SMS Marketing for Shopify: Setup, Cost, and Is It Legal? (2026 Guide)
Email gets opened maybe 30% of the time. A text message gets opened 98% of the time, usually within three minutes. That gap is the entire reason SMS marketing exists—and the reason most small Shopify brands leave money on the table by ignoring it.
But I get why people hesitate. SMS feels riskier than email. It costs money per message. And there's a nagging worry in the back of your head: is this even legal? Send the wrong text to the wrong person and you've read the horror stories about $500-per-message lawsuits.
So let me clear all of that up in one place. In this guide I'll walk through the three things you actually need to know before you send a single text: how to set SMS up on your Shopify store, what it really costs once the hidden fees are included, and exactly how to stay compliant in 2026. No fluff—just the parts that matter.
Let's get into it.
Does Shopify Even Have SMS Marketing?
Short answer: yes. Shopify Messaging lets you send SMS marketing campaigns natively to customers in the US and Canada—no third-party app required to get started. You collect phone numbers, you send a campaign, Shopify bills you per message.
But "native" and "enough" aren't the same thing. The built-in tool is great for one-off campaign blasts—a flash sale, a product drop, a holiday promo. Where it falls short is automation. The real money in SMS isn't in blasts; it's in the automated flows that fire on their own: abandoned cart, back-in-stock, shipping updates, win-backs.
For those, you'll want a dedicated SMS app that plugs into Shopify's checkout and Flow. I've broken down the best of them in the best SMS marketing apps for Shopify—but the quick version is that native Shopify SMS is fine for testing the waters, and an app is what you graduate to once it's working.
Here's how I'd think about it: start native to prove SMS converts for your brand, then move to an app once your automated flows are worth building out.
How to Set Up SMS Marketing on Shopify (Step by Step)
Step 1: Build your consent mechanism first. This is the part everyone skips, and it's the part that keeps you out of trouble. Before you send anything, you need a legitimate way for people to opt in. The two best sources:
A checkbox at checkout ("Text me order updates and offers")—Shopify supports this natively.
A dedicated SMS popup or keyword ("Text JOIN to 12345 for 15% off").
Never buy a phone list. Never import numbers people gave you for something else. Consent has to be specific to marketing texts, and I'll explain exactly why in the compliance section below.
Step 2: Register your sending number. To send marketing SMS in the US and Canada, your number has to be registered—either a toll-free number (the simplest path for most small brands) or 10DLC (a local number registered through The Campaign Registry). Your SMS app or Shopify handles most of this, but it takes a few days for carrier approval, so start early.
Step 3: Choose native vs. app. Decide based on what you're actually going to send. Campaign blasts only? Shopify Messaging is enough. Automated flows? Pick an app that integrates with Shopify checkout and Shopify Flow so your texts can trigger on real store events.
Step 4: Build your core automations. If you do nothing else, build these four:
Abandoned cart — fire a text 30–60 minutes after a cart is left. This is the single highest-ROI SMS flow. Pair it with email for even better recovery, which I cover in Shopify cart abandonment solutions.
Welcome / first offer — deliver the discount you promised at opt-in, immediately.
Shipping and delivery updates — technically transactional, hugely appreciated, and they keep your number familiar so marketing texts don't feel like a surprise.
Back-in-stock alerts — some of the highest-converting texts you'll ever send, because the intent is already there.
Step 5: Set your guardrails. Turn on quiet hours (more on the exact window below), make sure "Reply STOP to opt out" is in your first message, and cap your send frequency. I'll die on this hill: fewer, better texts beat a firehose every time.
Step 6: Measure and cut what doesn't work. Track revenue per message, not open rates. SMS open rates are always near-universal, so they tell you nothing. Revenue per send tells you whether a flow earns its keep. If a campaign nets less than it costs to send, kill it or fix it.
How Much Does Shopify SMS Marketing Actually Cost?
This is where people get surprised, so let me give you the real numbers—including the fees nobody advertises.
The per-message rate. SMS generally runs $0.01–$0.05 per message in the US, depending on your platform and message length. Shopify Messaging bills per message monthly; as a rough benchmark, sending 1,000 messages runs in the ballpark of tens of dollars. Dedicated apps often quote a lower base rate—roughly $0.007–$0.018 per SMS—but read the next two lines before you celebrate.
Carrier pass-through fees. On top of the per-message rate, the carriers (AT&T, T-Mobile, Verizon) charge their own pass-through fee on every registered message—roughly $0.003–$0.005 each. It sounds trivial until you do the math: 10,000 messages a month is an extra $25–$50 in carrier fees alone, regardless of which platform you use.
The number fee. Heads up on a 2026 change: starting with your first Shopify bill on or after August 1, 2026, Shopify adds a $2.15/month charge per approved toll-free number used for SMS marketing in the US and Canada. Small, but worth knowing it's coming.
App subscriptions. Beyond usage, apps range from pay-as-you-go (no monthly fee, you just pay per message) to around $29/month for mid-market tools, up to custom enterprise pricing. Plenty of strong options sit comfortably under $100/month for a small brand's volume—which is exactly the price band most of you are searching for, and exactly what I compare in the best SMS marketing apps for Shopify.
So what should you budget? For a small brand sending a few thousand messages a month, realistically plan for $30–$100/month all-in once you add usage, carrier fees, and any subscription. The good news: SMS revenue per send is high enough that a working setup pays for itself many times over. Treat it like the email flows that fund themselves—an investment, not an expense.
You can see Shopify's own per-region breakdown on its SMS marketing pricing help page.
Is SMS Marketing Legal? (Yes—If You Follow These Rules)
Here's the honest truth: SMS marketing is completely legal, and also the fastest way to get sued in ecommerce if you're careless. The law that governs it in the US is the Telephone Consumer Protection Act (TCPA), and the penalties are real—$500 to $1,500 per message for violations. That's not a typo, and that's why compliance isn't optional.
The good news is that staying compliant is genuinely simple. Follow these and you're fine.
1. Get prior express written consent. Before you send a marketing text, the person must have explicitly agreed to receive marketing texts—in writing (a checked box or a keyword opt-in counts). Consent given for one thing (say, order updates) doesn't automatically cover promotional blasts. Be specific at the point of opt-in: state that they're signing up for recurring marketing messages, and note that message and data rates may apply.
2. Make opting out effortless. "Reply STOP to unsubscribe" is the standard, and carriers automatically honor STOP, UNSUBSCRIBE, QUIT, CANCEL, and END. When one comes in, it has to be processed immediately. As of an April 2025 rule change, customers can also revoke consent by any reasonable method—a plain-language reply, an email, a phone call—so don't force people through hoops to leave.
3. Respect quiet hours. Only send marketing texts between 8 a.m. and 9 p.m. in the recipient's local time zone. Some states are stricter—Connecticut, for example, narrows the window to 9 a.m.–8 p.m. and requires express written consent for all outreach. When in doubt, tighten the window.
4. Identify yourself. Every marketing message should make it obvious who it's from. No mystery texts.
One thing that actually got simpler: the FCC's proposed "one-to-one consent" rule was thrown out by a federal court in January 2025, so a single clear opt-in can still cover your brand without a tangle of separate consents. Don't read that as a loophole, though—the core rules above haven't budged.
If you want the primary source, the FCC's TCPA rules are the authority. But practically, if you use a reputable Shopify SMS app, most of this is built in—consent capture, STOP handling, and quiet-hours enforcement come standard. Your job is to not override the guardrails.
Where SMS Fits in Your Bigger Picture
SMS isn't a standalone play. It's the urgent layer on top of the channels you already run. Email does the storytelling and the long nurture; SMS does the time-sensitive nudge. Used together, they lift each other.
The brands that win with SMS treat it as one part of a retention system, not a megaphone. If you're building that system, it's worth reading how SMS connects to Shopify customer retention strategies and loyalty programs that create repeat buyers. And when you're planning your promo calendar, SMS is the channel you save for the moments that actually matter—which is exactly what the 2026 ecommerce sales calendar is for.
Send fewer texts. Make each one count. That's the whole game.
FAQ
Does Shopify have built-in SMS marketing?
Yes. Shopify Messaging supports SMS marketing campaigns natively for US and Canadian customers, billed per message. It's great for campaign blasts. For automated flows like abandoned cart and back-in-stock, most brands add a dedicated SMS app that integrates with Shopify checkout and Flow.
Is SMS marketing legal?
Yes, as long as you follow the TCPA: get prior express written consent before sending marketing texts, make opting out easy ("Reply STOP"), only send between 8 a.m. and 9 p.m. in the recipient's local time (stricter in some states), and clearly identify your brand. Violations carry $500–$1,500 in statutory damages per message, so compliance matters.
How much does SMS marketing cost on Shopify?
Expect roughly $0.01–$0.05 per message, plus carrier pass-through fees of about $0.003–$0.005 per message on top. Apps range from pay-as-you-go to around $29/month and up. A small brand sending a few thousand messages monthly should budget about $30–$100 all-in. Note: starting August 1, 2026, Shopify adds a $2.15/month fee per approved toll-free number in the US and Canada.
What's the best SMS app for Shopify under $100/month?
Several strong options fit under $100/month for small-brand volume, ranging from pay-as-you-go tools to plans around $29/month. The right pick depends on whether you need deep automation, native checkout integration, or the lowest possible per-message rate. I compare them directly in the best SMS marketing apps for Shopify.
Do I need customers' permission to text them?
Absolutely, yes. You need prior express written consent specifically for marketing texts—an opt-in checkbox at checkout or a keyword opt-in. Consent someone gave for order notifications does not cover promotional messages. Never buy or import phone lists.
Is SMS marketing getting phased out?
No. If anything it's growing, because it's one of the few channels with near-universal open rates and it isn't dependent on ad platforms or algorithm changes. What's changing is the compliance bar—regulators are tightening consent and opt-out rules, which rewards brands that do it properly.
SMS or email—which should a small brand start with?
Email first, because it's cheaper per send and does the heavy storytelling. Add SMS once email is working, and use it for the urgent moments: cart recovery, launches, and low-stock alerts. The two together convert better than either alone.
Related Resources
Want to go deeper? Check out these guides:
Shopify Cart Abandonment Solutions: How to Recover Lost Sales
Shopify Loyalty Programs: Turn One-Time Buyers Into Repeat Customers
Ecommerce Sales Calendar 2026: When to Launch Shopify Promotions
The Complete Shopify Conversion Rate Optimization Guide for Small Brands
For more on email and lifecycle marketing, Shopify apps and tools, customer acquisition channels, and conversion optimization, check out our topic pages.
