---
title: "Sync Signup Audience"
method: POST
path: "/api/scheduled-notifications/admin/sync-signup-audience"
tags: ["Email Notifications"]
---

# Sync Signup Audience

`POST /api/scheduled-notifications/admin/sync-signup-audience`

Cron job endpoint to sync recent signups to the Resend signup audience.
Trigger every 6 hours (e.g. 00:00, 06:00, 12:00, 18:00 UTC) for contiguous 6-hour windows with no overlap.
Each run processes users created in the preceding 6-hour window.

Requires x-api-key header for authentication.

## Headers

- `x-api-key` string, required

## Response `200`

Successful Response

- unknown

## Other responses

- `422` — Validation Error

---

[API](https://skmtc.net/usecreed/apis/creed-api.md) · [All operations](https://skmtc.net/usecreed/apis/creed-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/usecreed/creed-api/revisions/523833f9e819/schema)