Newsletter Insights — independent newsletter & sponsorship data across 33K+ 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 includedJohn’s Substack's metrics, benchmarks, and sponsor data in one document
89K
Top 10% in Politics
substack
Politics
+0.6%
vs 0% category avg
0.40%· ~354/post
(comments + likes) / subscribers
vs 0.01% category avg
~3x per week
2.7 posts/week avg
vs 1.1/week category avg
$8/mo
Category avg: $6/mo
1198
newsletters in Politics
Top 10% in Politics
out of 1198 newslettersPublishing Frequency
~3x per week
Last published May 25, 2026
Usually publishes Fri
2.7 posts/week avg