Dear colleague, we use this one now: https://www.alamos-gmbh.com/service/apager-pro/
The whole Landkreis (county?) is supposed to use it. Best part is that it also shows me the way to the fire station should i have forgotten how to get there.

@all: You guys are great. I now have a separate email account, with situation set up so that when i´m not within reach of a known wifi the ambient changes and thus the sound when i get an email. Emails are constantly retrieved for the alarm mail account and only manually for the normal one. I think i can live with that for the time being.

I'll probably try to retrieve the alarm message via kdeconnect with a linux computer later to gain a few seconds and to be able to forward the message via different means.

One last question though: the Situations app lets me execute random commands it seems. Does anyone have any idea how to put this possibility to use?