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 #fosdem #xmpp #matrix

#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

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

Okay, that was it! Enjoy your "Login with Delta Chat" now working via https://login.forum.delta.chat instead of login.support.delta.chat 🎉

(2 days of effort and that's all the visible improvement to users... being a sysadmin is unrewarding sometimes^^ but yay!)

another (hopefully last) downtime for the forum's "login with Delta Chat" function...

maintenance over for now :)

maintenance finished successfully.

Our last blog post is from spring, and many new features released since then ... we are just too busy working on new features, and maximizing chat resilienence in the face of broken single servers. There are btw minimum 600 #chatmail relays world-wide. How do we know? We are going to tell you when this kind of counting does not work anymore, in a few weeks :)

WE DO NOT (WANT OR NEED TO) KNOW WHO USES DELTA CHAT AND RUNS CHATMAIL RELAYS, but occasional encouraging feedback is welcome :)

#deltachat is made to be a reliable and resilient messenger for private groups, friends and family.

If you want to use it for joining or creating "public groups", please do yourself a favor, and create a dedicated "public profile" by tapping "create profile" and then use it to join public invite links like here on the fediverse, or on websites etc

Public groups with anonymous un-trusted or trolling members can cause problems. Worst case, you can then drop the public chat profile.

Who ever is in the vicinity of Hannover in lower sachsony this coming Friday, is invited to consider joining one of our long-term contributors for an afternoon session on "the new and old internet" in the Auditorium at https://liminale.digital/
Likely in german language.
Nice stickers will be available :)

#deltachat is now evolving for 9 years. Among the currently active 15-20 contributors a majority joined 5+ years ago, with some joining in the very first year and a few only joining last year.

Patience and perseverance is underrated when it comes to producing something that challenges the status quo of centralized mainstream messaging. Several competitors dropped out by now while many of us feel we are only getting started.

A good read on the patience topic:

https://www.joanwestenberg.com/p/your-edge-is-patience-not-genius?publication_id=7670699&post_id=215589276&isFreemail=true&r=rq5xj&triedRedirect=true

Happy birthday to the CCC 🎉 45 year birthday 🎉 We are happy and grateful to be part of the chaos crowd and especially thank all the volunteers and organizers who made and make everything possible over the decades, truly outstanding and a beacon of rare "normality" in these ever more crazy turning times ....

See you all around Congress end of the year, ahead of which we are preparing some new releases, aiming to close the gap with signal further, with unprecedented decentralization 🖤

We're flattered! @digitalcourage, one of the oldest digital rights organizations in Germany, just recommended using #deltachat

They included a fantastic, well-structured article in German on how to get started, with lots of good background info for those who seek it. https://digitalcourage.de/digitale-selbstverteidigung/messenger

next #deltachat #ios version is coming with #liquidglass 🥛 thanks Amzd for the work. though frustrating being forced by #bigtech to do things that may not be loved and feel superfluous, it's wanted by many meanwhile.

there are still some things to tweak, we created an issue at https://github.com/deltachat/deltachat-ios/issues/3157 . on-point help is welcome - and already ongoing thanks to some new contributors ❤️

Congratulations and shout out to our long-term collaborators from the @n0iroh project for releasing Iroh V1!

A major ugprade of the probably best Peer-to-Peer Rust networking library today:

https://www.iroh.computer/blog/v1

In case you missed it: When running apps like https://webxdc.org/#amzd-radio-station chat members joins in a realtime and private Peer-to-Peer network using Iroh, and can listen to music together. The media streams travel via gossipping Peer-to-Peer connections, a bit BitTorrent style.

Telegram is an extreme security risk for its users, its developers and operators, holding data and metadata for over a billion people on central servers!

Our decentralized zero-metadata messaging approach is diametrically opposed to such big-platform designs https://delta.chat/en/2026-03-31-zero

But there is more: #chatmail relays are zero-state: you can wipe the relay's disks, create a new fresh setup, and users just continue chatting. Operators have actually done this. An *actually* state-less server :)

RE: https://mastodon.bsd.cafe/@stefano/116702145454686241

The world-wide #chatmail relay network is growing in various wonderful ways. #freebsd joined the world-wide federated secure communication party and BSD cafe offers a public relay at https://chatmail.bsd.cafe :) Thanks @stefano @feld and @outofcreativity !

Reminder: There are no accounts in the classic sense anywhere with #chatmail or #deltachat.

It's all private profiles on end user devices which co-ordinate in a #p2p fashion. Chat profiles *use* email (relay) addresses for transporting messages through a federated e2ee-restricted SMTP network.

A chat profile or chat group has zero data on the server. It's radically different from classic email servers, Whatsapp, Signal, XMPP and Matrix servers which host and control chat identity.

It's hard these days to find a unifying description, or know about all the people and communities involved in #deltachat #chatmail #webxdc developments. One shared sentiment probably is wanting to develop anti-authoritarian technologies and cultures around it, and being opposed to authoritarian tech policy moves in the West, chat control, age verification, prescribing Google/Apple control, enforcing digital app use etc

It's also a reason we are only posting on the fediverse bridged to bsky.

A note on "#deltachat is going proprietary with #chatmail relays":

1) It's all based on IETF standards, with configuration and custom integration code fully FOSS and documented at: https://chatmail.at/doc/relay/ with hundreds of permission-free deployments.

2) We know of several alternative relay implementations and deployments

3) Own servers or big email providers can be used (YMMV)

However it's fair to criticize our relentless focus on E2EE, and our moving away from email addresses as identity.