Editorial: Deliverability Is Now the Real Cost Center in Email
For a long time, email growth felt straightforward. If results dipped, you assumed the message was the problem, the subject line went stale, the offer lost its edge, or the list needed better segmentation. You changed what people saw, and things usually improved.
That logic has stopped working.
Whatʼs changed is whether the email shows up at all. The brands still doing well in email are outperforming because their messages keep landing in inboxes. Quietly, without drama, theyʼve built sending systems that donʼt trigger filters, donʼt accumulate complaints, and donʼt lose trust over time.
Most email programs donʼt fail all at once. They fade. Open rates slide a little each month. Clicks spike one week and disappear the next. Revenue becomes unpredictable. Nothing looks broken enough to panic, which is why teams rarely look at the underlying system. Instead, they rewrite campaigns, test new angles, and increase send volume. The visible work accelerates while the invisible damage continues.
By the time deliverability becomes the obvious suspect, inbox providers have already decided what kind of sender you are. Every campaign is now a small trial for relevance and trust that used to be assumed. Thatʼs why the fixes feel frustrating. Youʼre not correcting a mistake. Youʼre rebuilding credibility.
You can see this shift in how deliverability guidance is written now. What used to sound like optional advice reads more like rules. Authentication must be correct. Complaints must stay low. Engagement must be consistent. Thereʼs very little room for sloppiness, and almost none for shortcuts.
This has turned deliverability into the real cost center of email because neglect compounds. Teams that treated email like infrastructure to be well-maintained now find themselves insulated from chaos elsewhere in the marketing stack. And that turns out to be the advantage. As paid channels grow louder and less predictable, the inbox rewards restraint. Fewer reckless sends. Cleaner lists. More respect for the system that decides who gets seen. In this environment, email wins because itʼs dependable.
Feel free to book a time here with their team.
Case Study: How Cheryl’s Herbs Generated $37,000 in Email Revenue in 90 Days
Cheryl’s Herbs, a long-running herbal wellness brand serving both retail and wholesale customers, wanted to grow revenue from its existing audience without overhauling its entire marketing stack. Email was already in use, but it played a limited role. Sends were largely promotional, segmentation was minimal, and it was difficult to tell which emails were actually driving sales.
Performance followed effort. When promotions were timed well or activity increased, revenue showed up. When sending slowed or campaigns missed the mark, results dropped off. There was no steady baseline the team could rely on and no clear view into which customer groups were responding to what.
The work focused on fixing that structural gap. The email list was reorganized around how customers actually bought: wholesale buyers, retail customers, and inactive subscribers. Each group was treated as a distinct audience rather than part of a single broadcast list.
Messaging was adjusted accordingly. Wholesale customers received product availability updates, bulk-purchase offers, and educational content relevant to resellers. Retail customers were guided through product benefits, usage, and repeat-purchase prompts. Automated sequences were put in place to handle onboarding, re-engagement, and follow-ups, reducing dependence on one-off promotional blasts.
Over three months, this approach generated $37,000 in revenue attributed directly to email, without increasing send frequency. More importantly, results became easier to interpret. The team could see which segments converted, which messages performed, and where email reliably contributed to sales.
The shift wasn’t just the revenue number. It was predictability. Email moved from an occasional push channel to a system the business could plan around, measure, and improve with intent.
The reason most newsletters plateau is simple. Theyʼre built like campaigns, not like businesses. The meaningful shift right now isnʼt another optimization trick. Itʼs a rethink of format. Brands that are seeing momentum are designing newsletters to function like media products, where value comes before conversion.
Build exclusive niche editions: Tightly scoped newsletters are emerging as a premium engagement layer. By narrowing the audience and the promise, these editions attract higher-intent readers and create stronger feedback loops. The goal is not reach. Its relevance.
Monetize the subscriber directly: Brand newsletters are increasingly standing on their own as paid or premium channels. Subscribers pay for insight, perspective, or industry signal. The relationship shifts from promotion to value delivery, which changes how the inbox perceives the sender.
Use newsletter as an editorial layer: Brands experimenting with newsletters are leaning into clearer storytelling and audience ownership. The writing reads like a publication. That editorial discipline often feeds back into better engagement across the rest of the email program.
This matters now for three simple reasons. Inbox providers reward engagement. Subscribers increasingly treat newsletters like media. And value-first formats tend to lift opens, retention, and long-term loyalty without increasing send volume.
Metric Benchmark
Source: MailerLite
Closing Note
If any of this felt familiar, itʼs probably because youʼve lived it. Email works until it doesnʼt. And when it doesnʼt, the instinct is to push harder instead of stepping back.
Most of the fixes here arenʼt big moves. Theyʼre boring ones. Clean things up. Decide what email is actually for. Stop using it to compensate for everything else.
Thatʼs usually enough to make it work again.
See you next week.
📣 Forward or Reply
If you liked this edition of Growth Curve, forward it to a founder who needs to stop renting audience — and start owning it.