I am a lover of open source, so I really enjoyed using Mozilla Thunderbird and Calendar until we started using Exchange Server in our office and I stopped receiving mail from my CEO and our VCs. Everyone else was fine, mysteriously. So, I had to plug in to the Exchange Server and figured it was a good time to switch to M$ Outlook so I could also start sending an receiving calendar events.
Trouble is, you can’t export Thunderbird mail messages directly to Outlook. The help docs and various menus and screens create the appearance of a possibility, but after some investigation I realized this was all a ruse.