Shopify app comparison · updated Aug 26, 2026
Omnisend vs Postscript
Compare Omnisend and Postscript for Shopify using current ratings, review activity, pricing, features, and OngoingAI-observed adoption.
Omnisend
Omnisend Email Marketing & SMS
Run email marketing & SMS campaigns with AI marketing tools. Collect emails with popups & sell more.
- Rating
- 4.80
- Reviews
- 2,955
- Review growth · 30d
- +3 · +0.1%
- Pricing
- Free to install
- Years on Shopify
- 12
- Stores observed
- 4,964
Postscript
Postscript SMS Marketing
Create and execute SMS programs to drive incremental revenue by engaging customers via text message
- Rating
- 4.70
- Reviews
- 1,146
- Review growth · 30d
- +1 · +0.1%
- Pricing
- Free to install
- Years on Shopify
- 8
- Stores observed
- 1,952
Our read
Omnisend has the stronger observed market footprint in OngoingAI's data — it appears on 2.5× more tracked stores and carries 2.6× the App Store review depth. Ratings and recent review growth are much closer.
- Rating
- Omnisend leads slightly4.8 vs 4.7
- Review growth
- Nearly even+0.1% vs +0.1%
- Review depth
- Omnisend2.6× more reviews
- Observed adoption
- Omnisend2.5× more tracked stores
Review trajectory
How each app's Shopify reviews are moving.
Daily App Store review counts since we began tracking — who's gaining reviews fastest, who holds the larger base, and how the race is developing.
Omnisend Email Marketing & SMS leads total reviews; both are growing at a similar pace.
Reviews each app has gained since the start of this tracking window. · Tracking window · Aug 10 – Aug 26, 2026
Head-to-head
The signals, side by side.
Each row reads straight from the live App Store listing and OngoingAI’s census. The Difference column states the gap — not a buyer recommendation.
| Dimension | Omnisend | Postscript | Difference |
|---|---|---|---|
| Rating | 4.80 | 4.70 | Omnisend +0.10 |
| Reviews | 2,955 | 1,146 | Omnisend 2.6× |
| Review growth · 30d | +3 · +0.1% | +1 · +0.1% | Level |
| Listed pricing | Free to install | Free to install | Not directly comparable |
| Years on Shopify | 12 | 8 | Omnisend +4y |
| Stores observed | 4,964 | 1,952 | Omnisend leads |
Which fits your requirements?
Choose by what you actually need.
Choose Omnisend if…
- You need email marketing
- You need email campaigns
- You need sms campaigns
- A higher App Store rating is a priority
Choose Postscript if…
- You need sms notifications
- You need pop-up builder
- You need triggers
Tied to observable requirements only — listed capabilities, ratings, review growth, adoption and price. It doesn’t assert usability or support quality.
Feature differences
What Omnisend and Postscript each do that the other doesn’t.
They cover largely the same ground — 5% of listed capabilities overlap. The decision material is the rest: what each lists that the other doesn’t.
Omnisend only
38
- Email marketing
- Email campaigns
- SMS campaigns
- Push notifications
- Newsletters
- Pop-ups
- Forms
- Landing pages
- Discounts
- Promotions
- Upsell emails
- Cross-sell emails
- Cart emails
- Checkout emails
- Exit intent
- Browse abandonment
- Welcome emails
- Price drop emails
- Back-in-stock emails
- Win-back emails
- Product recommendations
- Drip campaigns
- Subscriptions
- Product reviews
Postscript only
14
- SMS notifications
- Pop-up builder
- Triggers
- A/B testing
- SMS marketing
- Compliance
- Personalized messages
- Scheduled messages
- Two-way messaging
- Segmentation
- Opt-in
- Cart recovery
- Welcome messages
- One-time password (OTP)
2 shared capabilities
- Abandoned cart
- Templates
Observed adoption
Who actually runs each, on real stores.
The stores OngoingAI’s weekly census observes running each app, and the platform each skews toward — observed presence, not vendor-reported install totals.
Omnisend
4,964
stores observed
Skews Shopify · 84%
Postscript
1,952
stores observed
Skews Shopify · 100%
Scope
What this comparison measures.
What it measures
Shopify App Store ratings, review counts and 30-day review growth, listed pricing and capabilities, category data, and OngoingAI-observed storefront adoption for Omnisend and Postscript.
What it doesn’t
Hands-on usability, customer-support quality, deliverability, merchant sentiment from review text, or revenue impact. We draw a sharp line around what we can observe.
Methodology
Where the numbers come from.
Ratings, review counts, pricing, and categories come from the live Shopify App Store listing, refreshed daily. Review growth compares the observed snapshots across the trailing 30-day window. “Stores observed” and the platform split come from OngoingAI’s weekly storefront census — the real stores running each app, not the listing’s claimed totals. Comparison generated Aug 26, 2026.
See who’s switching — as it happens.
Track app adoption on live ecommerce stores. Find merchants running Omnisend or Postscript, follow stack changes, and see when a store installs, removes, or replaces an app.