Whatsapp Official API

But only if we do it via the official WhatsApp Business API platform. Through WhatsApp API you can send bulk WhatsApp messages to unlimited saved and unsaved contacts, leverage cloud-based team inbox, send promotional messages, schedule broadcasts, implement WhatsApp chatbots, track real-time campaign and team performance analytics, drive sales and marketing, and much more.

Sending bulk WhatsApp messages via any unofficial tool is illegal as it violates WhatsApp’s terms. So, keep it straight and use the official WhatsApp API to stay cool and compliant.