sent out to collect biometric data, this email’s purpose was to try and get some positive spin regarding stuff that was leaking out.
I don’t know if the directive has been released by anyone, or is still waiting to be released. Here’s an article in the Guardian that explains in detail:
https://www.theguardian.com/world/2010/nov/28/us-embassy-cables-spying-un
There's a link to it in the Guardian article you linked to.
It's one of a number issued around that time - some under Hillary's name and some under Condi's.