---
title: "Preview campaign personalized lists"
method: POST
path: "/campaigns/{campaignId}/preview-computed-data"
tags: ["Campaigns"]
---

# Preview campaign personalized lists

`POST /campaigns/{campaignId}/preview-computed-data`

Preview the per-recipient lists that a campaign computes from campaign data.

## Path parameters

- `campaignId` string, required

## Request body

- object
  - `subscriberId` string — Existing subscriber ID to use for preview.
  - `subscriber` object — Inline subscriber preview data.
    - `email` string, email, required
    - `firstName` string, nullable
    - `lastName` string, nullable
    - `customAttributes` object

## Response `200`

Computed data previewed successfully

- object
  - `success` boolean, required
  - `variables` object, required
  - `lists` object[], required
    - `key` string
    - `items` object[]
    - `exposures` object[]

## Other responses

- `400` — Validation error
- `401` — Unauthorized
- `404` — Campaign not found
- `422` — Request body failed schema validation

---

[API](https://skmtc.net/sequenzy/apis/sequenzy-api.md) · [All operations](https://skmtc.net/sequenzy/apis/sequenzy-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/sequenzy/sequenzy-api/versions/af1cf9620482/schema)