Monetize your newsletter with advertising.
A list of 500 engaged readers can out-earn someone’s 500,000 — if you sell it right. The free playbook behind $5M+ in newsletter ads sold building WhereBy.Us: three ways to sell, seven ad units, real CPM benchmarks.
- Three ways to sell: programmatic, advertiser-provided, and native
- Seven ad units that work — and when to use each
- Real CPM benchmarks and a pricing formula
- How to fill the calendar, then raise your rates
Free to read, free to download — no sign-up, no gate. Subscribe below for the latest reports, industry news, and tips.
From the team behind millions of dollars in newsletter ads — trusted by Condé Nast, Patch, McClatchy, Townsquare Media, and more.
The white paper
Read the whole playbook, right here.
All 28 pages, no form in the way. Scroll through below, download the PDF, or take it full screen.
The world's leading newsletter teams run on Letterhead
What monetizing well looks like
on monetized sends after 180 days
by our founders building WhereBy.Us
programmatic, advertiser-provided, native
What's inside
From set-and-forget to bespoke.
Programmatic
Automated fill from a demand partner. Set-and-forget, with a ceiling — $0.10–$1.50 CPM. Switch one slot to programmatic and keep the rest direct.
Advertiser-provided
Advertisers fill your slots with their own creative, sold self-service or direct. Higher rates than programmatic, with no production on your side.
Native
Your team writes the ad in your voice, the way Morning Brew and theSkimm do. The highest rates and best performance — and the most work.
Seven ad units
Sponsorship, native, title, text, sponsored listing, section sponsorship, and the house ad — what each is for, and how to sell it.
Pricing that holds
Real CPM ranges ($5–$50), the nominal-price formula, and how to add value instead of discounting when buyers push back.
Revenue, run for you
Design inventory, place and track every ad across one newsletter or hundreds, and generate sponsor reports in seconds.
“We at the Patch local news network have worked with Letterhead to create a critical monetization engine. They've been the best kind of partner — striving to understand our needs, quick to respond, and building for the future.”
— Simone Wilson, Senior Manager, Patch.com
Before you dig in
Is it really free?
Yes. Read the full white paper online or download the PDF — no card, no sign-up.
What's the newsletter?
Our weekly take on owned audience, monetization, and the business of email — the latest reports, industry news, and tips. Free, unsubscribe anytime.
Who is it for?
Publishers and revenue teams who already send and want to turn newsletter attention into ad revenue — whether you're starting from zero or scaling what works.
Do I need Letterhead to use it?
No. The strategies are platform-agnostic. They're just faster to run on a system that handles direct, self-service, and programmatic in one place — which is the case we make at the end.
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Turn attention into revenue.
Read the playbook free, then see Letterhead run direct, self-service, and programmatic ads across every send — a no-cost, no-obligation test drive.
See every send monetized on your newsletters — no cost, no obligation
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