[CalendarServer-users] calendar user address

[Mark Cockfield]

The norm seems to be to use an email address, how do people handle the case
where a calendar user's email address changes? It seems to me that every
calendar object in the repository where the user is an organizer or an
attendee would have to be updated. If I understand the specs correctly you
could use a urn scheme except that iMIP requires a mailto.

Regards,

Mark