Email & SMS14 min readUpdated October 14, 2026

Best SMS Marketing Platform for Ecommerce: How to Choose, Tool by Tool

Klaviyo, Postscript, Attentive, Omnisend, Shopify Messaging and Twilio compared from their own pages: numbers, 10DLC, quiet hours, consent, prices.

Nick Bonnassies, CMO at Tagada · checked against 23 sources

Article summary

TL;DR

The best SMS marketing platform for an ecommerce brand is the one that reads your store's checkout and order events, records consent, registers your sending number and holds texts during quiet hours. Klaviyo and Omnisend pair SMS with email, Postscript is SMS-first on Shopify, Shopify Messaging stays in the admin, and Twilio is for building your own.

Pick on four tests before features: store events that trigger texts, consent records, number registration handled for you, and quiet hours by the recipient's time zone.
Klaviyo, Postscript, Omnisend and Shopify Messaging send US texts from toll-free numbers by default. 10DLC registration matters when you send from an ordinary 10-digit number, typically on Twilio.
Throughput is set by the number type and, on 10DLC, by your Trust Score: Twilio lists 12 to 225 messages per second across the major US networks for standard campaigns, and 3 per second by default on a toll-free number.
Pricing models differ: per message plus a plan fee (Postscript, Omnisend), a dollar plan spent per message (Klaviyo), pay per message (Shopify Messaging, Twilio), or quote only (Attentive).
No vendor publishes delivery rates measured the same way. Ask for delivery reports by carrier and error code, and judge on your own data.

Want to go further? Ask

On this page

Every SMS platform for ecommerce sends texts. What separates them is everything around the send: which store events can trigger a text, how consent is captured and stored, who registers your sending number with the carriers, and whether a text waits when it's 10 p.m. where the customer lives. This guide gives the criteria, then compares Klaviyo, Postscript, Attentive, Omnisend, Shopify Messaging and Twilio using only their own pages, read on October 14, 2026.

The legal rules (TCPA consent, CTIA guidelines, 10DLC, EU consent) are covered in our guide to SMS marketing for ecommerce. This page is about choosing the tool.

Which SMS marketing platform is best for ecommerce?

The right tool depends on where your store runs and whether you want SMS alone or with email. Start from your situation, then check the tool against the criteria in the next section.

Your situation	Start your shortlist with	Why
Shopify store, SMS as its own channel	Postscript	Built on Shopify data, per-message rates published, toll-free number verified at no charge7
Email and SMS in one tool, Shopify or WooCommerce	Klaviyo, Omnisend	Both channels share one profile and one flow builder4 13
Small Shopify store, a few campaigns a month	Shopify Messaging	Campaigns from the Shopify admin, pay per message17
Large program, several countries, budget for a quote	Attentive	Usage-based pricing on quote, 20+ countries listed10 12
Developers on staff, custom checkout or app	Twilio	You build triggers, consent and quiet hours on an API19 22

This isn't a ranking. Each row is a starting point, and the tables further down show what each vendor documents.

What to check before you compare features

Feature pages look alike: templates, flows, segments, AI. These eight criteria are where tools actually differ for a DTC brand.

Store integration and events
Native connection to Shopify, WooCommerce or your platform, with checkout started, order placed, fulfilled and refunded events arriving fast enough to trigger a text.
Consent capture and proof
A checkout and form opt-in, double opt-in if you want it, and an exportable record of each consent: time, source, wording shown.
Number registration handled
The tool submits your toll-free verification, 10DLC brand and campaign, or short code application, and shows you the status.
Quiet hours enforced
Texts held until morning in the recipient's time zone, with state rules where they're stricter.
MMS and two-way
Images when the offer needs one, and a number customers can reply to. Some sender types can't receive replies.
Segmentation
Segments built from orders, products and subscriptions, not only from campaign clicks.
Pricing model
Per message, a monthly plan spent per message, plan plus usage, or quote. Carrier fees included or added.
International
Which countries you can text, with which sender type, at what rate per country.

Checkout and payment events: the trigger test

The texts that bring revenue start from a store event, not from a calendar. An SMS tool is only as good as the events it receives.

Klaviyo documents this for WooCommerce: a Started Checkout event when a shopper reaches checkout and enters a billing email, and a Placed Order event when Klaviyo syncs an order in processing status.5 On Shopify, Klaviyo says SMS consent syncs once the shopper enters a phone number, ticks the SMS box and clicks "Continue to shipping", before the order is finished.6 That's what makes an abandoned checkout text possible for someone who never paid.

Ask every vendor which of these events it receives natively, which need a webhook or an app, and how fast each one arrives:

Event	Text it triggers	What to ask
Checkout started, no order	One abandoned checkout reminder	Does the event carry SMS consent given at checkout?
Order paid	Order confirmation	Is it triggered by payment, or by order creation?
Payment declined at checkout	A link back to pay another way	Is a decline visible at all, or only "no order"?
Subscription renewal coming	Reminder with amount and date	Does it come from your subscription app?
Renewal payment failed	Update-card link	Does the flow stop as soon as the card is updated?
Refund or chargeback	Suppress marketing texts	Can a refund or dispute remove someone from campaigns?

The stop condition matters as much as the trigger

A failed-payment text that keeps going after the customer has paid is worse than no text. For every payment flow, check the exit rule: the event that ends the sequence, and how quickly it reaches the SMS tool.

Payment flows depend on your checkout and billing systems more than on the SMS tool. What each payment message should say is in payment confirmation email. The recovery sequence for renewals is in what is dunning, and the causes of failed renewals in subscription payment failures. For the abandoned checkout side, see how to reduce cart abandonment. If your checkout sends events through webhooks, confirm the SMS tool can receive them.

US marketing texts need prior express written consent, and carriers expect you to keep proof of it. The details are in SMS marketing for ecommerce. What to check in a tool:

A separate, unchecked SMS box at checkout and on forms, with the full disclosure next to it.
Double opt-in as an option. Attentive says its standard flows use double opt-in to reaffirm consent and validate phone numbers.11 Klaviyo recommends it.6
A record per subscriber: Attentive describes records of opt-in, opt-out and message activity in its audit tool.11 Ask every vendor to export one sample record.
Opt-out across all flows when the customer replies STOP or a plain-language equivalent.
Reply capability. Klaviyo says a number must be able to receive SMS for double opt-in, keywords such as STOP, and two-way conversations; branded sender IDs can't receive replies.1

On Twilio, the opt-out list is handled for you: STOP and the other default keywords add the number to a block list, and later messages to it fail.22 Consent capture and quiet hours are left to you.

Sending numbers: 10DLC, toll-free or short code

The number type decides how you register, how fast you can send and how much it costs. Most ecommerce SMS tools pick a toll-free number for you in the US.

Number type	How it's approved	Who uses it by default
Toll-free	Toll-free verification	Klaviyo (US and Canada default), Postscript, Omnisend, Shopify Messaging1 8 14 16
10DLC (ordinary 10-digit number)	Brand and campaign registered with The Campaign Registry through your provider	Twilio and other messaging APIs20
Short code (5 or 6 digits)	Application and carrier review	Optional, for high volume, monthly fee1 8

Toll-free verification, as the vendors describe it:

Klaviyo assigns the number and submits it for verification once you give your business information. It takes 2 to 5 business days, and not all industries are eligible.1
Postscript assigns a toll-free number when the shop is created. The number and its verification are free.8
Omnisend requires a verified toll-free number to text US and Canada contacts. It usually takes about 5 business days, up to 2 weeks, with no expedited option. SHAFT accounts (sex, hate, alcohol, firearms, tobacco) are not verified.14
Shopify Messaging asks for contact, business, privacy policy and terms of service details. Registration takes 2 to 5 business days. The sender number is assigned at random and can't receive replies.16

Short codes cost more and take longer. Postscript charges $750 a month for one and audits your opt-in methods during the application. It says short codes are 7x faster for SMS and 10x faster for MMS on average, a figure it publishes without method.8 Klaviyo recommends a short code above 300,000 messages at a time and says approval takes several weeks.1

10DLC registration and throughput

A2P 10DLC is the US carrier system for business texts from ordinary 10-digit numbers. A brand can't register with The Campaign Registry (TCR) itself; it goes through a messaging provider.23 So "the best platform for 10DLC registration" is the provider that submits your brand and campaign correctly, shows you the result, and doesn't mark up the fees.

Throughput is not set by the platform. Twilio's documentation says it depends on brand type, campaign type and, for Standard brands, a Trust Score from 0 to 100 assigned during secondary vetting.21

Fig. 1A2P 10DLC throughput for standard campaigns, as published by Twilio

Trust Score or campaign	Total toward major US networks	AT&T	T-Mobile	Verizon
75 to 100	225 MPS	75	75	75
50 to 74	120 MPS	40	40	40
1 to 49	12 MPS	4	4	4
Low Volume Standard brand (no vetting)	12 MPS	4	4	4
Low Volume Mixed campaign	3.75 MPS	1.25	1.25	1.25

Your Trust Score sets the ceiling

Messages per second (MPS), SMS. Source: Twilio Help Center, Message throughput and Trust Scores for A2P 10DLC, read October 14, 2026. Toll-free numbers sit outside this table: 3 MPS by default at Twilio, more on request.

The same page lists what lowers a score: details that don't match your official business registration (a different address than the one tied to your EIN, for example) and a small brand footprint. Scores don't change on their own over time. T-Mobile also caps daily messages separately from throughput.21

What it means for a launch, with 50,000 single-segment texts (our arithmetic on the published rates):

4 h 38 min

At 3 MPS, a toll-free number's default at Twilio

1 h 9 min

At 12 MPS, a 10DLC Trust Score under 50

3 min 42 s

At 225 MPS, a 10DLC Trust Score of 75 or more

Registration fees on Twilio, passed through from TCR and carriers at no markup according to Twilio:20

Fee	Amount
Brand registration, Sole Proprietor or Low Volume Standard	$4.50 one-time
Brand registration, Standard (includes secondary vetting)	$46 one-time
Campaign vetting	$15 per campaign
Standard campaign	$10 per month
Low Volume Mixed campaign (up to 2,000 segments a day toward T-Mobile)	$1.50 per month
Sole Proprietor campaign	$2 per month

Carrier fees come on top of every message segment. Twilio passes them through per carrier.20

Quiet hours: who holds the text

Under the FCC rules, telephone solicitations can't go out before 8 a.m. or after 9 p.m. at the recipient's location, and some states are stricter (details in SMS marketing for ecommerce). A tool that enforces this per recipient saves you from scheduling by hand.

KlaviyoFlows wait during quiet hours, by profile location or area code; state-level hours available in the US; can be turned off per message, except mandatory rules such as FranceLeave it on for marketing flows; check the state option
PostscriptCampaigns and automations held until waking hours in the subscriber's time zone, from the phone number; 8 a.m. to 8 p.m. in FL, CT, MD, OK, WA; Texas hours optionalTurn on Texas quiet hours if you text Texas customers
AttentiveLists quiet hours violations among the risks its compliance tools help reduceAsk how hours are set per state and per country
Omnisend, Shopify MessagingNot described on the pages we readAsk the vendor before your first campaign
TwilioNot part of the opt-out feature; you build itSchedule by recipient time zone in your own code

Sources: Klaviyo,3 Postscript,9 Attentive,11 Twilio.22

SMS marketing platforms compared, from their own pages

Every cell below comes from the vendor's own pages, read on October 14, 2026. "Not stated" means we didn't find it on the pages listed in the sources, not that the feature doesn't exist.

Tool	Store integration	Default US number and registration	Two-way	MMS	International
Klaviyo1 2 5 6	Shopify, WooCommerce and others; checkout and order events	Toll-free, verified by Klaviyo in 2 to 5 business days; short codes extra	YesOn numbers that can receive SMS	Priced as its own channel	Sending numbers listed for 23 countries
Postscript7 8	Shopify data for segments; SDK for other shops	Toll-free, verification free; short code $750/month	YesResponse management	Priced per message	Published rates cover US and Canada
Attentive10 11 12	100+ integrations	Not stated	YesReplies and AI or live-agent support	Text plan covers SMS, MMS and RCS	20+ countries
Omnisend13 14 15	Shopify, BigCommerce, WooCommerce, Wix and others	Verified toll-free required for US and Canada; short code on request	Not stated	US and Canada only	About 200 countries for SMS
Shopify Messaging16 18	Shopify only, Basic plan and up	Toll-free, registration in 2 to 5 business days	NoThe toll-free sender can't receive replies	Not stated	US, Canada, UK and listed EU countries; Spain and Austria paused
Twilio19 20	API: any store, built by you	10DLC, toll-free or short code, registered through Twilio	YesInbound messages are priced	$0.022 per outbound MMS in the US	Priced per country

How to read this table

No tool wins every column. A Shopify brand that only needs campaigns can start in Shopify Messaging and move when it needs replies or flows. A brand running flows from checkout, orders and subscriptions should test Klaviyo, Postscript or Omnisend on its own events. Twilio only makes sense with developers who will own consent and quiet hours.

Which tool fits which store

Fits if

Klaviyo: you already send email in Klaviyo, or want one profile for email and SMS on Shopify or WooCommerce, with quiet hours by area code and state.
Postscript: you're on Shopify, want SMS as its own program, and want published per-message prices with a toll-free number verified at no charge.
Attentive: you run a large program across several countries and want compliance tooling, two-way support and a negotiated price.
Omnisend: you want email and SMS on Shopify, WooCommerce, BigCommerce or Wix with prices on the page, and text outside North America.
Shopify Messaging: you send a few campaigns a month from the Shopify admin and don't need customers to reply.
Twilio: you have engineers, a custom checkout or app, and need control over number type, registration and every trigger.

Look elsewhere if

Klaviyo: you need a per-message US rate table before you sign: the pricing page shows a calculator, not a rate list.
Postscript: you sell outside the US and Canada, which its published rates don't cover.
Attentive: you need a price before a sales call.
Omnisend: you sell SHAFT products in the US: those accounts aren't verified.
Shopify Messaging: you want two-way conversations or keyword opt-ins on your US number.
Twilio: nobody on your team will build consent capture, quiet hours and segments.

What SMS costs: pricing models and public prices

Pricing models differ more than prices. Read each page on the day you compare: prices below were read on October 14, 2026.

Tool	Pricing model	Public US prices	Source
Klaviyo	A monthly plan in dollars, spent per message at a rate by channel, country and, in the US and Canada, number type; carrier fees included in the rate	Free plan includes $5 of mobile messages a month; paid rates shown in the pricing calculator	2 4
Postscript	Plan fee plus per-message rate, plus carrier fees	Starter $0/month ($49 minimum spend), SMS $0.009, MMS $0.045; Growth $100/month, SMS $0.008, MMS $0.03; Professional $500/month, SMS $0.007, MMS $0.024; average US carrier fee $0.0033 per SMS	7
Attentive	Usage-based, on list size and messages sent	Not published	10
Omnisend	Plan plus SMS credits; Pro gives bonus credits equal to the monthly bill	Pro shown at $41.30/month billed monthly; US SMS from $0.009 down to $0.007 per message by credit volume	13
Shopify Messaging	Pay per message sent, billed monthly on the Shopify bill	$0.012 per SMS (US), $0.025 (Canada), $0.06 (UK); $2.15/month per toll-free number	17
Twilio	Pay per segment, plus carrier fees, plus 10DLC registration	$0.0083 per outbound SMS on long code, toll-free or short code; $0.022 per outbound MMS; $0.001 per failed message	19 20

Count segments, not messages

Shopify bills a campaign split into 2 messages to 100 recipients as 200 messages.17 Twilio's carrier fees apply to each outbound segment.20 One emoji can push a text from 160 to 70 characters per segment, as explained in SMS marketing for ecommerce. Confirmations, double opt-in messages and HELP replies are billed too on Shopify Messaging.17

Fig. 210,000 single-segment US texts a month, at list price

Tool	Calculation	Monthly total	What you still do yourself
Postscript Starter	10,000 × $0.009 + 10,000 × $0.0033 average carrier fee	About $123	Nothing extra: flows, quiet hours, opt-outs included
Shopify Messaging	10,000 × $0.012 + $2.15 toll-free number	About $122	Accept one-way texts and campaign-only scope
Twilio (10DLC)	10,000 × $0.0083 + $35 to $50 carrier fees + $10 campaign	About $128 to $143, plus $61 once for brand and vetting	Consent capture, quiet hours, segments, flows

Close at the bottom line, far apart on what's included

Our arithmetic on prices read October 14, 2026. Carrier fees on Twilio range from $0.0035 to $0.005 per SMS across AT&T, T-Mobile and Verizon. Klaviyo and Attentive don't publish a US rate list on the pages read; Omnisend credits depend on volume tiers and plan bonuses.

At this volume the bills are close. The difference is what's inside: a tool that holds texts at night and keeps consent records saves the engineering, and the legal risk, of building those yourself. When comparing email and SMS tools together, add the email side of each plan; our guide to triggered email campaigns covers the flows both channels share.

Questions to ask in the demo

Which sending number will I get in the US, and who handles verification or registration? Ask for the expected timeline and what happens if it's rejected.
Which store events trigger texts natively? Checkout started, order paid, fulfilled, refunded, subscription renewal and failed payment. Which ones need a webhook or an app?
Show me one consent record. Time, source, wording shown, phone number, and how it's exported.
How are quiet hours set? By recipient time zone or area code, with state rules, and can a user switch them off?
Can customers reply? Two-way inbox, keyword opt-in, STOP in plain language.
What's my throughput? Messages per second on my number type, and how long a send to my whole list takes.
What delivery reporting do I get? Delivered, failed and filtered, by carrier, with error codes.
How is a message billed? Per segment or per message, carrier fees included or added, MMS rate, and countries.

Ask for answers in writing. The first three can rule a tool out.

Deliverability claims can't be compared across vendors: none publishes a delivery rate measured the same way. Delivery depends mostly on what you control: a verified or registered number, consent you can prove, content that matches the registered use case, and fast opt-out handling. Measure each flow against a holdout group, as described in our SMS marketing guide, and check the SMS marketing glossary entry for the terms.

Where Tagada fits

How Tagada helps

The events your best texts start from

The texts that earn their place follow checkout and subscription events. Tagada runs the checkout, with one-click upsells, order bumps, Apple Pay and Google Pay, and subscriptions with trials, billing cycles, dunning and automatic retries. Payments route across Stripe, Adyen and Tagada's own processor, TagadaPay, with a cascade on decline. It works standalone, on Shopify, on WooCommerce or headless. Pricing is on the pricing page.

Whichever SMS tool you choose, the method holds: confirm it receives the store and payment events your flows need, keeps proof of consent, gets your number approved, and holds texts until morning in your customer's time zone.

Updated on October 14, 2026

Nick Bonnassies

CMO at Tagada

CMO at Tagada. Before Tagada, Nick built direct-to-consumer brands that generated over $115M in sales, raised over $25M in crowdfunding and sold two of them. He also works as a fractional CMO on marketing operations and AI systems.

Frequently asked questions

What is the best SMS marketing platform for ecommerce?

There isn't one for every store. On Shopify, Postscript is built SMS-first, Klaviyo and Omnisend combine SMS with email, and Shopify Messaging sends campaigns from the admin. Attentive sells on quote to larger programs. Twilio suits brands with developers. Choose on store events, consent records, number registration, quiet hours and price per message.

Which platform is best for 10DLC campaign registration and throughput?

Throughput on 10DLC comes from the carriers, not the platform: Twilio lists 12 messages per second across major US networks for a Trust Score under 50 and 225 for a score of 75 or more. Brands can't register with The Campaign Registry directly, so pick a provider that submits brand and campaign, shows your score and passes fees at cost.

Do I need 10DLC registration if I use Klaviyo, Postscript or Shopify Messaging?

Usually not. Their default US numbers are toll-free, which go through toll-free verification instead: 2 to 5 business days at Klaviyo and Shopify Messaging, free at Postscript. Short codes have their own application. 10DLC applies when you send from an ordinary 10-digit number, which is the usual setup when you build on Twilio.

Which SMS marketing tool has the best deliverability?

No vendor publishes delivery rates measured the same way, so the claim can't be compared. Delivery depends mostly on your side: a verified or registered number, consent you can prove, content that fits the registered use case, and clean opt-out handling. Ask each vendor for delivery reports by carrier with error codes, and test with your own list.

How much does SMS marketing cost for an ecommerce store?

At list prices read on October 14, 2026, a US text costs $0.007 to $0.009 per message at Postscript plus carrier fees, $0.012 on Shopify Messaging, and $0.0083 on Twilio plus carrier fees and 10DLC registration. Attentive quotes on request. Emojis split texts into more segments, and longer messages cost more.

Which SMS platform works best for a product launch?

The one whose number can absorb the burst. Twilio gives a toll-free number 3 messages per second by default, so 50,000 single-segment texts take about 4 hours 38 minutes. A 10DLC campaign with a Trust Score of 75 or more gets 225 per second, about 4 minutes. Short codes are built for high volume.

Sources

Checked October 14, 2026

Tagada

The checkout and subscription events behind every text

Funnels, one-click upsells, subscription billing and payment routing, on one customer record.

Start free See pricing

01Create your free account
02Connect your store or build a checkout
03Launch funnels, upsells and subscriptions