Updates a contact with the passed parameters.

Request Parameters

Parameter Type Description Required
action string “UpdateContact” Required
contactid int The id of the contact to update Required
subaccount bool Is the contact a subaccount Optional
firstname string Optional
lastname string Optional
companyname string Optional
email string Optional
address1 string Optional
address2 string Optional
city string Optional
state string Optional
postcode string Optional
country string 2 character ISO country code Optional
phonenumber string Optional
password2 string (sub-account only) Optional
email_preferences[general] bool Should the client receive general emails Optional
email_preferences[product] bool Should the client receive product emails Optional
email_preferences[domain] bool Should the client receive domain emails Optional
email_preferences[invoice] bool Should the client receive invoice emails Optional
email_preferences[support] bool Should the client receive support emails Optional
email_preferences[affiliate] bool Should the client receive affiliate emails Optional
permissions string A comma separated list of sub-account permissions. eg manageproducts,managedomains Optional

Response Parameters

Parameter Type Description
result string The result of the operation: success or error
contactid int The contact ID that was updated

Example Request (CURL)

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://www.example.com/includes/api.php');
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS,
            'action' => 'UpdateContact',
            // See https://developers.whmcs.com/api/authentication
            'username' => 'IDENTIFIER_OR_ADMIN_USERNAME',
            'password' => 'SECRET_OR_HASHED_PASSWORD',
            'contactid' => '1',
            'firstname' => 'John',
            'lastname' => 'Doe',
            'responsetype' => 'json',
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$response = curl_exec($ch);

Example Request (Local API)

$command = 'UpdateContact';
$postData = array(
    'contactid' => '1',
    'firstname' => 'John',
    'lastname' => 'Doe',
$adminUsername = 'ADMIN_USERNAME'; // Optional for WHMCS 7.2 and later

$results = localAPI($command, $postData, $adminUsername);

Example Response JSON

    "result": "success",
    "contactid": "1"

Error Responses

Possible error condition responses include:

  • Contact ID Not Found
  • Duplicate Email Address
  • You must have at least one email address enabled to receive domain related notifications as required by ICANN. To disable domain notifications, please enable domain notifications for the primary account holder or another contact

Version History

Version Changelog
1.0 Initial Version
7.10 Added email preferences parameters