Softwr

Marketing · head to head

Postscript vs VWO

Postscript logo

Postscript

Marketing

SMS marketing built for Shopify merchants, with carrier fees billed on top of message rates

From
$49/month
Rated
-
Full reviewWebsite
VWO logo

VWO

Marketing

Experience Optimization Platform

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only VWO has a free tier, so it costs nothing to try first.
  • Each has a real cost: Postscript carrier pass-through fees are billed on top of the per-message rate, roughly $0.00418 per SMS and $0.00841 per MMS in the United States, and are routinely missing from the cost comparisons buyers build.; VWO growth plan restricted to 1 workspace and 0 custom attributes
  • They diverge on capability: Postscript covers Shopify segmentation, VWO covers A/B testing.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Postscript and VWO actually diverge.

Attributes where Postscript and VWO differ
AttributePostscriptVWO
Starting price$49/monthFree
Pricing modelPer month plus per message sentusage-based
Free tierNoYes
PlatformsWeb, iOSWeb, iOS, Android, Server-side
FoundedUnknown2007

Identical on both: user rating (Not yet rated), category (Marketing).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Postscript

  • Shopify segmentation
  • Automated flows
  • Subscriber acquisition
  • Two-way conversations
  • MMS campaigns
  • Revenue attribution
  • Headless SDK
  • Usage-based tiers

Only in VWO

  • A/B testing
  • Multivariate testing
  • Heatmaps
  • Session recordings
  • Analytics
  • Google Analytics
  • Slack
  • SSL encryption

What people use each for

The jobs each tool is most often brought in to do.

Postscript

  • A Shopify direct-to-consumer brand that wants abandoned cart recovery by text rather than another email in an ignored inboxnot VWO
  • A brand running a product drop where a timed broadcast to an opted-in list is the whole launch mechanismnot VWO
  • A merchant segmenting by past purchase and variant to send replenishment reminders at the right intervalnot VWO
  • A store on headless Shopify or a custom stack that still wants SMS built on order data through the SDKnot VWO

VWO

  • A/B testing and multivariate testingnot Postscript
  • Conversion rate optimisationnot Postscript
  • Behavioural analytics and session recordingsnot Postscript
  • Feature experimentation and progressive rolloutsnot Postscript

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Postscript

  • Carrier pass-through fees are billed on top of the per-message rate, roughly $0.00418 per SMS and $0.00841 per MMS in the United States, and are routinely missing from the cost comparisons buyers build.
  • The cheapest per-message rates require the $500 a month plan, so a small sender pays more than double the headline low rate per text.
  • The $0 Starter plan carries a $49 minimum monthly spend, so it is not a free tier and quiet months still generate a bill.
  • US SMS marketing carries real legal exposure under consent, quiet hours and carrier registration rules, and the compliance obligation sits with the merchant, not the platform.
  • It is SMS and MMS only, so email, push and on-site messaging live in a separate tool and audience suppression between the two has to be managed across systems.

VWO

  • Growth plan restricted to 1 workspace and 0 custom attributes
  • Single Sign-On (SSO) and API access limited to Enterprise tier only
  • Growth plan offers only 8-hour first response time for support

Pricing, plan by plan

Postscript

$49/month
  • Starter$49/month
    • $0 base fee but a $49 minimum monthly spend
    • SMS at $0.015 and MMS at $0.045 per message
    • Campaigns, automations, acquisition tools and analytics
  • Growth$100/month
    • Lower per-message rates than Starter
    • Full campaign and automation feature set
    • No contract required
  • Professional$500/month
    • Rates falling towards $0.007 SMS and $0.024 MMS
    • Suited to high-volume senders
    • Upgrade or downgrade at any time
  • Enterprise$undefined/month
    • Custom pricing on a contract
    • Negotiated message rates and support terms

VWO

Free

No published plan breakdown. See the VWO review.

Which should you pick?

Choose Postscript if

  • You need shopify segmentation.
  • You work on Web, iOS.
  • You also want automated flows.
Postscript review

Choose VWO if

  • You need a/b testing.
  • You want to start without paying.
  • You work on Web, iOS, Android, Server-side.
  • You also want multivariate testing.
VWO review

Questions people ask

Is Postscript or VWO better?
Neither clearly leads. Postscript starts at $49/month and VWO at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Postscript or VWO?
VWO has a free tier; the other does not. Paid plans start at $49/month for Postscript and Free for VWO.
Does Postscript or VWO run on more platforms?
Postscript runs on Web, iOS. VWO runs on Web, iOS, Android, Server-side.
Can I use VWO for free?
Yes. VWO has a free tier, so you can try it without paying. Postscript starts at $49/month.
What is Postscript best used for?
Postscript is most often used for a shopify direct-to-consumer brand that wants abandoned cart recovery by text rather than another email in an ignored inbox, a brand running a product drop where a timed broadcast to an opted-in list is the whole launch mechanism, a merchant segmenting by past purchase and variant to send replenishment reminders at the right interval, a store on headless shopify or a custom stack that still wants sms built on order data through the sdk. Of those, a shopify direct-to-consumer brand that wants abandoned cart recovery by text rather than another email in an ignored inbox and a brand running a product drop where a timed broadcast to an opted-in list is the whole launch mechanism are not what VWO is typically brought in for.
What can Postscript do that VWO cannot?
Postscript covers Shopify segmentation, Automated flows, Subscriber acquisition, Two-way conversations. VWO covers A/B testing, Multivariate testing, Heatmaps, Session recordings.

Answered from the vendors’ own pages

Postscript: Is Postscript only for Shopify?

It is built for Shopify and that is where its segmentation advantage lies, but headless and non-Shopify stores are supported through an SDK with more setup work.

VWO: Is there a free trial available?

Free for 30 days. No credit card required to start the trial.

Source
Postscript: What is the real cost per text?

The plan rate plus carrier fees. On Starter that is about $0.015 plus roughly $0.00418 in US carrier fees per SMS, so budget close to two cents a message before discounts.

VWO: Are there limits on users or metrics?

Run unlimited optimization at scale with no limit on variations, account users, metrics, session recordings, or integrations.

Source
Postscript: Is the Starter plan free?

No. The base fee is $0 but there is a $49 minimum monthly spend, so it functions as a $49 floor.

Postscript: Do I need a contract?

No. Contracts are offered but not required, and plans can be moved up or down at any time under usage-based billing.

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