I wanted to develop a simple rust programe. it will take an excel file input having cell numbers. Then it will send a predefined Whatsap message on these number. It will record response of each number. Can anyone here help me on this. Especially some one who has already complete such type of task.
Do you already have access to the WhatsApp Business API? If not then that's the first step you have to do. It will allow you to programmatically send WhatsApp messages. I have never used it but it looks like a simple REST API. While there seems to be no Rust crate that conveniently packages this API, it should be straightforward to send requests with something like reqwest and parse results with serde.