WhatsApp Card & Flows Support in Conversations (classic)

Conversations (classic) now supports the whatsapp/card and whatsapp/flows content types, letting you send WhatsApp Card templates and WhatsApp Flow templates directly through the Conversations API. Cards let you pair a message with tappable action buttons and optional media, while Flows let you launch an interactive, multi-step WhatsApp Flow from a single templated message — both previously only available via Programmable Messaging. Build these content types with the Content Template Builder and reference them by SID when sending a message in a Conversation.