curl --request GET \
  --url https://api.wabox.me/instances/{instance_id}/token/{token}/newsletters

const options = {method: 'GET'};

fetch('https://api.wabox.me/instances/{instance_id}/token/{token}/newsletters', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.wabox.me/instances/{instance_id}/token/{token}/newsletters"

response = requests.get(url)

print(response.text)

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.wabox.me/instances/{instance_id}/token/{token}/newsletters",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.wabox.me/instances/{instance_id}/token/{token}/newsletters"

	req, _ := http.NewRequest("GET", url, nil)

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

{
  "data": [
    {
      "id": "120363999999999999@newsletter",
      "name": "Canal Wabox",
      "description": "Novidades da API",
      "invite_code": "0029VaAbCdEfGhIjKlMn1o",
      "invite_url": "https://whatsapp.com/channel/0029VaAbCdEfGhIjKlMn1o",
      "subscriber_count": 1234,
      "verified": false,
      "state": "active",
      "picture_url": "https://pps.whatsapp.net/v/t61.24694-24/abc.jpg",
      "role": "owner",
      "muted": false,
      "created_at": "2026-06-01T10:00:00.000Z",
      "reactions_mode": "all"
    }
  ]
}

{
  "error": {
    "code": "instance_not_found",
    "message": "Instance not found or invalid token"
  }
}

{
  "error": {
    "code": "subscription_required",
    "message": "Trial expired or subscription inactive. Subscribe in the dashboard to keep sending."
  }
}

{
  "error": {
    "code": "instance_not_connected",
    "message": "Instance is not connected"
  }
}