I need to be able to send and receive what's app messages in an unlimitted.

I need a source code to be able to receive and send mutimedia what's app messages unlimitely. The language type or development for this project can be done as you want as long as it allows me manipulate it to use it for marketing since I need to save it on a database and show it from a web server. Now it can be a google chrome extention or even a web browser which connects whats app web to receive and send all the type of messages.