---
title: "Unsubscribe a contact from a list"
method: POST
path: "/api/lists/{id}/unsubscribe"
tags: ["Lists"]
---

# Unsubscribe a contact from a list

`POST /api/lists/{id}/unsubscribe`

## Request

- Base URL: `https://api.sendly.now`
- URL: `https://api.sendly.now/api/lists/{id}/unsubscribe`
- Auth: one of:
  - HTTP bearer
  - API key in cookie `better-auth.session_token`

Mark the contact's membership on this list as `UNSUBSCRIBED`. Accepts SENDING_ONLY (`pk_*`) keys so it can back a public preference form. Idempotent — unsubscribing an address that is not a member succeeds.

Once a membership is `UNSUBSCRIBED`, a later `POST /api/lists/{id}/subscribe` needs `allowResubscribe: true` to reverse it.

## Path parameters

- `id` string, required: List id.

## Request body

- ListUnsubscribe: Body for POST /api/lists/{id}/unsubscribe.
  - `email` string, email, required

## Response `200`

Contact unsubscribed

- ListUnsubscribeResponse: Echoes the address that was unsubscribed.
  - `data` object, required
    - `email` string, email, required
  - `success` true, required

## Other responses

- `400`: Validation error
- `401`: Unauthorized — missing or invalid auth
- `403`: Forbidden — insufficient permissions or project disabled
- `404`: Resource not found
- `422`: Validation failed — request body or query parameters did not match the schema
- `429`: Rate limit or billing limit exceeded
- `500`: Internal server error

---

[API](https://skmtc.dev/sendly/apis/sendly-api.md) · [All operations](https://skmtc.dev/sendly/apis/sendly-api/llms.txt) · [OpenAPI document](https://skmtc.dev/sendly/apis/sendly-api/revisions/ce7cfb7f7c7e?raw)