I use outlook at my work for email and its not uncommon to send screenshots and similar. A common workflow for me is to hit print screen paste into the message

I use outlook at my work for email and its not uncommon to send screenshots and similar. A common workflow for me is to hit print screen paste into the message compose window, crop the image and super impose annotations onto it using the office drawing tools (circle, arrows, text box etc). I also like the integration with Communicator and calendar, Having notification about when people are online in meetings and which building they are in (my work has multiple sites) is handy. I don't usually like Microsoft products but Outlook is pretty solid in my opinion. The only alternative I've really seen is Lotus Notes.