Newsletter Insights — independent newsletter & sponsorship data across 42K+ newsletters
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I analyze history to connect the past, explain the present, and predict the future.
Enter your email and we'll send your inquiry to the Newsletter Insights team.
Tell us your brand and audience. We send back 10-15 newsletters matched to your brief, with sponsor history and CPM ranges per placement.
$300·2-3 working days·refunded if we can't deliver
See what's includedPredictive History Substack's metrics, benchmarks, and sponsor data in one document
117K
Top 10% in Culture
substack
Culture
0.20%· ~229/post
(comments + likes) / subscribers
vs 0.00% category avg
Weekly
1.5 posts/week avg
vs 1.0/week category avg
$5/mo
Category avg: $5/mo
1743
newsletters in Culture
Top 10% in Culture
out of 1743 newslettersPublishing Frequency
Weekly
Last published Oct 10, 2026
Usually publishes Sat
1.5 posts/week avg