WhatsApp does not have a API available for public use. As you put it, it’s a closed system. However, they provide several other ways in which your iPhone application can interact with WhatsApp: through custom

The WhatsApp Business API is launching to let businesses respond to messages from users for free for up to 24 hours, but will charge them a fixed rate by country per message sent after that.

In addition to the WhatsApp conversation charge, customers will continue to incur the Twilio flat fee of $0.005 per message. Your first 1,000 conversations each month won’t incur any WhatsApp fee (Twilio per-message costs still

The WhatsApp Business API is a powerful, GDPR-compliant solution that works for businesses of all sizes and industries. With Userlike, you can get access to the API for just $90 per month – without any