One API, three channels
POST /api/v1/messages with an X-API-Key sends email, SMS, or WhatsApp; scoped keys and rate limits included.
Transactional messaging
OTPs, receipts, and updates that always arrive.
Send transactional email, SMS, and WhatsApp from a single REST endpoint with idempotency keys, HMAC-signed webhooks, and per-message delivery tracking.
01How QuickGrow helps
Safe to retry
Idempotency-Key headers guarantee a retried request never double-sends.
Signed delivery events
HMAC-SHA256 signed webhooks (message.sent/delivered/failed/bounced) with a replay window and delivery logs.