Baat blogNotes on selling and supporting customers over WhatsApp.https://baat.aiWhatsApp Business app or the API — which do you need?https://baat.ai/blog/whatsapp-business-app-vs-apihttps://baat.ai/blog/whatsapp-business-app-vs-apiThe free app is enough for a lot of businesses. Here is where it stops, what the API gives you instead, and what happens to your existing number if you move.Tue, 18 Aug 2026 00:00:00 GMTWhat counts as opt-in on WhatsApphttps://baat.ai/blog/whatsapp-opt-in-ruleshttps://baat.ai/blog/whatsapp-opt-in-rulesMeta requires opt-in before you message anyone on WhatsApp. Here is what a valid opt-in must say, where you can collect it, and what it costs you to get this wrong.Tue, 18 Aug 2026 00:00:00 GMTWhatsApp now charges per message, not per conversationhttps://baat.ai/blog/whatsapp-pricing-per-messagehttps://baat.ai/blog/whatsapp-pricing-per-messageMeta retired conversation-based billing on 1 July 2025. Here is what you actually pay for now, what is still free, and the three things that change your bill.Tue, 18 Aug 2026 00:00:00 GMTWhy WhatsApp rejected your message templatehttps://baat.ai/blog/whatsapp-template-rejectedhttps://baat.ai/blog/whatsapp-template-rejectedTemplate rejections usually come down to a handful of causes, and most are formatting rather than policy. Here is the full list, and how to fix and resubmit.Tue, 18 Aug 2026 00:00:00 GMT