Twilio SendGrid offers a Design Editor to create Dynamic Email Templates, allowing users to design professional-looking emails without writing HTML by hand. To start, users need to create a SendGrid account and access the Dynamic Templates section in their dashboard. They can then choose between editing the email using the Design Editor or directly through code. The Design Editor features a drag-and-drop interface for inserting images, text, buttons, and other elements. Once a template is created, users can send an email using the SendGrid Dashboard or with code, testing it by sending a test message. To use Dynamic Templates in their own projects, users need to set up a Sender and API key, and install the Twilio SendGrid helper library for Python if needed.