Postscript Review (2026)The $0 Plan Has a $49 Floor

Pricing (2026)

✓ Pricing re-verified 19 Sep 2026

Starter is shown as $0 a month with a $49 monthly minimum spend, at $0.015 then $0.009 per SMS and $0.045 per MMS, plus carrier fees. Growth is $100 a month at $0.01 then $0.008 per SMS and $0.03 per MMS. Professional is $500 a month at $0.007 per SMS and $0.024 per MMS. Enterprise is contact-sales. Carrier fees are asterisked on every tier and are quantified in the footnote below the feature list: average US carrier fees of $0.00418 per SMS and $0.00841 per MMS, with the listed rates covering the US 50 states and Canada only.

The free trial is a credit equal to $100 against message and carrier fees during your first 30 days; exhaust it and you are billed at the Free package rate unless you select another package. Phone numbers are priced outside the tiers: a dedicated toll-free number is assigned and verified free of charge at install, while a dedicated short code costs $750 a month levied by the carriers and passed on without markup. No contract is required. Plans change — always verify the live price on their site.

Category context: SEO & Marketing. Across the 10 tools in this category that we researched with a public US-dollar price, the median entry price is about $25 a month (lowest paid plan as listed, per seat where the vendor prices per seat). Postscript’s entry price of $49 a month sits above that median. Compare pricing conditions in the Software Cost Atlas →

What the pricing page doesn’t say

The catch

Read the tiers as what they are: a platform fee plus a per-message rate plus carrier fees. That third line is easy to miss because it sits in a footnote rather than on the tier cards, and it is not small: the page puts the average US carrier fee at $0.00418 an SMS and $0.00841 an MMS, so against the $0.009 volume rate on Starter it adds close to half again.

Before you compare this with anything, work out your monthly message volume and multiply it out on all three published tiers: Growth costs $100 more than Starter but saves a fifth of a cent per message, so it pays back somewhere around 50,000 messages a month.

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What Postscript does

SMS marketing for Shopify stores: campaigns, automations and opt-in tools.

What buyers report about Postscript

Hands-on: not tested by usReported by buyers: the Shopify App Store, G2, Capterra and Software Advice, read August 2026

Themes from the buyer-review sites listed at the foot of this page, read in August 2026. We have not run Postscript ourselves, so this is other buyers' experience rather than ours. We summarise it here because the complaints are usually the part a vendor page leaves out.

The $0 plan has a $49 floor

Treat that $0 headline as a floor, not a free plan: Starter carries a $49 minimum spend whether you send one message or none. Growth is $100 a month, Professional $500, Enterprise on quote. Read every tier as three lines: a platform fee, a per-message rate, and carrier fees the mobile networks levy per message. Starter is $0.015 then $0.009 an SMS and $0.045 an MMS; Growth $0.01 then $0.008 and $0.03; Professional $0.007 and $0.024 (read 30 August 2026 on their own pricing page from a US exit).

The third line has a figure too, but in a footnote rather than on the cards: US carrier fees average $0.00418 an SMS and $0.00841 an MMS, close to half again on Starter's volume rate. That footnote also bounds the rates to the US 50 states and Canada. The tier choice turns on something the page never publishes: where the introductory rate ends and the volume rate begins. Growth's extra $100 pays back somewhere between 20,000 and 100,000 SMS a month depending on that split, but at roughly 6,700 MMS, because MMS drops a cent and a half. Ask where the rate steps down; that one answer settles it.

How to actually use Postscript

Ask where the rate steps down before you model anything. It is the one number the page does not give, and without it you cannot tell which tier is cheaper: Starter runs $0.015 then $0.009 an SMS, Growth $0.01 then $0.008, and the saving depends on how much of your volume falls in each band. Then count your monthly volume and split it by message type: SMS and MMS answer differently.

On text alone the $100 Growth fee pays back between roughly 20,000 and 100,000 messages a month; on picture messages at about 6,700, because MMS drops from $0.045 to $0.03. Budget the floor even in a quiet month: Starter's $0 headline carries a $49 minimum spend, so a month where you send nothing still costs $49. Price a seasonal programme across the whole year, not its peak. Use the free trial on one real campaign and read the invoice, not the dashboard summary.

The platform fee, the per-message rate and the carrier fees appear separately there — the only place you see all three against your own volume.

Distilled from Postscript pricing page (postscript.io/pricing), read 30 August 2026 from a US exit — the four tiers, the $49 minimum spend on Starter, the per-message SMS and MMS rates, and the footnote below the feature list that quantifies average US carrier fees and limits the listed rates to the US 50 states and Canada. Postscript homepage https://postscript.io/ (read 2026-11-01 — SMS, RCS and email named as channels; source of the channels buyer question).

The natural comparison is Attentive or Klaviyo SMS — the direct SMS peers for ecommerce — compare total cost at your real monthly send volume, including carrier fees, not the platform fee.

Visit Postscript →

Frequently asked questions

The entry plan says $0 a month. Is it free?

No, and the $0 is the least informative number on the page. Read on postscript.io/pricing on 19 September 2026: the Starter package carries a $49 monthly minimum spend, so $49 is your floor in any month, including one in which you send nothing. On top of that floor sits a per-message rate — $0.015 and then $0.009 per SMS, $0.045 per MMS on Starter — and on top of that sit carrier fees, which are asterisked on every tier card and priced only in the footnote below the feature list: an average of $0.00418 per SMS and $0.00841 per MMS. Against Starter's $0.009 volume rate, that footnote adds close to half again. Read the tiers as three lines, then, not one: platform fee, message rate, carrier fee.

What does the free trial actually give me?

A credit, not a period of free sending. Postscript's own FAQ, read 19 September 2026, puts it at a credit equal to $100 to use during your first 30 days, applied toward message and carrier fees. Spend that credit before the 30 days are up — or reach the end of the 30 days — and you are charged at the Free package rate for anything further, unless you have selected another package. What you can do during the trial is otherwise the whole product: two unique keywords, automations, campaigns, segments, integrations and replying to customers. So budget it by your own volume rather than by the calendar. At Starter's published $0.009 volume rate plus the $0.00418 average carrier fee, $100 covers on the order of 7,500 texts — fewer at the $0.015 rate.

Do I need a dedicated short code, and what does the phone number cost?

Only at volume, and the two options are priced very differently. Postscript's FAQ, read 19 September 2026, says every merchant is assigned a dedicated toll-free number when the app is installed and that Postscript runs the verification for you free of charge — that is the default and it is included. A dedicated short code is what they recommend instead for high subscriber volume or fast, consistent delivery speeds, and it costs $750 a month through the carriers, which Postscript passes on at cost without markup. That is fifteen times the Starter minimum spend for the phone number alone, so it belongs in a plan for later rather than in your first month. One boundary to check before you compare quotes: every rate on this page covers the US 50 states and Canada only, and anything beyond that runs on a separate international rate card.

Is Postscript still SMS-only?

Not by its own description. The postscript.io homepage (read 1 November 2026) presents it as agentic retention marketing across SMS, RCS and email. The pricing figures on this page are for SMS and MMS; that homepage gives no prices, plan access or migration terms for RCS or email, so treat those as not confirmed until you see them on the pricing page or in a quote.

Is this a hands-on review of Postscript?

This is a researched assessment, not a hands-on test — where we've used a tool ourselves, we say so explicitly. We name what each tool is good and bad at, and we have no affiliate relationship with Postscript — we earn nothing whether you sign up or not.

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