SMS MarketingMarketing Guide
Reach customers instantly with 98% open rates and 45% response rates — SMS is the most direct, highest-engagement marketing channel available today.
Written bySarah Chen · Head of Content, Performance Marketing22 min
$50 – $200/month
Beginner
Introduction
SMS marketing boasts open rates that make email marketers jealous — 98% of text messages are read within 3 minutes of delivery. In 2026, SMS has evolved from a simple promotional channel into a sophisticated marketing tool with automation, personalization, and two-way conversational capabilities.
While email sits in crowded inboxes and social media fights algorithms, SMS cuts through the noise with unmatched immediacy. The average person checks their phone 96 times per day, and text messages are the first thing they see. This direct access makes SMS the perfect complement to your email and social strategy.
This guide covers everything from building your SMS subscriber list legally to crafting messages that convert, setting up automation flows, and measuring ROI. You'll learn how to use SMS as a high-impact channel without annoying your customers or running afoul of regulations.
Why This Marketing Channel Works
The numbers speak for themselves: 98% open rate, 45% response rate, and 90% of messages read within 3 minutes. No other marketing channel comes close to these engagement metrics. SMS reaches customers exactly where they are — on their most personal device.
SMS creates urgency naturally. A text message feels immediate and time-sensitive in a way that emails and social posts don't. This makes SMS ideal for flash sales, limited-time offers, appointment reminders, and time-sensitive updates that drive immediate action.
The channel is remarkably inclusive. While social media and email require internet access and specific apps, SMS works on every phone — smartphone or basic. This universal reach makes SMS effective across all demographics and markets.
SMS and email together create a powerful one-two punch. Brands using both channels see 30-40% higher customer lifetime value compared to those using email alone. SMS handles urgency and brief updates while email delivers depth and storytelling.
Step-by-Step Strategy
Choose an SMS Marketing Platform
Select a platform designed for marketing SMS (not just transactional messaging). Top options include Klaviyo (best for ecommerce with email+SMS), Attentive (SMS-first platform), Postscript (Shopify-focused), and Brevo (budget-friendly). Key features to evaluate: automation flows, segmentation, two-way messaging, MMS support (images/GIFs), compliance tools (opt-in/opt-out management), and analytics. Ensure the platform handles TCPA compliance automatically, including opt-in confirmation and easy opt-out processing.
- Choose a platform that handles TCPA/GDPR compliance automatically
- If you use Klaviyo for email, add their SMS for unified customer profiles
- Ensure the platform supports MMS (multimedia messages) for richer campaigns
- Check per-message pricing at your expected volume — costs add up quickly
Build Your SMS Subscriber List (Legally)
SMS marketing requires explicit opt-in consent — this is legally mandated by TCPA in the US and similar regulations globally. Never add customers to your SMS list without their explicit permission. Build your list through: website pop-ups with SMS opt-in, checkout page opt-in checkboxes, keyword-based opt-in (text JOIN to 55555), social media promotions, and email cross-promotion. Offer a clear incentive — 15-20% discount, free shipping, or early access. Always include required disclosures: message frequency, data rates, and opt-out instructions.
- Offer a compelling incentive: '15% off your first order — text JOIN to 55555'
- Add SMS opt-in as a checkbox on your checkout page
- Cross-promote SMS signup in your email welcome sequence
- Always include TCPA-required disclosures in your opt-in forms
Set Up Compliance and Opt-Out Management
SMS compliance is non-negotiable. Violations can result in fines of $500-$1,500 per message. Ensure your program includes: double opt-in confirmation, clear identification in every message (brand name), easy opt-out processing (STOP to unsubscribe), quiet hours compliance (no messages before 8 AM or after 9 PM local time), and message frequency caps. Keep records of all opt-in consent. Work with your platform's compliance team to review your setup before launching your first campaign.
- Send a confirmation text immediately after opt-in with brand name and opt-out instructions
- Honor STOP requests instantly — no confirmation messages after opt-out
- Set quiet hours: no messages before 8 AM or after 9 PM in the recipient's timezone
- Cap frequency at 4-8 messages per month to avoid fatigue and complaints
Craft Messages That Convert
SMS copywriting is an art of extreme brevity. You have 160 characters for SMS (or 300 for MMS) to grab attention, communicate value, and drive action. Lead with the offer or key information. Include your brand name. Create urgency with time-limited offers or scarcity. Always include a clear CTA with a shortened, trackable link. Use personalization (first name, last purchase) to increase relevance. MMS messages with images get 15-20% higher click-through rates than text-only SMS. Write in a conversational, friendly tone — texts are personal.
- Lead with the value: '🔥 Flash Sale: 40% off everything — ends midnight'
- Always include your brand name so recipients know who's texting
- Use shortened, trackable links (bit.ly or your platform's built-in shortener)
- Add emojis strategically — they increase engagement by 10-15%
Build Automated SMS Flows
Automated SMS flows generate the majority of SMS revenue for top-performing brands. Essential flows include: Welcome series (immediate discount + brand introduction), Abandoned cart recovery (1-2 messages within 1-4 hours), Shipping and delivery notifications (high open rates build trust), Post-purchase follow-up (review requests, cross-sells), Win-back campaigns (re-engage lapsed customers at 60-90 days), and Back-in-stock alerts. Time automations carefully — SMS is interruptive, so spacing is crucial. Combine with email automations for a coordinated experience.
- Send abandoned cart SMS within 1 hour — before the email reminder
- Use shipping notifications to build trust and reduce support tickets
- Space automated messages at least 24 hours apart
- Coordinate SMS and email automations so customers don't get both simultaneously
Segment and Personalize
Don't send every message to every subscriber. Segment by purchase history (VIP customers vs. one-time buyers), engagement level (active vs. dormant), product interests, location, and customer lifecycle stage. Use dynamic fields to personalize messages with first names, recent purchases, or relevant product recommendations. Segmented SMS campaigns see 30% higher conversion rates than broadcast messages. Create a VIP segment for your top 20% of customers and give them early access to sales and exclusive offers.
- Create a VIP segment for top customers with exclusive early access
- Segment by purchase category to send relevant product promotions
- Use location-based segmentation for local events or store promotions
- Personalize with first name and last purchased product for relevance
Measure Performance and Optimize
Track key SMS metrics: delivery rate (target 97%+), open rate (implied by delivery for SMS), click-through rate (target 10-15%), conversion rate, revenue per message, opt-out rate (keep under 2% per campaign), and cost per acquisition. Calculate ROI by comparing total SMS revenue against platform costs and message fees. A/B test message copy, send times, offer types, and CTA placement. Review performance weekly and adjust your strategy based on what drives the highest revenue per message.
- Track revenue per message as your primary performance metric
- A/B test send times — even 1-2 hour shifts can impact conversion rates
- Monitor opt-out rates by campaign type to identify fatigue triggers
- Compare SMS ROI against other channels to justify budget allocation
Want a printable version of these steps?
Download a checklist you can work through offline.
Tools & Platforms
Unified email and SMS platform for ecommerce with advanced segmentation, automation flows, and deep Shopify/BigCommerce integration.
SMS-first marketing platform with AI-powered messaging, advanced segmentation, two-way conversations, and robust compliance tools.
SMS marketing platform built specifically for Shopify stores with one-click integration, automation flows, and revenue attribution.
Affordable all-in-one platform offering SMS marketing alongside email, with automation, API access, and competitive per-message pricing.
Budget Recommendations
Platform subscription plus 1,000-5,000 messages per month. Manual campaigns with basic automations. Suitable for small businesses testing SMS as a channel.
5,000-25,000 messages per month with full automation flows, segmentation, and MMS campaigns. A/B testing program and integration with email platform.
25,000+ messages per month, premium SMS platform, dedicated short code, advanced personalization, and full omnichannel automation coordination.
Common Mistakes
Sending too many messages
SMS fatigue is real and severe. Over-messaging leads to high opt-out rates and brand damage. Cap at 4-8 messages per month and make every message count with genuine value or offers.
Ignoring TCPA compliance
TCPA violations carry penalties of $500-$1,500 per unsolicited message. A single campaign to a non-consented list of 10,000 could result in millions in fines. Compliance isn't optional.
Treating SMS like email
SMS requires different copywriting — shorter, more direct, more urgent. Long-form content belongs in email. SMS should deliver a single message with a clear CTA in under 160 characters.
Not coordinating with email
Sending the same promotion via SMS and email at the same time frustrates customers. Coordinate timing: use SMS for urgency (flash sales, last chance) and email for detail (product launches, newsletters).
Sending at wrong times
A promotional text at 6 AM or 10 PM annoys customers and may violate quiet hours regulations. Send during business hours (10 AM - 8 PM local time) and test optimal send times for your audience.
Real World Examples
Brooklinen
Implemented SMS marketing with a welcome flow, abandoned cart recovery, and VIP early access campaigns using Attentive.
Result: SMS generates 20%+ of total ecommerce revenue with a 25x ROI, making it their highest-performing owned channel alongside email.
OLIPOP
Used Postscript to build an SMS program focused on new product launches, restock alerts, and exclusive subscriber-only offers.
Result: Achieved $50+ revenue per SMS subscriber annually and a 30% click-through rate on product launch announcements.
Domino's Pizza
Pioneered text-to-order SMS marketing allowing customers to reorder their favorite pizza by texting a pizza emoji.
Result: SMS ordering became a significant revenue channel, demonstrating the power of two-way conversational SMS commerce.
Frequently Asked Questions
Conclusion
SMS marketing delivers unmatched engagement metrics — 98% open rates, 45% response rates, and messages read within 3 minutes. When used strategically and compliantly, it's one of the most powerful tools in your marketing arsenal.
Start by building your list legally with clear opt-in and compelling incentives. Set up essential automations (welcome, abandoned cart, shipping notifications) before launching campaign sends. Respect your subscribers' inbox with relevant, valuable messages at a sustainable frequency.
The brands winning with SMS treat it as a premium, high-trust channel. Every message should feel like it was worth the interruption. Follow this guide, prioritize compliance and relevance, and SMS will become a reliable revenue driver for your business.
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