#deltachat PSAs regarding the last 24 hours:

1) If you messaged someone about 20-30 hours ago, and did not get an expected response/receipt better "resend" (long-tap or right-click the message to resend). Unfortunately, not all queued messages at the crashing nine.testrun.org server made it to the new one.

2) 2.33+ app releases are rolling out, supporting using "multiple relays" so that failing relays (like happened above) will not cause lost messages anymore. See https://support.delta.chat/t/how-to-migrate-your-profile-to-another-relay-version-2-33/

Relax 😎! GPG is not OpenPGP!

Yesterday, vulnerabilities were published https://gpg.fail but they don't affect #deltachat or other #chatmail clients because

A) We never used #gnupg for anything; we use the modern #rustlang #openpgp implementation @rpgp@mastodon.social, security audited multiple times.

B) #openpgp is fine, as modernized in #RFC9580, which already warns against several #gpgfail issues (gpg didn't implement that spec)

Please spread the word that #gpg is not #openpgp ... Thanks! #39c3

it is never too late to #GoSovereign 🌱

#OwnYourData #decentralization #privacy #DeltaChat #ArcaneChat #digitalindependence #sovereign

#XMPP groups are centralized depending on a single server, if server dies the group is gone, server stores group metadata

#Matrix servers store a lot of group metadata across servers

with #DeltaChat the server stores ZERO group metadata/state you don't depend on any server and can easily migrate your profile keeping group state and history in your devices

if Delta Chat had "super groups" with admin/moderation for public rooms, would you switch?

https://support.delta.chat/t/spec-proposal-super-groups/4644

#PleaseBoost #boost

I am here once again asking you to switch to #decentralized solutions, the answer is never centralization

if you are going to leave #WhatsApp switch to #ArcaneChat, #DeltaChat, #XMPP, #Matrix, etc.

#Signal #SignalAppp #digitalindependence #digitalautonomy

It took a while but it's shaping up nicely :) Post-Quantum Cryptography and Reliable Deletion, better known as Forward Secrecy, are going to become available in 2026 in #deltachat. For more details, including the recent #fosdem26 talk recording:

https://autocrypt2.org

@delta@chaos.social a friend of mine made this.

#DeltaChat

I hear a lot about Matrix being a truly decentralized protocol. But if you register with an instance and it goes down, all users under that instance go down with it. It happened a couple of months ago @ matrix.com and everybody knows it.

Differently, Delta Chat allows users to register same account on different relays so if the main goes down, users can just switch relay and keep chatting.

That makes Delta Chat one step ahead. Prove me wrong.

#matrix #deltachat #messagingapp @delta@chaos.social

End-to-End Encryption is good but metadata protection counts as much. Names, group descriptions and memberships, avatars, who talks to whom ...

Both #deltachat and #signal go to great length to protect all the metadata that WhatsApp grants itself gratuitously. #Matrix stores similar scales of metadata on their servers, even if you can choose which server stores it.

Everything is better than #Telegram which additionally stores message contents in all group chats/channels and most 1:1 chats.

After three intense months of work from more than a dozen contributors, #deltachat 2.48 releases are rolling. Maybe the most feature-packed releases ever?

- "zero metadata" messaging

- native Audio/Video calls on Android and iOS, as well as UbuntuTouch

- Group and Channel descriptions

- A new background audio player

- Revamped Download-on-Demand

and, last but not least, the long-awaited next-generation of messaging resiliency through "multi-path" routing ....

https://delta.chat/en/2026-03-31-zero

This morning nine.testrun.org was briefly unavailable, some network problem. A good time to remind everyone to add a second relay to your #deltachat app:

1. Go to https://chatmail.at/relays randomly choose one of the listed relay pages and copy the invitation code to your clipboard

2. In delta chat settings go to advanced/relays and tap "add relay" and paste the invitation code

3. That's it.

If one relay is unavailable you still can receive and send messages.

https://delta.chat/en/2026-03-31-zero#maximizing-availability-and-resilience-through-multi-path-delivery

Making sure that deleted messages are actually deleted and unrecoverable is more involved than most folks think. The FBI could recently recover deleted Signal messages from an iOS phone because the notifications you see on your phone were stored in an extra database. Apple has now fixed this, also making #deltachat iOS users safer. Few know that so called "forward secrecy" is all about deleted messages becoming unrecoverable, see https://autocrypt2.org for our plans

https://www.heise.de/en/news/FBI-extraction-of-deleted-Signal-messages-Apple-secures-iPhones-better-11269038.html