Is SMS Worth It for a DTC Brand?

Your SMS vendor's dashboard says texts drove a big slice of last month's revenue, and your finance lead wants to know why the bill keeps growing. Both can be true, and the answer decides whether SMS stays in your budget.

SMS is worth it for a DTC brand when it carries a narrow set of messages a shopper wants right now, such as an abandoned cart, a restock or a reorder reminder, and when the margin on those orders covers message fees, list churn and compliance work. It rarely pays you back as a second email channel that repeats every promotion. Think of SMS as the doorbell and email as the mailbox. Your customers answer the doorbell when a parcel arrives, and they disconnect it when it rings for flyers.

Nothing here is legal advice. Have counsel review every legal point before you launch.

When does SMS pay for a DTC brand?

SMS pays when the message is triggered by something the shopper just did, and it struggles when it is a scheduled blast to the whole list.

In Klaviyo's 2026 SMS benchmarks, drawn from more than 183,000 of its customers, automated flows were 7.6% of SMS sends and drove 45.2% of SMS revenue.

Your click data should point the same way. Klaviyo puts a good click rate at 9.65% for flows against 5.6% for campaigns. These are vendor figures using Klaviyo's own attribution, so read them as direction and leave proof of extra sales to your holdout test.

So keep SMS on a short list of messages, and start with these.

• Abandoned cart and abandoned checkout, sent within the hour.
• Back in stock, for shoppers who asked to be told.
• Replenishment reminders timed to when the product runs out, which ties into winning the second order in the first 90 days.
• Limited launches or drops, sent only to a segment that has bought before.

SMS is a weak fit when your average order value is low, your margin is thin, the product is bought once, or the only plan is to copy the email calendar into texts. If that describes you, put the budget into email flows first.

What does an SMS message cost?

An SMS message costs a platform fee per segment plus a carrier fee, and the total for a single US text on a published plan sits around one cent.

Postscript's pricing page lists the Professional plan at $500 a month with $0.007 per SMS and $0.024 per MMS, plus carrier fees it averages at $0.0033 per US SMS. Attentive's pricing page shows no prices, so a quote is the only way you can compare it.

Carrier fees change, and Postscript's carrier fee article shows that T-Mobile and AT&T also charge you for inbound replies on some number types.

If you're on Klaviyo, carrier fees are bundled into your plan rate, and its mobile messaging help article warns that some providers add carrier fees as a separate charge at billing. Ask every vendor for an all-in rate before you compare.

Length changes your bill too. Klaviyo bills per segment, and one segment holds 160 characters, or 70 when the text contains an emoji or special character, so a single emoji can double or triple the segments you pay for. Keep your marketing texts short and test them with and without emoji.

Which registration does a brand need before sending?

A brand needs a registered sending number before US carriers will deliver its texts reliably, and the type of number decides which registration applies.

Sender types differ.

• A 10DLC number, an ordinary 10-digit number used for business texting. Twilio's A2P 10DLC documentation says anyone sending from an application over a 10DLC number to the US must register, and if you don't register, your traffic gets more filtering and extra carrier fees.
• A toll-free number. Twilio states that toll-free numbers can't send SMS to the United States and Canada until verification is approved.
• A short code, a five or six digit number that carriers bill monthly, $750 a month on Postscript's pricing.

Most Shopify SMS platforms run the paperwork for you. Postscript, for example, assigns and verifies a toll-free number for you at install. Ask your vendor which number type you're on and who owns the registration if you ever leave.

What do TCPA consent rules require for marketing texts?

Marketing texts sent with automated tools generally need prior express written consent under the Telephone Consumer Protection Act, and the brand should be able to prove it for every number. Review the details with counsel.

The FCC rule at 47 CFR 64.1200 defines that consent as a written agreement, signed by your subscriber, that names the phone number and discloses that agreeing is not a condition of buying anything. An electronic or digital signature counts where federal or state law recognizes it. A checkbox or keyword opt-in can qualify if you build it correctly, and counsel should review your wording.

The FCC's one-to-one consent rule never took effect. It would have required consent to one seller at a time, for topics logically related to the sign-up. The Eleventh Circuit vacated it on 24 January 2025, holding that the FCC exceeded its authority, and the current eCFR text doesn't contain that wording. If you collect consent on your own site this changes little, but it matters if you buy leads or share sign-up forms with partners.

Opt-outs have firm rules, and they change on 25 November 2026. Today, a reply of "stop", "quit", "end", "revoke", "opt out", "cancel" or "unsubscribe" revokes consent, as does any other reasonable method, and you must honor it within ten business days at most. The FCC's new revocation rule, published 26 October 2026, lets a sender name one of three methods, such as a reply with one of those words, as the exclusive way to revoke, as long as every text discloses it. Even then, you must honor any of the seven words. A revocation sent in reply to a marketing text still covers all of that sender's marketing texts.

Ask counsel how the new rule applies to your program, and set your platform to suppress a number on the first opt-out reply, including plain-language replies such as "no more texts".

Carriers expect more of you. CTIA's Messaging Principles and Best Practices ask for a confirmation text after opt-in that names the program, gives customer care contact details, explains how to opt out, states message frequency and discloses any fees. Check your confirmation text against that list before your next send.

Which quiet hours and state laws apply?

The federal rule bars telephone solicitations before 8 a.m. or after 9 p.m. in the recipient's local time, and some states set tighter windows and caps. Other states have passed similar laws, so ask counsel which reach your texts.

Florida's Telephone Solicitation Act, section 501.059, defines a sales call to include a text message. Before a recipient can sue over texts, they must reply STOP, and you then have 15 days to stop. Damages run to $500 per violation, and up to three times that if willful.

Florida's section 501.616 bars commercial solicitation calls before 8 a.m. or after 8 p.m. and caps them at three per person in 24 hours on one subject. The text says phone calls, so ask counsel whether it reaches your texts.

Oklahoma's Telephone Solicitation Act of 2022, enacted as HB 3168, copies the 8 a.m. to 8 p.m. window and the three-in-24-hours cap for phone calls, with $500 in damages per violation. It exempts calls to people who have bought from you before. Ask counsel whether the act reaches texts and whether it has changed since 2022.

So set one send window for your whole list, 8 a.m. to 8 p.m. in each subscriber's time zone, and no more than one marketing text a day. The narrower window costs you little and saves you tracking which subscriber lives in which state, but ask counsel to confirm it for your list.

How do opt-outs change the economics?

Opt-outs change the economics because every unsubscribe is a subscriber the brand paid to acquire and now has to replace.

Klaviyo's 2026 SMS benchmarks chart unsubscribe rates by industry, so find your vertical there. If you lose about 1% of the list on each campaign and send four a month, that's roughly 4% of your list gone every month.

Replacing a subscriber costs you the pop-up tool, the sign-up discount and the ad spend that brought the visitor. For many brands, churn costs more than the message fees themselves, so treat frequency as a financial decision before it's a creative one. Price your cost per new subscriber before you approve a busier calendar.

A break-even calculation for an SMS program

The break-even point is the attributed revenue per message at which margin from the extra orders covers every cost of the program. The numbers below are illustrative and do not come from a CB/I client.

Use your own pop-up, discount and ad cost per new subscriber. At $10, the churn line alone becomes $8,000.

The incremental share decides your answer. It measures how much SMS-attributed revenue you would have lost without the text, and only a holdout test, where a random slice of the list gets no texts, can measure it. Hold back about 10% of your list as the control, and add campaigns only when the holdout shows extra orders. If you haven't run one before, start with how to design a holdout.

At a 20% incremental share, break-even rises to about $0.33 per message, double the first answer, so the same list can clear break-even or miss it on that one assumption. Before you read any attributed figure, check the platform's attribution window, as covered in how email and SMS earn more without sending more.

Frequently asked questions

How much does SMS marketing cost per month?

On Postscript's published Professional plan, a single US text costs about one cent including the average carrier fee, plus $500 a month for the plan, and MMS or long texts cost several times more.

Is the FCC one-to-one consent rule in effect?

No. The Eleventh Circuit struck it down on 24 January 2025, and it is not in the current regulation. Prior express written consent still applies, and the opt-out rules change on 25 November 2026, so confirm your consent language with counsel.

How many marketing texts a month is too many?

No public study with a disclosed sample sets a safe number. Watch the unsubscribe rate per send against Klaviyo's benchmark for your industry, and cut frequency when yours climbs above it.