SPONSORPROOF · FOUNDING EDITION · 24 HAND-VERIFIED SPONSORS
A hand-verified database of 24 brands actively buying email-newsletter sponsorships, every one confirmed by opening the actual sponsored issue on October 28, 2026. Strongest in podcasting/creator, SaaS and productivity, marketing, and health/wellness audiences. Every row includes a public proof link and the brand’s public contact route, so you can pitch today instead of researching for a month. New sponsors are verified weekly; Pro buyers get every refresh.
Get verified sponsors in your niche, free Buy the Founding Edition: $49Sponsors are out there. What you don’t have is 20 spare hours to reverse-engineer who is buying, which brands fit your niche, and how to reach them. The big sponsor databases charge $39–$399 per month for tens of thousands of unverified rows.
| Field | What it tells you |
|---|---|
| Brand & category | Who is buying, and what they sell |
| Niches they buy | Which newsletter audiences they pay to reach |
| Example placement | A newsletter where their ad actually ran |
| Proof link | The public URL of that sponsored issue. Check it yourself. |
| Contact route | Their public partnerships/advertise page or form. No scraped personal emails. |
| Last verified | The date we last confirmed the proof link resolves |
Newsletter sponsorships in these niches run about $25–$75 per 1,000 subscribers. A 2,000-subscriber newsletter sells one slot for roughly $50–$150; a 5,000-subscriber newsletter at a $50 CPM charges $250. One closed deal repays this database 2x–5x over.
$49 one-time
Core. The full database (Google Sheet + CSV), Founding Edition: 24 hand-verified sponsors.
Buy Core$99 one-time
Pro. Everything in Core, plus the outreach template pack, a pitch tracker sheet, and a refreshed edition every month for 12 months. The database grows weekly, and Pro buyers get every step of that growth.
Buy Pro14-day money-back guarantee, no questions. If a proof link is dead the day you receive the database, we replace the row or refund that row’s share.
Tell us your niche and we’ll send up to 10 verified sponsors from the database, free: the closest matches to your niche. A few niches are still small and growing, and we’d rather send you 6 perfect rows than pad to 10. If the sample isn’t useful, the full database won’t be either, and you’ll have spent nothing.
How is this different from SponsorGap or Who Sponsors Stuff?
They’re subscriptions ($39–$399/mo) with very large, weakly-verified databases.
We’re one-time, and every row carries a public proof link. We’re smaller, on
purpose: 24 rows we personally opened and confirmed beat 25,000 rows nobody checked.
Only 24 rows?
Yes, and we say so up front. Each row survived a strict standard: we opened the actual
sponsored issue. New sponsors are verified weekly.
Who is it for?
Independent newsletters with roughly 1,000–50,000 subscribers that sell, or want to
sell, direct sponsorships.
Is the contact info scraped?
No. Public business contact routes only.
SponsorProof. Verified by hand, one row at a time.