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APIs, webhooks, and events for the teams that build

One REST API covers SMS, WhatsApp, RCS, and email. Webhooks push delivery states, inbound replies, and consent changes back to your systems. An SMPP gateway is available for teams with existing SMPP workflows. Sandbox credentials and documentation get you sending; an engineer from our team gets you to production.

REST · Webhooks · SMPPSandbox
Webhook eventsLive
DeliveredWhatsApp · delivery state
Inbound replySMS · inbound message
Consent changeRCS · opt-in recorded

What you can integrate

Send and receive

One authentication model and one request shape across all four channels. Adding a channel later is configuration, not a new integration.

Webhooks and events

Subscribe to delivery states, inbound messages, and consent changes. Trigger sends from business events instead of polling.

SMPP gateway

For teams already sending over SMPP, or partners bringing their own routes — coexistence with existing workflows rather than a migration deadline.

Templates and consent over API

Create and submit Message Templates programmatically, and read or write consent state so your own systems stay the source of truth.

Reporting over API

Delivery, usage, and performance data available to your BI stack, not only as an export from a dashboard.

What the sandbox doesn’t cover

APIs are the easy part. What takes time in this business is WhatsApp Business Account verification, template approval, sender registration per country, and route behavior in each market. Those are handled by our team alongside yours — which is why Messangi is not a self-serve tool and doesn’t pretend to be.

Before productionGo-live checklist
  • WhatsApp Business Account verificationWith Meta, through our team Verified
  • Template approvalSubmitted and tracked per template In review
  • Sender registration per countryLocal requirements, market by market In progress
  • Route behavior in each marketMonitored by our team Monitored

Documentation

Full API reference, quickstarts, and webhook payload documentation at docs.messangi.com.

Frequently asked questions

Ask for them through the contact form and we’ll provision an environment with a technical contact assigned.

Get sandbox credentials and a technical contact