Sending an invite to a viber group by phone number using PHP, is it possible?

Question

PHP

Good afternoon.
In Viber, if you search by phone number, you can find a person if he is in Viber and if he is not familiar to you. And send him a message.
Essentially spam.
Here is the question. The client calls, we talk on the phone with him and say that we will send a join link to our group to him.
How to do this with only a client number?

It's clear how to do it manually. With the help of a bot - not really, because the client did not write to the bot and the bot does not know its ID. In fact, after the call, we only have the client's phone number, and, well, his name.

Maybe there is some way using the API or SOMETHING or privateAPI (which uses the application on the smartphone) or some other methods.

Mailing list services and the purchase of a business account from the Viber itself - do not offer (:

Let me know if anyone knows about this.

Answer 1

Try to use a service like this https://developer.nexmo.com/messages/overview
Here is an example (of another php service) https://github.com/superjobru/devino-viber
Here is a seemingly free service
https://github .com/bsgworld/bsg-php/