OneSignal vs Postscript: Complete Comparison (2026)
An in-depth comparison of OneSignal and Postscript to help you choose the right tool for your business.
Last updated: November 2026
OneSignal
7.1/10
OneSignal is a customer messaging platform for sending mobile push, web push, in-app messages, email and SMS to app and website users.
Postscript
6.3/10
Postscript is an SMS, MMS and RCS marketing platform built for Shopify stores, with automations, segmentation, subscriber growth tools and optional AI features.
Feature-by-Feature Comparison
| Feature | | |
|---|---|---|
| Scores | ||
| Overall Rating | 7.1/10 | 6.3/10 |
| Analytics | 6/10 | 7/10 |
| Cost | 7/10 | 5/10 |
| Customization | 6/10 | 6/10 |
| Ease of Use | 8/10 | 8/10 |
| Integration | 8/10 | 6/10 |
| Scalability | 8/10 | 7/10 |
| Security | 7/10 | 6/10 |
| Support | 6/10 | 6/10 |
| Pricing | ||
| Free plan | Yes | No |
| Cheapest paid plan | $19/mo Growth | $49/mo Starter |
| Estimated cost for 10 users | Free Free | $49/mo Starter |
| Features | ||
| A/B Testing | ||
| Segmentation | ||
| SMS Marketing | ||
| E-commerce Features | Not listed | |
| Email Marketing | Not listed | |
OneSignal vs Postscript cost by team size
OneSignal costs less at every team size we checked.
| Team size | OneSignal | Postscript |
|---|---|---|
| 1 user | FreeFree | $49/moStarter |
| 5 users | FreeFree | $49/moStarter |
| 10 users | FreeFree | $49/moStarter |
| 25 users | FreeFree | $49/moStarter |
| 50 users | FreeFree | $49/moStarter |
The plan that fits each team size, billed monthly, before add-ons and usage charges. Each cost opens that tool's pricing calculator for the team size.
Which One Should You Choose?
Why choose OneSignal
- Has a free plan (Postscript does not)
- Lower estimated cost for 10 users: Free vs $49/mo
- Higher Cost score (7/10 vs 5/10)
- Higher Integration score (8/10 vs 6/10)
- Better fit for saas companies (7/10 vs 1/10)
Why choose Postscript
- Higher Analytics score (7/10 vs 6/10)
- Better fit for e-commerce (10/10 vs 5/10)
Pros & Cons
OneSignal
Pros
- A free plan with unlimited push up to 1,000 MAU and 10,000 emails a month makes it cheap to start.
- Push, in-app, email and SMS run from one platform with cross-channel journeys.
- Reviewers on G2 and PeerSpot say the dashboard is easy for non-technical marketers to use.
- A broad integration catalog covers CDPs such as Segment, RudderStack and Hightouch, data warehouses, and analytics tools.
Cons
- PeerSpot reviewers call it expensive for large subscriber bases.
- Free and Growth plans cap segments at 6 and 10, and reporting history at 30 and 90 days.
- SMS pricing is not published and requires a sales conversation.
- Reviewers mention unclear documentation for advanced cases and limited in-app design options.
Postscript
Pros
- Built around Shopify, so store data drives segments, flows and attribution with little setup.
- Starter has no platform fee, and message rates fall on the higher tiers for high-volume senders.
- Every plan includes unlimited segments, a visual flow builder with templates and response management.
- Holds about a 4.7 rating across more than 1,100 Shopify App Store reviews.
- A $100 trial credit lets stores test real sends before choosing a plan.
Cons
- Covers texting only. Email is on a waitlist, so most stores need a separate email platform.
- Starter charges the $49 minimum even in months with no sends.
- Live chat support requires Growth or higher, and recent reviews criticize the move to AI-first support.
- Some merchants report annual contracts that renewed for another year without them noticing.
- Built for US and Canada; comparison articles report international SMS at about $0.25 per message.
Not sold on either?
Frequently Asked Questions
OneSignal scores higher on our Marketing criteria: 7.1/10 against 6.3/10 for Postscript. The largest gap is in Cost: 7/10 for OneSignal and 5/10 for Postscript.
OneSignal costs less for 10 users: free on its Free plan, against about $49/mo on its Starter plan for Postscript, billed monthly.
OneSignal has a free plan; Postscript does not list one.
OneSignal is the better fit for saas companies: we rate it 7/10 for them, against 1/10 for Postscript.
