These features have been mentioned elsewhere in the forum but the features haven't been implimented into WHMCS so I thought I'd create this thread to see what other peoples thoughts were.
The first feature was having the ability to charge a "handling fee" on payment gateways, i.e. a percentage and/or a fixed amount per transaction, this would ideally be configurable for each payment gateway as each may vary.
With regard to mail in / bank transfer payments perhaps a function could be added to allow the customer to "mark the payment as sent". So what would happen is that when the customer clicks this "mark payment sent" button an email or alert could be entered into whmcs so that admins were aware that the cheque or postal order has been sent - it might be sensible to have an option to allow customers to undo this as well incase they press the button by mistake when they haven't actually sent the cheque etc yet.
The idea about the "mark payment sent" feature is something that eBay implimented years ago so that sellers knew that the cheque or postal order was on its way so the seller knows that the customer didn't need to be chased up about payment etc. So surely a similar idea would be worthy of being implimented into WHMCS?