Finally, no more excuses for using Outlook
Alright. I’m going to put this simply.
If you don’t use LDAP (which includes Active Directory), then screw Outlook. Give them a little more time and even that won’t matter.
What am I talking about? One of the best mail clients around, plus an incredible add-on for it. Get that rolling and you have a nice mail client with a fancy calendar. You can “invite attendees” which allows people to add your event to their calendar, plus send you a return message with their status. There’s even a checkbox to support some versions of Outlook, though I have no idea how well that works.
So, there, now stop paying hundreds of dollars on crusty software and donate to some open source projects.