How do you grow your newsletter? 👀

Hey Product Hunters! Recently I launched a newsletter with weekly marketing case studies from profitable Solopreneurs (https://makerbox.ck.page/marketi...). Last week, I tried content repurposing and got around 50 new subscribers: 🔹 autoplug on Twitter 🔹 next issue teaser on Twitter 🔹 repurposing content on Product Hunt discussions 🔹 repurposing content on Indie Hackers To be honest, kinda dissatisfied with the growth. I thought I could grow at least +100 😅 So, how do you promote your newsletter? 🤔