Newsletter Insights — independent newsletter & sponsorship data across 21K+ newsletters
Browse all →A weekly newsletter for fans and friends of writer Brian Keene.
Enter your email and we'll connect you with this newsletter.
Letters From the Labyrinth's metrics, benchmarks, and sponsor data in one document
Advertisers are viewing this page. Claim it →
4K
Top 25% in Culture
substack
Culture
1.15%· ~46/post
(comments + likes) / subscribers
vs 0.00% category avg
Weekly
1.0 posts/week avg
vs 1.0/week category avg
Free
Category avg: $7.01/mo
2978
newsletters in Culture
Top 25% in Culture
out of 2978 newslettersPublishing Frequency
Weekly
Last published Mar 22, 2026
1.0 posts/week avg