Para hacer pruebas esta bien un servidor de correo local, pero ya para estar en produccion es
mejor un servidor remoto.
http://www.000webhost.com/
1500 MB Disk Space, 100 GB Data Transfer
Every account receives 1500MB space and a whopping 100GB bandwidth, made possible by the unmetered connections our servers utilise. Should your site ever need more than our standard package can offer, we also offer a wide range of upgrade options.
PHP with MySQL Database Support
Unlike other free webhosts we do support PHP and MySQL with no restrictions. You get full access to the latest version of PHP and MySQL. The following PHP features are fully supported:
PHP mail() function and Sendmail
Curl, GD2 library, XML, Zend, .htaccess support
fopen() and PHP sockets
safe_mode is OFF, file uploads are ON
Zend Optimizer support, Ioncube loader.. and much more features are enabled