Not a whole lot. The PHP mail function is just a nice fuzzy function
wrapper to popen("sendmail").
The gory details can be found at
From: Web user [mailto:[EMAIL PROTECTED]]
Sent: Friday, October 26, 2001 8:43 AM
To: [EMAIL PROTECTED]
Subject: [PHP] What's the difference between mail() in PHP and sendmail?
What's the difference between mail() in PHP and sendmail? Thanks! Mike
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