Limit Email Domains

Limit Email Domains (Accept only particular Domains) in Fluent Forms Form Submission

This snippet will for your emails field where You can limit the specific domain emails as valid 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 accepted domains here
     * Other domains will be failed to submit the form
     */
    $acceptedDomains = ['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, $acceptedDomains)) {
        return [$errorMessage];
    }
    return $error;

}, 10, 5);

/*
 * 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 accepted domains here
     * Other domains will be failed to submit the form
     */
    // You may change the following 3 lines
    $targetFormId = 12;
    $acceptedDomains = ['gmail.com', 'hotmail.com', 'test.com'];
    $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, $acceptedDomains)) {
        return [$errorMessage];
    }
    return $error;

}, 10, 5);