Free tools

Intelligence for the newsletter economy

Open market data for operators, advertisers, and agencies. Free to use, updated regularly, built by newsletter.app.

Newsletter Ad Spend Index

Who's buying, what placements cost, and how CPMs compare across 47 newsletters and 43 advertisers — $39M in modeled 2026 spend.

Open tool

Enter your subscribers, open rate, and cadence to see what to charge for a sponsorship — benchmarked against real CPMs by category.

Open tool

Coming soon

The same modeled-spend lens for podcasts: ad rates, CPMs, and which brands are buying which shows.

Coming soon

Creator integration rates, CPMs, and advertiser activity across YouTube channels.

Coming soon

Plan a campaign across newsletters, podcasts, and YouTube — blended reach, CPM, and modeled cost.