Penpact matches indie Substack writers with complementary newsletters to swap subscriber recommendations — so you both grow organically, without ads or paid acquisition.
Join 200+ writers on the waitlist
How it works
Link your Substack in seconds. We analyze your content, audience, and niche to understand what makes your newsletter unique.
Our algorithm finds newsletters your readers will love — and whose readers will love you. Quality over quantity, always.
Cross-promote each other's newsletters and watch your subscriber count climb. Organic growth, the way it should be.
Pricing
Start free and upgrade when you're ready to supercharge your growth.
Perfect for getting started
For serious newsletter growth
Testimonials
“I gained 400 subscribers in my first month using Penpact. The matches were so on-point — my readers actually thanked me for the recommendations.”
Sarah Chen
The Intentional Creator · 12k subscribers
“As a niche tech writer, I thought cross-promotion wouldn't work for me. Penpact found three perfect matches I never would have discovered on my own.”
Marcus Rivera
Deep Dive Weekly · 8k subscribers
“Finally, a growth channel that doesn't feel gross. My swap partners have become genuine friends and collaborators. This is how newsletter growth should work.”
Amara Osei
Culture Currents · 22k subscribers
Join hundreds of indie writers who are building their audiences the organic way.