Engagement, reputation, activation, growth, and why they're not four separate problems.

The domain breakdown, the segment lag, and the open number you can't verify.

What Dan Oshinsky of Inbox Collective taught me about the third big wave in email history, why depth beats everything in an AI-filtered inbox, and the fundamentals that matter more now, not less.

Machine opens, "human" opens, and the 2-Minute Rule that exposes them all.

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.

Most publishers obsess over long-term monetization while mishandling the only window that actually predicts it.

Two publishers add the same 50,000 subscribers. One builds an audience. The other builds a liability.

A simple framework to understand what your subscribers actually cost, and what they’re worth.

What Matt Paulson taught me about “active” subscribers, the 5-minute open rule, and why they are running 4 Beehiiv lists.

How Smart Delivery saved us from ourselves.

The difference between a $0.50 lead that prints money, and one that destroys your list.

A deep dive into what actually works with co-reg in today’s deliverability landscape.

The data came in. Primary inbox wasn't the win everyone thought it was.

Finance publishers are playing on hard mode, here’s how to win anyway

The window is short. Most newsletter operators are optimizing the wrong thing.

You're losing real subscribers and never seeing them leave.

What a Quartz VP learned about email that most operators never figure out.

Deliverability doesn't get stage time. I'm changing that Thursday.

The leads were cheap. The list grew fast. And six months later, their deliverability was destroyed and revenue hadn't moved. Here's what nobody tells you about co-reg.

What happens when you stop optimizing for "cheap subscribers" and start optimizing for readers who actually engage? Nathan May showed me the numbers, and they're wild.