Base tech resilience comes from tools that can be used offline. #deltachat apps are offline-first in that you can create chats, send messages, look at messages/media and trigger establishung contact via qr code scans. And you can use #webxdc apps (with checklist, calendars, editors, shopping lists etc) because they not only don't require Internet but are barred from accessing it, providing privacy that doesn't require #gdpr or consent or login.
@ati1 Re: #DeltaChat on #Librem5. I just tested the experimental direct 1:1 calls and it worked great : ) The call ring sounded loud and clear on my Librem 5!
We are aware of roskomnadzor just having ramped up their blocking efforts in #russia against #deltachat 's default onboarding chatmail relay. Signal, Whatsapp are degraded/blocked for a longer time already.
1) Delta Chat has first class shadow-socks proxy support (try ss:// links you can find ... Delta has management-proxy UX)
2) many other chatmail relays work fine and inter-chatmail/email server traffic continues unimpeded
3) if you can help with analyzing please drop into our DMs.
La gente de #DeltaChat vuelven a impresionar 🤯 ahora con llamadas P2P (**en beta**)... Donde los servidores no necesitan hacer NADA especial, ni siquiera actualizarse. Todo sigue funcionando bajo estándares de #email. 😍
Hay algo mágico en una aplicación que consigue ser tan independiente incluso de su propia infraestructura. 🪄
Believe it or not: #deltachat is growing audio/video calls starting with the currently rolling 2.22 releases ... A few people already had two hour long stable calls :)
Calls are an experimental option while we continue to work on reliability, UX/UI revisions, and configuration of TURN servers on #chatmail relays and in clients.
We want calls to reliably work across all major platforms, networks and phones, including #UbuntuTouch
Всем привет! Возможно ли сделать звонок, если использовать только классические сервера электронной почты? Мои попытки позвонить закончились неудачно - сам вызов проходит, но ни звука, ни видео.
Chatmail provides FOSS infrastructure for interoperable, secure, speedy and reliable end-to-end encrypted messaging. Check out clients as Arcane Chat, Bots or Delta Chat today!
I've been on the hunt for some accessible, easily self-hosted (on prem or datacenter) chat solution for a while now, and I've been looking very closely at deltachat/chatmail.
Not gonna lie, the fact that just uses mature SMTP facilities for transport is making me weirdly aroused.
If anyone has experience running their own chatmail server or just using deltachat in general, I'd be glad to hear from you.
There is no single central #Signal server. Signal uses #AWS cloud, plus Google Cloud, Microsoft Cloud and Cloudflare, all under US legislation. If any of these clouds goes down or becomes otherwise problematic, chatting degrades or fails.
Chatmail provides FOSS infrastructure for interoperable, secure, speedy and reliable end-to-end encrypted messaging. Check out clients as Arcane Chat, Bots or Delta Chat today!
With @signalapp having a problem because AWS us-east-1 is having trouble, I'm looking at installing @delta as a side-channel for situations like this ... does anyone know if it does video?
I know it's a chat function, and I'm not asking for miracles. It's a genuine question about capabilities.
I see there are web apps, and capabilities to integrate things, so I'm wondering what's available in the base install.
Upcoming Delta Chat release will come with experimental integrated (ringing!) calls feature! 📞🎶 Help us test the new feature: here is Delta Chat 2.22.0 - choose your flavor and mind your backups: 🍋 https://download.delta.
While #chatcontrol poses an existential threat to the Freiburg merlinux GmbH and distributing #deltachat apps from within the EU to all stores worldwide, it would resist any chatcontrol legislation up to the German constitutional and EuGH courts.
If the EU based company would need to fold in a few years, there would likely be forks distributed outside the EU that will *seamlessly* continue to function. Our architecture and FOSS licensing makes sure of it. See also chaos.social/@delta/1134177407…
We consider our efforts aligned: #deltachat #chatmail and #webxdc implement "right to exit" on all levels of our decentralized messaging project.
- deploy your own servers permission free and interoperable with all e-mail servers ("federation mast") - all apps and libraries and server components are 100% Foss - interactive chat-shared web-apps can be used in other messengers
Здраствуйте,мне кажется они всегда хотели больше контроля,и хорошо что есть #opensource приложение,я не могу пожертвовать по личным причинам, но я занимаюсь продвижением #deltachat и возможно ещё буду #mastodon трекеров всё больше и больше,в одной простой игре может быть 30+ трекера...😔
It's an excellent read, with lots of good advise, including having a public "hello" profile and another unpublished chat profile for private chatting. #deltachat apps have pervasive multi-profile support (and multi-device support) so it's pretty easy to establish such a two-profile setup.
#deltachat is being used in virtually all world regions where one or more other messengers fail to work. We recently released a major milestone (V2 security hardening releases) that prepared the ground for chat profiles to have multiple #chatmail relays at once ... failure or blocking of a single relay would not disrupt chatting anymore. But multi transport also helps with the "centralization problem in decentralized systems" ... delta.chat/en/2025-06-04-surge… (Funding is looking good currently btw!)
Beginning June we witnessed a sudden surge of Delta Chat usage especially in the US and Cuba. We don’t know the social dynamics behind it but it probably helps that Delta Chat apps resiliently work...
We do not aim for #deltachat to be another social media app. No #ai summaries or suggestions. No public directory of contacts. No discovery via outside identifiers (mobile phone or email). Just you and your contacts privately messaging, in a solid simple user interface on all platforms. End-to-End encryption enforced on two layers. #chatmail relays know and retain nothing, no content or metadata. #webxdc apps allow for custom interactions on top of chats.
V2 #deltachat is rolling out after weeks of internal testing, a major milestone revising how end-to-end encryption works and bringing more beautiful contact and group profiles, direct access to chat-shared apps in the title bar and a "new email" action with setting a subject for those using a classic server.
Best of all, users and developers don't need to co-ordinate anything for upgrading to V2 despite the massive security rework behind the scenes :)
With Delta Chat Version 2, chats are end-to-end encrypted, always and by default. Previously it was possible that chats without green checkmarks could contain messages without end-to-end encryption...
Want to help us testing the upcoming Delta Chat 2.6.0 release for Android? Choose your flavor and mind your backups: 🍋 https://download.delta.chat/android/beta/deltachat-gplay-release-2.6.0.
For refining #deltachat UIs and UX we are looking at many other messengers regularly. But we are curious. Which messenger UX/UI do you like most and suggest we take cues from?
Hey folks. I've noticed #DeltaChat hasn't got a page in #Wikipedia. Do you know sources which would prove its notability so we could create a page for it?
Boosts appreciated. If you don't know sources, someone else might.
Two of our teams just gave talks at the @passthesaltcon 2025 conference in Lille:
@Xeniax tells the story of "federated messaging" waves and her usable security research, emphasizing "availability" as a key issue passthesalt.ubicast.tv/videos/… --
@hpk starts off with prioritizing usable security and walks through #chatmail transport layer security goals and #deltachat end-point security status, upcoming releases and prospective work on improving metadata and other goals passthesalt.ubicast.tv/videos/…
With the current massive user migration from X and Meta to decentralized social media such as Mastodon, the interest in federated communication infrastructures is gaining traction.
Everyone returns to email in the end. We are there already. #whatsapp wants you to add your email to secure your account ... despite all the nay sayers and numerous well funded attempts and claims to kill #email not even WA can do it. #deltachat #chatmail and #webxdc are about deep collab between people, projects and operators to evolve email from within. It is not just about SMTP and IMAP and MIME and OpenPGP which are all exchangeable and can be improved ... Which we set out to do. Cheers.
#deltachat is secure against server-side group membership changes but for a very different reason than #signal which keeps encrypted group membership data in a central store.
Delta Chat has _no_ central store but implements a rigidly tested #p2p group membership model where servers play no role github.com/chatmail/models/tre…
Both signal and delta chat are safe against recently published attacks against #whatsapp that can add members to chats, breaking end to end encryption. arstechnica.com/security/2025/…
@Winter blue tardis🇧🇬🇭🇺 @Jayson Smith @Nick Giannak III If you are still testing deltachat, I managed to run my #chatmail relay and it's working for a few weeks for me. I have created a groupchat where I'd like to invite other screen reader users. As I have posted a few times recently, #deltachat people do really care about screen reader #a11y so while testing and something is not working the way you would expect lets describe it in details, and report it properly.
Comparing #XMPP against #email protocols is too limited. What sets #deltachat apart is *vertical integration* and being driven by UI/UX considerations. Cross-platform Apps and Bots use the Rust core library which connects with #chatmail relays and classic email servers based on a higher level API -- abstracting over SMTP, MIME, #OpenPGP etc. See chatmail.at
#webxdc apps in turn use an even higher level stable API abstracting over email/xmpp/... see webxdc.org/docs/
Chatmail provides FOSS infrastructure for interoperable, secure, speedy and reliable end-to-end encrypted messaging. Check out clients as Arcane Chat, Bots or Delta Chat today!
our friends over at @rpgp just published a monster milestone, humbly tagged 0.16 😍 with
- streaming decryption and encryption
- post-quantum-cryptography
- API streamlining.
#rPGP is a full Rust implementation of #openpgp which counts among the fastest and most compliant implementations today, and includes security audits. Note: #deltachat uses a restricted subset of OpenPGP, and follows best practices (eg using the same ed25519 keys implementation as #signal) github.com/rpgp/rpgp/
#deltachat Desktop can now run on #Firefox and Safari, entirely avoiding #Electron and Chromium! It's an intended side-effect of the "porting Desktop to #Tauri" effort led by @treefit which aims to provide a non-Electron packaged version of the Desktop. Here is a video and deep dive into what's working on regular browsers now, and what's missing for a full Web version: delta.chat/en/2025-05-22-brows…
As part of the project to port Delta Chat Desktop from Electron to Tauri1, we’ll showcase a setup where our Desktop app runs in Firefox and does not depend on Electron or Chromium anymore. This vid...
1 cent per five years .... is the current marginal hosting cost for a #chatmail address, with which #deltachat apps facilitate world-wide private messaging including interactive #webxdc apps that run end-to-end encrypted in any chat group.
<1 Million EUR per year is the estimated marginal hosting costs for 350 Million EU citizens. Such scaling requires, however, research and development, including careful UX and #cryptography work. Related writing from @gordon
Emoji reaction UI/UX has been reworked
