“I think the spirit makes a lot of sense. But of course Signal can’t interoperate with another messaging platform, without them raising their privacy bar significantly,” even ones like WhatsApp that support end-to-end encryption and already partly utilize the protocol. “Because we don’t just encrypt the contents of messages using the Signal protocol. We encrypt metadata, we encrypt your profile name, your profile photo, who’s in your contact list, who you talk to, when you talk to them. That would need to be the level of privacy and security agreed across the board with anyone we interoperated with before we could consent to interoperate.”

-Meredith Whittaker (Signal President)

https://techcrunch.com/2024/03/04/signals-meredith-whittaker-scorns-anti-encryption-efforts-as-parochial-magical-thinking/

So no interoperability in the near future for Signal.

There's some confusion because of the reference to "Signal protocol". This refers to the key exchange and encryption protocol originally developed for Signal and adopted by WhatsApp, iMessage, and others.

This is a means of establishing a secure end-to-end encrypted conversation, not a federated protocol for different messaging networks to interoperate. WhatsApp announced that Signal protocol or a compatible E2EE implementation is one of their requirements to allow third parties to interoperate.

Signal has signaled its intent not to interoperate with WhatsApp or anything else several times over the years for both technical and security reasons.

birdychat and haiket, wtf are those

i was wondering the same thing.. im in the eu and recently updated whatsapp and it says you can chat using different "third party apps" i saw that there are just 2 available atm , but are in beta or something and ask you for the email...

It was promised that it will never happen. Don't know why you thought unrealistic thingd

I recently saw an app that has one-to-one chat interoperability. As far as I remember the EU law has a transition phase where first there has to be a way for one-to-one chats and later for group chats. But the group chat deadline is still not reached

Who ever promised that? Just because both use Axolotl/Double Ratchet? hat is far from enough. Not to mention that neither Meta nor Signal Messaging have any economic incentive to do it...