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Here's how WhatsApp and Messenger will become interoperable in the EU

Both messaging apps will play nice with other apps using the Signal protocol to follow DMA rules.

Last month, Meta mentioned that WhatsApp was preparing to include optional third-party chat support in line with the DMA requirements, which kicked in on March 6. However, Meta might consider exceptions down the line, suggesting that third-party developers can use a different protocol, provided they can demonstrate their methods effectively secure message content. Although interoperability across WhatsApp and Messenger brings about a broader scope for digital messaging, Meta hasn't revealed any intentions to extend this capability to users outside the EU.

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