How to Add a Custom Form to Your Squarespace Site

Squarespace makes it easy to build a beautiful website. But when it comes to forms, a lot of users hit a wall quickly. The native Squarespace form block is fine for simple contact forms. But the moment you need something more dynamic. Fee calculations, multi-section registration forms, and custom email formatting, or more than 30 fields, the native block runs out of the road fast. Squarespace recommends adding no more than 30 fields to keep a form that is user-friendly and quick to load, and that's the hard limit for forms connected to Mailchimp. For anyone running event registrations, membership applications, or client intake forms, 30 fields are not enough. In this guide, you'll learn how to add a fully custom HTML form to your Squarespace site using a code block with dynamic calculations, custom email notifications, and spam protection included using Formgrid.dev . Why Squarespace's Native Form Isn't Always Enough Squarespace's built-in form block covers the basics well. But here ar