Fundamentals BroadNet answer

What is a notification API?

Last reviewed August 8, 20261 min readReviewed by BroadNet engineering

Quick answer

A notification API is a programmatic interface that lets an application send notifications to users across channels — SMS, WhatsApp, RCS, voice, email, push — from a single integration. It abstracts each channel's delivery mechanics so your software can trigger a message with one call, and increasingly it orchestrates channel choice and fallback so a notification reliably reaches the user.

Plain-language definitionVendor-neutralReviewed August 8, 2026

DiagramHow an A2P message reaches the phone

Your applicationSends over the REST API or SMPP
BroadNet platformValidates, routes and bills each message
Operator SMSCDirect operator connection
Subscriber handsetThe message is delivered

The delivery receipt (DLR) travels back along the same path to your webhook

The long answer

Everything worth knowing, nothing that isn't.

§01

What it does

It accepts a notification request and delivers it over the chosen channel, handling encoding, sender identity, delivery receipts, and inbound replies — so you integrate once instead of per channel. See /answers/what-is-sms-api and /answers/what-is-omnichannel-messaging.

§02

Single-channel vs omnichannel

A basic notification API sends on one channel; a modern one lets you send on the best eligible channel and fall back automatically — WhatsApp or RCS first, SMS for near-universal reach. See /answers/what-is-omnichannel-orchestration and /answers/sms-fallback-strategy.

§03

What to look for

Channel breadth behind one API, real-time delivery receipts via webhook, throughput for bursts, and signed webhooks for security. See /answers/how-to-choose-cpaas-provider and /products/omnichannel.

BNWritten by the BroadNet engineering team·Operating carrier-grade messaging since 2003, headquartered in Dubai·Editorial standards

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