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