Grow your newsletter by swapping readers with complementary creators.
CrossLetter matches indie personal finance & FIRE writers for automatic subscriber list swaps.
Join the Waitlist→How it works
Three Simple Steps
Sign Up & Connect
Create your account and link your Substack. The whole thing takes less than two minutes.
Get Matched
Our algorithm pairs you with complementary creators whose readers would love your content.
Swap Readers
Automatically exchange engaged subscribers. Grow your list with readers who genuinely care.
Why CrossLetter
Built for Indie Creators
No ad budgets. No cold DMs. Just authentic, targeted growth for writers who put craft first.
Grow Without Paid Ads
Stop burning cash on ads that attract the wrong readers. CrossLetter delivers organic growth from audiences already hooked on your niche.
Readers Who Actually Care
Every subscriber swap is targeted. We match you with creators whose audiences align with your content, so new readers stick around.
Zero Negotiation Friction
No awkward DMs or back-and-forth. CrossLetter handles the matching, logistics, and execution—completely hands-free.
Early access
Get on the List
Be the first to know when CrossLetter launches.
We're building this for creators like you.
No spam, ever. We'll only email you about CrossLetter.