I'm going for a guess the radio silence is because nothing is going to be done if no one received it and the blame will be put on what the customer did or did not tick . Nothing more to see here as usual. If you have got it then fine but if you haven't nothing to see here move along is probably the attitude we should take .
The condition for receiving the email was having signed up to the newsletter.
So basically it's "you didn't let us spam you, so no email for you".