Piwik\Plugins\UsersManager\API::checkEmail PHP Метод

    private function checkEmail($email)
    {
        if ($this->userEmailExists($email)) {
            throw new Exception(Piwik::translate('UsersManager_ExceptionEmailExists', $email));
        }
        if (!Piwik::isValidEmailString($email)) {
            throw new Exception(Piwik::translate('UsersManager_ExceptionInvalidEmail'));
        }
    }