# whatsapp

- [WhatsApp Business app vs API: which do I need?](/explained/whatsapp/whatsapp-business-app-vs-api-which-do-i-need)
- [Why can a WhatsApp Business Account or number stop sending?](/explained/whatsapp/why-can-a-whatsapp-business-account-or-number-stop-sending)
- [Why was my WhatsApp template rejected?](/explained/whatsapp/why-was-my-whatsapp-template-rejected)