SponsorSheep
- How you buy
- Book listed slots at the listed rate
- Price
- Free to browse; commission on bookings
- Newsletters
- Listed newsletters, plus the Bellwether sponsor database
- Best for
- Booking listed slots with rates up front
The 5 main places brands buy newsletter ads in 2026, how each works and what it costs. Plus the one step all of them leave to you: deciding which newsletters are worth it.
Facts checked on each company's own website, November 4, 2026.
Networks, marketplaces and managed services, side by side. Open any one for the full comparison with Radar Lab.
Prices and figures are each company's own, from their websites on November 4, 2026. If something is out of date, tell us at hello@partnershipintel.com.
It comes down to how much you want to choose yourself.
If you want it done for you
Set a budget and a goal; they pick the newsletters and run the ads.
If you want to pick each slot
Browse listed newsletters and book the slots you want, at a listed price.
If you want to know which ones work
See who sponsored each newsletter, with the real ad, then book anywhere, including directly.
Each one is good at selling you a slot. None of them, on their public pages, answers whether that slot works for brands like yours.
In Radar Lab's data, 46% of brand and newsletter pairings ran more than once. Those comebacks are the proof to check before you book. Radar Lab data, November 2, 2026.
Something else? Email hello@partnershipintel.com, or read what newsletter ads cost.
A newsletter ad network sells ad space across many newsletters at once. You set a budget and a goal, and the network places your ads, usually paid per open or per click. The beehiiv Ad Network and Paved's Ad Network work this way. Managed services like Wellput run the campaign for you.
On an ad network, the network chooses where your ads run. On a marketplace, like Paved's Marketplace, SponsorSheep or Passionfroot storefronts, you pick each newsletter and book its slot at a listed price. Marketplaces give you more control; networks take less of your time.
Paved has no minimum monthly spend, and its Ad Network starts at $50 a day. SponsorSheep and Passionfroot let you book a single slot at the newsletter's price (Passionfroot adds a 5% fee for brands). Wellput campaigns start at $5k, and the beehiiv Ad Network at $15k.
No. Radar Lab doesn't sell ad space or take a cut of bookings. It's the research step before you buy: it ranks newsletters by fit for your buyers, shows who sponsored each one with the real ad and date, and flags good fits no competitor has used yet. Then you book directly or on any network.
Look for proof that brands like yours came back. In Radar Lab's data, 46% of brand and newsletter pairings ran more than once, and those repeat sponsors are the strongest sign a newsletter works. Check fit for your buyers, where competitors already sponsor, and the real ads they ran.
Add your website. Radar Lab ranks newsletters by fit, flags the ones no competitor has sponsored yet, and shows the real ads others ran there.
Try Radar Lab free for 5 days No card needed. Then $49 a month, or $299 a year at the founding price.