Zapier is a no-code automation tool that helps users automate business-critical tasks from Google Sheets by creating automated workflows called Zaps. The platform integrates with thousands of apps, including Google, Salesforce, and Microsoft, allowing users to connect apps through automated workflows. To create a Zap that automatically sends emails from spreadsheet data, users must first set up their Google Sheets trigger, connecting the app and selecting the specific worksheet to use. They then customize the email notification by mapping fields from the trigger, specifying the recipient, subject, body, and any additional formatting or content. Once the Zap is configured, users can test it to ensure it's working properly and send business-critical emails to their team or customers, streamlining communication and reducing manual work.