Newsletter Insights — independent newsletter & sponsorship data across 33K+ newsletters
Browse all →Analysis, data, and opinions for founders, operators, and investors in Vertical AI. By the investment team at Euclid.
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 includedEuclid Insights's metrics, benchmarks, and sponsor data in one document
parafin.com
4K
Above Median in AI
substack
AI
0.22%· ~9/post
(comments + likes) / subscribers
vs 0.00% category avg
WeeklyOn pause
Last published Mar 25, 2026
Free
Category avg: $6/mo
576
newsletters in AI
Above Median in AI
out of 576 newslettersPublishing Frequency
Weekly
Inactive — last post 2 months ago