Automated Cold Email Campaign with Google Sheets, Verification & SMTP

This workflow streamlines cold email campaigns by integrating Google Sheets for lead management, email verification services like Hunter API for deliverability checks, and SMTP for sending emails through providers like Gmail or Outlook. It fetches lead data automatically, validates email addresses to ensure they are active and deliverable, then dispatches customized emails at scheduled times while updating the sheet with results. The process begins with a trigger (manual or scheduled), reads ro