I can see that point, although I would argue that if you include the language "We’re asking for an embargo on any stories" in the email, the vast majority of journalists will treat the contents of the email as under embargo. It's an unenforceable honor code, and most people don't want to get into semantic debates about what exactly is under embargo. But yes, the embargo does not go into effect until the journalists explicitly agrees to it, and that includes the contents of the email. Again, we believe this is the right advice for early-stage startups in order to garner journalist attention.