How to Send Next.js Form Submissions to Google Sheets Without a Backend

Building a contact form in Next.js is straightforward. You create a form component, add your input fields, wire up some state with useState, and handle the submission with a fetch call. Clean. Predictable. Very Next.js. But then comes the question every Next.js developer eventually faces: Where does the data actually go? The obvious answer is an API route. You create a pages/api/contact.ts file or an app/api/contact/route.ts file, write a handler that receives the submission, and then figure out