1) there are bridges ("matterdelta") which provide interop with Matrix, XMPP, Telegrram, ssh and anything that Matterbridge provides. It doesn't preserve end-to-end encryption and so bridging bot choice is tricky.
2) There are growing efforts around 3rd party #chatmail clients https://chatmail.at/clients. Interoperability is "free" between all chatmail clients (#deltachat being the prominent one). Unlike #Signal we welcome third parties to the party :)
I use DeltaChat on my tablet and ArcaneChat on my phone. Other than branding, is there any real difference between them?
@ratcatcher @crazy_pony in terms of core functionality there is no difference between ArcaneChat and Delta Chat -- both are chatmail clients using the same core library which performs all networking/encryption/contact/group/chat/realtime-setup etc.
ArcaneChat is maybe a bit more of an experiments-pushing client, and some of its features made it back to mainline, and arcanechat is continously rebasing on mainline, in turn.
