Developer Builds Gmail Campaign Automation Chrome Extension With Flask Backend

A developer has built TinyTask Mailer Pro, a Chrome extension that automates Gmail email campaigns for small businesses, freelancers, and sales teams. The tool reads campaign data directly from Google Sheets, supports email personalization using placeholders, and uses chrome.storage.local to save progress across browser restarts. A Flask backend handles license validation, keeping sensitive business logic off the client side. The extension incorporates randomized send delays to avoid robotic timing patterns and includes resume functionality to prevent duplicate emails after interruptions. The project was designed to reduce repetitive manual email tasks while keeping users in control of the sending process.