Newsletter Insights — independent newsletter & sponsorship data across 40K+ newsletters
Browse all →by a16z speedrun
Weekly insights for founders creating the future.
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 includeda16z speedrun's metrics, benchmarks, and sponsor data in one document
valve.com
lucasfilm.com
macymills.com
219K
Top 10% in Business
substack
Business
+0.3%
~95/post
avg comments + likes (0.04% rate)
Above category average
Weekly
1.2 posts/week avg
vs 1.0/week category avg
Free
Category avg: $7/mo
1324
newsletters in Business
Top 10% in Business
out of 1324 newslettersPublishing Frequency
Weekly
Last published Jun 30, 2026
Usually publishes Tue, Thu, Wed
1.2 posts/week avg
