Event Invitation - Calendar App

[bvp]

Mail invitation, when using shared calendars, has been disabled years ago, if I’m informed correctly. I’ve read that this violates the CalDAV standard.

But I’m surprised that internal invitation mails work for you. It does not work for me.

I’m also looking for a workaround for this since 8 months:

Calendar app: Sending invitation mails when you are not the owner of the calendar

If I read correctly, it is not possible to send invitation mails to attendees when I use a shared calendar, i.e. when it’s not my calendar. Is there any workaround / plugin for this? Because this is a real important feature for us. We use about 7 calendars with about 16 employees of a company. Of course only one of them created (and shared) these calendars, but everyone needs to create events and invite people. The funny thing is that when I cancel an event, the mail is sent! Why not when crea…

EDIT: Creating events in shared calender doesn't trigger email has the answer to this question (but not a solution, which I’m still searching for).