How to Add BCC to Email Notifications (for specific form)

/**

 * Add BCC recipients to specific form email notifications.

 *

 * @link https://wpforms.com/docs/how-to-add-bcc-to-email-notifications/

 */

add_filter( 'wp_mail', function ( $args ) use ( $form_id ) {

    // Only run this snippet on form ID 1000

    if ( $form_id === 1000 ) {

        // Add the BCC email address here

        $bcc_address = 'Bcc: [email protected]';

        if ( ! empty( $args[ 'headers' ] ) ) {

            if ( ! is_array( $args[ 'headers' ] ) ) {

                $args[ 'headers' ] = array_filter( explode( "\n", str_replace( "\r\n", "\n", $args[ 'headers' ] ) ) );

            }

        } else {

            $args[ 'headers' ] = [];

        }

        $args[ 'headers' ][] = $bcc_address;

    }

    return $args;

});