This has been brought up before once and on the apple discussion forums. I wanted to get some feed back from others here who have this problem as well. It appears that when creating a new even in ical under my iCloud account, or through iCloud online, any caldav invites sent out to any user that does not have a .me address will not be received. I called apple support on this and the answer I got was (and I'm not joking) that this is how they made it and it's not broke. Has anyone here been able to successfully send out a caldav invite from iCloud to gmail or any other users?