Is Postscript or SlickText cheaper?

Postscript starts at $0 per month on Starter with a $49 minimum spend, then $100 per month on Growth (free plan available). SlickText starts at $29 per month for 500 credits (14 days trial).

Postscript vs SlickText

An independent, review-free comparison compiled by the SaaSTracker editorial team. Both products are profiled in full, and neither can pay for placement here.

The short answer

Editorial assessment

SlickText compared with Postscript

Postscript is a Shopify-native SMS revenue platform priced around what SMS earns, with far deeper ecommerce data, subscriber acquisition, and attribution than SlickText. SlickText is a general marketing platform with a good Shopify integration bolted to it. If SMS is your primary revenue channel and Shopify is your whole business, Postscript wins. If SMS is one channel among several and you want a monthly plan with no commitment, SlickText is the cheaper and less demanding choice.

Choose Postscript if

Shopify and Shopify Plus merchants doing enough revenue that a dedicated SMS channel earns its keep, particularly stores with repeat purchase behavior, subscriptions on Recharge, or a Klaviyo email program already running that they want SMS to sit alongside rather than replace.

Choose SlickText if

Small and mid-sized US businesses that want real SMS marketing machinery rather than a plain texting inbox, especially Shopify merchants under roughly 50,000 messages a month who want revenue attribution without an ecommerce-platform contract, and any team that sends in lumpy bursts and wants unused credits to roll over.

Side by side

13 attributes

Attribute	Postscript	SlickText
Category	SMS	SMS
Starting price	$0 per month on Starter with a $49 minimum spend, then $100 per month on Growth (free plan available)	$29 per month for 500 credits (14 days trial)
Pricing model	Monthly platform fee that buys a lower per-message rate, plus usage. Carrier pass-through fees apply on top of every message on every tier. No per-seat charge and no credit bundles.	Credit-based monthly subscription across eight published tiers, with one SMS segment costing one credit and MMS costing three credits per segment, plus carrier fees passed through.
Free plan	Starter carries a $0 platform fee but a $49 minimum monthly spend, so it is a low floor rather than a genuinely free plan; it includes campaigns, automations, unlimited segments, a toll-free number, and two opt-in keywords.	No
Free trial	$100 in credit valid for 30 days, applied against message and carrier fees	14 days, all features, no credit card required
Best for	Shopify and Shopify Plus merchants doing enough revenue that a dedicated SMS channel earns its keep, particularly stores with repeat purchase behavior, subscriptions on Recharge, or a Klaviyo email program already running that they want SMS to sit alongside rather than replace.	Small and mid-sized US businesses that want real SMS marketing machinery rather than a plain texting inbox, especially Shopify merchants under roughly 50,000 messages a month who want revenue attribution without an ecommerce-platform contract, and any team that sends in lumpy bursts and wants unused credits to roll over.
Setup time	The app installs and connects to Shopify in under an hour, but you cannot send until carrier registration clears. Toll-free verification typically takes one to three weeks, A2P 10DLC brand and campaign registration usually one to four weeks, and a dedicated short code eight to twelve weeks. Plan on two to four weeks from install to first campaign, and start registration on day one.	An afternoon to send your first campaign, but plan one to two weeks of calendar time before you can send at volume, because A2P 10DLC registration or toll-free verification sits in the middle and neither is under SlickText's control.
Learning curve	Low for campaigns, moderate for automations. The flow builder is approachable but the value sits in the 45 segment filters and 85 trigger filters, and getting real leverage from those means understanding your own Shopify data well enough to know which ones matter. Most merchants get abandoned checkout and welcome flows live in week one and spend a quarter learning the rest.	Low for campaigns and keywords, moderate for workflows and behavioural segmentation. The Shopify event triggers are the part worth reading the documentation for.
Platforms	Web application, Shopify and Shopify Plus app, US and Canadian SMS and MMS delivery, Toll-free, 10DLC, and dedicated short code	Web application, Mobile-responsive web, REST API, Webhooks
Compliance	TCPA-aligned consent capture and record keeping, CTIA messaging principles and best practices, A2P 10DLC brand and campaign registration, Toll-free verification, Carrier quiet hours enforced by recipient time zone	TCPA consent workflows, CTIA messaging guidelines, A2P 10DLC brand and campaign registration, Double opt-in and age verification
Founded	2018	2012
Headquarters	Scottsdale, Arizona, United States	Jamestown, New York, with a second headquarters in Nashville, Tennessee
Ownership	Venture-backed	PE-owned (Iron Creek Partners and Main Street Capital)

Strengths and limitations

Postscript

Strengths

Shopify-native data model means segments and triggers read order history, line items, discounts, and subscription state directly, with no field mapping and no sync lag to debug.
Compliance is a product feature rather than a disclaimer: quiet hours by recipient time zone are the default, an in-house legal team tracks rule changes, and consent records are stored per subscriber with source and timestamp.
Subscriber collection is unusually deep, and the Onsite Opt-in Network genuinely lifts opt-in rates on stores with no existing list because it recognizes shoppers already in Postscript's base.
Pricing tiers buy a lower per-message rate rather than gating features, so the cost model is transparent arithmetic you can run before signing up.

Limitations

Shopify only. There is no path for WooCommerce, BigCommerce, Magento, or headless commerce, and replatforming means replacing Postscript.
No email channel, so you run it beside Klaviyo, Kit, or similar and reconcile attribution across two systems with different windows.
API access is gated to the $500 Professional tier, which pushes developer-led merchants into a price bracket they may not otherwise need.
The $49 minimum spend on Starter means the entry price is not actually zero, and the platform-fee tiers only pay for themselves at meaningful volume.

SlickText

Strengths

Every number type is included in the plan price, including short codes, which is genuinely unusual and saves the businesses that need one four figures a month.
The best rollover terms published in this category: one month on monthly plans, a full year on annual plans.
Real marketing automation rather than a bulk sender, with workflows, behavioural segmentation on Shopify events, A/B testing, and revenue attribution in reporting.
Compliance tooling that goes past the minimum, including double opt-in, age verification, consent records, and AI recognition of opt-out intent phrased in plain English.

Limitations

Carrier pass-through fees are acknowledged but not published as a rate, so your true per-message cost is not knowable from the pricing page alone.
Credit pricing at the entry tiers is expensive per message, and anyone sending above roughly 100,000 a month should be looking at per-message platforms instead.
The inbox is competent but shallower than a dedicated conversational platform: no WhatsApp, no Apple Messages for Business, and less sophisticated agent routing than Heymarket or Textline.
Ecommerce depth stops at Shopify. There is no equivalent native model for WooCommerce, BigCommerce, or a headless stack beyond the API.

Pricing compared

Postscript

Monthly platform fee that buys a lower per-message rate, plus usage. Carrier pass-through fees apply on top of every message on every tier. No per-seat charge and no credit bundles.

Starter$0
Growth$100
Professional$500
EnterpriseCustom

Postscript is priced for stores where SMS is a real revenue line, not an experiment. On Growth at $100 plus roughly $0.013 all-in per SMS segment, a 25,000-message month costs about $425, which is defensible if attribution shows the channel returning multiples of that and indefensible if it does not. The genuinely good part of the structure is that the platform fee buys a rate reduction rather than a feature unlock, so the decision is arithmetic rather than a negotiation. The bad part is API access sitting behind the $500 Professional tier, which is a strange gate for a platform whose whole pitch is data-native integration. Against general-purpose texting tools charging per credit, Postscript looks expensive at low volume and clearly cheaper at high volume, which is exactly what you would expect from a platform built for stores that send a lot.

SlickText

Credit-based monthly subscription across eight published tiers, with one SMS segment costing one credit and MMS costing three credits per segment, plus carrier fees passed through.

Starter$29
Professional$49
Business$79
Growth$129
Scale$169
Enterprise Lite$319
Enterprise$579
Enterprise Plus$939

At the small end SlickText is priced fairly rather than cheaply. Starter at $29 for 500 credits works out to 5.8 cents a credit, which is a lot of money per message compared with a raw API, and the honest answer is that you are not buying messages, you are buying workflows, consent tooling, Shopify attribution, a shared inbox, and a phone number you do not have to fight a carrier for. The included short code alone is worth more than the plan fee for the handful of businesses that need one. The curve improves fast: Enterprise Plus at $939 for 50,000 credits is about 1.9 cents, which is competitive with mid-market SMS platforms and still generous on features. Where it stops making sense is above roughly 100,000 messages a month, where per-message ecommerce platforms and CPaaS providers are simply cheaper. The rollover policy is the quiet differentiator, and for any business with a lumpy sending calendar it is worth more than a small discount from a competitor.

Editorial verdict on each

Postscript

Category Leader

Postscript is the strongest SMS platform in the Shopify ecosystem and it is not close, provided you are actually on Shopify and actually sending enough to justify the structure. The native data model, the depth of the segment and trigger filters, the quality of the subscriber collection tooling, and the fact that quiet hours and consent records are defaults rather than settings all reflect a team that has thought about this problem for eight years. The pricing is honest arithmetic: a platform fee that buys a lower per-message rate, with carrier fees disclosed rather than hidden. The reasons to look elsewhere are structural rather than qualitative. You cannot use it off Shopify, it does not send email, API access sits behind a $500 tier, and the $49 minimum spend means a small store is subsidizing capacity it will never use. If you run a Shopify store where SMS is a revenue line rather than an experiment, start here. If you run anything else, this product is not for you and no amount of feature depth changes that.

Read the full Postscript profile

SlickText

SlickText is the general SMS marketing platform to shortlist when your sending calendar is uneven and your store runs on Shopify. Two things on the pricing page do real work: every number type including short codes is bundled into the plan fee, and unused credits roll over for a month on monthly billing or a full year on annual. Both quietly save more money than the headline price differences between competitors. The product itself is a proper marketing tool, with workflows, behavioural segmentation, A/B testing, attribution, and more consent tooling than the price suggests. The reservations are the unpublished carrier pass-through, a two-way inbox that is competent rather than best in class, and a credit model that stops being competitive above roughly 100,000 messages a month. Below that line, for a business that wants marketing rather than telecom, it is one of the better buys in the category.

Read the full SlickText profile

Postscript profile last reviewed 2026-08-22; SlickText last reviewed 2026-08-22. Pricing is compiled from public sources and can change without notice. See our methodology.