I just get alerts over telegram. They’re just regular notifications, but you could probably set specific notification behavior and sounds for the app?

Edit: Though that’s not a selfhosted solution. Sometimes it’s a decision between reliability and selfhosted. e.g., I went back to Tailscale from Headscale when I lost connectivity through Headscale and couldn’t figure out how to get it back.

Thank you for posting this! I’ve been increasing the memory for my VM over and over and it was using 24GB RAM + 4GB swap. Hopefully this will let me reclaim some.

If you click the source linked, you can read through all the details.