SPONSOR INTELLIGENCE
Analyze advertiser mix inside newsletters
See which brands advertise in each newsletter and how advertiser categories cluster. Evaluate inventory before you buy.
100 newsletters with observed sponsor activity
Newsletter advertiser composition
Observed sponsor activity across newsletters, ranked by advertiser diversity
| Newsletter | Brands detected |
|---|---|
| The Charlotte Ledger | 12 |
| Kaira Jewel’s Substack | 12 |
| Bar Harbor Story | 12 |
| The Pomp Letter | 11 |
| Not Boring by Packy McCormick | 11 |
| Wired Women | 11 |
See advertiser composition for all 100 newsletters
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Advertiser composition
Example: The Charlotte Ledger
The Charlotte Ledger
News / 28K subscribers / substack
12
Brands detected
15
Placements
1.3
Avg per brand
News
Category
BRANDS ADVERTISING IN THIS NEWSLETTER
3 placementsMar 10
2 placementsMar 10
Where brands stand out
Computed signals about advertiser diversity and category dominance
Behind the Craft has 9 unique brands across 9 placements. No single brand dominates: the most frequent advertiser holds only 11.1% of placements. This is a diversified advertiser base.
The Pomp Letter shows the opposite pattern: 39 placements across 11 brands, with the top advertiser taking 48.7% of placements. High advertiser loyalty or limited buyer interest.