The SuprSend REST API enables you to sync user data and send notifications at scale. We have SDKs for most popular languages. If your backend or frontend is built in another language or you prefer direct integration, you can use the REST API to programmatically interact with SuprSend.

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Authentication

REST APIs require an API Key for authentication. API Keys are scoped per workspace (e.g., Sandbox, Staging, Production), ensuring isolation across environments. Include your API Key in the Authorization header as a Bearer token: 
Authorization: Bearer <YOUR_API_KEY>
Content-Type: application/json

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API Reference

For a complete list of endpoints and request/response schemas, see the API Reference.

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Postman Collection

The fastest way to get started is by exploring the APIs in our Postman Collection.