I've created a sign-up for newsletter book mention swaps. If you're interested check it out at.
I send the email out on the first of each month and have about 475 subscribers. I don't care if you have 1 or a million. I'd just like to build mine and yours.
Please read the description. I'll mention your book with the cover, blurb, and buy links as well as your newsletter signup link in exchange for you mentioning mine in the same way in your newsletter.
We'll see how it goes.