Sending bulk Whatsapp messages via API - repost

Avg Bid (USD)
Project Budget (USD)
$250 - $750

Project Description:
need to develop script to enable us to send bulk Whatsapp messages using an API such as php

need to be able to upload a text file with phone numbers and insert a message that gets sent to all number in text file Automatically.

can automatically distinguish which number is using Whatsapp

can prevent Whatsapp from stopping the registered tel number after sending a few hundred message

message delivery can support Big5, English, photo

Skills required:
PHP, Software Architecture
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