this post was submitted on 08 Nov 2025
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https://delta.chat/

https://delta.chat/en/help#e2ee

I gave it another try last week

It's still in development, it's not a fully fledged replacement for Matrix yet, but I could see it replace Signal at some point.

For a list of servers: https://chatmail.at/relays

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[–] unexposedhazard@discuss.tchncs.de 8 points 1 month ago* (last edited 1 month ago) (2 children)

I used it years ago and it worked quite well even back then. If you just need a messenger then its not bad at all imo. I dont know how it scales when running a server for 10000+ users (every message is a new email so the load is probably a lot higher than for a normal email server), but its probably fine.

The main reason why i dont use it over matrix is the very mature VOIP stack that Element/Matrix is using. I basically completely replaced classic phone calling and other video conferencing stuff with matrix.

[–] Blaze@piefed.zip 4 points 1 month ago (1 children)

I just noticed reading their forum that they plan to include calls support in the next release https://support.delta.chat/t/help-testing-upcoming-delta-chat-release-with-calls/4220

1:1 calls are pretty straightforward to implement with webrtc. Nice to see they are doing it.

[–] Blaze@piefed.zip 2 points 1 month ago (1 children)

Interesting, I don't use Matrix for voice call, maybe I should give it a try

[–] unexposedhazard@discuss.tchncs.de 4 points 1 month ago* (last edited 1 month ago) (1 children)

So far only Element Web/Desktop and ElementX have implemented the current gen call system. It also needs to be supported server side so it only works if you are on a homeserver that has set up element-call. (Many have at this point, but far from all)
In Element X its the only available call system, in the desktop version you need to click on the video/camera icon and select "Element Call" to use it.

If you just wanna try it out standalone (the client just embeds this same UI) you can do so here. https://call.element.io/

This systems is super smart and can distribute the load across multiple homeservers when you have large calls with like 100+ participants.

[–] Blaze@piefed.zip 2 points 1 month ago (1 children)
[–] unexposedhazard@discuss.tchncs.de 2 points 1 month ago* (last edited 1 month ago)

If you wanna see if a server supports it just put in your servers URL into this handy matrix server tester.
If the server has something related to "livekit" in the .well-known section then its most likely supported.

https://federationtester.mtrnord.blog/?serverName=matrix.org#server-wellknown