Signal is the world’s most widely used truly private messaging app, and our cryptographic technologies provide extra layers of privacy beyond the Signal app itself. Since launching in 2013, the Signal Protocol—our end-to-end encryption technology—has become the de facto standard for private commu...
I love XMPP, but I can’t recommend it as a reliable alternative to Signal. I find that encrypted communication is hit or miss with it. I had a problem just this week with it. I got a message delivered to a dormant Movim account I use, and I received it in my mobile xmpp app, Cheogram. I received it fine, I replied once fine. I went to send another message and it failed. I went to Movim in my browser, logged in to my account and was able to send. This is pretty typical in my experience-- some kind of mismatch or failure to negotiate between clients.
Sorry to hear. I’ve been using omemo (e2ee) without a single message lost since… perhaps 5 years ? I also don’t use movim (I don’t trust its model and level of stability/maturity, especially with regards to doing e2ee in the browser). I would not recommend “XMPP via Movim” either.
Edit: a word
I don’t really use Movim either. I set up an account some years ago while testing different federated social networks. However, I have had that same type of issue with more ‘normal’ xmpp chats. It seems to me that the development is a bit too fragmented. I am hoping for continued improvements though :)