Here is a summary of the text: Gatsby is a hybrid framework that bridges the gap between static site generators and traditional web apps, offering the best of both worlds. To add an email contact form to a Gatsby website, developers can create a new file called `contactForm.js` in the `src/components` folder, which contains a React component that manages the form data as state. The form is then added to the component tree in `pages/index.js`, and a serverless function is created using Twilio Functions to handle the email sending process. The function uses SendGrid's API to send emails, and the `contactForm` component makes a fetch request to the serverless function when the submit button is clicked. With this setup, developers can create an email contact form with Gatsby and React that sends emails using SendGrid's API.