A new version of Parla 🗣️ is out! Addressing a bunch of quality of life bugs that mobile and macos users were facing, i’m also welcoming the very first code contributor! Check the release notes here. #deltachat #gnome https://github.com/trufae/parla/releases/tag/0.10.8

Calling all chatmail, Delta Chat and webxdc hackers and communities! FOSDEM happens in Brussels end January 2027, and together with our friends from XMPP and Matrix we are co-organizing a "Decentralized Messaging Devroom". There also will be a stand and stickers, and then starting monday "Delta Community day(s)". See the full announcement and also a channel you can subscribe to for fosdem related news.

https://delta.chat/en/2026-11-11-fosdem27-and-community-days

#deltachat #chatmail #webxdc

#Telegram is re-inventing #webxdc mini-apps, but poorly: its new HTML widget, attached to a message, only talks to a bot registered with Telegram's centralized, non-encrypting infra. https://core.telegram.org/bots/api-changelog#november-9-2026

With #deltachat anyone can add mini-apps ("zip" files really) to a message, permission-free, no bot rquired, and the "app message" talks peer-to-peer with chat members, end-to-end encrypted and with realtime messaging using @n0iroh Rust library under the hood.

https://webxdc.org

Il y a une nouvelle version de #DeltaChat.
En dehors des améliorations pour l'utilisateur (comme les messages épinglés) la grande nouveauté c'est que désormais le relai nine.testrun.org n'est plus le relai par défaut. L'application choisit un relai, le plus rapide pour vous. Et encore plus fort: En tâche de fond, il vous ajoute ensuite 2 relais automatiquement.
C'est excellent pour la décentralisation.
https://delta.chat/en/2026-11-07-pin-messages-and-multi-relay-onboarding

¿Es Signal la mejor opción de aplicación de chat? Existen propuestas más descentralizadas, hoy les quiero hablar de Delta Chat.
Muchas gracias @marcelcosta por todos los datos y wena info
#chat #messageapp #deltachat

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Banner de color rosa oscuro con un Jake el perro de adventure time yassificado que dice: Delta chat una mejor opción de chat online

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Un banner con un comparativo entre Delta chat, Signal, Telegram y Whastapp: Como Delta chat tiene sus servidores fuera de USA, tiene apps para todas las plataformas y no está comprada por las big tech

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Banner de la princesa de Mario Bros en versión hacker de Matrix con el texto: Que diferencia Delta chat de Signal? Descentralizado, Permite a sus usuaries instalar sus propios servidores. Sin telefono, Te deja crear una cuenta sin necesidad de poner un número de teléfono. Varias cuentas, Muy importante si quieres mantener tu anonimato para ciertos grupos.

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Banner de color rosa oscuro con un Patricio de Bob esponja yassificado (El meme de pues sí mi ciela) con el texto: Que desventajas tiene Deltachat? No tiene stickers, Solo en la versión para computadoras :( esperemos esta tragedia acabe pronto. Aun no te deja etiquetar a alguien en una conversación. Puedes enviar mensajes de audio, texto, imagenes etc y hacer grupos... pero igual es todo lo que necesitas. Aunque están mejorando muy rápido

Han publicado una entrada en Delta Chat con todas las novedades de los últimos meses. Estoy realmente impresionado con el trabajo de esta aplicación/protocolo.
Pinned messages, Liquid Glass, resilient decentralized onboarding and security-hardening efforts
https://delta.chat/en/2026-11-07-pin-messages-and-multi-relay-onboarding

#DeltaChat

Our blog was quiet for over half a year, but we're back, and you get three blog posts for the price of one: pinned messages, Liquid Glass on iOS, in-app updates for the Android APK, decentralized onboarding across community relays, and a first look at what's coming next, including the end of unencrypted email, and the reasoning behind it.

https://delta.chat/en/2026-11-07-pin-messages-and-multi-relay-onboarding

#deltachat #chatmail #webxdc

#XSF Announcement

Call for Papers for the Decentralised Messaging devroom at #FOSDEM2027!
https://xmpp.org/2026/10/fosdem-2027-decentralised-messaging-devroom/

Deadline: Nov 20, 2026

#xmpp #jabber #matrix #deltachat #chat #interoperability #SelfHosting #rtc #opensource #decentralization #federation #messaging #xep #devroom

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The XSF Announcement Banner with the XMPP logo surrounded by a house with a megaphone next to it.

...e xa que estamos, un novo repetidor de #deltachat

https://bcn.fedi.cat/notice/BBo3royE3FbQYblwhM

1. instala https://delta.chat
2. abre no navegador do móbil https://xat.autogestio.cat/
3. preme no botón vermello «crear un perfil»
4. saúda(nós) 👋

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un código que erre que ao escanealo coa aplicación deltachat ou arcanechat entras na sala de conversa fediverso.galego onde hai máis persoas porque é unha sala pública e poderás probar que tal funciona a aplicación (funciona normal, como explicalo?) e se callar podes ver se son útiles as aplicacións que inclúen as conversas, o xeito de engadir adhesivos (!) e incluso convidar a outras persoas que non coñecen deltachat a que INSTALEN a aplicación e a utilicen para conversar contigo. O normal.

A partir de ahora, España está soportada por los avisos meteorológicos vía Delta Chat.

Progresivamente, la biografía de cada ciudad mostrará el enlace para suscribirse al bot correspondiente, para recibir los avisos directamente en Delta Chat.

🇪🇸 FediMeteo Spain is now also available on Delta Chat.

Spain is now supported by weather alerts via Delta Chat.

Gradually, the bio of each city account will show the link to subscribe to the corresponding bot, so you can receive alerts directly in Delta Chat.

#FediMeteo #España #Spain #DeltaChat #Weather #Meteo #Fediverse #FediMeteoUpdates #FediMeteoAnnouncements

We hereby challenge _all_ other messaging apps, FOSS or not, to provide a more convenient private onboarding experience than #deltachat

1. Install app
2. "Create new profile"
3. Enter nick name, tap "Agree and continue"
4. Tap "+" and "new contact" and provide/scan qr code/link

Voila! A secure private chat, familiar to those coming from Whatsapp or Telegram (without "AI", with #a11y).

Note: chat identities are private and can not be queried or discovered. Servers keep no track or metadata

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Start screen of https;//get.delta.chat apps which shows Delta chat logo (Greek letter delta) Secure decentralized chat "Create new profile" button highlighted

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Create profile screen With a field to enter a name ... "Fediverse chicken" was typed A link to the privacy policy of nine.testrun.org, the default onboarding chatmail relay A highlighted button "agree and continue" A button "use other server"

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Screenshot of newly created profile Title bar "fediverse chicken" Two chats in the chat list: "Device messages" with instructions how to setup contact with another chat profile "Saved messages" where you can "save" messages from other chats to memorize them

We'd like to remind everyone that a self-hosted #chatmail relay is best shared in some wider than family circles. In crisis situations everbody does better when helping others.

A typical 1gb RAM chatmail relay VPS for 5-10 eur per month supports 50k+ daily users.

chatmail VPSes are stateless. You can wipe all disk state, reinstall and chatting will resume. Conversely, #deltachat does not keep or depend on any server state .Operators under pressure do not need to feel bad to hand over data.

La idea de pasarse a XMPP ya como que me remata, porque todo el trabajo de pasar a tu entorno recae en el que lidera la propuesta y para eso hay que tener entusiasmo y fuerza.

Tuve una época en la que estuve usando #deltachat con el correo electrónico y si hay que hacer esfuerzos en promocionar sistemas (en mi opinión) es en el correo electrónico. Mecanismo que empezamos a perder porque todo el mundo tiene uno, todo el mundo lo necesita, pero nadie quiere pelear por el suyo. Igual que con el fediverso.

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

https://newsletter.squishy.computer/p/cryptography-scales-trust

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screenshot of key excerpt from the referenced post: "When the network is built on cryptographic protocols, we don’t have to trust anything in-between. We don’t have to trust the computers, the wires, the institutions, beliefs, or kinship of the network participants. We can trust the math. All we have to do is verify the message with cryptography. This is a powerful primitive for scaling trust, because it means everyone on the network can cooperate together, even if they don’t trust each-other. The costs to producing high-trust results are greatly reduced, and we can spend our coordination efforts on building larger, more fine-grained, more complex networks of cooperation."

Public service announcement:

1. If you want to link your #Fediverse profile to a chat account please consider just saying "DM me for #deltachat invite link" and NOT PUBLISH it to "all".

2. If you do publish invite links to groups and so on, please consider doing it with a dedicated delta chat profile that is not your private profile. Multi-Profile for the win.

3. We want to evolve the #securejoin invite link UX to better prevent unsafe practises. Involves tons of considerations. 💜

With our #deltachat #chatmail and #webxdc efforts we put all intelligence on the end devices, and architecutally separate it from a transport layer that routes safely and fast but knows nothing.

There are a dozen or more #chatmail servers across many jurisdictions, all safely interopable with each other and classic servers.

Turned out we can dumb down email servers by relying on cryptography instead of IP reputation and ai/spam filtering. And have 200ms delivery times. We are not done :)

Did you know that #deltachat does not need and does not use key servers? Most other messengers (wa/signal/matrix/threema/...) actually operate or incorporate a cryptographic key server, managing the cryptographic identities of all users. Delta Chat uses decentralized protocols for key management avoiding a central storage of identities. The SecureJoin protocol is the key (sic!) innovation and was independently analyzed by ETH Zürich researchers earlier this year .... https://delta.chat/en/2024-03-25-crypto-analysis-securejoin

How many people do you know that have lost their messaging history on Whatsapp or Signal, photos etc during mobile phone transitions or breakage or through other shenenigans?

With #deltachat you can:

- export "everything" to a file and import it on any of the many different devices

- or just setup a second device through a QR code scan -- which was happily discovered here after an accidental factory reset https://libranet.de/display/0b6b25a8-2066-0695-ca24-081964494389