A Co matches you with newsletter writers whose readers overlap with yours. Cross-promote each other, grow together — no ad spend required.
Tell us about your newsletter — your niche, audience size, and what makes your content unique.
Our algorithm finds newsletters with overlapping audiences — readers who are likely to love your content too.
Exchange promotions with your matches. You recommend them, they recommend you. Everyone grows.
Stop burning money on paid acquisition. Cross-promotion is free — you just exchange value with fellow creators.
Readers who subscribe through a trusted recommendation are 3x more likely to engage than those from ads.
See exactly how many subscribers each swap brings. Track performance, optimize your matches, and keep growing.
“I've been looking for something exactly like this. Paid ads never brought me the right readers.”
Sarah K.
Tech Newsletter, 12k subscribers
“Cross-promotion just makes sense. Why compete when you can collaborate?”
Marcus T.
Finance Newsletter, 8k subscribers
Start free. Upgrade when you're ready to scale.
Perfect for getting started
For serious newsletter growth
For teams & multi-newsletter brands
Be among the first creators to unlock audience-matched cross-promotion.