The Info page has been juiced up a bit to outline the relay VPS details. I found the hardest part in setting up a low cost yet resilient relay to be which high performance DNS service to use.

Gcore DNS was chosen over Bunny DNS specifically because Gcore hosts the 2 nameservers in 2 different AS routes for internet outage fault tolerance. Bunny uses a single AS for both endpoints, so a single BGP config error could take them both out at once. SPoF

#chatmailrelay #chatmail #deltachat

To enable Audio/Video calls in DeltaChat: go to Settings -> Advanced and enable "Debug Calls". Ensure you grant Camera and Microphone access in your device settings and are running the latest app version.

Relay operators: if running a firewall, AFAIK the UDP port range is not currently static so one has to open all non-privileged UDP ports (1024-65535) for the TURN relay.

#deltachat #chatmail #chatmailrelay

We don't think any institution or state has the right to prevent families and friends from private chatting, physically or digitally. But the Cyber Authority China (CaC) seems to take offense:

- they made Apple remove #deltachat iOS for mainland china

- their great firewall appears to block some #chatmail relays

- if you ask DeepSeek directly about Delta Chat, it doesn't want to talk

It's pretty sad, really. Everybody on this planet needs, and has a human right to private communication.

I first tried Delta Chat 5–6 years ago. Back then it felt a bit complicated compared to mainstream messengers. Still, the idea was brilliant — and today it has grown into one of the most interesting privacy tools out there.

Delta Chat is a truly decentralized messenger that runs on top of regular email. No company servers, no phone number required. Just connect your existing mailbox (any provider) and chat with end-to-end encryption.

Why it stands out:

Works on any email server — extremely hard to block
Automatic E2EE between Delta Chat users
WebXDC — interactive mini-apps inside chats (games, polls, boards, etc.)
Chatmail servers for fast delivery and push notifications
Fully open source & open standard
Available on Android, iOS, Windows, macOS, Linux

Perfect for privacy-conscious people, activists, journalists, and anyone who wants communication resilience.
Yes, it has some rough edges (depends on your email provider, first contact can hit spam), but the independence it gives is worth it.
Have you tried it? What do you think?
🔗 https://delta.chat
#DeltaChat #Decentralization #Privacy #OpenSource #Fediverse #Chatmail #XMPPisDeadButEmailStillWorks

RE: https://chaos.social/@delta/116505223145222985

All of the advances in #deltachat apps and the growth of the #chatmail relay network, wouldn't be possible without public funds and private donations, an estimated 800K EUR in 2026 ❤️ money goes to ~16 FOSS contributors with no money left for president, board or director salaries 🖤

Signal uses >50 Million per year, Telegram and Whatsapp 100's Millions, and they are all not building permission-free decentralized chat infra and apps, let alone secure mini app ecosystems https://webxdc.org

We’ve been busy building and releasing but it’s high time to share some major news: @sovtechfund is investing nearly €500K into #chatmail

This 18-month commitment supports chatmail maintainers keeping the core infrastructure secure and evolving, on top of which several apps are built (but not STF funded):

#DeltaChat
@arcanechat
@deltatouch
Parla on Gnome

A huge thank you to the Sovereign Tech Fund for investing in open, secure and decentralized communication!

https://www.sovereign.tech/tech/chatmail

https://punkero.org is one of many chatmail relays, helping to provide encrypted, decentralized instant messaging for everyone. Anonymously.

If you are new to "chatmail", the concept is straightforward - take the fundamental protocols developed for email infrastructure and leverage them for use with fully end-to-end encrypted, instant private messaging.

It's super easy to get started and use, not to mention reliable, fun and open source.

#chatmailrelay #chatmail #deltachat #arcanechat

Egun hauetan #DeltaChat eta #Chatmail -i buruz irakurri ostean, Euskal Herriko udaletxeetan Fedibertsoa eta Burujabetza Teknologikoarekin amestu dut.

Bai, gure inguru eta herrietan, korporazio handietatik aldenduta.

Herrian, jendeak #DeltaChat erabiltzen zuen, bizilagunek sortutako Relay ezberdinekin, libreago izanez.

Ametsak.

Erokeria litzateke, Herri edo Amankomunitate bakoitzak bere posta zerbitzu propioa izatea?

Ametsak.