Support for WhatsApp Marketing Messages API ahead of Cloud API marketing sunset

Summary Meta has announced an upcoming sunset for sending marketing category template messages directly through the standard WhatsApp Cloud API endpoint (scheduled for October 13, 2027), consolidating all marketing message deliveries into the dedicated Marketing Messages API. Its important to implement native support/compatibility for this transition to ensure uninterrupted delivery of outbound marketing messages and campaign integrations. --- Problem / Context According to Meta's roadmap notice: • Marketing category messages delivered via the standard WhatsApp Business Cloud API will be deprecated on October 13, 2027. • Outbound marketing workflows will be required to interface with the new Marketing Messages API instead of the current messages endpoint for marketing templates. • Utility, service, and authentication messages will continue operating on the standard Cloud API as usual, but marketing payloads will require routing through the dedicat…