Use them with the API
- Sync sign-ups into another tool: listen for
subscriber.created; callGET /api/v1/subscribers/{id}when you need the full record. - Backfill first, then listen: page through
GET /api/v1/subscribersonce, then let webhooks keep you current. - Mirror opt-outs back from your email tool with
POST /api/v1/unsubscribes.
"source": "api" (single) or "source": "api_bulk" in the
subscriber.created payload, so your receiver can tell them from storefront sign-ups.
The number of webhook endpoints depends on your plan.