This is an interesting use case.
What you could do in the past was to send a message inside of XWiki, so you could imagine sending a message to the admin group for example. This was https://extensions.xwiki.org/xwiki/bin/view/Extension/Message%20Stream%20Application/
This extension used to be bundled in XWiki, but it’s now an extension you can install. I don’t remember why we unbundled it, but it’s a sign that something was not working as well as we wanted. Would that solve your need?
In the same direction, there’s the following extension that could maybe be used as workaround:
https://extensions.xwiki.org/xwiki/bin/view/Extension/Discussions%20Application/ However I’ve never tried it and I don’t know how it works (cc @surli ).
I think your use case is valid and it would be interesting to create a jira issue for it, do you think you could do that and explain your detailed requirements on how you’d see this working?
Thx!