LetterPact automatically pairs your Substack with aligned creators in adjacent niches. You recommend them, they recommend you — organic growth at scale, zero ad spend.
Get early access, priority matching, and founding member pricing for a one-time $29.
Link your newsletter in 30 seconds. We read your subscriber count, niche, and recent content to build your creator profile.
Our algorithm matches you with non-competing newsletters in adjacent niches. Every partner is reviewed for quality and audience alignment.
LetterPact inserts co-recommendations into both newsletters automatically — you grow together, on autopilot, every week.
Join the waitlist for free, or lock in founding member access today for a one-time $29.
Join as Founding Member — $29