| Price from | $49/mo | $0.01/mo |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Plans published | 4 | 3 |
| Spec score · Email Personalization Software | 8.5 (#4) | 8.4 (#5) |
| Headquarters | Claymont, Delaware, USA | Nosto lists Helsinki, Finland as its headquarters. |
| Security and privacy | The privacy policy says Cloudflare processes log data for hosting and security and that Alterable uses commercially reasonable security practices, while noting it cannot guarantee absolute security. | Nosto’s Legal Center links to its General Data Privacy & Security information, Privacy Notice, Cookie Notice, and Subprocessor information. |
| Support | Engage is self-serve, Pro offers priority email support with responses within 24 hours, and Scale offers dedicated support with responses within 8 hours. | Customers receive Help Center and Huginn access; Professional and Enterprise customers receive priority support and customer-success alignment. |
| What it does | Alterable generates email content when a recipient opens a message, including countdowns, personalized images, dynamic products, local maps, surveys, and scratchers. | Nosto is a commerce-experience platform that combines customer, product and content intelligence for personalized ecommerce journeys. |
