Courier vs Customer.io vs OneSignal
| Attribute | |||
|---|---|---|---|
| Category | API Management | Marketing | Email & Messaging Marketing |
| Pricing | Free tier | Paid | Free tier |
| Starting price | $0.005/month | $100/month | $99/month |
| Free tier | Yes | No | Yes |
| Free trial | No | Yes | Yes |
| Deployment | — | Cloud | — |
| API available | Unknown | Unknown | Unknown |
| Platforms | — | — | — |
| Certifications | — | — | — |
| Integrations | — | — | — |
| Company | — | — | Founded 2011 |
| Feature attributes | |||
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Unknown values show as “Unknown”/“—”. Nothing is inferred — see each tool page for sources.