[DinakarS]

Main problem with this is the visitor may abandon the form at the WhatsApp submission stage. You can collect responses (as fallback) and then send them to the WhatsApp page. It's better than directly sending them to WhatsApp page.

This way your customers won't won't lose any meaningful information (they can maybe access it from your dashboard).

[shyjal]

Sending each response from our side via official api is expensive and most small businesses can't afford it if we start charging per lead.

Main advantages of the current solution is that its dead cheap and businesses get message from customer's genuine WhatsApp number. Followups can be done easily. I think advantages outweigh the disadvantages for at least some businesses.

Having said that we are planning to add a fallback system like email notification and viewing responses in our dashboard.