---
title: "Changes to Add users to a campaign"
method: POST
path: "/api/v4/campaigns/{campaign_id}/users"
---

# Changes to Add users to a campaign

`POST /api/v4/campaigns/{campaign_id}/users`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 1 of 2 revisions.

- **2026-11-03** `5a6ea146bd21`: 1 breaking, 8 warning, 1 info

## Changes

- **2026-11-03** `5a6ea146bd21`: 1 breaking, 8 warning, 1 info
  - the response property `added_users/items/deleted_at` became nullable for the status `200`
  - added the new `cs` enum value to the `added_users/items/speech_language` response property for the response status `200`
  - added the new `hu` enum value to the `added_users/items/speech_language` response property for the response status `200`
  - added the new `ja` enum value to the `added_users/items/speech_language` response property for the response status `200`
  - added the new `lt` enum value to the `added_users/items/speech_language` response property for the response status `200`
  - added the new `lv` enum value to the `added_users/items/speech_language` response property for the response status `200`
  - added the new `ro` enum value to the `added_users/items/speech_language` response property for the response status `200`
  - added the new `sk` enum value to the `added_users/items/speech_language` response property for the response status `200`
  - added the new `tr` enum value to the `added_users/items/speech_language` response property for the response status `200`
  - added the optional property `added_users/items/voicemail_playback_enabled` to the response with the `200` status

---

[Operation](https://skmtc.dev/voiso/apis/voiso-api/docs/api/v4/campaigns/:campaign_id/users/post.md) - [API](https://skmtc.dev/voiso/apis/voiso-api.md) - [Page](https://skmtc.dev/voiso/apis/voiso-api/changes/api/v4/campaigns/:campaign_id/users/post)