LetterKing

LetterKing is a live ranking leaderboard where newsletter creators compete for visibility by bidding on top positions in timed qualification rounds. Each round runs for 30 days, giving creators a structured window to claim and hold their spot.

The directory is organized by niche — covering categories like Indie SaaS, AI & Engineering, Marketing & SEO, Design & UX, and more. Readers can browse curated picks ranked by both editorial selection and live creator bids.

Bidding starts from $1, making it accessible for independent creators and solo newsletter operators who want exposure without large advertising budgets. The competitive format means rankings reflect genuine creator investment, not just follower counts.

For newsletter operators, it's a discovery channel that puts your publication in front of readers actively looking for new content to follow. Each listing includes your niche, subscriber count, and a direct link to your newsletter.

The leaderboard model creates a sense of urgency and competition — top-ranked newsletters gain the most visibility during each round, incentivizing creators to actively promote their position. It's particularly useful for indie newsletters in technical and business niches looking to grow their audience organically.