Parse .ICS (icalendar) files

[MutedJam]

This might also be useful for another feature request (seeing CalDAV uses the iCalendar format too):

CALDAV calendar options

I do not have or want Google Calendar, I use a self-hosted email system with a calendar built-in. How do I trigger if an event starts or ends or something like that? Is there not something that could access my CALDAV or any workaround for this? While I am at it, I also need something when I enter a contact into my address book. How would I do that?