SMS Marketing Best Practices in 2026

SMS (short message service) marketing entails sending short text messages to a group of customers to promote products or services. SMS refers to strictly text while MMS (multimedia messaging service) allows for longer content including multimedia elements such as images, videos, and audio.

Large and small businesses alike can capitalize on this marketing channel to reach customers in a quick and relatable way. This article will dive deeper into the importance of SMS marketing and tips for developing a solid text marketing strategy.

What is SMS marketing?

SMS (short message service) marketing is the practice of using text messages to promote your business. Unlike other marketing channels that compete for attention in crowded inboxes or feeds, SMS lands directly on a customer's phone — making it one of the most immediate ways to connect with your customers.

Businesses use SMS to:

• Promote products: Announce new launches, bestsellers, or seasonal collections straight to your customers' phones.
• Send updates: Keep customers informed about order confirmations, shipping status, or account changes with automated messages.
• Offer discounts: Share exclusive deals or promo codes that drive quick action.
• Drive urgent action: Create time-sensitive offers like flash sales or limited-stock alerts that encourage customers to act now.

Why is SMS marketing so important in 2026?

Text message marketing is one of the most immediate and engaging channels available to marketers. SMS messages go directly to your audience's phones, and unlike email or social media, they don't get buried in a feed or filtered into a promotions tab. That directness makes SMS especially effective for building customer relationships and driving quick action.

Here are the advantages that set SMS apart:

• 14% average click rate: That is the 14% average click rate with Mailchimp SMS2 across messages sent globally — engagement that few channels sustain at scale.
• Low unsubscribe rates: Mailchimp SMS Marketing has an average unsubscribe rate of 1.3%3, so a well-run list stays durable rather than eroding with each send.
• Measurable return: Mailchimp SMS e-commerce users saw up to a 22x ROI after launching their first SMS Marketing campaign4.
• Real-time reach: Messages are delivered and read within minutes, which is ideal for time-sensitive promotions or updates.
• Cost-effective: SMS campaigns are affordable to run, even for small businesses with limited budgets.
• Opt-in audience: Every subscriber on your list has actively chosen to hear from you, which means you're reaching people who already want your messages.

The channel also pairs well with what you already send. Mailchimp users saw up to a 2x higher click rate when they used both Email and SMS5.

What are SMS marketing best practices?

Using SMS campaigns can set you apart from competitors who aren't implementing this tool in their marketing efforts. Here are a few SMS marketing best practices to help guide your approach:

• Always obtain explicit consent from customers before sending SMS messages by implementing a clear opt-in process.
• Identify your brand in every message. Recipients should never have to guess who is texting them, and an unidentified sender reads as spam.
• Segment your audience based on demographics, preferences, and behavior to allow for targeted messaging.
• Keep SMS marketing messages concise so recipients quickly understand the call to action (CTA).
• Use analytics to determine the optimal send times. Make sure to avoid sending messages too often or during late/early hours.
• Use A/B testing to help optimize your SMS marketing strategy by experimenting with different CTAs, send times, and message formats.

What regulations do I need to follow for SMS marketing?

Read up on regulations and legal requirements before implementing any marketing strategy. Like email marketing, SMS marketing regulations dictate how and when you can communicate with your audience via text messages. Compliance with regulations ensures legal peace of mind as well as happier recipients. For a fuller walkthrough, see our guide to SMS compliance requirements.

At a glance:

Regulation	Applies to	What it requires
TCPA	US promotional texts	Written consent before sending; a clear opt-out in every message; no sends before 8 a.m. or after 9 p.m. local time
CAN-SPAM	US commercial messages	An opt-out option, no false or misleading content, clear identification as an advertisement
GDPR	EU personal data	Individual consent before processing, data minimization, and security measures that protect privacy
SHAFT	US carrier content rules	No sex, hate, alcohol, firearms, or tobacco content — carrier-enforced and separate from federal law

These are the baseline. Carrier rules and regional law both change, so review your opt-in SMS policy before launching in a new market.

Understanding legal requirements

Failure to comply with relevant legal requirements can lead to severe consequences. Here's a brief overview of relevant regulations to help you avoid legal penalties and damage to your brand's reputation:

• TCPA (Telephone Consumer Protection Act): US federal law regulating telemarketing calls, including text messages and voice calls to mobile phones. Marketers are required to obtain written consent before sending any promotional text messages. According to the TCPA, every text message must include a clear opt-out mechanism. Marketing messages cannot be sent before 8 a.m. or after 9 p.m. in the local time zone.
• CAN-SPAM Act (Controlling the Assault of Non-Solicited Pornography And Marketing Act): US law primarily regulating email marketing with some implications for SMS marketing. Similar to TCPA, the CAN-SPAM Act requires all commercial messages to include an opt-out option. Messages must not include false or misleading information and must be clearly indicated as an advertisement.
• GDPR (General Data Protection Regulation): European Union regulation governing personal data protection. It applies primarily to online marketing and email but has certain implications for SMS marketing too. Individual consent needs to be obtained before processing for marketing purposes and only data which is necessary for the specific marketing purpose can be collected. The GDPR also requires robust security measures to be put in place to protect privacy.

Obtaining consent

As regulated by various laws mentioned above, consent is a primary concern for SMS marketing. Text message marketing requires prior consent which can be given in a simple opt-in system. Customers give explicit consent to receive marketing communications by clicking a checkbox or filling out a sign-up form. By taking an affirmative action to subscribe, recipients actively express interest in receiving messages.

Another option is a double opt-in process, adding an extra layer of confirmation that the recipient wants to receive messages. How does it work?

• Step one: An individual expresses initial interest by signing up or subscribing.
• Step two: After the initial opt-in, contact information is recorded but not immediately added to the SMS list. Rather, a confirmation request is sent.
• Step three: The recipient must confirm their intention to receive messages.
• Step four: After confirming consent, they are added to the marketing list as a fully opted-in subscriber.

Providing clear opt-out options

If SMS subscribers no longer wish to receive text messages, they have the right to opt out of future messages. It's important to include an easy way for subscribers to stop receiving messages.

In SMS marketing, it's more important to maintain a list of active subscribers as this will contribute to better marketing metrics. Providing an accessible and easy way for recipients to unsubscribe is both a legal requirement and a best practice for fostering trust and a positive brand image.

For a benchmark, Mailchimp SMS Marketing has an average unsubscribe rate of 1.3%3. If yours runs consistently above that, treat it as a signal about frequency or relevance rather than a cost of doing business — there are practical ways to reduce SMS opt-outs.

How do I build a quality SMS subscriber list?

As you build your target audience it's important to regularly monitor and clean your SMS mailing list. Your ultimate goal is to reach and engage customers who are likely to convert. The following best practices will help you achieve a high-quality subscriber list.

Data collection strategies

To get started with SMS marketing efforts you'll need to build a subscriber list. There are several ways to collect opt-ins, both online and in person. Here are some of the most effective methods to use:

• Website pop-ups: Add sign-up prompts on high-traffic pages to capture visitors while they're already engaged with your brand.
• Checkout opt-ins: Give customers the option to subscribe during the purchase process when they're most likely to say yes.
• Loyalty programs: Offer rewards or points in exchange for signing up for text message marketing.
• Mobile app prompts: Ask users for permission to send SMS when they create a profile or adjust their communication settings in your app.
• In-store signups: Collect phone numbers at the register, during events, or through printed signage with a short code.
• Incentives (discounts, early access): Offer a discount or exclusive access to encourage people to opt in.

Building your list is only half of the process — you also need to keep it clean. Regularly:

• Remove inactive numbers: Drop contacts who haven't engaged in a set period to keep your list performing well.
• Monitor opt-outs: Track unsubscribe trends so you can adjust your frequency or content if needed.
• Clean bounced contacts: Remove numbers that consistently fail to deliver so they don't drag down your metrics.

Segmentation for targeted messaging

Segmentation is a crucial strategy in SMS marketing to reach customers and make meaningful connections. By dividing your text campaigns to target smaller, targeted groups, you can tailor your messages to specific preferences. It measurably works: segmented SMS campaigns delivered 6% higher click rates during peak season 2025.6 Here are a few strategies to help you segment your SMS mailing list:

• Demographics: Gender, age, location, income level, etc.
• Purchase history: Transaction date, quantity, price, total purchase amount, payment method, etc.
• Behavior and preferences: Website visits, app usage, product interests, communication preferences, etc.

How do I engage my customers with SMS content?

Out of all marketing tools, text messaging is one of the most effective for connecting with customers. It requires a thoughtful approach focused on crafting concise, relevant, and personalized messages. Concise messages are short and to the point. Since SMS has character limits, every word counts. Keeping messages simple ensures the main point and CTA are clearly communicated.

SMS automation makes reaching a wide audience easier than ever. Despite automation, you can still personalize messaging by using the recipient's name and customer data to create tailored offers. After segmenting your audience, send specific promotions, discounts, or content that aligns with the recipient's interests or past purchase history.

Use effective CTA examples like “Shop Now” or “Learn More” to encourage recipients to interact with your content. Along with prominent CTAs, it's imperative to send text messages at the right time. Avoid overloading customers with too many texts in a short period of time.

What “relevant” means depends on what you sell:

• If you run an ecommerce store: Anchor SMS to purchase behavior — cart recovery, back-in-stock alerts, and shipping updates. These have a built-in reason to text and a clear conversion path. During peak season 2025, SMS order rates ran 0.03%-0.25% against email's 0.01%-0.04%,6 so transactional moments are where the channel earns its cost.
• If you run a local or appointment-based business: Lead with logistics rather than promotions. Confirmations, reminders, and schedule changes are the messages customers actually want, and they build the opt-in goodwill that makes an occasional offer welcome.
• If you sell B2B or on a long sales cycle: Keep SMS narrow. Use it for time-bound events — a webinar starting, a renewal window closing, a document needing a signature — and leave education to email, where there's room for it.

When crafting your messages, avoid:

• Overloading with links: Too many links make a message feel cluttered and can trigger spam filters.
• Long paragraphs: Walls of text don't work on a phone screen. Keep it brief and scannable.
• Multiple CTAs: Stick to one clear action per message so recipients know exactly what to do.

Why is mobile optimization critical for SMS?

Mobile optimization for your campaigns is vital since your marketing messages are being sent via SMS message.

This means your recipients are accessing your content and links on a mobile device. Use a responsive design that displays properly on various mobile screens. This ensures text is not cut off and images are displayed properly. Unresponsive content distorts your message and can immediately turn off your customers.

Use SMS short codes and shortened SMS URLs to make it even easier for customers to interact with your brand via text. This saves space and time while making your messages cleaner and more visually appealing. Practice compatibility testing to confirm your message formatting and readability.

How often should I send SMS messages?

Finding the right frequency is about staying top of mind without wearing out your welcome. Here's some general guidance:

• 4–6 messages per month: This is a solid range for most businesses. It's enough to stay relevant without overwhelming subscribers.
• No more than 50% promotional: Balance sales-focused messages with updates, tips, or content that adds value beyond a discount.
• Increase during seasonal campaigns: It's fine to ramp up during holidays or big sales events when customers expect more activity.
• Decrease if unsubscribe rates rise: If people are opting out, pull back on frequency before you lose more of your list.

Keep an eye on your metrics to know when something needs adjusting. Watch for:

• Rising opt-outs: A spike in unsubscribes usually means you're sending too often or the content isn't landing.
• Decreasing CTR: If fewer people are clicking, your messages may be losing relevance or urgency.
• Negative replies: Direct feedback from subscribers is a clear signal to reassess your approach.

What does SMS marketing cost?

SMS marketing is priced per message sent, not per subscriber, which makes it behave differently from email. Three variables drive what you actually spend:

• Volume: Every message to every recipient costs. A 5,000-person list messaged four times a month is 20,000 sends, not 5,000.
• Message type: MMS — anything with an image or video — costs more per send than plain SMS.
• Destination: Rates vary by country. Mailchimp SMS Marketing is currently available in 37 countries and territories globally, including 34 in Europe, and pricing differs across them.

Because cost scales with sends rather than list size, the discipline that keeps SMS affordable is the same one that keeps it effective: message fewer people more relevantly. A segmented send to 2,000 engaged subscribers usually costs less and returns more than a blast to 10,000 indifferent ones. That makes SMS list building a cost decision as much as a growth one — who you add determines what every future send costs.

How do I measure SMS marketing ROI?

SMS ROI is revenue attributed to your text campaigns divided by what you spent sending them. The arithmetic is simple; the attribution is where most programs go wrong.

Track these four, in this order:

• Attributed revenue: Orders traceable to an SMS click within your attribution window. This is the numerator, and it's the number worth arguing about.
• Send cost: Total message spend for the campaign — the denominator.
• Click rate: The leading indicator. It moves before revenue does, so it tells you something is wrong while you can still fix it.
• Unsubscribe rate: The cost that doesn't appear on an invoice. Every opt-out permanently removes a reachable customer.

The returns can be substantial when attribution is set up properly: Mailchimp SMS e-commerce users saw up to a 22x ROI after launching their first SMS Marketing campaign4. If you want to work through the calculation against your own numbers, we have a full walkthrough of how to calculate the ROI of SMS marketing.

When is SMS the wrong channel?

SMS is the most immediate channel available, which is exactly why it's the wrong one for some jobs. It's worth being honest about where it underperforms:

• Long or detailed content. Character limits mean anything requiring explanation, comparison, or images belongs in email. Forcing it into SMS produces a link with no context, and the click rate shows it.
• Audiences you haven't earned permission from. Email tolerates a degree of cold outreach. SMS does not, legally or socially. Without genuine opt-in, texting costs you the relationship and exposes you to real penalties.
• Routine, non-urgent updates. A text implies something needs attention now. Spending that implication on a newsletter trains people to ignore the next message — or to opt out.
• Markets where you can't send. Availability and carrier rules vary by country, so a global campaign may reach only part of your list.

It's also worth saying plainly that SMS costs more per message than email and carries a harder ceiling on how often you can use it. The channels aren't substitutes. SMS works best carrying the small number of messages that genuinely can't wait, with email doing the rest.

What common SMS mistakes should I avoid?

Like any marketing method, SMS works best when you're thoughtful about how you use it. Misleading content, poor timing, and overuse can all damage your reputation and push subscribers away.

Listening to customer feedback — whether it's through direct replies, opt-outs, or SMS surveys — gives you the insight you need to course-correct. Here are the most common mistakes to avoid:

• Sending too frequently: Too many messages in a short span will frustrate subscribers and drive up opt-outs.
• Messaging without value: Every text should offer something useful, whether it's a deal, an update, or relevant content.
• Ignoring opt-outs: When someone unsubscribes, honor it immediately. Failing to do so is both a legal risk and a trust destroyer.
• Misleading claims: Always provide honest, accurate information. Exaggerated offers or bait-and-switch tactics erode credibility fast.
• Poor timing: Sending messages too early, too late, or at random times reduces engagement and annoys your audience.
• Generic blasts: One-size-fits-all messages feel impersonal. Use segmentation and personalization to make every text feel relevant.

Understand the ongoing evolution of SMS marketing

SMS marketing is a beneficial tool to add to your marketing efforts. It can help you reach audiences you haven't yet tapped into and can set you apart from competitors. Text message marketing is particularly effective for small and growing businesses thanks to the low costs and ease of use.

It works best alongside what you already send rather than instead of it. Mailchimp users saw up to a 2x higher click rate when they used both Email and SMS5 — and among Mailchimp SMS users we surveyed, a majority wish they had implemented SMS marketing sooner7.

The use of an SMS marketing platform can elevate your marketing efforts. Get tips and guidance on effective SMS campaigns based on your industry, target audience, and goals. SMS marketing software does the heavy lifting so you can focus on tailoring your messages, engaging with customers, and improving metrics.