Notion vs Readwise vs Spark Mail vs Superhuman
| Attribute | ||||
|---|---|---|---|---|
| Category | Productivity & Collaboration | Productivity & Collaboration | Communication | Communication |
| Pricing | Free tier | Paid | Free tier | Paid |
| Starting price | $10 | $5.59/month | $4.99/month | $30/month |
| Free tier | Yes | No | Yes | No |
| Free trial | Yes | Yes | Yes | Yes |
| Deployment | — | — | — | — |
| API available | Yes | Unknown | Unknown | Unknown |
| Platforms | — | — | — | — |
| Certifications | — | — | — | — |
| Integrations | 18 | 1 | — | 5 |
| Company | Founded 2013 | — | — | — |
| Feature attributes | ||||
| Sso Saml | ✓ Yes | — Unknown | — Unknown | — Unknown |
| Rbac | — Unknown | — Unknown | — Unknown | — Unknown |
| Mobile App | — Unknown | — Unknown | — Unknown | — Unknown |
| Webhooks | ✓ Yes | — Unknown | — Unknown | — Unknown |
| Data Export | — Unknown | — Unknown | — Unknown | — Unknown |
| Docs Editor | — Unknown | — Unknown | — Unknown | — Unknown |
| Real Time Collaboration | ✓ Yes | — Unknown | — Unknown | — Unknown |
| Storage Included | — Unknown | — Unknown | — Unknown | — Unknown |
| Offline Access | — Unknown | — Unknown | — Unknown | — Unknown |
| Templates | ✓ Yes | — Unknown | — Unknown | — Unknown |
Also consider
Unknown values show as “Unknown”/“—”. Nothing is inferred — see each tool page for sources.