You don't have to lie to your clients in order to decouple the billing role from individual people. In my company we have a "billing@company.com" alias. Invoi

You don't have to lie to your clients in order to decouple the billing role from individual people. In my company we have a "billing@company.com" alias. Invoices go into a database and are mailed out to customers from that alias. Our billing system logs when the invoice was sent (and re-sent, if necessary). Incoming mail to that alias gets routed to the people responsible for dealing with invoices. Notices of overdue payment can come from the same alias (however we prefer to handle such matters personally and more directly). If you are a one-man shop, go ahead and create the role alias and then delegate when you grow.