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Webhooks integration
Trigger any tool with signed webhooks on every workspace event.
- HMAC-SHA256 signing
- Retries with backoff
- Delivery logs & replay
Auth: Webhook secret Live in 10 minutes Priority support included
What it syncs
Data we move with Webhooks
- Reply received (with intent)
- Meeting booked
- Prospect unsubscribed
- Bounce / block detected
- Campaign status changes
- Any custom event
Example workflows
What teams build with Webhooks
- reply.received → your app
Fire a signed webhook the second a prospect replies — include intent + full thread.
- meeting.booked → Slack + calendar
Post to Slack and add to a shared calendar via your own middleware.
- bounce.hard → data warehouse
Stream every bounce into BigQuery / Snowflake for cohort analysis.
Setup
Connect Webhooks in 10 minutes
- 1Open Settings → Webhooks and click New endpoint.
- 2Paste your HTTPS URL and select the events you want.
- 3Copy the signing secret — verify HMAC-SHA256 on your side.
- 4Send a test event and check the delivery log.
- 5Flip the endpoint live. Failed deliveries retry with exponential backoff for 24h.
Field mapping
Default Webhooks field map
| NxtSend | Webhooks |
|---|---|
| Header | X-NxtSend-Signature (hex HMAC-SHA256) |
| Header | X-NxtSend-Event (e.g. reply.received) |
| Header | X-NxtSend-Delivery (uuid) |
| Body | JSON payload with event + data |
| Body | data.contact, data.campaign, data.workspace |
Every field is customizable per workspace.
Permissions & scopes
What we ask for
You own the endpointWe only send to URLs you configure. No inbound access to your systems.
HMAC signingEvery request is signed with a per-endpoint secret so you can verify authenticity.
Replay + logsEvery delivery is logged for 30 days and can be replayed on demand.
We never request scopes we don't use. Revoke access from Webhooks at any time.
Get Webhooks connected in 10 minutes
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