Xbilling

Setting  this to Yes turns on the billing system.

Xbillemailname

This is the name of the company sending the bills via email.

Xbillemailsubject

This is the subject of the billing email received by the customer.

Xbillemail

The email address from which the bill appears to the customer.

Xbilltemplate

The template used to generate the emailed bill. Default is tmp_billemail.txt.