E-commerce brands are experiencing a dramatic shift in marketing channel performance, with SMS campaigns delivering an average return on investment of 45:1 compared to email marketing’s 36:1 ratio, according to new data from Klaviyo’s 2026 Marketing Performance Report released this week.
The surge in SMS effectiveness comes as email open rates continue their downward trajectory, falling to an average of 18.7% across e-commerce verticals in Q1 2026, down from 21.3% in the same period last year. Meanwhile, SMS open rates have climbed to 94.2%, with click-through rates averaging 8.4% versus email’s 2.8%.
“We’re seeing a fundamental realignment in how consumers engage with branded communications,” said Sarah Chen, Director of Marketing Analytics at Klaviyo. “The data clearly shows that SMS has moved from a nice-to-have channel to the primary driver of direct-to-consumer revenue for our top-performing merchants.”
Why Are E-commerce Brands Seeing Higher SMS Conversion Rates?
The shift toward SMS marketing effectiveness stems from several converging factors reshaping consumer behavior and marketing channel saturation. Industry analysts point to email inbox overcrowding as the primary catalyst, with the average consumer receiving 147 promotional emails weekly compared to just 12 SMS messages.
Postscript, a leading SMS marketing platform for e-commerce, reported that their merchant base generated $2.8 billion in attributed revenue through SMS campaigns in Q1 2026, representing a 67% increase year-over-year. The platform’s data reveals that abandoned cart recovery via SMS converts at 31% compared to email’s 18% rate.
“SMS feels more personal and urgent to consumers,” explained Marcus Rodriguez, VP of Growth at Postscript. “When someone receives a text from a brand they’ve opted into, they’re 4.7 times more likely to take immediate action compared to seeing that same message in their email inbox.”
The average e-commerce brand now allocates 34% of their retention marketing budget to SMS, up from just 12% in 2024, according to Retention Marketing Institute data.
How Should Shopify and BigCommerce Merchants Restructure Their Marketing Mix?
Leading e-commerce platforms are responding to this shift with enhanced SMS integration capabilities. Shopify announced last month that SMS marketing apps in their ecosystem processed over $8.2 billion in attributed sales during Q4 2025, prompting the platform to prioritize SMS functionality in their native marketing tools.
DTC furniture retailer Burrow exemplifies this strategic pivot. The company shifted 40% of their retention marketing budget from email to SMS in early 2026, resulting in a 28% increase in customer lifetime value and a 34% improvement in repeat purchase rates within 90 days.
“Our SMS subscribers have an average LTV of $847 compared to $623 for email-only customers,” revealed Jessica Park, Director of Customer Growth at Burrow. “The immediacy of SMS drives faster purchase decisions, especially for our limited-time product drops and inventory restocks.”
What SMS Marketing Strategies Are Driving the Highest ROI?
The most successful e-commerce SMS campaigns focus on three core strategies: personalized product recommendations, time-sensitive offers, and post-purchase engagement sequences. Data from Attentive, another major SMS platform, shows that segmented SMS campaigns based on purchase history generate 73% higher revenue per message compared to broadcast sends.
Beauty brand Glossier reported that their SMS VIP program, launched in September 2025, now accounts for 42% of their total direct-to-consumer revenue despite representing only 23% of their customer database. The program combines exclusive product previews, personalized shade recommendations, and SMS-only promotional codes.
- Abandoned Cart Recovery: SMS messages sent within 30 minutes of cart abandonment show 31% conversion rates
- Back-in-Stock Notifications: SMS alerts convert at 47% compared to email’s 22%
- Post-Purchase Cross-sell: SMS follow-up campaigns generate 23% additional revenue per customer
- VIP Program Updates: Exclusive SMS offers create 34% higher customer retention rates
Are There Compliance Risks E-commerce Brands Should Consider?
The rapid growth of SMS marketing has attracted increased regulatory scrutiny, particularly around consent and frequency capping. The Federal Communications Commission issued updated guidelines in March 2026 requiring explicit double opt-in for all commercial SMS communications and mandating clearer unsubscribe processes.
“Compliance is becoming more complex as SMS volumes increase across the industry,” warned David Kim, Legal Counsel at TextMagic. “Brands need robust consent management systems and careful frequency monitoring to avoid penalties that can reach $43,792 per violation under TCPA regulations.”
Industry best practices now recommend capping promotional SMS to 4-6 messages per month for most e-commerce verticals, with beauty and fashion brands able to sustain slightly higher frequencies due to product discovery behaviors.
How Will This Shift Impact Email Marketing Strategies Going Forward?
Rather than abandoning email entirely, successful e-commerce brands are repositioning email for longer-form content, educational materials, and nurture sequences while reserving SMS for immediate action-oriented communications.
“Email isn’t dead, but its role is evolving,” noted Amanda Foster, Senior Marketing Strategist at Mailchimp. “We’re seeing brands use email for brand storytelling and product education, then drive conversions through SMS touch points. It’s becoming a more sophisticated omnichannel approach.”
The integration between email and SMS platforms has become a key competitive differentiator, with unified customer profiles allowing brands to optimize message timing and channel selection based on individual engagement patterns. Klaviyo reported that merchants using coordinated email-SMS campaigns see 23% higher overall marketing ROI compared to single-channel approaches.
What Action Steps Should Online Store Owners Take Now?
E-commerce professionals looking to capitalize on SMS marketing’s momentum should begin with audit of their current channel performance and gradual budget reallocation rather than dramatic overnight shifts.
“Start by identifying your highest-value customer segments and test SMS campaigns with those audiences first,” advised Chen from Klaviyo. “The goal isn’t to replace email immediately, but to find the optimal channel mix for each customer journey stage.”
Key implementation priorities include selecting SMS platforms with robust e-commerce integrations, establishing clear consent collection processes at checkout and through email signup forms, and developing message cadences that complement rather than compete with existing email campaigns.
As the e-commerce marketing landscape continues evolving, the brands that successfully balance immediacy with customer experience will likely capture the greatest share of the growing SMS marketing opportunity. With consumer attention becoming increasingly fragmented across digital channels, the direct nature of SMS communications appears positioned to play an expanding role in driving online store growth throughout 2026 and beyond.
