Yes, and then you've also cost the other 127 people in the organization who couldn't care less about HRPROD22-NA01 at least 30 seconds to read and discard the email, plus the lost time for task switching between what they were doing and reading your email. This equates to 2 hours of lost time with one press of the send-button.

One thing that technology has made very easy is for a single person to annoy a very large group of people with minimal effort. And that person does not even have to be out to annoy them, merely stupidity suffices. In fact, technology has not only increased the power of the competent to do good, it has also multiplied the power of the evil or incompetent to do bad (SPAM anyone?).