Best Shopify SMS Marketing Apps: Costs and Reply Handling

How this list was selected

Apps selected because their current pricing or product pages document Shopify SMS sending and reply handling. Listed in no order of merit; prices are reproduced only with their units and terms.

Selection method reviewed 2026-11-12.

Why one app should own sending

Before enabling several messaging apps, inspect the flows and triggers in each one. Overlapping reminders can send duplicate messages if both are active for the same event. Choose the owner of each flow, check consent handling and agree how the team will read attribution from separate tools. App installation alone does not establish which templates are enabled.

A dedicated recovery tool such as CartStack Recover is a good example of an add-on. It installs as a Shopify app, runs alongside your existing email platform, and follows up across email, SMS and browser push, up to three times per channel for each abandonment. It also alerts a named person when a high value cart is abandoned. That is useful, but if your primary SMS app also sends cart texts, one of the two sequences has to go.

What the published prices are made of

Headline monthly prices for SMS apps are not comparable on their own. One includes a block of messages, another caps orders, another bills every message on top of the fee, and carrier fees are handled differently. The table separates each published plan into the parts you are actually billed for.

Recart’s visible entry SMS bundle starts at $500 per month on a quarterly commitment, with separate carrier fees. TxtCart’s published tiers use monthly order eligibility, so account for that as the store grows. Postscript Starter lists a $49 monthly minimum despite a $0 platform fee. Compare the actual recipient countries, SMS or MMS units and included work before deciding which quote fits your usage.

How the main apps differ in practice

Postscript gives every plan a visual flow builder with abandonment, welcome, upsell and shipping templates, segmentation on Shopify data, custom attribution windows and response management, meaning your team can reply to subscribers inside the app. Its separate AI plan, $699 a month with per message rates from $0.003 to $0.30, adds Shopper, which it describes as one-to-one agentic marketing journeys, plus Brand Center controls for AI voice. A designated short code costs $750 a month through the carriers, passed through without markup, if you outgrow toll-free throughput.

Recart offers list-growth tools and a combined List Growth plus SMS scope. Its visible starting SMS bundle has a quarterly commitment and separate usage and carrier charges. If you want managed campaign work, have the proposal name the onboarding, success management, flow and campaign responsibilities included, rather than assuming the entry bundle covers them.

TxtCart starts at $29 a month for up to 500 orders and includes cart and checkout recovery flows, campaigns, popups and an AI Agent that sells and supports, billed at $0.99 per resolution, with an in-app escalation queue for conversations it should not handle alone. It also sells P2P Cart Recovery, in which human staff follow up abandoned carts one to one for 10% of recovered sales, and a managed program from $749 a month.

Klaviyo is the choice when SMS should share a profile, segments and reporting with email. Its Customer Agent handles conversations around the clock, and its last touch attribution across email and SMS avoids double counting between the two channels.

Attentive is built for larger retail programs. Its Concierge product answers shoppers with live agents and conversational AI working together, using purchase history and browsing behaviour to decide when to recommend. Pricing is quoted after a demo.

Assign the replies before you launch

These providers describe different reply-handling options. Establish who, or what, answers a shopper and what context they can use. Postscript gives your team an inbox; TxtCart answers with an AI agent and escalates; Klaviyo offers its Customer Agent; Attentive offers Concierge with live agents. For Recart, ask the proposal to distinguish merchant account support from responsibility for answering shoppers.

Write down who answers cart and campaign replies, what response coverage your proposal includes and what cart or order information that person or system can use. If a marketer will handle the inbox, include that work in the staffing decision. A provider’s reply feature and an agreed operating responsibility are different questions.

Choose who handles the conversation

The SMS app you choose needs a clear role for replies as well as sends. Some proposals include an AI agent or human service. Others leave more of the conversation with your team. Compare that scope before adding another tool.

Zobi is built for stores that want shopper conversations handled in one running thread. Cart recovery, replies, reorders and add-ons use the cart, the last reply and purchase history. That gives you a specific reason to consider it alongside the campaign, signup and sending requirements in this guide.

Use a product question your customers already ask to compare the options. Inspect the proposed answer, the context it uses and the conversation history. Zobi describes campaign approval and full transcript visibility, so check those controls too. Decide which service owns each message before enabling overlapping recovery activity.

If your chosen SMS app already handles the required conversations well, keep that setup. If you want Zobi to handle that part of the customer relationship, see how Zobi works for Shopify stores and apply. Free to apply.

Making the choice

Start from how you want to be billed and who will run the program, because those two answers eliminate most options. Then read each shortlisted plan through the components in the table, with your own US and international volumes, and confirm the commitment term in writing. Finally, name the owner of replies. An SMS app that is cheap to send from but leaves shoppers unanswered is not the best Shopify SMS app for your store.

Sources and scope

This guide compares provider documentation for the buying decision described above. Confirm plan terms and the proposed setup with each provider before changing your store.

Txtcart Pricing · Recart Pricing · Klaviyo Sms · Attentive Concierge · Postscript Pricing · Zobi Dtc.