So, I finally did it. I finally figured out how to create an official author newsletter! The form to join is now part of my author page, so you can find it by clicking "Newsletter" in the top menu.
Or, here's the direct link to the form.
I've also decided to use the newsletter carefully, sparingly. I know that people are inundated these days with junk mail and spam, so I'll be sure only to send a newsletter/email out when I'm sharing special news, like future release dates or cover reveals.
I like the idea of a newsletter. Of sending people information who want that information, people who signed up for it of their own accord. So, if you're one of those people --- thanks! :-)