---
title: "Update bulk subscribers"
method: PUT
path: "/lists/{list_id}/update-subscribers-bulk"
tags: ["Lists"]
---

# Update bulk subscribers

`PUT /lists/{list_id}/update-subscribers-bulk`

Update multiple existing subscribers in a specific list in a single request.

## Path parameters

- `list_id` integer, required

## Request body

- object
  - `subscriber_data` object[], required — Array of subscriber objects to update. Limited to 3000 subscribers per call.
    - `email` string, required — Email address of the subscriber to update.
    - `name` string — First name.
    - `surname` string — Last name.
    - `status` integer — Subscriber status. `1` = subscribed, `2` = unsubscribed, `4` = hard bounce.
    - `custom_fields` object — Custom field values. Limited to 5000 characters total. Keys are case-insensitive — they are trimmed and lowercased on input, so `SHOP`, `shop` and ` Shop ` are treated as the same field. Two keys that differ only in case or whitespace within the same subscriber are rejected as duplicates.
    - `tags` unknown[] — Subscriber tags. Limited to 2000 characters total and 50 characters per tag. Content overwrites current tags.
      - unknown
  - `allow_resubscribe` boolean — Allow resubscribing previously unsubscribed contacts when `status` is set to `1`.

## Response `200`

OK

- object
  - `updates` integer

## Other responses

- `400` — Bad Request

---

[API](https://skmtc.dev/ecomail/apis/ecomail-api.md) · [All operations](https://skmtc.dev/ecomail/apis/ecomail-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/ecomail/ecomail-api/revisions/31b5789931fe/schema)