I have a system with some members. my members should receive one message each day. I want to send this message via Viber or whatsapp (or if there are others app like them). But I dont want to send messages one by one. I want to send by asp.net c# code. Is there any document or API for this aim?
For Whatsup .NET API:
https://github.com/perezdidac/WhatsAPINet
For Viber .NET API:
Couldn't found one for .NET or any other platform.