&reftitle.install; &pecl.moved; &pecl.info; &url.pecl.package;mailparse. In order to use these functions you must compile PHP with mailparse support by using the --enable-mailparse configure option. Windows users will enable php_mailparse.dll inside of &php.ini; in order to use these functions. &pecl.windows.download.avail; It is necessary that the mbstring extension is loaded before mailparse.