You’ve probably heard of—and maybe even used—an online signature tool before. They’re great for getting a contract signed quickly. But what happens after the signature? For many firms, it’s back to manual work: creating an invoice, setting a reminder, and hoping the payment comes in on time. A truly modern firm needs more than just a digital pen. It needs a system where the signature is the trigger that automates everything that comes next. In this article, we’ll explore the best tools on the market, from simple standalone signers to all-in-one platforms that connect your proposals, signatures, invoicing, and payments into one seamless workflow, helping you get paid without the hassle.