How we make this list: we compare pricing pages, product documentation and public user reviews. Ratings come from G2, Capterra or Trustpilot, with the date we checked them.
Key takeaways
- Attentive is the enterprise SMS platform: deepest tooling, quoted pricing, built for large lists.
- Klaviyo puts SMS inside the email platform most Shopify stores already run, with a free tier to start.
- Omnisend is the value unified option, with SMS credits inside ecommerce plans.
- Yotpo suits stores buying a retention suite (reviews, loyalty, SMS) from one vendor.
- Recart and TxtCart cover Messenger and conversational checkout recovery angles Postscript does not centre.
Quick comparison
| Tool | Best for | Starting price | Free plan |
|---|
 Attentive | Enterprise SMS marketing | See website | No |
 Klaviyo | Email and SMS in one platform | Free | Yes |
 Omnisend | Unified messaging at a value price | Free | Yes |
 Yotpo SMS | SMS inside a retention suite | See website | No |
 Recart | Messenger and SMS for Shopify | See website | No |
 TxtCart | Conversational cart recovery texts | See website | No |
 SlickText | General SMS marketing beyond Shopify | $29/month | No |
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The best Postscript alternatives in 2026
#1Attentive
Best for: Enterprise SMS marketing4.6/5 on
G2 (1,078 reviews, checked Oct 2026)
Visit attentive.com
Starting priceSee website
Free planNo
Attentive is where Postscript customers graduate to when SMS becomes a top three revenue channel. Its growth tools (sign up units that convert, identity resolution across devices), its journey builder and its deliverability operation are built for brands sending to millions, and its pricing, quoted per account on volume, reflects that altitude without apology.
The fit test is arithmetic: if a one percent lift in campaign revenue across your list pays the contract difference many times over, Attentive's depth is cheap. If your list is five thousand numbers and your SMS revenue is a rounding error, the same contract is a tax on ambition. Stores know which side of that line they live on; price Attentive when you cross it, not before.
What we like- The category's enterprise benchmark: list growth, segmentation and journey tooling at serious depth, two way conversational messaging and AI optimisation for send time and copy, deliverability and compliance teams behind the platform, used by large retail brands with lists in the millions
Watch out for- Quoted, contract pricing that small stores will find steep, built for scale: a young store pays for machinery it cannot feed, onboarding is a project, not an afternoon
#2Klaviyo
Best for: Email and SMS in one platform4.6/5 on
G2 (1,368 reviews, checked Oct 2026)
Visit klaviyo.com
Starting priceFree
Free planYes
Klaviyo is the consolidation answer. Most Shopify stores already run Klaviyo for email, and its SMS add on deletes a vendor, a bill, a segment sync and a consent database from the stack. A flow can email on Monday, text the non openers on Wednesday and report the whole journey in one place, which is how retention marketing actually thinks.
What you surrender is Postscript's SMS first obsession: the two way sales conversations, the text native growth tricks and support that talks about nothing else. For the majority of stores, whose SMS is campaigns and flows rather than a sales floor by text, Klaviyo's unity beats the specialist's edge, and the free tier makes the experiment riskless.
What we like- SMS runs inside the email platform most Shopify stores already use, one profile, one segment builder and one analytics view for both channels, free tier starts a list
- SMS billed on sends alongside email plans, flows coordinate email and text in a single journey instead of two tools arguing
Watch out for- SMS depth (conversational selling, desktop inbox for replies) trails Postscript and Attentive, per send costs add up fast on large, frequent campaigns, the platform's centre of gravity is email: SMS can feel like the second child
#3Omnisend
Best for: Unified messaging at a value price4.6/5 on
G2 (1,255 reviews, checked Oct 2026)
Visit omnisend.com
Starting priceFree
Free planYes
Omnisend plays Klaviyo's unification game at a friendlier price and with an ecommerce only focus that keeps the product tight. Its plans bundle SMS credits alongside email sends, which makes monthly cost predictable in a way pure per text metering never is, and its automations cover the standard money flows out of the box across channels.
For a small or mid sized store whose SMS programme is disciplined campaigns and automations (not a conversational sales operation), Omnisend is frequently the best value on this page. Model your sends honestly: the credit bundle is a bargain at expected volume and a constraint at three times it, and overage maths belongs in the decision, not the first invoice.
What we like- Email, SMS and push in one ecommerce platform at under Klaviyo prices, SMS credits included inside paid plans rather than everything metered apart, prebuilt ecommerce automations (abandoned cart, browse, post purchase) span channels, free plan includes real sending volume for a small store
Watch out for- SMS sophistication trails the specialists, as with Klaviyo, brand and template ecosystem is smaller than the market leader's, heavy texters will outgrow its campaign tooling before its email
Starting priceSee website
Free planNo
Yotpo's SMS (the product line that began as SMSBump) makes sense inside a specific strategy: one vendor for the retention stack. Reviews feed social proof into texts, loyalty status segments the list, and subscription customers get their own flows, all sharing one profile of the customer. For a store already running Yotpo reviews or loyalty, adding its SMS is a smaller step than adopting any standalone tool here.
Standalone, the case is thinner: priced by module and volume on quote, it competes with specialists who do only this. Judge Yotpo as a suite decision (its total for the pieces you will genuinely run) rather than as an SMS line item, and it either wins clearly or drops out early, both useful outcomes.
What we like- SMS sits beside Yotpo's reviews, loyalty and subscriptions products, one retention vendor, subscriber data from reviews and loyalty enriches SMS targeting, strong Shopify integration and ecommerce campaign tooling, flows and segmentation built for stores, not generic lists
Watch out for- The suite logic only pays if you use more of Yotpo than the SMS module, pricing is modular and quoted in a way that needs a careful total, conversational commerce features trail Postscript's focus
Starting priceSee website
Free planNo
Recart is the alternative for stores whose customers live in Meta's world. Its Messenger marketing (opt ins at checkout and on site, abandoned cart conversations inside Messenger) reaches shoppers in the app they already chat in, and its SMS covers the rest. For stores in niches where Messenger engagement is proven, fashion and beauty among them, that channel mix outperforms a text only programme.
The dependency deserves its sentence: Messenger marketing runs on Meta's platform policies, message windows and pricing, and those have tightened before. Recart's own pricing has historically aligned with generated revenue; confirm the current model on its site. As one channel inside a wider programme it is a sharp tool; as the whole programme it is a rented one.
What we like- Built around Messenger conversations first, with SMS alongside, sponsored and automated Messenger flows reach customers inside Meta's apps, strong abandoned cart and post purchase sequences for Shopify stores, pricing historically tied to the revenue it generates for the store
Watch out for- A Messenger centred strategy rides on Meta's rules and costs, which shift, stores whose audience ignores Messenger get half the product, smaller platform than the email giants on this list
Starting priceSee website
Free planNo
TxtCart does one job with unusual commitment: when a shopper abandons a cart, a real conversation starts by text, with humans backed by software answering questions and closing the sale, in exchange for a cut aligned with recovered revenue. For stores with healthy order values and hesitant, question heavy customers, that conversation recovers carts no automated discount text touches.
It complements rather than replaces a platform like Klaviyo or Postscript, which is why it belongs on an alternatives list honestly labelled as a partial one: some stores discover the recovery conversation was the only part of their SMS programme making money, and shrink the rest. Pricing is published on its site and tied to its performance model; run its trial against your real abandon traffic.
What we like- Human backed conversational texts recover abandoned carts, two way replies handled by a team assisted by AI, not just automations, pay structure has historically aligned with recovered revenue, dead simple install for Shopify stores
Watch out for- Narrow by design: it is a cart recovery specialist, not your campaign platform, per conversation economics need your average order value to cooperate, you will still need a general SMS tool for campaigns and flows
#7SlickText
Best for: General SMS marketing beyond Shopify4.8/5 on
G2 (1,934 reviews, checked Oct 2026)
Visit slicktext.com
Starting price$29/month
Free planNo
SlickText is the exit for the store that is also a place: a retailer with a shop floor, events and a local list, whose SMS needs keywords on signage and QR codes on tables more than Shopify product sync. Its published plans (from $29 a month with bundled messages) keep budgeting simple, and its feature set covers campaigns, automations and two way conversations competently.
Pure ecommerce operators will miss the specialists' depth: the abandoned browse flow keyed to viewed products, the post purchase choreography. SlickText's trade is breadth across online and offline for depth in one channel's platform, and for hybrid businesses that is the correct trade at a fair, public price.
What we like- A general SMS platform if your store's life extends past Shopify, published plans from $29 a month with message bundles, list growth tools (keywords, QR codes, web forms) suit physical locations too, two way inbox, automations and drip campaigns cover the standard programme
Watch out for- Ecommerce depth (Shopify data, product level flows) trails the specialists, per plan message bundles need watching in peak season, no free plan
- A paid trial is the way in
How we chose
Eligibility required a working SMS marketing product with a Shopify route or a clear ecommerce practice, live in October 2026. Postscript is excluded as the subject. Pricing models are stated rather than flattened, because SMS is usage billed nearly everywhere: Attentive and Yotpo quote, Klaviyo and Omnisend bundle credits or per send pricing inside broader plans (both with free entry), and SlickText publishes plan prices from $29 a month. Where a vendor's model has changed historically, the entry says to confirm the current structure on its site.
What an SMS switch must not break
Your consent records are the business. Every opt in (who, when, from which form, with which wording) must export from Postscript and import into your finalist with its history intact, because in a complaint or a carrier audit, the record is the defence. Test the migration with your oldest thousand numbers before the whole list moves, and keep the export file forever; storage is cheap and audits are not.
Your short code or number, and its registration, need a plan. Whether you keep a toll free number or a short code, the 10DLC and carrier paperwork follows the number through a process your new vendor should drive and timetable. A switch that strands your sending identity for a week in peak season costs more than any platform saving on this page.
And your growth engine restarts at zero unless you port it. Popups, checkout opt ins, keywords and QR codes all point at the old platform. Inventory every capture surface before the move, rebuild each in the finalist, and run both systems in parallel for one campaign cycle. SMS lists are the slowest asset in ecommerce to rebuild and the fastest to strand.
Frequently asked questions
Why do stores leave Postscript?
Usually one of three reasons: cost at scale, since usage pricing grows with the list and the ambition; consolidation, moving SMS into the email platform to run one programme; or scope, needing channels or markets a Shopify first specialist does not centre. Feature complaints are rarer than invoice and architecture complaints.
Is SMS marketing still legal and deliverable in the US?
Yes, with the rules doing real work: express written consent for marketing texts, registration of your brand and campaigns under the 10DLC system for application to person messaging, quiet hours by the recipient's time zone, honest sender identity and one tap opt out honoured instantly. Every platform here supplies the mechanics; the consent quality of your list remains your legal exposure.
Which alternative is cheapest for a small Shopify store?
Klaviyo or Omnisend on free tiers while the list is small, because both start at zero and bundle SMS into plans you may already pay for email. SlickText's $29 entry is the cheapest standalone published plan. Attentive and Yotpo are not small store purchases and do not pretend to be.
Can I keep my SMS list if I switch?
Yes: your subscribers and their consent records are your data. Export contacts with opt in timestamps and sources, import them into the new platform with that history mapped, and keep the original export. What does not transfer automatically is your sending number's registration paperwork and your capture forms, which must be rebuilt and re registered as the guide section describes.
Do I need SMS if I already do email well?
Need is too strong; the case is incremental reach. Texts are read in minutes and convert abandoned carts and time sensitive offers at rates email rarely matches, while email carries the long, rich campaigns. Most healthy stores run both off one platform, which is exactly why Klaviyo and Omnisend appear at the top of this list beside the specialists.
Sources we checked (0)
Is your product missing or out of date?
We review this list regularly. Vendors can request a listing, send updated pricing or ask about featured placement.
Shihab Mia · Founder, Rankite
Shihab has 5+ years in B2B and SaaS SEO. He writes Rankite's software buying guides from pricing pages, documentation and public user reviews. More about Shihab.