When it comes to great newsletters, more is not always more.
You write more.
You tweak the format more.
You spend more time on the edit.
More more more. But the list still doesn’t move.
Matt McGarry, founder of GrowLetter, has seen this exact pattern play out across dozens of newsletters. He helped scale Milk Road from 10,000 to 250,000 subscribers in under a year. Before that, he helped grow The Hustle to 2.5 million.
Effort isn’t the problem. It’s actually just math.
Most teams are chasing growth before they understand what a subscriber is actually worth.
A big list of low-value subscribers just looks good in a screenshot. It doesn’t create leverage.
“There's really not much value in low-engaged subscribers or general subscribers outside of your ego having a big number,” says Matt. “Financially it's not very valuable.”
There’s a second issue layered on top of that. Newsletters aren’t naturally discoverable. They don’t live in feeds or rank in search. They live in inboxes, which means something else has to bring people in.
If nothing is feeding the top of the funnel, growth slows down, no matter how strong the writing is.
This is an economics and distribution problem. Most teams never actually solve for it, which is why they stall.
Key takeaways: What actually determines who makes the shortlist?
- Most newsletter operators don’t know what a subscriber is worth — so every growth decision is a guess.
- Your newsletter isn’t a discovery channel. If nothing feeds it, it doesn’t grow.
- Scale comes from focus: one channel, proven economics, then push.
- If the product doesn’t convert now, more subscribers won’t fix it.
The 4-step system behind newsletter growth
The newsletters that actually grow don’t try to do everything at once. They move through a loop:
Understand subscriber economics → prove content-market fit → scale paid distribution → build infrastructure → repeat
Done right, this becomes a flywheel. Each step makes the next one easier and faster.
Step 1: Understand and maximize revenue per subscriber
Most teams start with growth. Matt starts with math.
“Before we even talk about getting more subscribers onto your list, I would focus on, 'How do we increase the revenue per subscriber for your existing list?'” he says.
The number that matters is lifetime value (LTV): how much revenue a subscriber generates over time.
For most newsletters, that number tends to fall somewhere between $5 and $25. For tighter B2B audiences, it can go much higher.
That number determines what you can spend, where you can grow, and how fast you can move.
Matt’s rule: Whoever can afford to spend more to acquire a subscriber wins.
But you can’t spend confidently until you know what you’re getting back.
That’s why his first move isn’t to increase subscriber count. It’s to increase revenue per subscriber. Before scaling anything, he looks at how the current audience is monetized — ads, products, or both — and tightens those systems first.
Until that foundation is solid, adding more subscribers tends to amplify inefficiencies rather than fix them.
Step 2: Prove your content works somewhere people can actually find it
Your newsletter is not a discovery channel. It’s a destination.
“Newsletters are not discoverable, but social media content is,” Matt says. “Blog posts via SEO are. You have to be posting to channels where people can discover your content and share your content.”
People don’t stumble into inboxes the way they scroll into feeds. They arrive there after finding you somewhere else — on social, through search, or via a recommendation.
So publishing more doesn’t fix growth.
If nothing is feeding the top of the funnel, the list doesn’t move.
He sees this constantly: operators writing every week for a year and still stuck at a few thousand subscribers. Then you check their social presence, and it’s quiet.
No discovery = no growth.
Organic social solves two problems at once. It drives subscribers, and it tells you what actually resonates.
When you post consistently, you get real feedback — what people engage with, what they ignore, what earns attention. That feedback loop sharpens everything else.
This is also where positioning starts to matter.
Subscribers don’t care what your content is about. They care about what it does for them.
(And for what it’s worth, this is exactly how we approach it at storyarb. We’ll test ideas on social before they ever become a newsletter or playbook, because it’s the fastest, cheapest way to see what actually lands.)
The engagement readiness checklist (before you spend on paid)
You’re not ready to scale just because you want to grow faster.
You’re ready when the product is already working.
That usually looks like:
Your newsletter is your product. You have to make sure your product is good before you're spending money to grow that product," Matt says
He adds: "If your newsletter content is not good enough and it has low engagement, that is not going to change when you spend money on ads. You're just going to get more subscribers of lower engagement.”
If those signals aren’t there, more subscribers won’t fix it. They’ll just make the problem bigger.
Once the content works and the numbers hold, the problem changes.
Now it’s distribution.
Step 3: Master one channel before you touch the rest
Once the economics make sense and the content resonates, growth stops being a guessing game.
For most newsletters, paid acquisition is what unlocks real scale.
But most teams lose focus here. They try to expand everywhere at once — LinkedIn, Twitter/X, TikTok, paid, SEO — and end up spreading effort thin across all of it.
Matt does the opposite.
He finds one channel that works and pushes it hard.
“We’ve made the mistake of testing four different paid sources. We just found we’re spreading our time too thin … so now we just found Facebook to be king.”
That often starts with platforms like Meta — but which channel you choose depends on who you’re trying to reach.
For some teams, that’s Meta (Facebook and Instagram).
For others — especially in B2B — it might be LinkedIn.
You want one channel where:
- you understand the economics
- you can measure performance clearly
- and you can scale without guessing
Once that first channel works, expansion gets easier.
Across many newsletter operators, subscriber acquisition costs typically land around $1–$3 per subscriber. At that range, with a solid LTV, you can spend aggressively and still come out ahead.
Remember. The sequence matters less than the approach.
You want one channel where the math works and the results are clear.
From there, most teams layer in additional channels — TikTok, LinkedIn, Twitter/X, or others — as they find new pockets of reach.
But you’re expanding from something that already works, not testing everything at once.
Step 4: Build the system that keeps growth from breaking
Growth creates pressure. If your system isn’t ready, things start to break.
Deliverability slips. Engagement softens. Paid acquisition gets less efficient.
It doesn’t take a big team. It takes the right pieces:
- A solid email platform
- A high-converting landing page
- Basic reporting
- Clean onboarding (welcome flows, clear CTAs)
And most importantly: list quality.
Low-engagement subscribers don’t just sit quietly in the background. They drag everything down — deliverability, performance, revenue.
Matt saw this clearly in his own business. When he looked at his paying customers, every single one of them had:
- 70–80% open rates
- 20–40% click-through rates
Not some of them. All of them. High engagement was the baseline.
Most traffic doesn’t convert for a simple reason
A lot of newsletter operators make this mistake:
They send traffic to their latest issue.
People read it … and leave.
“When you're talking about your newsletter on social media, we're always directing people to a landing page where it's just about subscribing — not to the most recent issue, because they're going to read that and not subscribe.”
If you want growth, the path needs to be clear. Send traffic to a dedicated subscription page.
Use your archive and blog to capture demand — popups, inline forms, whatever fits your audience — but make the ask obvious.
You can gate content behind an email if you want higher conversion, but that comes with tradeoffs (less SEO, less reach).
If people can consume your content without subscribing, most of them will.
Which makes the tradeoff simple:
You can chase a bigger list.
Or you can build a more valuable one.
The best operators do both, but they prioritize value first.
The math
You don’t grow a newsletter by writing more.
You grow it by building a system where subscribers have real value, the right people can find you, and the whole thing holds up as you scale.
So no, the best newsletter operators aren’t the best writers.
They’re the best at knowing what a subscriber is worth and building backward from there.
FAQ
How do you grow a newsletter from 0 to 10,000 subscribers?
Start with distribution, not the newsletter itself.
Focus on one discoverable channel — usually organic social — to test what resonates and consistently drive new readers. Once you see strong engagement (opens, clicks, replies), layer in paid acquisition to accelerate growth.
How do you calculate the value of a newsletter subscriber?
Subscriber value (LTV) is the total revenue a subscriber generates over time.
That typically includes:
- ad revenue per subscriber
- product or service conversion rates
- affiliate or partnership revenue
For many newsletters, this lands between $5 and $25 per subscriber, though B2B audiences can be higher.
If you don’t know this number, you can’t make smart decisions about growth or acquisition spend.
How much does it cost to acquire a newsletter subscriber through paid ads?
It depends on what that subscriber is worth.
Across many newsletter operators, paid acquisition costs often land between $1 and $3 per subscriber. The only number that matters is how that compares to your LTV.
If a subscriber is worth $10 and you can acquire them for $3, you can scale. If not, growth gets expensive quickly.
Why isn’t my newsletter growing even though I publish consistently?
Because newsletters aren’t discoverable by default.
Publishing more content doesn’t drive growth if there’s no distribution bringing new readers in. Most newsletters plateau because they aren’t feeding the top of the funnel through social, partnerships, or paid channels.
Consistency matters, but only if people can actually find you.
What is a good open rate for a newsletter before scaling paid growth?
As a general benchmark, you want to see:
- ~50%+ open rate
- ~5–10%+ click-through rate
- consistent engagement (replies, clicks, audience signals)
These indicate the product is working. If engagement is low, paid growth will usually amplify the problem instead of fixing it.
When should I start using paid ads to grow my newsletter?
Start once the fundamentals are working.
You should have:
- a clear understanding of subscriber value
- strong engagement in your newsletter (opens, clicks, replies)
- proof of traction on at least 1 social channel
Paid ads don’t fix weak newsletters. They scale ones that already work.
Which social media platform is best for growing a newsletter audience?
The best platform is the one you can execute consistently and scale.
For most operators, that starts with LinkedIn or Twitter/X for B2B audiences, and TikTok or Instagram for broader reach. Focus on one channel that drives consistent subscriber growth, then double down.
Which paid advertising platform works best for newsletter subscriber growth?
For most newsletters, that’s Meta (Facebook and Instagram).
It works because the audience is massive and performance is predictable at scale. Most large newsletters use it to drive tens of thousands of subscribers per month.
How long does it take to grow a newsletter to 100,000 subscribers?
It depends on your distribution and budget, but it can happen faster than most people expect.
Milk Road, for example, grew from 10,000 to 250,000 subscribers in under a year using strong content and paid acquisition. Most newsletters take longer because they don’t invest in distribution early or try to scale before the economics work.
