Newsletter Insights — independent newsletter & sponsorship data across 23K+ newsletters
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Midstack's metrics, benchmarks, and sponsor data in one document
2K
Above Median in Culture
substack
Culture
Stable
No measurable change this week
4.03%· ~81/post
(comments + likes) / subscribers
vs 0.00% category avg
~2x per week
2.0 posts/week avg
vs 1.0/week category avg
$5/mo
Category avg: $7.02/mo
3020
newsletters in Culture
Above Median in Culture
out of 3020 newslettersPublishing Frequency
~2x per week
Last published Mar 25, 2026
2.0 posts/week avg