SoloSwap matches indie Substack writers with complementary newsletters to auto-swap subscriber recommendations — so you both grow, for free.
The Process
Tell us your newsletter URL, niche, and subscriber count. Takes 60 seconds.
Our algorithm pairs you with complementary newsletters in your niche — different enough to add value, similar enough to convert.
Both newsletters recommend each other to their lists. You gain new subscribers, they gain new subscribers. Zero cost.
Why SoloSwap
Newsletter growth doesn't have to cost money. SoloSwap is the collaboration layer that indie Substack writers have been missing — automated, fair, and niche-specific.
No ad spend, no sponsorships, no cost. Swap recommendations and both newsletters grow — it's a pure win-win.
We match you with newsletters your readers will actually love — same mindset, different topic. High-quality growth.
No cold emails, no awkward DMs. SoloSwap handles the matching, scheduling, and tracking automatically.
Early Access
We're onboarding writers in small cohorts to ensure quality matches. Get early access before we open to everyone.