That means you have the right to determine if and when copies are made of your words and images, and what is paid to you for those copies. When you put your original words or images in your web directory and make them available to the public, you are giving other web surfers the limited right to download a free copy to their browser. But you are not giving up all rights to your control over the distribution of your work. Likewise, the work of others, accessible via computer, does not become yours to copy and redistribute freely. This applies to individually produced works including email as well as commercially produced software.
Harassment is repeated.
With that information, you may contact enforcement authorities, including the system management at the message sender's location. If the messages came from someone at USU, contact the Student Services office in the Taggart Student Center. This does not include on-topic mail sent to a subscription mailing list. As mentioned above, the sender still holds the copyright on the message sent to you. It does not have to involve any sort of financial offer.