Meta announced earlier today that it social network WhatsApp is preparing to make one of its biggest changes ever, the messaging giant is rolling out third party chat integration across Europe, meaning users will soon be able to send messages to people on other apps like Telegram, Signal, or any other messaging service directly from WhatsApp. This isn’t some voluntary feature update. It’s happening because European regulators demanded it.
The European Union’s Digital Markets Act is forcing the change, marking a historic shift in how messaging apps operate. For years, WhatsApp, iMessage, Telegram, Signal, BirdyChat, Haiket and other platforms have existed as walled gardens. If you wanted to message someone on Telegram, you needed Telegram installed. If they only used WhatsApp, you needed WhatsApp too. Your phone ended up cluttered with multiple messaging apps, each with its own contacts, chats, and features. The DMA is tearing down those walls, at least in Europe as this marks a significant milestone in Meta’s compliance with the EU’s Digital Markets Act (DMA) interoperability requirements, in a statement made by Meta.
Starting in the coming months, WhatsApp users across the European Union will see a new option in their settings. They can choose to receive messages from users on other messaging platforms, all within the WhatsApp interface. Someone on Signal could message your WhatsApp number, and the conversation would appear in your WhatsApp inbox alongside your regular chats. Meta has confirmed the feature is coming and has been working on the technical infrastructure to make it happen without compromising security.
This changes the competitive dynamics of messaging apps. Right now, WhatsApp dominates because everyone is already on it, creating a network effect that makes it nearly impossible for competitors to gain traction. Why switch to a new app when all your friends and family are on WhatsApp? But with this new feature, users can choose different apps based on privacy, or design rather than where their contacts are. If you prefer Signal’s privacy features or Telegram’s channels, you can use those apps while still reaching people on WhatsApp.
Meta has been fighting this requirement for months, arguing that opening up WhatsApp to third party messages creates security and privacy risks. The company built its reputation on end-to-end encryption, ensuring that only you and the person you’re messaging can read your conversations. Meta claims that allowing messages from other platforms could weaken that encryption, especially if those platforms use different security standards or protocols. European regulators aren’t buying it, insisting that Meta can figure out how to maintain security while still allowing interoperability.
The solution WhatsApp is implementing involves a new messaging protocol that other apps will need to adopt if they want to connect. Meta is essentially creating a bridge that maintains encryption while allowing cross-platform communication. Other messaging services will need to meet certain security standards and implement compatible encryption before they can plug into WhatsApp. It’s not automatic. Telegram, Signal, and others will need to build their side of the bridge and agree to Meta’s requirements.
This only applies in Europe for now. Users in the United States, Asia, and other regions won’t get third party chat integration unless their governments pass similar laws. This creates a strange situation where WhatsApp works differently depending on where you live. European users get the open, connected version while everyone else remains in the walled garden. That split could get messy, especially for people who message contacts across borders.
For competitors, this is both an opportunity and a challenge. On one hand, they finally have a way to reach WhatsApp’s massive user base without convincing people to abandon the app entirely. A smaller messaging service could offer unique features or better privacy and still let users message their WhatsApp contacts. On the other hand, building and maintaining the integration takes resources, and there’s no guarantee users will even enable the feature. Many people might stick with WhatsApp exclusively, never turning on third party messages.
WhatsApp plans to roll out the integration gradually, starting with one-on-one text messages before expanding to group chats, voice calls, and video calls over the next few years. The DMA gives Meta specific deadlines to implement each feature, with penalties for missing those targets. European regulators are watching closely to make sure Meta complies fully rather than dragging its feet or implementing a half-baked version.
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