Reliable event delivery with exponential backoff retries, HMAC signatures, and dead-letter queues.
Every feature designed for reliability at scale. No compromises.
Exponential backoff retries with dead-letter replay
Verify webhook authenticity with SHA-256 signatures
Full delivery log with request/response payloads
Receive real-time delivery status updates for every message — sent, delivered, failed, read — without polling the API.
Receive incoming SMS, WhatsApp, and voice call events and route them to your application logic in real-time.
Trigger downstream actions — update CRM records, send follow-ups, create tickets — based on real-time communication events.
Provide your HTTPS webhook URL and select which event types you want to receive. We send a verification challenge to confirm.
Events arrive as JSON payloads via HTTP POST. Each payload includes the event type, timestamp, and relevant data.
Your application processes the event and returns a 200 status. Failed responses trigger automatic retries with exponential backoff.
SOC 2 Compliant
Audited annually
Encryption at Rest
AES-256
99.95% Uptime SLA
Guaranteed
Multi-Region
3 regions active
Build a complete infrastructure stack with products designed to work together.
Start with our free tier — no credit card required. Scale to millions of messages with enterprise support, custom SLAs, and dedicated infrastructure.
Free tier includes 1,000 emails/month. No credit card required. Enterprise plans include dedicated IPs, custom SLAs, and 24/7 support.