SMS Marketing Best Practices

SMS marketing best practices for DTC brands

SMS is the highest-engagement channel in ecommerce and the easiest one to ruin. It lands in the most personal place a brand can reach, it gets read within minutes, and it is far less forgiving than email. An unhappy email subscriber quietly stops opening. An unhappy SMS subscriber opts out, and they're gone for good.

That asymmetry is why SMS rewards discipline more than volume. Here's what the discipline actually looks like.

Get consent properly, or nothing else matters

In the US, texting a customer requires clear, explicit opt-in. Not a pre-ticked box. Not a phone number quietly captured at checkout and repurposed for marketing. The subscriber has to knowingly agree to receive marketing texts, and your signup unit has to say so plainly: who is texting them, what they'll receive, roughly how often, and how to stop.

This isn't just a legal box to tick. Consent quality is the single biggest predictor of whether an SMS program makes money. A list built from unambiguous opt-ins engages. A list assembled by technicality generates complaints, carrier filtering and, eventually, real legal exposure. Include the standard "message and data rates may apply" and "reply STOP to opt out" language, honour every opt-out immediately, and keep an auditable record of when and how each subscriber consented.

Make the opt-in worth something

Nobody hands over their mobile number for "updates." The brands that grow SMS lists fastest offer a real reason: an exclusive discount, early access to drops, VIP treatment, first shot at restocks. Then they deliver on that promise. The offer you make at signup sets the expectation for the entire relationship, so promising "insider access" and then sending three promos a week is how you manufacture opt-outs.

Respect the clock

Quiet hours matter more than most brands realise. A text at 11pm doesn't just fail to convert, it actively damages the relationship, and in the US there are rules about it. Send within reasonable local hours for the recipient, not for you. A subscriber's time zone is a basic segmentation requirement in SMS, not an advanced one.

Segment from day one

The fastest way to burn an SMS list is to blast every subscriber the same message. Group by purchase history, browse behaviour, location and loyalty status, and the messages start feeling personal instead of intrusive. A back-in-stock alert sent to the person who actually viewed that product is a service. The same volume of generic promotion is an unsubscribe.

Because SMS carries a real per-message cost, segmentation isn't just a quality decision, it's a financial one. Every text you send to someone who was never going to buy is money spent on annoying a customer.

Let flows carry the load

The revenue in SMS is concentrated in automated, behaviour-triggered flows rather than in broadcasts. The ones that consistently earn their cost:

• Cart and checkout abandonment — the highest-intent moment you have.

• Back-in-stock alerts — someone explicitly asked to be told. This is close to a guaranteed open.

• Shipping and delivery updates — genuinely useful, and they build tolerance for the promotional texts that follow.

• Replenishment reminders — timed to when a consumable actually runs out.

• Price-drop alerts — on products the subscriber viewed.

Two-way conversation matters too. If a customer can reply to a text and get a real answer, SMS becomes a service channel rather than a broadcast one, and the entire relationship changes.

Write like a person

SMS is the one channel where corporate copy is instantly obvious and instantly resented. Your message arrives in the same thread as texts from the recipient's family. Something that reads like a press release is jarring there in a way the identical words never would be in an inbox. Keep it short. Keep it plain. Identify the brand immediately so nobody has to wonder who is texting them, and put the single most useful piece of information first. If a message needs a paragraph to make sense, it was an email.

And always give people a way to say "less, please" rather than only "stop". A preference option that lets someone drop to occasional messages will quietly save subscribers who would otherwise have opted out of everything.

Restraint is a growth strategy

The instinct when a channel works is to use it more. With SMS, that instinct is wrong. Every additional text raises the probability of an opt-out, and an opt-out is permanent. Fewer, better-timed messages will out-earn a higher-volume program almost every time, because the list survives.

Don't run it as a separate channel

The most common structural mistake is running SMS on its own calendar, managed by someone who doesn't own the email calendar. The result is the same promo arriving by email and text within an hour of each other, which doubles the cost and the irritation without doubling the revenue. Email and SMS need one customer view, shared suppression rules, and a single frequency cap. We cover exactly how to structure that in email and SMS orchestration.

Grow the list without poisoning it

SMS list growth is where quality is won or lost, because a badly acquired subscriber is worse than no subscriber at all. They cost you money on every send and they're statistically likely to opt out, taking your engagement metrics down with them.

The units that work are the ones that make the value exchange obvious. A well-designed pop-up that offers a genuine reason to subscribe. A keyword opt-in ("text JOIN to...") that customers can complete in two taps. A checkout capture that clearly asks for marketing consent rather than burying it. And, ideally, a single flow that captures email and SMS consent at the same moment, so you can reach the same person on whichever channel they actually respond to.

What doesn't work is anything that acquires a number without a clear, knowing agreement. It inflates the headcount, hurts the economics, and creates real exposure.

Measure the things that predict survival

Most SMS reporting fixates on click-through rate, which tells you very little about whether the program has a future. The numbers that actually matter:

• Opt-out rate per send. This is your early-warning system. A creeping opt-out rate means you're over-sending or under-targeting, and every point of it is permanent attrition.

• Revenue per message sent. Because SMS has a real per-message cost, this is the only honest measure of whether a send was worth making.

• Net list growth. Growth minus opt-outs. A list that's growing on paper while churning underneath is a list in decline.

• Flow versus campaign revenue. A healthy program earns a large share from automated, behaviour-triggered flows. If nearly all your SMS revenue comes from broadcasts, the automated layer is underbuilt and you're leaving the cheapest revenue uncollected.

Frequently asked questions

How often should you send marketing texts?

Far less often than email. For most DTC brands, a small number of well-chosen sends per month plus behaviour-triggered flows outperforms a heavy broadcast calendar, because opt-outs in SMS are permanent and cost you the subscriber entirely.

What are the compliance rules for SMS marketing?

You need clear, explicit opt-in for marketing messages, disclosure of what the subscriber is agreeing to, message and data rate notices, an immediate and honoured opt-out mechanism, and respect for quiet hours. Keep records of how and when consent was obtained.

Build a compliant, high-converting program with our SMS services, coordinated with email.