Postscript review
Postscript is an SMS marketing platform for Shopify stores, built around campaigns, keywords and subscribers. The Growth plan costs $100 a month plus $0.008 per SMS, read September 9, 2026. Every plan includes a 30-day free trial with a $100 credit toward message and carrier fees, read September 22, 2026. We score Postscript 5.08 out of 10.
Alain Grossbard OAM, with Justin Grossbard Updated How we rate Reader supported, we may earn a commission Reader supported. We may earn a commission when you sign up through a link on this page, and it never changes a score. How we make money.
Postscript cost at your volume
$52.30 a month on Starter
- Starter monthly minimum spend$49
- Carrier fees, published average$3.30
The cheapest published way to send that many SMS in a month on Postscript: the smallest plan whose credits cover it, or a smaller plan plus its overage rate, plus any fixed monthly fee, from the plans read 9 September 2026. The same function prices Postscript on the SMS marketing page.
Postscript scores
| Value for money | 4 | |
|---|---|---|
| Features | 8 | |
| Reliability | 3.5 | |
| Reputation | 6 | |
| Compliance | 4 | |
| Customer service | 5 |
Six criteria, equally weighted, each scored out of 10 from Postscript's own published pages (how we rate).
Postscript US rates
| As published | Price | How it compares |
|---|---|---|
| Starter, $0/mo, $49 monthly minimum spend | 0.90c per SMS beyond the plan | Lower than 19 of 32 other providers' lowest US rates, level with 1 |
| Growth, $100/mo | 0.80c per SMS beyond the plan | Lower than 23 of 32 other providers' lowest US rates, level with 1 |
| Professional, $500/mo | 0.70c per SMS beyond the plan | Lower than 27 of 32 other providers' lowest US rates, level with 1 |
| Toll-free number rental | Free. Every merchant is assigned a dedicated toll-free number, and Postscript verifies it at no charge. | Billed on top of message charges |
Read from Postscript's own US pricing page on 9 September 2026. By monthly plan. Each row is read against the lowest published US rate of every other provider we price. Source.
Postscript fees, trial and support
| What | Postscript | Source |
|---|---|---|
| MMS rate | $0.045 per MMS on Starter, $0.03 on Growth and $0.024 on Professional, plus carrier fees. MMS can be sent only in the US, Canada and Puerto Rico. | Read Source 1 Source 2 |
| 10DLC registration fees | Not published | Read Source 1 Source 2 Source 3 |
| Toll-free verification | Postscript files toll-free verification for the merchant, free, taking roughly 3 to 10 business days. An unverified toll-free number cannot send. | Read Source 1 |
| Carrier fees | Billed on top of every plan rate. The pricing page gives an average US carrier fee of $0.00330 per SMS and $0.00799 per MMS ($0.0047 text RCS, $0.0087 media RCS). A per carrier fee table is in the help center. Verizon's short code and toll-free SMS fee rises from $0.0045 to $0.0050 on October 1, 2026. | Read Source 1 Source 2 |
| Free trial | 30-day free trial on every plan, with a $100 credit toward message and carrier fees incurred in the first 30 days. | Read Source 1 |
| Minimum plan or spend | Starter has no plan fee but a $49 monthly minimum spend. Growth is $100 a month and Professional $500 a month; Enterprise is quoted. No setup fee is published. | Read Source 1 |
| Credit expiry | Not published | Read Source 1 |
| API and SDKs | Postscript's pricing page lists API access for custom integrations on Professional ($500 a month); its developer docs say custom API access has been limited to Enterprise plans since April 2022. The public API reference has six endpoints and none sends a message. A JavaScript SDK is offered for headless and non-Shopify shops. | Read Source 1 Source 2 Source 3 |
| Web app | true. Web dashboard with a drag and drop Flow Builder for campaigns and automations, scheduling, automation templates, replies to subscriber texts in the Responses tab, and reports on subscribers, revenue and messaging. | Read Source 1 Source 2 |
| Email to SMS | Not published | Read Source 1 Source 2 Source 3 Source 4 |
| Integrations named | Shopify, Shopify Plus, Recharge, Carthook, Gorgias, Zendesk, Slack, Klaviyo, Yotpo, Octane AI, Social Snowball, AfterShip, Growave, Zapier and more. | Read Source 1 |
| Support channels | Live chat and email (support@postscript.io) from the Growth plan up; Starter gets help center access only. Professional adds priority chat and email, Enterprise an onboarding specialist and Customer Success Manager. Developer email for API questions. No US support phone is published. | Read Source 1 Source 2 |
| Support hours | Live chat Monday to Friday, 6 AM to 5 PM Pacific (9 AM to 8 PM Eastern). No weekend or 24/7 hours are published. | Read Source 1 Source 2 |
| SOC 2 | Not published | Read Source 1 Source 2 Source 3 Source 4 |
| ISO 27001 | Not published | Read Source 1 Source 2 Source 3 |
| HIPAA | Not for health data. The Terms of Service bar HIPAA protected health information from the platform. | Read Source 1 |
| Opt-out handling (TCPA) | Features are built to TCPA and carrier rules: compliant opt-in language, automated double opt-in, Quiet Hours, and in-thread age verification for restricted categories (Professional and Enterprise). | Read Source 1 Source 2 |
| 10DLC registration | Not published | Read Source 1 Source 2 Source 3 Source 4 Source 5 |
| Founded | Not published | Read Source 1 Source 2 Source 3 Source 4 |
| Head office | Scottsdale, Arizona: 3370 North Hayden Road, Suite 123-251, the address the privacy policy gives for its legal department. No separate headquarters address is published. | Read Source 1 |
| Ownership | Not published | Read Source 1 Source 2 Source 3 |
| US contracting entity | Stodge Inc., doing business as Postscript. | Read Source 1 |
| Coverage | Plan rates cover the US 50 states and Canada. Other countries are $0.25 per SMS on Starter, Growth and Professional. MMS is limited to the US, Canada and Puerto Rico. | Read Source 1 Source 2 |
| Uptime or SLA | No contractual SLA; the Terms of Service disclaim all warranties. Postscript's customer service page claims "over 99.99% uptime", and its status page showed 100% uptime over the past 60 days on September 9, 2026. | Read Source 1 Source 2 Source 3 |
| Messaging partner | Twilio is the named upstream messaging partner; Postscript says it has Twilio-preferred status. | Read Source 1 |
Not published means Postscript's own pages were checked on that day and state no figure. Nothing here is carried over from the earlier version of this review.
When Postscript fits
You run a Shopify or Shopify Plus store and want campaigns and automations from a web dashboard; Postscript lists its Flow Builder, scheduling and automation templates as of September 9, 2026. Your sending stays in the US and Canada, where plan rates apply. You want TCPA compliance features such as automated double opt-in and Quiet Hours, listed September 9, 2026. A 30-day free trial with a $100 credit, read September 22, 2026, lets you test before paying. Postscript publishes a US short code price of $750 a month, read September 28, 2026, so you can weigh what a US short code costs before upgrading.
When to look elsewhere
You need health data on the platform; the Terms of Service bar HIPAA protected health information (September 9, 2026). You want a contractual SLA; the Terms disclaim all warranties. You rely on chat support on the Starter plan, which gets help center access only (September 22, 2026). You need published fees for 10DLC, long code rental or credit expiry; Postscript does not publish any of these as of September 9, 2026.
Postscript compared
Postscript is ranked against the rest of its category: where Postscript ranks among the best SMS marketing platforms in the USA.
Postscript questions
How much does Postscript cost per month?
Postscript cost per month runs $0 on Starter, plus $0.009 per SMS and a $49 monthly minimum spend, read September 9, 2026. Growth is $100 a month plus $0.008 per SMS. Carrier fees bill on top.
Is there a Postscript free trial?
Postscript offers a 30-day free trial on every plan, with a $100 credit toward message and carrier fees incurred in the first 30 days, read September 22, 2026 from its own pages.
What is Postscript SMS marketing?
Postscript SMS marketing is a platform for Shopify stores to run campaigns, keywords and subscriber opt-in by text. It works through a web dashboard with a drag and drop Flow Builder, per its site on September 9, 2026.