This is a dumb question I should have asked a long time ago, but I normally just send invoices so far and haven't had to worry about things such as minutes, Texts, email costs. If I send and invoice, does it count as having the Credit card on file for stuff such as minutes, texts, and email costs? I'm wanting to start rebilling them to customers (new ones, not old). I don't want to have to ask for the credit card multiple times to get it "on file". What is the best practice?