Calendar sharing invite message
It would be nice to have a place to write a note when sharing a calendar just like sharing within OneDrive. Currently there is only a subject line field. Sometime people want me (as the admin) to share a calendar with someone but they may not know about it. I would like to place some explanation with the invite.
Calendar sharing between Google and Office 365, more carriers for Text messaging (USCellular).
Add attendees to shared calendar events