Best Shopify SMS marketing app in 2026: ranked by store size, with real cost per message
There is no single best Shopify SMS marketing app, and the lists that crown one are usually written by the app crowning itself or an affiliate paid to. The honest answer depends on how large your store is and how hands-on you want to be: Postscript is the best Shopify-native pick for most mid-to-large stores, Attentive owns the enterprise tier, Recart is the choice when you want the whole program run for you, and Omnisend or Klaviyo make sense when you would rather run email and SMS from one app. But SMS carries two things email does not, and neither is on the pricing page in bold: you pay per message sent (roughly $0.007 to $0.015 each in the US, before any platform fee), and you are on the hook for TCPA consent rules that are stricter than email's. Below we rank the top SMS apps by use case from live App Store ratings (as of July 2026), show the real cost-per-message and the minimum spend the "free" plans hide, and cover the consent layer most roundups skip. We did not install and hands-on test these apps in a live store, and we say so.
Best at enterprise: Attentive (4.7) - two-tap opt-in and scale, but effectively $500+/mo and sales-led.
Best done-for-you / managed: Recart (4.7) - a team runs your SMS for you, from around $299/mo.
Best if you already run Yotpo: Yotpo Email & SMS (4.8) - one bill with your reviews and loyalty.
Best one app for email plus SMS: Omnisend (4.8) or Klaviyo (4.7) - run both channels in a single platform.
The honest caveat: SMS is a paid-per-send channel with stricter consent law than email. Prices below are as of July 2026 and drift; confirm the current per-message rate and any minimum before you commit.
First, the honest tradeoff: SMS is opened, but it is not free or unregulated
SMS gets read. The commonly cited figure is a roughly 98% open rate, and it is worth naming plainly: that number is an industry estimate derived from delivery and response data, not a directly measured open rate (text messages have no open pixel the way email does), and the major vendors converge somewhere in the 95 to 98% range. Treat it as a strong directional signal, not a precise metric. What is not an estimate is the cost structure. Unlike email, where you largely pay for the size of your list, SMS bills you per message sent, typically $0.007 to $0.015 per message in the US on top of a platform fee, so a single campaign to a large list has a real, countable cost every time. And SMS is governed by the TCPA, which is meaningfully stricter than email's CAN-SPAM. Get the app right and you also have to get the consent right.
The consent rule most roundups skip: US marketing texts require prior express written consent under the TCPA (47 U.S.C. §227). A pre-checked box or a purchase alone does not count; the shopper has to affirmatively opt in to marketing messages, and you must honor opt-outs. The one-to-one consent provisions took effect around January 27, 2025, and the consent-revocation rules on April 11, 2025. Read the FCC's own material: the TCPA rules (FCC, PDF) and the rules on revoking consent. This is not legal advice; the good SMS apps build compliant opt-in flows, but the liability is yours.
The real cost: per message, platform fee, and the minimum spend
Here is where SMS apps actually separate, and where the "free plan" language does the most work. Postscript's plan is advertised as free but carries a roughly $49/mo message minimum, so it is not really free; Attentive is enterprise and effectively starts around $500/mo and up; Recart is a managed service from about $299/mo; Yotpo's SMS sits behind a platform fee around $79/mo. The per-message rate (roughly $0.007 to $0.015 in the US) then rides on top of all of it. Confirm the current numbers on each vendor's page before you commit, since these tiers move.
| App | SMS cost / msg (US) | Platform fee | Min spend | Funding |
|---|---|---|---|---|
| Postscript | ~$0.007 + carrier | usage-based tier | ~$49/mo minimum | VC-backed |
| Attentive | usage / negotiated | enterprise contract | ~$500+/mo effective | VC-backed |
| Recart | SMS volume + managed | managed service | ~$299/mo and up | small VC |
| Yotpo Email & SMS | per-message add-on | ~$79/mo | bundled with Yotpo | Yotpo-owned |
| Omnisend | ~$0.015 (US), credits | from $16/mo (both) | credits expire 60 days | bootstrapped |
| Klaviyo | SMS credits | SMS from $15/mo | bills active profiles | public |
The top picks, in detail
SMS open rate (estimate)
A commonly cited industry estimate from delivery and response data, not a directly measured open rate.
Cost per message (US)
Every send has a real, countable cost, on top of the platform fee. SMS is a paid channel, not a flat subscription.
Postscript "free" minimum
The plan marketed as free actually requires a roughly $49/mo message minimum. Budget for it from day one.
SMS is the most opened channel you have and the one with a meter running on every send. The app choice is really a cost-per-message and consent choice wearing a feature list.MerchantStack analysis, July 2026
The three things that actually decide it
Frequently asked questions
What is the best Shopify SMS app overall? For most mid-to-large stores that want a dedicated, Shopify-native tool, Postscript, with transparent per-message pricing (mind the roughly $49/mo minimum on its "free" plan). Attentive at enterprise, Recart if you want it managed for you.
How much does SMS marketing cost on Shopify? Expect a platform fee plus roughly $0.007 to $0.015 per message in the US, so the bill scales with how much you send rather than just your list size. That is the core difference from email; see email vs SMS marketing for Shopify.
Is that ~98% SMS open rate real? Treat it as directional. It is a commonly cited industry estimate derived from delivery and response data, not a directly measured open rate, and vendors converge in the 95 to 98% range. SMS is genuinely high-visibility, but the precise number is an estimate.
Do I need consent to text customers? Yes. US marketing SMS requires prior express written consent under the TCPA, and a purchase or pre-checked box does not count. This is not legal advice; read the FCC's TCPA rules and confirm your opt-in flow is compliant.
Should I run SMS in the same app as email? Often yes, for simplicity. Omnisend or Klaviyo run both channels from one platform and one dataset. A dedicated app like Postscript adds SMS depth; whether that depth is worth a second tool depends on how central SMS is. Pair SMS with your cart recovery via the best Shopify abandoned cart app.
Bottom line
Skip the self-interested leaderboards. If SMS is a real channel and you want a Shopify-native tool, start with Postscript and budget for its minimum. Step up to Attentive only at enterprise scale, hand it to Recart if your bottleneck is time rather than money, stay with Yotpo if you already live there, and reach for Omnisend or Klaviyo when running email and SMS from one app matters more than squeezing out the last bit of SMS depth. Whatever you pick, model your real cost per message at the volume you actually send, and get consent right before your first campaign. Do those and the "which app" question mostly answers itself.