Waitlist Signup with Email Verification Loop

Product owners, marketers, or developers managing waitlists for new apps or services. Users fill a form to join a waitlist. The system cleans data, makes an OTP code, adds info to Google Sheets, emails the code, and asks for verification. It loops if wrong until correct. Then, it collects use case and marks as verified in the sheet. Create a Google Sheet with columns: Firstname, Lastname, Email, Company, Verification-Code, Verified, Intended Use. Add n8n credentials for Google Sheets and SMTP email. Set webhook paths for forms. Activate the workflow. n8n account, Google Sheets API access, SMTP server for emails (like Gmail or custom). Change form questions, email text, sheet columns, or OTP length. Add more fields or integrate with CRM tools. Key Technologies: n8n Workflow Automation,Google Sheets Integration,SMTP Email Sending,Crypto Node for OTP Generation,Form Triggers and Handling Automation Value: Cuts manual work: Auto-verifies emails and stores data without staff checks. Boosts security: OTP prevents fake signups. Handles loops: Re-asks for code until right, avoids lost data. Scales easily: Manages many signups without extra effort. Tracks intent: Gathers use cases to plan product features. Best Practices: Use short, secure OTPs to balance ease and security. Always trim and validate emails to avoid storage errors. Implement loops for user errors but add max attempts to prevent abuse. Keep forms simple with clear instructions for higher completion. Test email delivery and sheet permissions before going live. Monitor webhook paths to avoid conflicts in production. Customize error messages to guide users without revealing sensitive info.