1. A supported action happens
An Instagram user interacts with a professional account in a way covered by a subscribed event field. For a messaging workflow, the app must already have the right account authorization, permissions, and webhook subscription in place.
2. Meta sends a notification
Meta delivers a webhook notification to the configured HTTPS callback. The payload includes event data the integration can use, such as identifiers and message information for a supported messaging event. Fields vary by event type and API setup; build against the current payload documentation rather than a screenshot.
3. The callback validates and accepts it
The receiving server verifies that the notification is genuine, checks that the payload is structurally valid, and records enough information to process it. The callback should acknowledge promptly; expensive work such as attachment processing, notifications, or analytics can happen asynchronously.
4. The app turns the event into work
A worker maps the event to the authorized account and conversation, stores the minimum data needed by the product, and updates a team queue. An idempotency check protects against duplicate delivery. A routing rule can assign the thread based on language, business hours, topic, or an existing owner.
If a person replies, the product must separately check whether the message is eligible under the matching Meta setup. Receiving an event is not itself permission to send a reply.
5. The system monitors and recovers
Record delivery success, callback errors, queue age, retries, and the number of events that could not be matched to an account. Add an operator-facing state for an event that needs investigation instead of silently dropping it.
Meta notes that webhooks do not provide a historical notification store. Decide how the product will behave after an outage, and retain event data in line with user expectations, privacy requirements, and platform terms.
The Niaje distinction
The Niaje demo does not receive webhook events or call Meta. Its sample inbox is designed to help people discuss the workflow, not to simulate actual webhook infrastructure or live delivery guarantees.
Frequently asked questions
What happens if a webhook event is delivered twice?
The application should process events idempotently, using a stable identifier where available, so a retry does not create duplicate threads or actions.
Can a webhook event directly authorize an Instagram reply?
No. Receiving an event and being eligible to send a reply are separate. The app must check permissions, account setup, message context, and current messaging rules.
Can I recover missed notifications from Meta later?
Meta’s webhook overview says webhook notifications do not provide a historical notification store. Plan for outages and decide what data your app needs to retain.
Sources and further reading
Platform behavior and review requirements change. Confirm details in Meta’s current documentation before you build or send a message.
Guide updated November 2, 2026. The date does not replace checking the live platform documentation.
