Ban Email Addresses Or Domains Name in Fluent Forms Form Submission

Ban Email Domains (Ban Particular Domains) in Fluent Forms Form Submission

This snippet will for your email fields where it will ban certain domains. Please check both available snippet and use which is applicable for you.

Don’t forget to change the values where it mentioned

/*
 * Snippet: 1
 * This will apply for all the forms in your site
 */
add_filter('fluentform_validate_input_item_input_email', function ($error, $field, $formData, $fields, $form) {
    /*
     * add your not accepted domains here
     * The mentioned domains will be failed to submit the form
     */
    $invalidDomains = ['gmail.com', 'hotmail.com', 'test.com']; // You may change here
    $errorMessage = 'The provided email domain is not accepted'; // You may change here

    $fieldName = $field['name'];
    if (empty($formData[$fieldName])) {
        return $error;
    }

    $valueArray = explode('@', $formData[$fieldName]);
    $inputDomain = array_pop($valueArray);

    if (in_array($inputDomain, $invalidDomains)) {
        return [$errorMessage];
    }
    return $error;
}, 10, 5);

OR

/*
 * Snippet: 2
 * This will apply for only form id: 12
 */
add_filter('fluentform_validate_input_item_input_email', function ($error, $field, $formData, $fields, $form) {
    /*
     * add your not accepted domains here
     * The mentioned domains will be failed to submit the form
     */
    // You may change the following 3 lines
    $targetFormId = 12;
    $invalidDomains = ['gmail.com', 'hotmail.com', 'test.com']; // You may change here
    $errorMessage = 'The provided email domain is not accepted';

    if ($form->id != $targetFormId) {
        return $error;
    }

    $fieldName = $field['name'];
    if (empty($formData[$fieldName])) {
        return $error;
    }

    $valueArray = explode('@', $formData[$fieldName]);
    $inputDomain = array_pop($valueArray);

    if (in_array($inputDomain, $invalidDomains)) {
        return [$errorMessage];
    }
    return $error;

}, 10, 5);

Thank You.