Who is running a newsletter as a product? And how do you grow your list?

I run a weekly newsletter full with inspiration. Every week on monday 9.00 sharp I send the newsletter via Mailchimp to 160-ish people, of which around 50% open and read the mail. Pretty happy with the contant flow of it. I just made editio 205 of the Good Monday! mail, but I want to grow it from here and even make a little money off it. For the last part I use Patreon, and for the rest, everything of open to grow and monetize.

Who is running also a newsletter as a product?