Feature

Webhooks for new subscribers

Get a signed POST to your own endpoint, or a Slack message, whenever someone subscribes or confirms their subscription.

React to signups in real time — add the subscriber to your email tool, alert your team, or kick off onboarding — without polling.

How it works

  • Register webhooks per campaign for subscriber.created and subscriber.confirmed.
  • Every delivery is signed (HMAC-SHA256 with a timestamp) using a secret shown once at creation.
  • A Slack kind posts a readable message to a Slack Incoming Webhook.
Read the full docs →