Newsletter Insights — independent newsletter & sponsorship data across 32K+ newsletters
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Tell us your brand and audience. We send back 10-15 newsletters matched to your brief, with sponsor history and CPM ranges per placement.
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See what's includedSocial Signals by GREG SWAN's metrics, benchmarks, and sponsor data in one document
2K
Above Median in Marketing
substack
Marketing
0.15%· ~3/post
(comments + likes) / subscribers
vs 0.00% category avg
Weekly
1.0 posts/week avg
vs 1.0/week category avg
$5/mo
Category avg: $7/mo
225
newsletters in Marketing
Above Median in Marketing
out of 225 newslettersPublishing Frequency
Weekly
Last published Mar 27, 2026
1.0 posts/week avg
