I’m looking for a practical WhatsApp chatbot that can reliably send at least 2,500 marketing messages each month without triggering WhatsApp’s number-blocking filters. Every outgoing message should merge in the recipient’s first name so it feels personal, and whenever someone writes back the bot must immediately answer with a predefined automated reply. The core goals are straightforward: stable delivery, simple personalisation, and minimal ongoing costs. I don’t need advanced customer-support features or AI conversation flows—just a clean, compliant broadcast tool that keeps my sender number safe and handles basic auto-replies. You’re free to choose the tech stack—Twilio, WhatsApp Business API, or any other approach—so long as it meets these acceptance criteria: • Sustains at least 2,500 personalised sends per month without bans or rate-limit issues • Injects the {{name}} variable accurately in each message • Sends an instant canned response to any inbound message • Provides a lightweight dashboard or simple method for me to upload contact lists and edit templates • Runs on low-cost infrastructure and avoids recurring licence fees whenever possible Delivery should include the working chatbot, deployment instructions, and a brief hand-off call or video walkthrough so I can run future campaigns myself.