---
title: "Submit a signup form (public, unauthenticated)"
method: POST
path: "/signup-forms/{id}/submit"
tags: ["Signup forms"]
---

# Submit a signup form (public, unauthenticated)

`POST /signup-forms/{id}/submit`

Public endpoint — no API key required. Honeypot + rate-limited. Creates a contact and triggers double-opt-in if configured.

## Path parameters

- `id` string, required

## Request body

- object
  - `email` string, email, required
  - `properties` object

## Response `200`

OK

- object
  - `success` boolean

---

[API](https://skmtc.dev/poststack/apis/poststack-api.md) · [All operations](https://skmtc.dev/poststack/apis/poststack-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/poststack/poststack-api/revisions/0f5bfcfae749/schema)