Letter Loop matches you with complementary newsletter creators for subscriber swaps. Cross-platform, quality-focused, and built for indie writers with 500-10K subscribers.
Free tier available · No credit card required
SparkLoop costs $99/mo. Beehiiv Boosts only work on Beehiiv. Substack's algorithm favors big names. Manual outreach is a time sink. There has to be a better way.
Works across Substack, Ghost, Beehiiv, ConvertKit, and independent newsletters. No walled gardens.
Matched by audience alignment and engagement metrics, not just category. Get subscribers who actually read.
Designed for newsletters with 500-10K subscribers. Affordable pricing that doesn't eat your budget.
Add your newsletter with verified engagement metrics — open rates, subscriber count, and niche.
Our matching algorithm finds complementary creators with similar audience sizes and aligned topics.
Run structured swaps with tracking on both sides. See exactly how many quality subscribers you gained.
Start free. Upgrade when you're ready for unlimited growth.
Perfect for trying out newsletter swaps and finding your first partners.
Unlimited swaps and advanced tools for serious newsletter growth.
Join indie creators who are growing their newsletters through quality subscriber swaps instead of expensive ads.
Get started for free