SMS Marketing Best Practices for Ecommerce: How We Actually Use SMS

SMS should be reserved for messages that deserve to interrupt someone. That is the biggest difference between SMS and email. An email can sit in an inbox until the customer is ready to look at it. A text message actively pings their phone.

That makes SMS extremely powerful. It also means the tolerance for irrelevant messages is much lower.

For proactive promotional SMS campaigns, our default at Magicianly is simple: use SMS primarily for launches, restocks and sales or events where the urgency is real.

We do not take every email campaign, shorten it to 150 characters and blast it to the SMS list. That is one of the fastest ways to turn a valuable channel into background noise.

By Emiel Dingemans, Founder of Magicianly

SMS Is Not Shorter Email

A lot of brands build their SMS strategy like this:

1. 1plan the email calendar;
2. 2send an email;
3. 3copy the offer;
4. 4shorten it;
5. 5send the same thing by SMS.

That is not a channel strategy. It is duplication.

Email and SMS have different jobs. Email is better for:

• education;
• storytelling;
• detailed product explanation;
• longer sales arguments;
• frequent brand communication;
• lifecycle content.

SMS is better when:

• timing matters;
• the message is immediately useful;
• the customer should know now;
• the action window is short.

The question before every promotional text: does this deserve to make somebody's phone buzz?

If the answer is no, send an email.

1. Get Real SMS Consent

This is not optional. Email consent does not automatically give you SMS consent. A customer must specifically agree to receive text messages. That means:

• collect SMS permission separately;
• explain what the person is signing up for;
• make SMS optional;
• identify the brand;
• provide an easy way to opt out;
• respect local regulations.

Do not add numbers from:

• purchased lists;
• lead-generation databases;
• email-only subscribers;
• customer records without proper SMS permission.

This section is general marketing guidance, not legal advice. SMS laws vary by country and region, so have your legal or compliance team review your actual program.

2. Protect the Interruption

An SMS subscriber has given you a much more intimate permission than an email subscriber. Do not waste it.

The worst SMS programs usually have one thing in common:

The brand sends because the calendar says it is time to send.

There is no meaningful reason the customer needed a text. That creates a dangerous pattern. The customer starts seeing the brand name and thinking "another promotion."

Eventually they stop paying attention. Then unsubscribe rates increase. Then the channel that used to feel immediate starts behaving like another ignored inbox.

3. Use Promotional SMS for High-Intent Moments

For normal promotional campaigns, we usually reserve SMS for three categories.

Product Launches

The product is actually new, and the customer benefits from knowing immediately: a limited launch, an early-access drop, a new collection or a highly anticipated product.

Restocks

The customer wanted something that was unavailable and now it is available again. That is naturally time-sensitive, especially if inventory is limited.

Sales and Major Promotional Events

SMS is useful when there is a legitimate deadline: a sale going live, a sale ending tonight, a Black Friday offer, a flash promotion or a short VIP window.

The urgency exists outside the copy. You are not inventing it. That is the type of urgency SMS is built for.

4. Do Not Mirror Your Email Frequency

We regularly recommend ecommerce brands send multiple email campaigns per week. That does not mean we recommend multiple SMS campaigns at the same frequency.

SMS is more intrusive, the cost per send is higher, and unsubscribing takes the customer out of a very valuable channel.

There is no universal number like "every ecommerce brand should send exactly two texts per week." That is the wrong way to think about it. Frequency should come from:

• the number of genuinely SMS-worthy events;
• customer behavior;
• unsubscribe trends;
• conversion;
• list growth;
• seasonality.

Some weeks may justify more. Other weeks may justify none.

Protecting the list matters more than hitting an SMS quota.

5. Do Not Give Every Customer the Same Offer

Segmentation matters here too. One of the patterns we use in email also applies to SMS:

Spend the incentive where it changes the decision.

If an existing customer regularly buys at full price, giving them an extra first-order discount makes no sense. A non-buyer who has been engaged for months may need that incentive.

So instead of one SMS, one audience and one offer, think about customer state and apply the same Klaviyo segmentation logic you use in email:

• never purchased;
• first-time buyer;
• repeat customer;
• VIP;
• subscriber;
• lapsed customer;
• product-interest segment.

The message can be almost identical while the offer or CTA changes.

6. Keep the Message Focused

A text message should normally do one job. Not:

• announce a product;
• tell the founder story;
• explain the ingredients;
• add three products;
• mention loyalty points;
• push a second offer.

Pick the action, then remove everything that does not help the customer take it. A simple structure works:

Brand + reason to care + action

Demo Brand: The product you asked about is back in stock. Shop before it sells out again: [link]

Demo Brand: Our Black Friday offer is live. Save 25% through midnight: [link]

Those are structure examples only, not copy to publish as written.

7. Identify the Brand

Do not assume the customer remembers which short code or sending number belongs to you. Make the brand obvious, especially early in the relationship.

The subscriber should never have to think "who is texting me?" Clear identification is also part of responsible SMS compliance.

8. Respect Quiet Hours

SMS should arrive in the recipient's local daytime hours, and quiet hours rules vary by location. In the United States, the federal TCPA generally allows solicitation between 8 a.m. and 9 p.m. local time, but individual states can be stricter.

Several markets and platforms recommend a safer operating window closer to 9 a.m. to 8 p.m. local time, because compliance rules and customer tolerance are not always identical.

Do not deliberately schedule promotional texts at the edge of the legal window simply because you technically can. Your customer experience matters too.

9. Make Opting Out Easy

Trying to trap people on an SMS list is shortsighted. If someone does not want the messages, let them leave. Make sure the program supports the appropriate opt-out mechanism, such as STOP or the relevant unsubscribe method for the platform and market.

A smaller SMS list of people who actually want your messages is more valuable than a bloated list that resents hearing from you.

10. Coordinate SMS With Email Instead of Duplicating It

One of the best ways to use SMS is as an escalation channel.

Product launch

Email carries the full story, images, benefits and product education. SMS says the launch is live.

Restock

Email explains the product and why it sold out. SMS says it is back.

Sale ending

Email carries more context, products and offer details. SMS says there are only a few hours left.

Different channel. Different job. Same customer journey.

What About Automated SMS?

Our launches, restocks and sales rule is mainly about proactive promotional campaigns. Triggered and transactional SMS can have different jobs.

Depending on the brand, consent setup and platform, SMS may also support moments such as:

• abandoned checkout;
• order updates;
• subscription reminders, which matter more for subscription brands;
• back-in-stock triggers;
• transactional notifications.

The same standard applies: the text should be useful enough to justify the interruption.

Use Smart Sending, suppression logic and quiet hours so customers do not receive multiple texts because several automations happen to fire at once.

SMS Metrics We Actually Care About

SMS does not have the same open-rate model as email. Focus more on:

• click rate;
• conversion;
• unsubscribe rate;
• revenue per recipient;
• incremental behavior;
• list growth;
• repeat purchase behavior;
• whether SMS is helping or simply claiming credit for an order.

A high attributed-revenue number is not useful if every campaign simultaneously burns through the subscriber base.

When Should Email Win Over SMS?

Use email when:

• the content needs explanation;
• visuals matter;
• the message is educational;
• urgency is low;
• the audience does not need to act today;
• the brand simply wants to stay top of mind;
• you are sending because the team feels it needs another campaign.

Sending something unnecessary by email is usually recoverable. Sending something unnecessary directly to somebody's phone gets annoying much faster.

Should European Brands Use WhatsApp Instead?

Sometimes. For brands with a meaningful European audience, WhatsApp can be worth testing alongside or instead of certain SMS use cases. The choice depends on:

• geography;
• consent;
• platform availability;
• audience behavior;
• message type;
• cost;
• operational setup.

Do not add WhatsApp marketing simply because it is another channel. Use it when the customer experience genuinely improves.

Our SMS Framework

Before sending a promotional text, ask:

1. 1is this genuinely time-sensitive?
2. 2would the customer want to know now?
3. 3is SMS better than email for this message?
4. 4is this the right customer segment?
5. 5is the offer necessary?
6. 6is there one clear action?
7. 7are we sending at an appropriate local time?
8. 8are we protecting consent and opt-outs?

If you cannot answer those questions confidently, do not send the SMS.

The goal is not maximum SMS volume. The goal is to build a channel customers still pay attention to when the message actually matters.