Bulk WhatsApp Broadcasting Panel Development

I need a straightforward panel that lets me broadcast WhatsApp messages in bulk without getting lost in complicated menus. The core task is simple: I upload a contact file (CSV or Excel), type or paste my message, attach any images or videos I like, hit send, and the system delivers everything quickly and reliably. Key needs • Message broadcasting is the main workflow—no chatbot or drip-campaign logic required. • Full multimedia support: photos and videos must go out exactly as they look in WhatsApp. • Contact management stays manual, so an intuitive import/export screen is essential (drag-and-drop or browse-to-upload is fine). Deliverables 1. Web-based or desktop panel, fully functional on delivery. 2. Source code plus a brief setup guide so I can reinstall on another server or PC. 3. A quick user manual showing how to upload contacts, compose a message, attach media, and launch a broadcast. 4. Test run proving successful delivery of a small sample campaign. If you already have a stable solution or can build one quickly with the official WhatsApp Business API, yowsup, Chat-API, or another proven stack, let me know which approach you prefer along with any sending limits or device requirements.

Project ID: 40569426