Real-Time DLR Webhooks: Keeping Your Customers Informed
DLR (Delivery Report) webhooks send delivery status to your server in real time. No polling, no delay. When the carrier reports delivered or failed, your URL gets an HTTP POST with the status so you can update your app, trigger workflows, or notify users instantly.
The guide covers why DLR webhooks matter for transactional SMS, OTP, and campaigns. It explains how webhooks work (HTTP POST to your URL with status codes), implementation tips (HTTPS, signature validation, 200 OK response, retry handling), and best practices for idempotency, logging, and security. Whether you run a customer portal, an OTP service, or bulk campaigns, real-time DLR webhooks help you keep customers informed and systems accurate.
Full guide: https://www.smsgatewaycenter.com/blog/real-time-dlr-webhooks/