The short answer
The best SMS marketing platform for ecommerce ROI depends on volume. Postscript charges $0.009 per SMS on a $0 platform fee with a $49 monthly minimum, which suits Shopify stores sending thousands of messages. Omnisend starts at $16 a month with SMS from $0.007 a message, and Textedly's Basic plan at $29 a month includes 500 messages.
Key takeaways
- SMS is charged per message on top of the platform fee almost everywhere — the per-message rate decides ROI.
- Postscript charges $0.009 per SMS with a $49 monthly minimum; Omnisend charges from $0.007 per SMS.
- Klaviyo's free plan includes only $5 of mobile messages a month; SMS is an add-on, not in the base plan.
- Attentive and Yotpo publish no SMS price at all, so their cost can only come from a quote.
- Textedly adds an $8 monthly telecom surcharge on every account, on top of the plan price.
How we chose
Seven platforms, one question: what does an ecommerce store actually pay to send SMS, and what does it get back? Platform fees, per-message rates, minimum spends and free plans were all read from each vendor's pricing page on 14 November 2026, and the list is ordered by fit for an ecommerce store measuring return on SMS spend. No hands-on testing was done. The headline finding is that SMS is almost always charged per message on top of the platform fee, so the per-message rate decides ROI, not the headline price. Two prices are missing: Attentive publishes no figures at all, and Yotpo's own pricing page covers Reviews, Loyalty and Discover only — its SMS product is sold through the Shopify app, not priced on yotpo.com.
What 1,000 SMS a month costs on each platform
The only fair comparison is the total: platform fee plus per-message cost plus surcharges. For 1,000 SMS a month, on the figures published on 14 November 2026:
| Platform | Platform fee | Per-message cost | Surcharges | Total for 1,000 SMS |
|---|---|---|---|---|
| Postscript | $0 (Starter) | 1,000 × $0.009 = $9 | Carrier fees ~$4.35 | $49 (minimum spend applies) |
| Omnisend | $16 (Standard) | 1,000 × $0.007 = $7 | None stated | $23 |
| Textedly | $29 (Basic, 500 msgs) | 500 extra × $0.06 = $30 | $8 telecom surcharge | $67 |
| Klaviyo | $20 (Email) | SMS credits, no standalone price shown | None stated | Cannot be calculated |
| Attentive | Custom | Pay per message, no rate published | None stated | Quote only |
| SimpleTexting | $39 estimated | Credits included in plan | ~$0.0025 per message | About $42 |
| Yotpo | Not published | Not published on yotpo.com | None stated | Quote only |
Postscript's $9 of messages falls under its $49 monthly minimum, so the store pays $49. Omnisend is cheapest here at $23, because its $16 plan plus $7 of messages undercuts the others. Textedly's Basic plan includes only 500 messages, so the second 500 cost another $30 plus the $8 surcharge. The lesson is to run this table for your own volume before you choose: at 5,000 messages a month the ranking changes, because Postscript's $0.009 rate and Omnisend's $0.007 rate scale differently against Textedly's fixed allowances.
1. Klaviyo: best for ecommerce stores that want email and SMS in one place
Klaviyo's Email plan costs $20 a month for 500 active profiles, with 5,000 emails a month. The free plan costs $0 for 250 active profiles, 500 emails a month and $5 of mobile messages a month. SMS is an add-on, charged per message on top of the platform fee, and no standalone SMS-plan price is shown on the pricing page. Klaviyo suits a store that already runs email on Klaviyo and wants SMS in the same place, with the same segments and flows. Skip Klaviyo if you want SMS included in the base plan, because it is always an extra charge.
2. Attentive: best for large stores that want SMS-first marketing

Attentive's pricing page says "Custom pricing" and publishes no figures. Its model is usage-based: pay per message, with the price built from message volume, subscriber-list size, channels used and AI tools selected, and explicitly no credit system. Free trials are offered, with no length stated. Attentive suits a large store that treats SMS as its main channel and wants a platform built around it. Skip Attentive if you need a published price before a sales call, because the cost only appears in a quote.
3. Postscript: best for Shopify stores that want pay-per-message SMS
Postscript's Starter plan costs $0 a month with a $49 monthly minimum spend, at $0.009 per SMS and $0.045 per MMS plus carrier fees (average US carrier fee $0.00435 per SMS). Growth costs $100 a month at $0.008 per SMS, Professional $500 a month at $0.007, and Enterprise is quoted. There is no contract, and a $100 credit covers the first 30 days. Postscript suits a Shopify store that sends thousands of messages and wants to pay after sending, with no prepaid balances or expiring credits. Skip Postscript if your monthly SMS spend is under the $49 minimum, because the minimum is the real price at low volume.
4. Omnisend: best for small stores that want email, SMS and push together
Omnisend's Standard plan starts at $16 a month billed monthly, and Pro costs $59 a month. The free plan costs $0 with 500 emails a month, 250 contacts and 500 web-push notifications, but SMS is not included in Free. SMS is charged from $0.007 a message on top of the plan, as global SMS credits. Omnisend suits a small store that wants email, SMS and push in one tool without paying enterprise prices. Skip Omnisend if you need SMS on the free plan, because the free tier does not include it.
5. Yotpo: best for stores already using Yotpo reviews and loyalty
Yotpo's own pricing page covers Reviews and UGC, Loyalty and Referrals, and Discover only — no SMS product and no SMS price appears anywhere on it. Its SMS and Email module is sold through the Shopify app rather than priced on yotpo.com. Yotpo suits a store already using its reviews and loyalty products that wants SMS from the same vendor. Skip Yotpo if you want SMS pricing without going through the Shopify app, because yotpo.com does not publish it.
6. SimpleTexting: best for small businesses that want simple text campaigns
SimpleTexting's pricing is a volume slider rather than named plans, and the page shows $39 a month estimated at its default position, with 20% off on annual billing. Add-ons cost $10 a month per additional number, $20 a month per additional user, and $4 one-time carrier registration, with carrier fees of about $0.0025 a message. Incoming SMS is free, one SMS costs one credit, MMS costs three, and unused credits roll over to the end of the following month on monthly plans. SimpleTexting suits a small business that wants simple campaigns without learning a complex platform. Skip SimpleTexting if you need a named plan with a fixed message allowance, because the slider is the only pricing it shows.
7. Textedly: best for businesses that want a fixed monthly message allowance
Textedly's Basic plan costs $29 a month for 500 messages on monthly billing, or 600 a month on annual billing. Higher tiers run from Bronze at $49 to Legend at $5,520 a month, with the same features on every plan and only the volume changing. Every account also pays an $8 monthly telecom surcharge, and extra texts cost $30 per 500. A free 14-day trial includes 50 text messages and one custom keyword, with no credit card required. Textedly suits a business that wants a fixed monthly allowance and a predictable bill. Skip Textedly if you want to avoid the $8 monthly telecom surcharge, because it applies to every account.
Mistakes to avoid with SMS marketing platforms
- Comparing headline prices instead of totals. A $0 platform fee with a $49 minimum is not free. Add the platform fee, the per-message rate and the surcharges before you compare.
- Forgetting carrier fees. Postscript, SimpleTexting and others add carrier fees on top of the per-message rate. They are small per message and large at volume.
- Sending SMS without consent. SMS marketing needs the customer's opt-in, and the rules are stricter than email. A platform will not save a list built without permission.
- Treating SMS like email. A text message is short, personal and immediate. Long promotional copy that works in email fails in SMS.
- Ignoring the minimum. Postscript's $49 minimum and Textedly's $8 surcharge change the maths at low volume. Check the minimums before you sign up.
- Measuring opens, not revenue. SMS open rates are high and tell you little. Track revenue per campaign against its full cost, including the platform fee.
Six SMS marketing terms worth knowing
- Per-message rate: the price charged for each SMS sent, on top of any platform fee.
- Carrier fee: a small charge from the phone network for delivering the message, often added to the per-message rate.
- Minimum spend: the lowest monthly amount a platform charges, whatever the usage.
- Telecom surcharge: a fixed monthly fee added to cover carrier and compliance costs.
- Opt-in: the customer's permission to receive marketing messages, required for SMS.
- MMS: a multimedia message with images or longer text, charged more than a plain SMS.
For the email side of the same job, see the best email marketing platforms for creators comparison and the email marketing funnel guide. The best mass email service post covers high-volume sending, and Adziq's email service page covers campaigns if you want them run for you.
SMS Marketing Platforms for Ecommerce ROI at a glance
| Pick | Best for | Starting price | Free plan |
|---|---|---|---|
| Klaviyo | Ecommerce stores that want email and SMS in one place | $20 per month, Email plan (500 active profiles, monthly billing) | Yes, Free with 250 active profiles and $5 of mobile messages a month |
| Attentive | Large stores that want SMS-first marketing | Pricing on request — custom pricing, pay per message | No free plan; free trial offered, length not stated |
| Postscript | Shopify stores that want pay-per-message SMS | $0 per month, Starter, with a $49 monthly minimum spend; $0.009 per SMS | No free plan; $100 credit for the first 30 days |
| Omnisend | Small stores that want email, SMS and push together | From $16 per month, Standard, billed monthly | Yes, Free with 500 emails a month and 250 contacts; SMS not included |
| Yotpo | Stores already using Yotpo reviews and loyalty | Pricing on request — no SMS price on yotpo.com | Free plans exist for Reviews and Loyalty; no free SMS tier stated |
| SimpleTexting | Small businesses that want simple text campaigns | $39 per month estimated, volume slider, monthly billing | No free plan; no trial stated on the pricing page |
| Textedly | Businesses that want a fixed monthly message allowance | $29 per month, Basic (500 messages a month, monthly billing) | No free plan; free 14-day trial, 50 text messages, no credit card |
Common questions
How much does SMS marketing cost for an ecommerce store?
Two costs: the platform fee and the per-message rate. Platform fees here run from $0 (Postscript Starter) to $39 a month (SimpleTexting), and per-message rates run from $0.007 (Omnisend) to $0.009 (Postscript). A store sending 1,000 SMS a month pays roughly $23 to $49 a month in total, depending on the tool.
Is SMS marketing worth it for ecommerce?
It can be, because text messages are opened far more often than emails. The ROI test is simple: track revenue from SMS campaigns against the platform fee plus per-message cost. If a campaign's revenue does not cover its cost after two or three sends, the list, the offer or the timing is wrong — not necessarily the channel.
Does Klaviyo include SMS in its plans?
No. SMS is an add-on on Klaviyo's Email plan, charged per message on top of the $20 a month platform fee. The free plan includes only $5 of mobile messages a month.
What is the cheapest SMS platform for a small store?
For low volume, Omnisend's free plan costs $0 but does not include SMS, so the cheapest way to actually send texts is Postscript's $49 monthly minimum or Textedly's $29 Basic plan. Compare the total — platform fee plus per-message cost — not the headline price.
Do SMS platforms charge carrier fees?
Yes, usually. Postscript adds average US carrier fees of $0.00435 per SMS on top of its $0.009 rate, SimpleTexting charges about $0.0025 per message, and Textedly adds an $8 monthly telecom surcharge. Read the pricing page for the full cost before you compare.
Sources
- Klaviyo pricing
- Attentive pricing
- Postscript pricing
- Omnisend pricing
- Yotpo pricing
- SimpleTexting pricing
- Textedly pricing
Adziq sells marketing services and does not accept payment for placement in its articles. See our editorial policy.
