Our Top 5 Picks
Klaviyo is the dominant platform for ecommerce marketing — and its SMS offering is tightly integrated with email in a single subscriber profile. This means you can build unified segments, trigger SMS or email flows based on the same purchase behaviors, and see combined revenue attribution across both channels. For Shopify brands already using Klaviyo for email, adding SMS is a no-brainer.
The automation builder supports SMS + email in the same flow — so you can send an abandoned cart email, then follow up with an SMS 30 minutes later if no click. Pre-built flows cover abandoned cart, post-purchase, win-back, and browse abandonment out of the box.
Pricing: Free up to 150 SMS credits/mo, then pay-per-message (~$0.01–0.015/SMS). SMS is billed separately from the email plan.
Best for: Shopify brands who want email + SMS in one platform with best-in-class segmentation and automation.
Attentive is widely considered the gold standard for enterprise SMS marketing. It was built SMS-first and it shows — deliverability is best-in-class, compliance tooling (TCPA/CTIA) is the most comprehensive in the market, and the two-way conversation features are more sophisticated than any competitor. Major DTC brands like Pura Vida, Coach, and Crate & Barrel use Attentive.
The subscriber growth tools — two-tap mobile opt-in, pop-up builder, and identity resolution — are genuinely differentiated. Attentive's creative concierge service (where their team helps you write and optimize SMS copy) is a premium feature smaller platforms don't offer.
Pricing: Custom pricing — typically $400–$1,000+/mo depending on subscribers and send volume. No self-serve pricing page.
Best for: Mid-market to enterprise ecommerce brands that want the best SMS deliverability, compliance, and two-way messaging.
Postscript is Shopify-exclusive and SMS-first — meaning every feature is built for Shopify stores using SMS as a primary marketing channel. The Shopify integration is the deepest of any SMS tool: subscriber segmentation pulls from Shopify customer data natively, and revenue attribution is automatic and accurate.
Postscript's keyword automation (e.g., text "SALE" to subscribe) and conversational SMS flows are standout features. The platform is also known for strong deliverability and a compliance-forward approach, including built-in quiet hours and TCPA-compliant opt-in flows.
Pricing: Starts at $100/mo (includes a monthly SMS credit allowance). Usage-based pricing above the base plan. Shopify only — does not support other platforms.
Best for: Shopify brands that want SMS as their primary marketing channel and a Shopify-native tool built specifically for that use case.
Omnisend is the best budget-friendly option for brands that want both email and SMS without the complexity or cost of Klaviyo. SMS credits are included in paid plans — unlike Klaviyo, where SMS is billed separately on top of your email plan. For brands under 10,000 contacts, Omnisend typically costs 30–40% less than Klaviyo for comparable functionality.
The automation builder supports multi-channel flows (email + SMS + push notifications), the Shopify integration is solid, and the reporting is clear and actionable. It's not as powerful as Klaviyo at the high end, but for most brands it covers 90% of what matters at a fraction of the cost.
Pricing: Free up to 250 contacts · Standard $16/mo (SMS credits included) · Pro $59/mo · scales similarly to Klaviyo but at a lower price point.
Best for: Budget-conscious ecommerce brands wanting email + SMS together without paying Klaviyo pricing.
Yotpo SMS stands apart because it's part of the broader Yotpo platform — which also includes loyalty programs, reviews, visual UGC, and referrals. If you're already using Yotpo for reviews or loyalty, adding their SMS tool creates a genuinely unified marketing stack where loyalty points triggers, review request flows, and post-purchase SMS all live in one place.
The SMS tool itself is solid — good automation flows, strong Shopify integration, and TCPA-compliant opt-in tools. The differentiated value is the cross-product data: you can segment SMS subscribers based on loyalty tier, points balance, or review history, which isn't possible with standalone SMS tools.
Pricing: Custom pricing — typically bundled with other Yotpo products. Pricing depends on SMS volume and which Yotpo products you use. Contact sales for a quote.
Best for: Brands that want SMS + loyalty + reviews from one vendor, especially if already using Yotpo.
Platform Comparison
| Platform | Score | Pricing | Shopify Native? | SMS Only or Email+SMS | Best For |
|---|---|---|---|---|---|
| Klaviyo | 9.0/10 | Free (150 SMS/mo) + pay-per-msg | ✓ Deep | Email + SMS | Shopify brands wanting email+SMS unified |
| Attentive | 8.8/10 | Custom ($400–$1,000+/mo) | ⚡ Yes | SMS primary + email | Mid-market to enterprise brands |
| Postscript | 8.6/10 | From $100/mo | ✓ Shopify only | SMS only | Shopify-native SMS-first brands |
| Omnisend | 8.5/10 | Free · Standard $16/mo | ⚡ Yes | Email + SMS | Budget-conscious email+SMS brands |
| Yotpo SMS | 8.2/10 | Custom pricing | ⚡ Yes | SMS + loyalty + reviews | Brands wanting SMS + loyalty + reviews |
What to Look For in Ecommerce SMS Marketing
Not all SMS platforms are equal — especially for ecommerce. Here's what separates the best from the rest:
Compliance (TCPA/CTIA)
SMS has strict legal requirements. Look for built-in TCPA-compliant opt-in flows, mandatory quiet hours, and clear opt-out handling. Non-compliance can mean significant legal exposure.
Deliverability
Not all SMS messages reach their destination. Top platforms maintain carrier relationships and dedicated short codes or toll-free numbers to maximize delivery rates. Attentive and Postscript lead here.
Shopify Integration Depth
How deeply does the platform sync with Shopify? Look for real-time order data, product catalog access, and native abandoned cart triggers — not just basic order sync.
Automation Flows
Pre-built flows for abandoned cart, post-purchase, win-back, and browse abandonment drive the majority of SMS revenue. The best platforms have these ready to activate in minutes.
Pricing Model
Per-message pricing (like Klaviyo SMS) gets expensive at scale. Flat-rate plans with included credits (like Omnisend, Postscript) can be more predictable once you're sending volume.
Segmentation
Can you target SMS subscribers by purchase behavior, LTV, product category, or loyalty tier? Deep segmentation is what separates high-ROI SMS programs from average ones.
SMS Marketing Best Practices for Ecommerce
Opt-In Strategies That Work
SMS subscribers must explicitly opt in — and the quality of your opt-in process directly impacts engagement. The best-performing strategies include:
- Two-tap mobile opt-in: Attentive popularized this — a mobile-optimized pop-up that captures both email and phone in two taps. Conversion rates are significantly higher than desktop forms.
- Checkout opt-in: Add an SMS opt-in checkbox at Shopify checkout. These subscribers are the highest-intent — they're literally in the middle of buying.
- Keyword campaigns: "Text SAVE20 to [number]" — run these on social, in packaging, or at events. Postscript excels at keyword-based subscription flows.
- Post-purchase SMS: After a purchase confirmation, invite email subscribers to opt into SMS for exclusive updates and early access.
Timing and Frequency
SMS is an interruptive channel — subscribers are handing you a direct line to their most personal device. Respect that access:
- Send during business hours: 10am–8pm in the subscriber's local time zone. All reputable platforms enforce quiet hours; make sure yours are configured.
- Frequency: 4–8 SMS/month for most brands is the sweet spot. Higher frequency works for flash sale brands; lower for premium/luxury. Watch opt-out rates closely — a spike signals you're sending too often.
- Respect the timing of automated flows: Abandoned cart SMS should go out 30–60 minutes after abandonment, not immediately. Post-purchase follow-ups typically perform best 2–3 days after delivery.
Personalization
Generic broadcast SMS is a wasted channel. The brands getting 20–30x ROI from SMS are the ones treating it like a personalized conversation:
- Use first name in messages — open rates and click rates both improve with personalization tokens.
- Reference recent purchases ("How are you enjoying your [product]?") for post-purchase flows.
- Segment by purchase category — don't send footwear promotions to someone who only buys accessories.
- Loyalty-tier messages ("As a Gold member, here's your early access link") drive significantly higher conversion than generic promos.
- A/B test message copy, CTA language, and send times — the best SMS platforms make this easy.
Frequently Asked Questions
Yes — SMS consistently delivers the highest open rates of any marketing channel, typically 90–98% within the first 3 minutes. For ecommerce, SMS is especially powerful for abandoned cart recovery, flash sales, and post-purchase flows. Most brands see 10–30x ROI on SMS when it's set up with proper automation and segmentation. The key is building a quality subscriber list and using the channel sparingly enough that messages stay welcome.
A good SMS open rate is 90%+ — compared to 20–25% for email. Click-through rates for SMS typically run 15–25%, vs 2–5% for email. Conversion rates from SMS are also higher because subscribers are highly opted-in and messages arrive immediately. This is why ecommerce brands increasingly treat SMS as their highest-ROI channel, even if the subscriber list is smaller than email.
Klaviyo SMS is best if you want email and SMS in one platform — the unified subscriber profiles, shared segments, and combined flows make it extremely powerful for coordinated marketing. Postscript is Shopify-exclusive and SMS-only, which means a more focused toolset with deeper Shopify SMS features and slightly better pure-SMS deliverability. Postscript edges out Klaviyo for brands where SMS is the primary channel; Klaviyo wins when email + SMS together in one place is the priority.
Costs vary significantly by model and volume. Klaviyo charges per message (~$0.01–0.015/SMS) on top of your email plan. Postscript starts at $100/mo with included credits. Omnisend includes SMS credits in paid plans starting at $16/mo. Attentive and Yotpo SMS are custom-priced, typically $400–$1,000+/mo for mid-market brands. Per-message pricing gets expensive at scale — flat-rate plans often make more sense once you're sending consistent volume every month.
For mid-market to enterprise ecommerce brands — yes. Attentive is widely regarded as having the best SMS deliverability, the most comprehensive TCPA/CTIA compliance tooling, and the most sophisticated two-way conversation features. If you're generating $5M+ in revenue and SMS is a core channel, Attentive's premium pricing typically pays for itself through higher deliverability and conversion. For smaller brands, Klaviyo, Postscript, or Omnisend will deliver better ROI at a lower cost.
🔗 Related reading: Klaviyo Review · Omnisend Review · Best Email Marketing for Shopify