[kh99]

You can define DISABLE_MAIL in config.php to have it logged to a file. Here's the comment from class_mail.php:

/**
 * Send the mail.
 * Note: If you define DISABLE_MAIL in config.php as:
 * 	delimited email addresses	- Only mail for the recipients will be sent
 *	<filename>.log				- Mail will be logged to the given file if writable
 *  any other value				- Mail will be disabled

If you run a mail test from the admincp, I believe (based on a look at the code) that it will be sent even if you've defined DISABLE_EMAIL.