If there's anything that drives Mac users into a frenzy, it's those winmail.dat files that can show up in Apple Mail when they receive email from colleagues or friends using Microsoft Outlook. Winmail.dat files can either files that are attached to the message, or they can contain information such as embedded documents, meeting requests, address card info, notes, or forwarded messages sent as attachments. Regardless of the content, they're just plain annoying on the Mac.
restoroot, a Mac development firm out of Millstatt, Austria, has the solution for you. Letter Opener 3 (€19.99 or €9.99 upgrade for version 2.0 owners) is an Apple Mail plugin that can ease winmail.dat frustrations. Letter Opener has been recently updated for compatibility with Mac OS X 10.6 Snow Leopard, and it can:
Convert Outlook schedules, appointments, and tasks to iCal
Convert Outlook contacts to Address Book
Open nested messages in winmail.dat files
Translate notes from Outlook
Let you read delivery status and read receipt messages
Especially for Mac users who are the "lone rangers" in a Windows environment, Letter Opener 3 can make life a little bit smoother. It's great to see that this plugin has been made compatible with Snow Leopard.