curl https://api2.ecomailapp.cz/lists \
  -H "key: YOUR_API_KEY" \
  -H "Content-Type: application/json"

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://api2.ecomailapp.cz/lists');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    'key: YOUR_API_KEY',
    'Content-Type: application/json',
]);
$response = curl_exec($ch);
curl_close($ch);

[
  {
    "id": 29,
    "name": "New list name",
    "from_name": "Ecomailapp.cz",
    "from_email": "test@ecomailapp.cz",
    "reply_to": "support@ecomail.cz",
    "sub_success_page": null,
    "sub_confirmed_page": null,
    "unsub_page": null,
    "double_optin": null,
    "conf_subject": null,
    "conf_message": null
  }
]