I've had three CFO-level calls in the last 30 days that sounded almost identical.
Different brands. Different products. Different agencies running their paid media.
But the conversation was the same:
"Our blended CAC is up 60% year over year. We're spending more to get the same revenue. Meta is broken. TikTok shop isn't converting. And we just lost a chunk of attribution data after the last iOS update. We don't know what's working anymore."
If you're nodding right now — you're not alone. And it's not your media buyer's fault.
After working with 200+ ecommerce brands and watching $130M flow through email channels over the last 4 years, I can tell you exactly what's happening. And more importantly — what to do about it.
What's actually broken (and why it's not going back)
Three forces are quietly stacking on top of each other:
1. The auction is full.
Meta, Google, and TikTok have more advertisers than ever competing for the same eyeballs. CPMs aren't spiking because the platforms are evil. They're spiking because supply is fixed and demand is exploding. AI tools have made it 10x easier for new brands to launch and start bidding. You are now competing with every single one of them.
2. Attribution is a guessing game.
Post-iOS 14, post-cookie deprecation, the data you're optimizing against is partially fiction. You're telling Meta "spend more on the campaigns that worked" — but Meta doesn't actually know which ones worked anymore. So it spends more to figure it out. That cost gets passed to you.
3. Your customers don't trust ads.
The average consumer sees 4,000–10,000 ads a day. The cognitive shutters are down. People don't buy from ads anymore. They buy from brands they recognize. And recognition doesn't come from one impression — it comes from showing up in someone's life over and over.
The brands winning right now figured out one thing the losers haven't:
Paid ads are no longer a customer acquisition channel. They're a customer introduction channel.
The acquisition happens after. In the inbox.
Why email is the leverage point nobody is using correctly
Here's the math that should keep you up at night:
The average ecommerce brand spends 70–80% of their marketing budget on paid acquisition.
The average ecommerce brand generates 20–25% of revenue from email.
The brands we work with that flipped that ratio? They're sitting at 40–55% of revenue from email — and they sleep at night when Meta has a bad week.
Email isn't a "nice to have" anymore. It's the only marketing channel where:
You own the audience (no algorithm change can take them away)
You don't pay per send the way you pay per click
Trust compounds with every send instead of decaying
Your LTV expands without your CAC moving an inch
When ad costs go up, email becomes more valuable. Not less. Because every dollar you spend acquiring a customer needs to do more work — and email is what makes it work.
If you're treating email like a sidekick to your paid strategy, you've got the org chart upside down.
What to do this week (not next quarter)
Look — I'm not going to tell you to "invest in email" and leave you hanging. Here's exactly what to do, starting today:
1. Audit your welcome flow this week.
Pull your last 90 days of welcome flow revenue. Divide it by the number of new subscribers. If that number is under $3 per subscriber, your welcome flow is broken. Most brands' welcome flows are doing 40% of what they should be. Fix this and you've just unlocked free revenue from traffic you already paid for.
2. Stop sending one email a week.
The brands plateauing at 20% email revenue are sending 4–6 campaigns a month. The brands hitting 40%+ are sending 4–6 a week. The reason most owners are scared to "email more" is they've never built emails worth opening. Send value content — recipes, founder stories, tips, behind-the-scenes — between the promos. Your unsubscribe rate goes down, not up.
3. Segment your list by buying behavior, not demographics.
Most brands segment by "engaged" vs. "unengaged." That's lazy. Segment by: bought in last 30 days, bought 31–90 days ago, bought once vs. multiple times, browsed but didn't buy. Send each group a different message. We've seen this single change lift email revenue 25–40% in 60 days.
4. Build a real popup — not a 10% off Bandaid.
If your popup is just "10% off your first order," you're training people to wait for discounts and torching your margin. Test a value-based capture: a quiz, a guide, a founder note. Brands we've worked with switched and saw capture rates go up while their first-order margin protected itself.
5. Treat your list like an audience, not a transaction queue.
Send founder-led emails. Tell stories. Be a brand, not a discount bot. People don't unsubscribe from brands they trust. They unsubscribe from brands they don't recognize anymore.
6. Move your "send time optimization" budget into copy.
Nobody opens an email because it arrived at 10:47 AM instead of 11:03 AM. They open it because the subject line earned the click. Spend your effort there.
The real cost of not figuring this out
Every quarter you delay treating email as a primary channel, ad costs eat another point of margin.
By the time you decide to "get serious about email," you'll be doing it from a worse cash position, with a colder list, and competitors who already did the work.
The brands that survive the next 18 months won't be the ones with the best media buyers.
They'll be the ones who built a relationship with their customers — and emailed them like it mattered.
Because it does.
P.S. If you want a brutally honest look at where your email program is leaving money on the table, grab a time here " I'll personally take a look. No pitch — I just like fixing broken flows.
