Postscript shows four SMS plans: Starter, Growth, Professional and Enterprise. Starter, Growth and Professional show a monthly fee plus per-message rates, and Enterprise says Contact us.
Every Postscript bill has at least two parts: the monthly plan fee, and what you send. Each plan charges per message, and carrier fees sit on a line of their own. Reading only the plan fee gives you half the picture.
Postscript is an SMS and RCS marketing platform, with email, for ecommerce brands, covering campaigns, automations, segmentation and subscriber acquisition tools. Here's what its pricing page shows as of Nov 2026.
Postscript SMS plans on one page
| Plan | Price as shown | Billing basis | Main limit | Who it suits |
|---|---|---|---|---|
| Starter | $0/mo. with a $49 monthly minimum spend; $0.009/SMS, $0.045/MMS + carrier fees (as of Nov 2026) | Per month plus per-message rates | $49 monthly minimum spend; 2 opt-in Keywords | Brands getting started with SMS |
| Growth | $100/mo.; $0.008/SMS, $0.03/MMS + carrier fees (as of Nov 2026) | Per month plus per-message rates | Unlimited opt-in Keywords | Brands building their SMS program |
| Professional | $500/mo.; $0.007/SMS, $0.024/MMS + carrier fees (as of Nov 2026) | Per month plus per-message rates | Lowest listed per-message rates | Brands scaling up SMS as a top revenue channel |
| Enterprise | Contact us (custom pricing) | Custom terms | Set per account | Brands ready to make SMS their main revenue channel, in the page's words |
Upgrading across the Postscript tiers: what each step adds
The per-SMS rate falls as you move up: $0.009 on Starter, $0.008 on Growth and $0.007 on Professional. Features change at set points.
- Starter: campaigns and automations, unlimited segments, a dedicated toll-free number, subscriber acquisition tools with 2 opt-in Keywords and a branded short link subdomain.
- Growth: unlimited opt-in Keywords, plus live chat and email support.
- Professional: Enhanced Analytics, priority live chat and email support, API access for custom integrations, and 'Powered by Postscript' removed from opt-in.
- Enterprise: a dedicated Customer Success Manager, personalised messages with custom product recommendations, Data Warehouse Push and the option to add RCS.
For a wider look at how other SMS tools set their tiers, see our guide to SMS marketing software.
The small print: minimum spend and carrier fees
Starter shows $0/mo. on the card, but it carries a $49 monthly minimum spend. So a free-looking plan still has a floor, and it's one you'll meet even in a quiet month. On every plan, carrier fees are passed through on their own line, and the page lists average US figures for them: $0.00330 per SMS, $0.00799 per MMS, $0.0047 for Text RCS and $0.0087 for Media RCS.
The rates listed apply to the US 50 states and Canada only. On the plus side, the page states there are no prepaid balances, expiring credits, overages or auto-upgrades, so you aren't moved up a plan without choosing to be.
The separate AI plan
The AI products, Brand Center, Infinity Testing and Shopper, aren't part of the four SMS tiers, and that's easy to overlook. They sit in a separate Postscript AI Plan at $699/mo., with per message rates from $0.003 to $0.30 depending on product and message type. The page also mentions Postscript Plus, a managed marketing service with SMS strategists, and Fondue CashBack, without figures here.
Advice on reading the Postscript pricing page
Here's what the page shows. The tiers are separated by the monthly fee, by the per-message rate (which falls from $0.009 to $0.007 per SMS across the first three tiers), by opt-in Keyword limits on Starter and by support, analytics and API access higher up. Carrier fees are charged on top on every plan, Starter has a $49 monthly minimum spend, Enterprise needs a conversation, and the AI products are a separate plan, as of Nov 2026.
Before you open the page, it helps to know how many messages you send in a typical month, split between SMS and MMS, since that drives most of the bill. If texts are mainly for cart recovery, our guide to abandoned cart software covers that job from a wider angle.
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The free trial credit
There's no free plan. The free trial gives a credit equal to $100 that's usable in the first 30 days for message and carrier fees. If you're comparing Postscript with all-in-one email and SMS tools, our list of ecommerce email and SMS platforms sets out the other options.
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Frequently asked questions
Is Postscript free?
No, it isn't. Starter shows $0/mo. but carries a $49 monthly minimum spend, as of Nov 2026, and every plan charges per message plus carrier fees.
What does Postscript charge per SMS?
The page lists $0.009 per SMS on Starter, $0.008 on Growth and $0.007 on Professional, plus carrier fees on their own line. Rates apply to the US and Canada only.
Are carrier fees included in the Postscript rates?
No. Carrier fees pass through on their own line. The page lists average US figures such as $0.00330 per SMS and $0.00799 per MMS.
Is the Postscript AI included in the SMS plans?
No. Brand Center, Infinity Testing and Shopper are part of a separate Postscript AI Plan at $699/mo., with its own per message rates.
Does Postscript have a free trial?
Yes. The free trial gives a credit equal to $100 that you can use in the first 30 days for message and carrier fees.
