Vishalrathod8788/whatsapp-bulk-automator — reverse-engineered prompt

Build me a WhatsApp bulk messaging web app for small businesses. I want to upload a CSV or Excel file of contacts, write one message template, use contact fields to personalize each message, then start sending to everyone with safe configurable delays between messages.

The app should show a simple dashboard with the current campaign, how many messages are pending, sent, failed, and completed, with live progress updates while it runs. Make it easy to review the uploaded contacts before sending and show clear errors if phone numbers or files are wrong. Keep the interface clean and beginner friendly.

Use the MERN style setup this project is meant for, with a backend that handles file processing and message sending, and a frontend that lets me manage the whole flow. Please keep it practical for opt in contacts only, and look up current docs online if you need to.