Ability to disable the sending of $0.00 invoices
WHMCS was designed so that all products/services that are not being charged for are set to FREE. Anything not set to FREE is invoiced. Although not originally thought about during the WHMCS development stages, many of us use the software in slightly different ways than the developers had intended. That being said, many of us are seeing $0.00 invoices being sent to clients followed by a payment confirmation. Useless emails like that are both annoying and a waste of the client's time.
The easy answer is to say... "Use the software in the designed fashion and only in the designed fashion"; however, well... let's just say many of us have an opinion of that statement.This issue has been discussed at http://forum.whmcs.com/archive/index.php/t-9762.html however, I did not find a formal request in this "Feature Request" system so I thought I would post it here.