SMS infrastructure built for developers.
One REST endpoint sends a batch to thousands of recipients. Signed webhooks stream real-time delivery receipts. Keys are strictly scoped, requests are idempotent, and every version is rock-solid.
- Interface
- JSON over HTTPS
- Delivery reports
- Signed webhooks
- Retries
- Safe by design
Integrate in your preferred language
Official client libraries and idiomatic code samples across major platforms.
Guides
Built for production scale and developer speed
From mission-critical transactional OTPs to high-volume broadcast campaigns, engineered with banking-grade reliability.
High-Throughput Batches
Dispatch up to 10,000 recipients in a single HTTP request with dynamic per-recipient template variables.
Cryptographic Webhooks
HMAC-SHA256 signed delivery receipts streamed to your servers with automated exponential backoff retries.
Deterministic Idempotency
Pass an Idempotency-Key header to safely retry network timeouts without risking duplicate sends or double charges.
Smart GSM-7 and UCS-2 Detection
Automatic character encoding analysis ensures French accents and special characters are packed efficiently.
Live Developer Account and Balance
Query real-time spendable limits, prepaid credits, and postpaid lines directly via the balance API.
OpenAPI 3.1 and Postman Ready
Export full specifications to generate typed client SDKs or import directly into your API testing workflow.
Find what you need
Start with the quickstart if you have never called the API. Jump straight to the reference if you know the endpoint you want.