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Doc Freemo 
Still makes no sense.. the boss needs to send them the email to begin with, and even if musk somehow got it directly the boss is control of the email so can block any outgoing email to musk quite easily. So not sure how that makes any sense.
Moreover, its not like trump even has access to all their names and emails, the government is specifically designed so he doesnt for exactly this reason (I speak as someone who worked in the IT of government agency and know first hand). Compartmentalization is why even the president isnt privy to top secret information he doesnt have an explicit need to know on, as an example.
If you were that boss and you understood this about the people working under you then you would not block their email because it goes against your own self-interest. Do you not have the ability to model other people's viewpoints and motivations? Can you only assume they think like you do?