We want to develop a script so we can send WhatsApp and Viber mass messages using (web based) an API.
This program or api should contain a new whatsapp protocol, be able to upload a text file and image with the phone numbers and enter a message that will be sent to millions of numbers in text file automatically (TXT, CSV, XLS , JPG, PNG).
Can automatically distinguish which number is using WhatsApp or Viber.
Do not allow Whatsapp and Viber to stop the phone number registered after sending hundreds of messages.
Delivery report can be exported.
12 freelancers are bidding on average $2621 for this job
We can do this through whatsapp in .net application, please share the working of software flow and how you want to use , so that we can customized it