Newsletter Insights — independent newsletter & sponsorship data across 40K+ newsletters
Browse all →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 includedRuby Central's metrics, benchmarks, and sponsor data in one document
rubyshield.com
handshake.com
+7 more past sponsors — enter your email below to see all
Subscriber data is estimated from engagement patterns. Verified stats make your media kit more credible to sponsors.
Verify Your Stats →1K
Above Median in Uncategorized
ghost
Uncategorized
Weekly
0.8 posts/week avg
$25/mo
Category avg: $5/mo
18009
newsletters in Uncategorized
Above Median in Uncategorized
out of 18009 newslettersEstimated from public engagement data — counts may fluctuate between updates
Publishing Frequency
Weekly
Last published Jul 7, 2026
0.8 posts/week avg