Why so much email Spam fro SiriusXM?

Seriously. I have a paid sub and I'm happy for the most part. Why the fuck do I get emails multiple times a week trying to sell me some bootleg SXM radio that can be installed in another car or an in home radio. I'd understand if this were before the days of streaming but come on. Surely they can be paying their marketing people to do more productive work that might help them grow their subscription base instead of this crap.