Automate Email Validation in Google Sheets with n8n

Transform your email marketing and data management with this powerful n8n workflow that automatically validates email addresses in Google Sheets using the Verify Email API. Say goodbye to bounced emails and maintain clean, verified contact lists effortlessly.

What this workflow does

This automated Google Sheets email validator runs weekly (fully configurable) to keep your email lists pristine. The workflow intelligently scans your spreadsheet, identifies unverified email addresses where the Status column is empty, and validates them through the reliable Verify Email API. Results are automatically written back to your sheet with clear validation status - either "Valid" for clean emails or "Block" with specific reasons like Invalid, Blacklisted, or Disposable.

Your Google Sheet requires a simple three-column structure: Email addresses in column A, Status results in column B, and Block reasons in column C. The workflow only processes emails that haven't been validated yet, making it efficient for large datasets.

Use cases

• Email marketing campaigns: Validate subscriber lists before sending to improve deliverability rates and protect sender reputation
• Lead qualification: Automatically verify prospect email addresses in your CRM data stored in Google Sheets
• User registration cleanup: Batch validate email addresses from sign-up forms and registrations
• Database maintenance: Regular email hygiene for customer databases and contact lists

Technical details

Built with essential n8n nodes including HTTP Request for API integration, Google Sheets for data management, Code node for custom logic, IF node for conditional processing, Webhook for triggers, and Sticky Notes for documentation. This workflow requires Google Cloud Console setup with enabled Google Sheets API and Google Drive API, plus OAuth 2.0 credentials configuration.

Perfect for automation engineers, SaaS operators, and marketing teams who need reliable, hands-off email validation directly within their Google Sheets workflow.