Most publishers still lead with their subscriber count.
Advertisers stopped caring about it years ago.
This week on Audience Bridge Insights, I sat down with Jeffrey Eisenberg, Co-Founder of Media Intercept, to talk about the side of newsletters most operators avoid: how the ad money actually works.
Jeffrey's path is unusual. Law school, then radio sales, then a decade in digital video at companies like Dailymotion and Demand Media, before he landed in newsletters.
He co-founded Media Intercept in early 2023 and was profitable in six weeks.
Last week, they launched their own monetization platform built specifically for this space.
We actually met at a newsletter conference the week before, where it struck both of us how little anyone was talking about monetization.
So we fixed that.
This one gets into the plumbing of how newsletter ad revenue really moves.
Get your popcorn ready.
You can watch the entire podcast now or scroll down to get the full breakdown.
The List-Size Illusion
Here's the history most operators never learned.
Originally, email newsletters weren't seen as valuable.
Take newspapers. The developed community newsletters. And when selling newspaper advertising, they'd throw in email newsletter ads for free. Because it cost them nothing and helped the sale.
And to make it worse, they'd sell leading with metrics that sounded good - but that don't really matter: like list size and inflated open rates.
The problem is that none of those numbers mean what they claim to.
iOS counts nearly every email as an open
A "million subscribers" rarely means a million people getting mail
A 50% open rate tells an advertiser almost nothing about attention
Value was never in the list size, the opens, or any other vanity number.
It's in engaged audience density, how much real attention you can deliver per send.
That's the thing advertisers are actually buying.
The Take That Made Me Sit Up
The line Jeffrey kept coming back to is one I've been saying for years, but he framed it sharper than I have:
"Newsletters are not a bottom-of-funnel channel. If you treat them that way, you're going to be disappointed."
If an advertiser walks in demanding a 5x last-click return, Media Intercept tells them straight: that's not what this is.
Newsletters are a blended channel.
They generate awareness and demand at the top, and they can convert, with real, trackable attribution most branding channels can't offer.
But the operators and reps who pitch them as a pure performance play set up everyone to fail.
The fix is just honesty.
👉 Set the expectation correctly, and advertisers spend more, not less.
CPM, CPC, CPA: Who's Actually Carrying the Risk
This was the clearest explanation of pricing models I've heard.
Every model is really a question of who absorbs the risk:
Flat rate / CPM - all the risk sits with the advertiser. They pay for impressions whether or not anything happens.
CPA - all the risk sits with the publisher. You can generate real demand and still get stiffed on last-click because the buyer comparison-shopped, or the brand's checkout was broken.
CPC - shared risk. The advertiser pays for engagement, the publisher gets paid for delivering it.
Media Intercept built on CPC because it's the fairest way to judge a campaign when the goal is action.
But here's the nuance most operators miss: a list of 20,000 highly engaged business readers can justify a premium flat rate, while a general-interest list needs scale to make CPC worthwhile.
Your model should follow your audience, not the other way around.
The Bot War: "Illegitimate, Not Fraud"
We spent a real chunk of the conversation on traffic quality, and Jeffrey draws a distinction most people don't:
"I like to say illegitimate, not fraud. Fraud implies someone's trying to steal."
A lot of "bad" clicks aren't malicious. Corporate security scanners click every link in a B2B email before a human ever opens it. That's not a person, but it's not fraud either.
Then there's the gray area, like VPN traffic. Some platforms throw all of it out. But 50+ million Americans use VPNs, so blanket-blocking it means tossing real conversions.
Media Intercept's approach: let the traffic through, then clean it after the fact using down-funnel signals.
High conversion rate plus VPN traffic? Probably real. Pay the publisher.
2,000 clicks and two leads on a product that usually does a hundred? Something's off.
And they're transparent with publishers about it, because being the canary in the coal mine beats letting a publisher discover too late that their list is rotten to the core.
How Often Is Too Often
Audience fatigue is brutal in newsletters because your list is mostly static. The same people open it week after week.
"Send an ad out every day and you've basically destroyed that audience."
His rules of thumb:
Once a month is optimal for a recurring advertiser
Twice a month is the ceiling
Dedicated sends: no more than once a quarter to the same list
The logic is long-term.
You'd rather run an advertiser 15–20 times over a year than burn them eight times in two months and never see them again.
Respect the audience, or there won't be one to monetize.
The Real Unlock: Standardization
This is the part that matters most for where the industry goes next.
That fragmentation is the single biggest thing holding budgets back.
Brands spending billions can't move meaningful money into a channel where nobody agrees on what an impression, an open, or a click even is.
Whether it comes through the IAB or somewhere else, the industry needs shared definitions everyone trusts.
And when that happens?
That's when the real money floods in, because the confidence will finally be there that what advertisers are buying is real.
My Take After This Conversation
Three things stuck with me:
1. The honesty about what this channel is.
Jeffrey's refusal to oversell newsletters as bottom-of-funnel is exactly why his advertisers stick around. Set expectations, keep clients.
2. Risk is a pricing decision.
CPM, CPC, CPA aren't just acronyms, they're who eats the loss when a campaign underperforms. Knowing that changes how you negotiate every deal.
3. Measurement is the whole game.
Engaged audience density, clean traffic, standardized metrics. The publishers who operationalize this will own the next decade. The ones still selling raw list size will keep getting commoditized.
If you're still pricing your inventory on list size, this episode will change how you sell.
See you next week,
Chris Miquel
P.S. Every move Jeffrey described, pricing on real engagement, cleaning bad traffic, proving your audience is worth a premium, comes down to one thing: knowing what's actually happening with your mail.
That's what we built Smart Delivery for, domain-level deliverability and engagement monitoring so you know what Gmail is doing with your email before your numbers fall off a cliff.
And if you're tired of selling raw list size, let’s discuss how to grow engaged subscribers worth monetizing, the density advertisers actually pay for. Book a call if you want to talk through it.
