Meta Platforms Inc. is enhancing WhatsApp to allow communication with users on other messaging platforms, responding to the European Union’s Digital Markets Act (DMA) mandating interoperability. The initiative, which began in early 2024, is currently in beta testing in Europe and utilizes the Signal Protocol for secure communications. Third-party apps can submit integration requests to Meta, which will conduct security reviews before allowing message exchanges. The beta version currently supports only basic text messaging with BirdyChat. Users can manage their third-party inboxes and block unwanted services, with a focus on security measures like client-side scanning. Meta plans to expand interoperability features, including group chats by 2025 and calling features by 2027. While the current rollout is limited to Europe, it may influence global standards for messaging interoperability.