I don't think these things are as important as you think.

RSVP for example. Nobody read or cares who and what people reply. In the last 4 companies I worked for (including one in Switzerland), nobody cared if I accepted or confirmed my attendance to the meeting and would try to call me/force me into a meeting even when my status showed I was on another shsring my screen. And nobody seems to respond nowadays nor check calendars for availability and avoiding conflicts.