How to send bulk sms on whatsapp

Question

I want to send bulk SMS on WhatsApp without creating broadcast list.

For that reason, I found pywhatsapp package in python but it requires WhatsApp client registration through yowsup-cli.

So I've run yowsup-cli registration -r sms -C 00 -p 000000000000 which resulted in the error below:

INFO:yowsup.common.http.warequest:{"status":"fail","reason":"old_version"}

status: fail reason: old_version

What did I do wrong and how can I resolve this?

Answer 1

The error you get clearly points out the nature of the challenge you are facing: it has to do with your version of yowsup-cli; it's an old version.

It means that your project requires a version of yowsup-cli higher than what you currently have so as to work effectively as require.

What you need to do so as to resolve it is: to update your yowsup-cli application to a more recent version.

Answer 2

The problem is with the http headers that are sent to whatsapp servers, these are found in env/env.py The name of headers are manually provided, therefore due to new updates whatsapp servers only serve or authenticate to updated devices which is identified with their http/https/etc headers, in this case you need to update some constants in the above file(env/env.py) in your yowsup folder.