Newsletter Insights — independent newsletter & sponsorship data across 34K+ newsletters
Browse all →Enter your email and we'll connect you with this newsletter.
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 includedCharles Eisenstein's metrics, benchmarks, and sponsor data in one document
84K
Top 10% in Culture
substack
Culture
0.31%· ~260/post
(comments + likes) / subscribers
vs 0.01% category avg
Weekly
1.5 posts/week avg
vs 1.0/week category avg
$7/mo
Category avg: $5/mo
3239
newsletters in Culture
Top 10% in Culture
out of 3239 newslettersPublishing Frequency
Weekly
Last published May 24, 2026
Usually publishes Mon, Tue
1.5 posts/week avg