@AWildBeard looks like tox is dead. imho riot.im/matrix synapse is the way to go. signal is still centralized. riot/matrix is federated as it should be. havn‘t startet tox since ages. if you need p2p via tor, tox is unbeaten.
And there are also many servers that give you accounts without any email (e.g. jabber.de). If the server allows it, that registration can happen seamlessly within the client like Conversations as well.
I wanted to try Riot/Matrix before actually, but I haven't fully understood it yet. Maybe I didn't spend enough time on it. Btw, do you have a good resource on that?
The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!