The biggest change I've made to my sending segment in over a year.

Most publishers track subscribers and revenue. The best publishers track RPES, CPES, Activation Rate, and Subscriber Churn.

Podcasts obsess over attention. Email still obsesses over opens. In 2026, that gap is starting to cost publishers real money.

Why suppression, sunset policies, and list discipline are often the fastest path to better deliverability and higher revenue.

What Jeffrey Eisenberg of Media Intercept taught me about the list-size illusion, why newsletters aren't a bottom-of-funnel channel, and the one fix that will unlock real ad budgets.

How the biggest lists quietly lose their reach — and what the niche players get right.