Live Newsletter Sponsorship Leaderboard(0 publications)
No Publications in this Category Yet
No newsletters active right now. List your publication and sell out your sponsor slots!
The Permissionless Attention Marketplace for Substack & Beehiiv Newsletter Sponsorships.
Pay to rank #1. No agency commission fees. Command the top spot and sell out your open weekly ad slots to paying SaaS brands.
No newsletters active right now. List your publication and sell out your sponsor slots!
Interconnected decentralized attention markets operating on real-time permissionless bidding.
letterbid.lolStartups & SaaS Product Launches
Software Reviews & B2B Deals
Open Source Devs & GitHub Tools
High-Paying Affiliate Programs
Polymarket Predictions & Alpha
Pump.fun King of the Hill Arena
Autonomous AI Agents & Claude MCPs
Micro-SaaS & Online Business M&A