curl -X POST https://api2.ecomailapp.cz/search \
  -H "key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "query": "foo@bar.cz"
  }'

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://api2.ecomailapp.cz/search');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    'key: YOUR_API_KEY',
    'Content-Type: application/json',
]);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode([
    'query' => 'foo@bar.cz',
]));
$response = curl_exec($ch);
curl_close($ch);

[
  {
    "email": "foo@bar.cz",
    "list_id": 1,
    "status": 2,
    "name": "Foo",
    "surname": "Bar",
    "custom_fields": {
      "some_field": "text"
    },
    "tags": ["tags"],
    "source": "app",
    "subscribed_at": "2022-11-15T12:59:21.000000Z",
    "unsubscribed_at": "2023-09-21T10:36:38.000000Z"
  }
]

{
  "errors": {
    "query": ["Invalid email address"]
  }
}