LocalhostMail

LocalhostMail is a simple and fast solution for Mac OS X that lets you send email messages from your PHP-application (or any other, located on localhost) by Mail.app included with Mac OS X. If you use PHP, just add to MySQL database new messages, and our application will send them through a Mail application. LocalhostMail uses your mail account in Mail.app to send these messages, so you do not need a separate SMTP-server for your localhost.