Last updated: August 2026 | Reading time: 10 minutes
SMS marketing has the highest open rate of any marketing channel — consistently above 90%, compared to email’s average of 20–40%. The average SMS is read within three minutes of delivery. For time-sensitive campaigns — flash sales, back-in-stock alerts, abandoned cart nudges — no other channel comes close on immediacy.
The challenge in 2026 is that “SMS marketing software” covers a wide spectrum. At one end, dedicated SMS-first platforms built entirely around text messaging. At the other, email marketing platforms that have added SMS as a channel alongside their core product. The right choice depends entirely on whether SMS is your primary channel or one part of a broader multichannel marketing stack.
This guide covers seven SMS marketing platforms that genuinely stand out in 2026 — what each does well, where it falls short, and which type of business it is actually built for. If you are evaluating these platforms as part of a broader ecommerce marketing stack, our guide to the best ecommerce marketing tools in 2026 covers the full picture, and our ecommerce email marketing guide explains how SMS and email work best together.
TL;DR: Best SMS Marketing Software at a Glance
| Best Tool | Use Case | Key Differentiator |
|---|---|---|
| Klaviyo | Ecommerce SMS + email in one platform | Shared data layer with email for unified flows and predictive analytics |
| Omnisend | Multichannel ecommerce marketing | SMS included in plan pricing with email and web push |
| Attentive | Enterprise SMS-first brands | RCS support, conversational AI, and the strongest subscriber growth tools |
| Postscript | Shopify-only SMS | Pay-per-SMS with no monthly fee and quick Shopify setup |
| Brevo | Budget multichannel including SMS | Unlimited contacts, volume-based pricing, 180+ country SMS reach |
| SimpleTexting | Non-ecommerce SMS campaigns | Purpose-built for local services, healthcare, and organisations |
| SMSBump (Yotpo) | Shopify + loyalty integration | SMS flows triggered natively by Yotpo loyalty and review events |
Quick Comparison
| Platform | Best For | Free Plan | Starting Price | SMS Channel | Email Included |
|---|---|---|---|---|---|
| Klaviyo | Ecommerce stores needing SMS + email | ✅ Yes (250 contacts) | ~$20/month + SMS credits | ✅ Yes | ✅ Yes |
| Omnisend | Ecommerce multichannel marketing | ✅ Yes (500 emails/mo) | ~$16/month | ✅ Yes (included) | ✅ Yes |
| Attentive | SMS-first enterprise ecommerce | ❌ No | Custom pricing | ✅ Yes (specialist) | ✅ Yes |
| Postscript | Shopify-only SMS | ❌ No (free trial) | Pay-per-SMS | ✅ Yes | ❌ No |
| Brevo | Budget multichannel | ✅ Yes | ~$9/month | ✅ Yes | ✅ Yes |
| SimpleTexting | Non-ecommerce SMS campaigns | ✅ Yes (14-day trial) | ~$35/month | ✅ Yes | ❌ No |
| SMSBump (Yotpo) | Shopify SMS with loyalty integration | ❌ No (free starter) | Pay-per-SMS | ✅ Yes | ❌ No |
What to Look for in SMS Marketing Software
Before comparing platforms, it helps to know which factors actually drive results — because most SMS tools market themselves on the same list of features.
Compliance and deliverability. TCPA compliance in the US, GDPR in the EU, and carrier regulations are non-negotiable. A platform that helps you collect proper opt-ins, manage consent records, and handle opt-outs automatically is not optional — non-compliant SMS campaigns carry significant legal risk. Deliverability infrastructure also varies — platforms with dedicated short codes and established carrier relationships consistently outperform those on shared infrastructure.
Integration depth with your store. For ecommerce, an SMS platform that pulls real purchase data, cart events, and browse behaviour from your store enables the automations that drive actual revenue — abandoned cart, post-purchase, back-in-stock. A platform that only sends broadcast campaigns without store data integration is significantly less valuable.
Pricing model transparency. SMS platforms price in several different ways: per-message credits, monthly plan with included credits, or pay-as-you-go. Some platforms (like Klaviyo) layer SMS credits on top of their email plan in ways that are harder to predict. Knowing the real per-message cost at your expected volume is the most important pricing question before committing.
Two-way messaging. Broadcast-only SMS is a one-way channel. Two-way messaging — where subscribers can reply and the platform handles responses — is increasingly standard for customer service use cases and conversational SMS flows.
1. Klaviyo — Best for Ecommerce SMS + Email Integration
Free plan: Yes (250 contacts) | Starting price: ~$20/month + SMS credits | Best for: Ecommerce stores already using Klaviyo for email who want to add SMS within the same platform
Klaviyo’s SMS offering is the natural choice for the large number of Shopify and WooCommerce stores already using Klaviyo for email — adding SMS means staying in one platform rather than managing two, with both channels sharing the same customer profiles, segmentation, and flow builder.
The integration depth is the key advantage. Because Klaviyo’s SMS and email share the same data layer — purchase history, browse behaviour, predictive analytics, and customer lifetime value — your SMS automations can be as sophisticated as your email flows. An abandoned cart SMS triggered by real cart data, followed by an email if no action is taken, coordinated in a single flow — this is what makes Klaviyo’s SMS more powerful than a standalone SMS tool for ecommerce brands with existing Klaviyo infrastructure.
Key features in 2026:
Unified flow builder — build automations that combine email and SMS in a single workflow, with branching logic that sends SMS when email is not opened, or vice versa.
AI-powered send time optimisation — Klaviyo’s predictive send time applies to SMS as well as email, delivering messages at the window each individual subscriber is most likely to engage.
Conversational SMS — two-way messaging for customer service and post-purchase engagement, managed alongside your marketing flows in the same dashboard.
The honest trade-off: Klaviyo’s SMS pricing model is one of the hardest to predict. It uses credits tied to the wider plan setup rather than a simple standalone SMS bill, making it especially difficult to estimate per-message costs upfront. International SMS coverage is also limited — MMS is only available for US numbers, Canadian toll-free numbers, and Australian long codes, meaning teams relying on rich media cannot treat it as a universal channel. For brands that need global SMS reach, a dedicated SMS platform may be a better fit.
Our Mailchimp vs Klaviyo comparison and Klaviyo alternatives guide cover the broader Klaviyo platform in detail if you are still evaluating whether it is the right fit overall.
Best for: Ecommerce stores already on Klaviyo for email that want to add SMS without introducing a second platform.
Not ideal for: Brands needing transparent, predictable SMS pricing or wide international SMS coverage — Klaviyo’s credit model and geographic limitations are real constraints at scale.
2. Omnisend — Best for Multichannel Ecommerce Marketing
Free plan: Yes (500 emails/month) | Starting price: ~$16/month | Best for: Ecommerce stores wanting email, SMS, and web push in one platform at a lower price than Klaviyo
Omnisend is the strongest all-in-one multichannel marketing platform for ecommerce stores that want SMS included in standard pricing rather than as a paid add-on. SMS credits are bundled into paid plans — the Standard plan starts at $16/month for 500 contacts, and the Pro plan starts at $59/month and removes the email cap while increasing SMS credits.
The SMS functionality covers the full ecommerce automation set — abandoned cart, post-purchase, back-in-stock, browse abandonment, and welcome series — all configurable to trigger SMS alone, email alone, or both in a coordinated sequence. Omnisend’s global SMS reach is broader than Klaviyo’s, supporting sending across more countries out of the box without the MMS geographic limitations.
Key features in 2026:
SMS and email in unified flows — build multichannel automations combining SMS, email, and web push in a single drag-and-drop flow builder, with each channel triggering based on subscriber behaviour.
Pre-built ecommerce automation templates — abandoned cart, welcome series, and post-purchase flows with SMS steps already configured, ready to activate in minutes.
TCPA and GDPR compliance tools — built-in consent management, double opt-in for SMS, and automatic opt-out handling across regions.
24/7 live chat support on all plans including free — one of the few platforms where meaningful support is accessible without a premium plan.
The honest trade-off: Omnisend’s SMS analytics are less granular than Attentive’s SMS-specialist reporting, and its AI features are less sophisticated than Klaviyo’s predictive layer for stores with large, complex datasets. For stores at significant scale where per-message optimisation matters, the specialist platforms may deliver marginal improvements. For most small to mid-size ecommerce stores, Omnisend’s feature set is more than sufficient.
We cover Omnisend in depth in our ActiveCampaign vs Omnisend comparison.
Best for: Small to mid-size ecommerce stores wanting SMS, email, and web push in a single platform with SMS included in plan pricing rather than charged separately.
Not ideal for: Enterprise stores at significant SMS volume where specialist analytics and deliverability optimisation justify a dedicated SMS platform.
3. Attentive — Best SMS-First Platform for Enterprise Ecommerce
Free plan: No | Starting price: Custom pricing (contact sales) | Best for: Mid-to-large ecommerce brands where SMS is a primary revenue channel
Attentive is the market-leading dedicated SMS platform for ecommerce and the benchmark against which other SMS tools are measured on specialist features. Attentive is best for SMS-first brands with large text lists that want two-way conversational texting, and it excels in SMS marketing with RCS capabilities.
RCS (Rich Communication Services) is the most significant 2026 differentiator — Attentive’s RCS support allows SMS messages to include images, videos, carousels, and branded sender names where the recipient’s device and carrier supports it, producing a significantly richer experience than standard SMS. For brands whose SMS strategy goes beyond plain-text notifications, RCS capability is a real competitive advantage.
Key features in 2026:
Two-way conversational SMS — Attentive’s AI Journeys handles inbound subscriber replies intelligently, routing to automations or human agents as appropriate, enabling genuine SMS-based customer service at scale.
Attentive Sign-Up Units — industry-leading subscriber growth tools with two-tap mobile opt-in, timed overlays, and placement across web, email, and in-store touchpoints. Subscriber acquisition is often cited as Attentive’s strongest differentiator — brands using Attentive’s growth tools consistently report higher opt-in rates than competitors.
Advanced segmentation and personalisation — behavioural, transactional, and predictive segmentation at a depth comparable to Klaviyo’s email segmentation, applied specifically to SMS flows.
The honest trade-off: Attentive’s pricing is premium, primarily based on SMS volume, making it suitable for brands with substantial SMS marketing budgets. Custom pricing with no transparent published rates means evaluating total cost requires a sales conversation. Pricing for Attentive can escalate significantly as your contact list grows, so understanding total cost of ownership is crucial before choosing the platform. For smaller stores, Omnisend or Klaviyo’s SMS features deliver comparable everyday functionality at a fraction of the cost.
Best for: Mid-to-large ecommerce brands where SMS is a primary revenue channel, subscriber growth is a priority, and the budget supports a dedicated specialist platform.
Not ideal for: Small businesses or stores where SMS is a secondary channel — the pricing model and sales-led procurement process are not designed for small-scale use cases.
4. Postscript — Best for Shopify-Only SMS
Free plan: No (14-day free trial) | Starting price: Pay-per-SMS | Best for: Small Shopify stores wanting quick, simple SMS setup focused purely on text marketing
Postscript is ideal for small Shopify-only stores prioritising SMS marketing. Its pay-per-message pricing and SMS-focused feature set are practical for companies wanting quick deployment and strong compliance without added platform complexity.
Postscript’s defining characteristic is its Shopify exclusivity — it integrates with Shopify and only Shopify, which means the integration is deep and the setup is fast. Postscript pulls Shopify purchase data, cart events, and customer profiles natively without configuration, and its compliance tools are specifically built around US SMS regulations with Shopify merchant workflows in mind.
Key features in 2026:
Pay-per-SMS pricing with no monthly fee — you pay only for messages sent, with no base subscription cost. For stores with lower SMS volumes or inconsistent sending schedules, this avoids paying a flat monthly fee during quiet periods.
Quick Shopify deployment — most stores are sending their first SMS campaign within an hour of installing the app. No complex configuration, no integration setup — it reads your Shopify data immediately.
Compliance-first setup — double opt-in, TCPA-compliant collection flows, and automatic opt-out management built into the onboarding process rather than requiring manual compliance configuration.
The honest trade-off: Postscript is SMS-only — there is no email channel, no web push, and no multichannel flow builder. Postscript integrates natively with Shopify and supports integrations with various apps and services through Zapier, but if you want email and SMS coordinated in a single platform, you will need to manage two separate tools. For Shopify stores that already have an email platform and specifically want to add SMS without switching their whole stack, this is a feature not a limitation. For stores wanting a single multichannel platform, Omnisend or Klaviyo are the better fit.
Best for: Small Shopify stores that want simple, pay-as-you-go SMS marketing without a monthly subscription and without switching email platforms.
Not ideal for: Non-Shopify stores, brands wanting multichannel email and SMS flows in one platform, or high-volume senders where pay-per-SMS pricing exceeds the cost of a flat-rate plan.
5. Brevo — Best Budget Multichannel SMS Option
Free plan: Yes (300 emails/day, no contact limit) | Starting price: ~$9/month | Best for: Budget-conscious businesses wanting SMS alongside email at the lowest price point
Brevo (formerly Sendinblue) is the most affordable full-featured marketing platform that includes both email and SMS, and its pricing model makes it particularly strong for businesses with large contact lists that send infrequently. Rather than charging by contact count like most competitors, Brevo charges by email send volume — which means a large list does not automatically mean a large bill.
SMS is available as a credit add-on across all Brevo plans, with pricing by message rather than by subscriber. International SMS coverage is broad — Brevo supports sending to over 180 countries, which is a meaningful advantage for businesses with a global or regional audience outside the US and UK.
Key features in 2026:
Transactional SMS — order confirmations, shipping updates, and appointment reminders sent programmatically via API alongside marketing SMS from the same platform. Few tools at this price point handle both transactional and marketing SMS natively.
Multichannel automation — email, SMS, WhatsApp, and push notifications combined in a single automation builder, covering more channels at a lower price than any other platform on this list.
No contact limit on the free tier — unlimited contacts with the free plan, paying only for what you send rather than the size of your list.
The honest trade-off: Brevo’s SMS automation and segmentation capabilities are less ecommerce-specific than Klaviyo, Omnisend, or Attentive. Pre-built ecommerce flows are less refined, and deep Shopify integration is not at the same level as the ecommerce-native platforms. For general business SMS — appointment reminders, service notifications, promotional broadcasts — Brevo covers the use case well. For ecommerce-specific automation like abandoned cart and browse abandonment, the ecommerce platforms deliver better results.
Best for: Budget-conscious small businesses, service companies, and non-ecommerce brands wanting multichannel marketing including SMS at the lowest possible price.
Not ideal for: Ecommerce stores that need deep Shopify or WooCommerce integration and ecommerce-specific automation — Omnisend or Klaviyo are better fits.
6. SimpleTexting — Best for Non-Ecommerce SMS Campaigns
Free plan: Yes (14-day trial) | Starting price: ~$35/month (500 credits) | Best for: Non-ecommerce businesses, local services, and organisations running SMS broadcast campaigns without ecommerce automation needs
SimpleTexting is a purpose-built SMS marketing platform that does not try to be an email platform or an ecommerce suite. For businesses where SMS is the primary communication channel and there is no ecommerce purchase data to integrate — local restaurants, fitness studios, healthcare providers, schools, non-profits, and political campaigns — SimpleTexting’s focused feature set covers the use case more cleanly than a multichannel platform with SMS bolted on.
Key features in 2026:
SMS broadcasts and keyword campaigns — send bulk SMS to subscriber lists, and set up keyword opt-in flows (text SUMMER to 12345 to join) that grow your list automatically. This is the core use case SimpleTexting is built around.
Two-way messaging inbox — a shared team inbox for managing inbound SMS replies, with assignment and internal notes for team-based customer communication.
MMS support — include images, GIFs, and short videos in messages at a standard cost without platform-tier restrictions.
Integrations — connects with Zapier, HubSpot, Mailchimp, Salesforce, and 1,000+ apps for businesses that need SMS to fit into a broader operational stack without building custom integrations.
The honest trade-off: SimpleTexting has no email channel and no ecommerce integration. For Shopify or WooCommerce stores wanting abandoned cart SMS or purchase-triggered flows, SimpleTexting is not the right tool — it does not read store data and its automation is keyword and campaign-based rather than behavioural. For non-ecommerce SMS use cases, it is one of the most purpose-built and easy-to-use options available.
Best for: Non-ecommerce businesses — local services, hospitality, healthcare, education, and community organisations — that want focused SMS broadcast capability without ecommerce features they will not use.
Not ideal for: Ecommerce stores that need purchase-triggered automations, store data integration, or coordinated email and SMS flows.
7. SMSBump (Yotpo) — Best for Shopify SMS with Loyalty Integration
Free plan: No (free starter tier with pay-per-SMS) | Starting price: Pay-per-SMS | Best for: Shopify stores already using Yotpo for reviews and loyalty who want SMS integrated in the same ecosystem
SMSBump, now fully integrated into the Yotpo marketing platform, is the natural SMS choice for Shopify stores already using Yotpo’s reviews, loyalty, or visual UGC products. The integration means SMS campaigns can be triggered by loyalty events — reward milestones, points expiry, tier upgrades — creating a coordinated loyalty and SMS experience that standalone SMS tools cannot replicate without custom integrations.
Key features in 2026:
Yotpo ecosystem integration — SMS flows triggered by review requests, loyalty events, and repeat purchase incentives within the same platform. For stores where loyalty is a core retention strategy, this native integration removes the need for complex Zapier workflows between separate tools.
Shopify-native setup — like Postscript, SMSBump reads Shopify data immediately and supports standard ecommerce automations: abandoned cart, welcome series, post-purchase, back-in-stock.
Pay-per-SMS starter tier — begin sending with no monthly fee, paying only for messages sent. Paid plans ($25/month and above) add advanced automation and higher credit allocations for stores with growing SMS volume.
The honest trade-off: SMSBump’s value is heavily dependent on also using Yotpo’s other products. As a standalone SMS tool without the Yotpo ecosystem, its feature set and pricing are comparable to Postscript without the same depth of community and documentation. For stores not using Yotpo elsewhere, Postscript or Omnisend are likely stronger standalone choices.
Best for: Shopify stores already using Yotpo for reviews and loyalty programmes who want SMS coordinated with those systems without separate integrations.
Not ideal for: Stores not already using Yotpo — the platform’s strongest advantages disappear without the broader Yotpo ecosystem in place.
How SMS Pricing Actually Works
SMS pricing is one of the most confusing aspects of choosing a platform, and the model varies significantly between tools.
Per-message credits — you buy a block of credits and each message costs a set number, with MMS typically costing more than SMS. Postscript and SMSBump use this model. Predictable per-unit cost, but can be expensive at high volume.
Plan-included credits — a flat monthly plan includes a set number of SMS credits, with additional credits available at a per-message rate once the included allowance is used. Omnisend and Klaviyo use this model. Better value for consistent monthly sending volume.
Usage-based add-on — you pay your base email marketing plan price, then add SMS credits on top at a per-message rate. Brevo and Klaviyo (to varying degrees) use this model. Makes sense if SMS is a secondary channel to email.
Custom volume pricing — Attentive does not publish standard rates, with pricing negotiated based on send volume and contract terms. Designed for high-volume enterprise senders.
The practical calculation before choosing: estimate your expected monthly SMS sends, find the per-message cost at that volume on each platform, and compare against the base plan cost. A platform that looks cheap per message can be expensive total when base plan costs are included.
Which SMS Marketing Platform Should You Choose?
You are already on Klaviyo for email: Add Klaviyo SMS. Staying in one platform with shared data outweighs the pricing transparency trade-off for most stores.
You want email and SMS in one affordable platform: Omnisend. SMS included in plan pricing, strong ecommerce automations, and 24/7 support make it the best value multichannel option.
SMS is your primary revenue channel and budget is not the constraint: Attentive. The specialist platform for SMS-first brands at scale, with RCS, conversational AI, and the strongest subscriber growth tools available.
You run a Shopify store and want simple pay-as-you-go SMS only: Postscript. Quick setup, no monthly fee, strong compliance — the simplest path to Shopify SMS.
You have a large contact list and send infrequently: Brevo. Volume-based pricing means a large list does not automatically mean a large bill.
You are not an ecommerce business: SimpleTexting. The cleanest SMS broadcast tool for local services, hospitality, healthcare, and community organisations.
You use Yotpo for loyalty and reviews: SMSBump. The native integration makes loyalty-triggered SMS flows significantly easier than any alternative.
Final Verdict
The right SMS marketing platform is the one that fits how SMS fits into your broader marketing operation — not the one with the longest feature list.
For ecommerce stores, the decision typically comes down to three options: Klaviyo if you are already embedded in its platform and want unified email and SMS data, Omnisend if you want the most affordable multichannel option with SMS included in plan pricing, or Attentive if SMS is a primary revenue channel and the investment in a specialist platform is justified by the volume.
For non-ecommerce businesses, SimpleTexting covers the broadcast and two-way use case without forcing you into an ecommerce-oriented platform. Brevo is the budget pick for any business wanting SMS alongside email at minimal cost. Postscript and SMSBump serve Shopify-specific needs with different strengths depending on whether you are looking for standalone SMS or Yotpo ecosystem integration.
If you are building out your broader ecommerce marketing stack alongside SMS, our guide to the best ecommerce marketing tools in 2026 covers the full picture — and our guide to the best AI email marketing tools in 2026 covers how AI is being applied to the email side of the equation.
Frequently Asked Questions
What is the best SMS marketing software in 2026?
It depends on your use case. For ecommerce stores wanting SMS and email in one platform, Klaviyo and Omnisend are the strongest picks. For SMS-first brands at scale, Attentive is the specialist choice. For non-ecommerce businesses, SimpleTexting covers the use case most cleanly.
How much does SMS marketing software cost?
Pricing varies significantly by model. Postscript and SMSBump charge per message with no monthly fee — suitable for lower-volume senders. Omnisend includes SMS credits in its monthly plan from $16/month. Brevo charges by send volume rather than contact count. Attentive uses custom enterprise pricing. Expect to pay $0.01–$0.05 per SMS depending on the platform and destination country.
Is SMS marketing better than email marketing?
They serve different purposes. SMS has a higher open rate (90%+) and is better for time-sensitive, high-urgency messages — flash sales, shipping alerts, abandoned cart nudges. Email is better for longer content, nurturing sequences, and lower-cost volume sending. The most effective ecommerce brands use both in coordinated flows rather than choosing one over the other.
Do I need a separate SMS platform or can I use my email tool?
If you are already on Klaviyo or Omnisend, adding SMS within the same platform is almost always the better choice — shared customer data makes coordinated email and SMS flows significantly more effective. If you need SMS only, without email, a dedicated tool like Postscript or SimpleTexting is simpler and often cheaper.
Is SMS marketing legal?
Yes, but compliance is non-negotiable. In the US, TCPA regulations require explicit written consent before sending marketing SMS. In the EU, GDPR applies. Every platform on this list includes opt-in collection and automatic opt-out management — but you are responsible for ensuring your list was collected with proper consent before importing it.
What is RCS and does it matter for SMS marketing?
RCS (Rich Communication Services) is the next generation of SMS — it supports images, videos, branded sender names, and interactive buttons where the recipient’s device and carrier support it. Attentive is currently the only platform on this list with RCS support. For most small businesses, standard SMS is sufficient — RCS matters most for enterprise brands running high-frequency, visually rich campaigns.