Rocket Sender is a free Chrome extension that turns WhatsApp Web into a bulk messaging tool, letting you send personalized messages to large contact lists without needing an API. Once installed, you import contacts by uploading an Excel file (or adding numbers manually), write your message using contact variables for personalization, attach up to five images, videos, or documents, and set a sending interval before starting the queue. You can pause, resume, and track successful, failed, and pending sends in real time right from your browser.
