Retention is not simple. Between us and our partners at Pixel Theory, we run email and SMS for a long list of consumer brands, gut health company Kepos, supplement brand Optimize Minerals, Heirloom Coffee Roasters, and plenty more you'd recognize if we named them. Every account has its own flows, its own segments, its own quirks. There is no single lever that fixes retention.

Except there sort of is.

If we had to pick one change to make in your Klaviyo or Attentive account this week, before touching a subject line, a discount code, or a new flow, it's this: you are not emailing and texting your non-buyers and one-time buyers nearly enough.

Every account has it. It's not your VIPs, and it's not your cold, unengaged list either. It's the segment sitting quietly in the middle: people who have never purchased, and people who have purchased exactly once.

We call it the secret audience because almost no brand treats it like the asset it is. Most flows are built to impress this group for two weeks (a welcome series, maybe a post-purchase sequence) and then dump them back into the same generic newsletter cadence as everyone else. From that point on, a person who bought once gets treated exactly like a person who has bought twelve times and a person who has never bought at all.

That's backwards. This audience already did the hard part. They gave you their email or phone number, or they handed over their card once. They are not loyal yet, but they are curious, and curiosity has a shelf life. Across the accounts we run, this is consistently the highest-intent, most under-messaged segment on the list.

Here's the reveal: this audience should be getting emailed and texted roughly five times more often than most brands currently do it.

Not five times more than your best customers. Five times more than what you're doing right now for people who haven't purchased or have purchased exactly once. If your general list gets two emails a week, this segment should be getting the equivalent of ten touches in that same window, spread across education, social proof, replenishment logic, second-purchase incentives, and product story. A subscription coffee brand needs this person to understand why the roast is worth reordering. A supplement brand needs this person to understand why day 30 feels different than day 3. A gut health brand needs this person to actually get to the point where they feel the result. None of that happens in a three-email welcome series.

It's not negligence, it's instinct. Marketing teams worry about fatiguing subscribers, so they cap send frequency across the board and apply it evenly. But fatigue isn't a list-wide phenomenon. It's segment-specific. Your best customers can handle a lighter touch because the relationship is already established. Your never-purchased and one-time-purchased segments need the opposite: more information, more proof, more reasons, more chances to convert, delivered more often, because the relationship hasn't been built yet.

Treating both groups the same is the single most common retention mistake we see, and it's consistent across every category we've worked in, supplements, coffee, gut health, and beyond.

You don't need a new platform or a redesign to fix this. You need three things.

Build a live segment for anyone with zero orders or exactly one order. Exclude everyone else. This is the only audience this exercise is about.

Take your welcome and post-purchase flows and stretch them. Where you have three emails, build ten. Where you have zero SMS touches, add several. Fill the extra volume with product education, use-case stories, reviews, and a clear nudge toward the second purchase, not just more discounts.

3. Match cadence to intent, not comfort

Aim for roughly five times the frequency this segment is getting today. If that feels aggressive, that's usually a sign it's overdue.

There are a hundred worthwhile retention projects: win-back flows, VIP tiers, SMS-only offers, loyalty programs. All of them matter. But none of them move the needle as fast as fixing how often you talk to the people who are closest to becoming real customers. If you do only one thing on the retention side this week, find your non-purchasers and one-time purchasers, and start talking to them five times more than you are right now.