A Co matches you with compatible newsletter writers so you can cross-promote each other and grow your audience — for free.
Join 200+ newsletter writers on the waitlist
Three simple steps to start growing your newsletter audience
Create your profile with your newsletter details, audience size, and content niche. It takes less than 2 minutes.
Our algorithm finds newsletter writers with compatible audiences — similar size, complementary niches, engaged readers.
Recommend each other to your audiences. Track performance and watch your subscriber count grow organically.
Everything you need to grow your audience through collaboration
No ad spend required. Grow your newsletter organically by tapping into established, engaged audiences that complement yours.
Our algorithm analyzes audience overlap, content niche, and subscriber engagement to find your ideal cross-promotion partners.
See exactly how many subscribers each cross-promotion brings. Measure click-through rates, conversions, and audience quality.
Start free. Upgrade when you're ready to scale.
Perfect for getting started with cross-promotion.
For serious newsletter operators ready to scale.
Be among the first newsletter writers to try A Co.