using Vb mail on non vb script

vBulletin has its own function to handle mail:

Starts the process of sending an email - either immediately or by adding it to the mail queue.
void vbmail (string $toemail, string $subject, string $message, [boolean $notsubscription = false], [string $from = ''], [string $uheaders = ''], [string $username = ''])

• string $toemail: Destination email address
• string $subject: Email message subject
• string $message: Email message body
• boolean $notsubscription: If true, do not use the mail queue and send immediately
• string $from: Optional name/email to use in 'From' header
• string $uheaders: Additional headers
• string $username: Username of person sending the email