Trade warm leads
with fellow founders.
Grow without ads.
WarmLoop automatically matches indie SaaS founders whose audiences overlap, then facilitates curated newsletter shoutout swaps — so your best growth channel is other people's trust.
Three steps to compounding growth
No cold outreach. No ad budgets. Just warm introductions between founders whose audiences actually want what you're building.
Connect your email list
Link your Mailchimp, ConvertKit, or any ESP. We analyze your audience segments — not individual emails — to understand who your subscribers are.
Get matched with aligned founders
Our algorithm finds founders with audiences that overlap yours — same job titles, industries, tools, and pain points — but not your direct competitors.
Swap curated shoutouts
You write a genuine recommendation for their product, they write one for yours. Both go out in the same newsletter cycle. Warm, authentic, mutual growth.
Warm beats cold, every time
A personal recommendation from a trusted newsletter is worth 10× a cold ad impression. You're not buying reach — you're borrowing trust.
Your audience already wants it
We only match you with audiences that share your subscribers' profile. No wasted clicks, no confused readers.
Mutual skin in the game
Both founders stake their list reputation on the swap. That keeps quality high — nobody promotes something mediocre to their own subscribers.
Zero ad spend
Every new subscriber comes from a genuine recommendation, not an algorithm or an auction. Your CAC is a great email.
Join the waitlist.
Start growing.
We're onboarding founders in batches to ensure quality matches. Early members get priority matching and lifetime founding-member pricing.
0 founders already waiting