Webhooks

Custom webhooks let any HTTPS endpoint you control receive workspace events as signed JSON. Register them in Settings → Integrations → Webhooks.

Set up an endpoint

1. Go to Settings → Integrations → Webhooks.
2. Add your HTTPS endpoint URL.
3. Select the event types to subscribe to (see Integrations overview).
4. Use Send test (test.ping) to confirm connectivity.

Payload envelope

Outbound deliveries use a versioned JSON envelope:

{
  "id": "<event id>",
  "type": "submission.created",
  "version": 1,
  "occurredAt": "2026-06-11T10:00:00.000Z",
  "workspaceId": "<organizationId>",
  "object": { "type": "submission", "id": "…" },
  "data": { "fullName": "…", "email": "…", "formId": "…" }
}

Verify signatures

Each request is signed with HMAC-SHA256 and sent with X-Jambo-Signature and X-Jambo-Timestamp headers. On your endpoint:

1. Recompute the HMAC over the raw body using your endpoint's signing secret.
2. Compare it to X-Jambo-Signature (constant-time).
3. Dedupe on the envelope id — delivery is at-least-once, so the same event may arrive more than once.

Reliability

• Failed deliveries (5xx, 429, timeouts, network errors) are retried.
• After 5 consecutive abandoned deliveries an endpoint auto-pauses.
• You can replay deliveries from the webhook settings UI.

For the full event catalog, JSON samples, and the OpenAPI spec, see the in-app developer docs at /developers/webhooks and /developers/api.

To connect Jambo to Zapier without writing code, see Zapier Catch Hook webhooks — step-by-step recipes for Slack and other apps.