We've been using it for some time as well, not even with a random value, just `X...

		bluetech on March 14, 2019 \| parent \| context \| favorite \| on: Companies may be losing millions due to emails bur... We've been using it for some time as well, not even with a random value, just `X-Entity-Ref-ID: null` works too. Found it through some obscure StackOverflow answer.