Courier vs Customer.io vs Klaviyo vs OneSignal
| Attribute | ||||
|---|---|---|---|---|
| Category | API Management | Marketing | Email & Messaging Marketing | Email & Messaging Marketing |
| Pricing | Free tier | Paid | Free tier | Free tier |
| Starting price | $0.005/month | $100/month | $20/month | $99/month |
| Free tier | Yes | No | Yes | Yes |
| Free trial | No | Yes | No | Yes |
| Deployment | — | Cloud | — | — |
| API available | Unknown | Unknown | Yes | Unknown |
| Platforms | — | — | — | — |
| Certifications | — | — | 4 | — |
| Integrations | — | — | 2 | — |
| Company | — | — | Founded 2012 | Founded 2011 |
| Feature attributes | ||||
| Sso Saml | — Unknown | — Unknown | ✓ Yes | — Unknown |
| Rbac | — Unknown | — Unknown | — Unknown | — Unknown |
| Mobile App | — Unknown | — Unknown | — Unknown | — Unknown |
| Webhooks | — Unknown | — Unknown | ✓ Yes | — Unknown |
| Data Export | — Unknown | — Unknown | ✓ Yes | — Unknown |
| Email Automation | — Unknown | — Unknown | — Unknown | — Unknown |
| Sms Marketing | — Unknown | — Unknown | ✓ Yes | — Unknown |
| Templates | — Unknown | — Unknown | ✓ Yes | — Unknown |
| Segmentation | — Unknown | — Unknown | ✓ Yes | — Unknown |
| Deliverability Tools | — Unknown | — Unknown | ✓ Yes | — Unknown |
Also consider
Unknown values show as “Unknown”/“—”. Nothing is inferred — see each tool page for sources.