Documentation
Guides for automated voice calls and spoken OTP flows.
Initiate an outbound call with a template or custom TTS message.
Deliver one-time codes via voice for users where SMS is unavailable.
Automatically escalate from SMS to voice when delivery fails or times out.
Use voice calls for high-priority notifications that must not be missed.
Configure SMS → WhatsApp → voice fallback in a single API call.
Receive call status and delivery events pushed to your endpoint.
Handle failed calls, busy signals, and connection errors gracefully.