curl --request GET \
  --url https://api.lemlist.com/api/team/senders \
  --header 'Authorization: Basic <encoded-value>'

import requests

url = "https://api.lemlist.com/api/team/senders"

headers = {"Authorization": "Basic <encoded-value>"}

response = requests.get(url, headers=headers)

print(response.text)

const options = {method: 'GET', headers: {Authorization: 'Basic <encoded-value>'}};

fetch('https://api.lemlist.com/api/team/senders', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

require 'uri'
require 'net/http'

url = URI("https://api.lemlist.com/api/team/senders")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Basic <encoded-value>'

response = http.request(request)
puts response.read_body

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.lemlist.com/api/team/senders",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "Authorization: Basic <encoded-value>"
  ],
]);

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

curl_close($curl);

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

[
  {
    "userId": "usr_QB6kKK1wv68DujOET",
    "campaigns": [
      {
        "_id": "cam_tBpHORyt3WhTQoi5A",
        "name": "Onboarding",
        "status": "paused",
        "sendingChannels": [
          "email",
          "manual",
          "linkedinVisit"
        ]
      },
      {
        "_id": "cam_O3BQOaXuyUuyqEHug",
        "name": "Community Launch",
        "status": "running",
        "sendingChannels": [
          "email",
          "manual",
          "linkedinVisit"
        ]
      },
      {
        "_id": "cam_NTJ1rituEQ61jVl6p",
        "name": "Email Warmup Test",
        "status": "ended",
        "sendingChannels": [
          "email",
          "manual",
          "linkedinVisit"
        ]
      },
      {
        "_id": "cam_1kESsVXFMzfrJImNc",
        "name": "Product Launch Campaign",
        "status": "draft",
        "sendingChannels": [
          "email",
          "manual",
          "linkedinVisit"
        ]
      }
    ]
  },
  {
    "userId": "usr_v5xz8De4nsLeNWAfv",
    "campaigns": [
      {
        "_id": "cam_fDwCRnYtL1cfwcA7k",
        "name": "WhatsApp Outreach",
        "status": "draft",
        "sendingChannels": [
          "email",
          "whatsappMessage"
        ]
      },
      {
        "_id": "cam_WBCWNrsoMKkCWWLqw",
        "name": "WhatsApp Test Campaign",
        "status": "ended",
        "sendingChannels": [
          "email",
          "whatsappMessage"
        ]
      }
    ]
  },
  {
    "userId": "usr_rhhX1KT0qgOGCOrgE",
    "campaigns": [
      {
        "_id": "cam_pCi08vhGoho2oK3YR",
        "name": "Networking",
        "status": "running",
        "sendingChannels": [
          "email",
          "linkedinSend",
          "linkedinVisit",
          "linkedinInvite"
        ]
      },
      {
        "_id": "cam_zhcBovstiHVaV1abf",
        "name": "Product Tools Campaign",
        "status": "paused",
        "sendingChannels": [
          "email",
          "linkedinSend",
          "linkedinVisit",
          "linkedinInvite"
        ]
      }
    ]
  }
]

Bad params (invalid state parameter)

The authentication you supplied is incorrect