Does Basecamp Classic integrate with Microsoft Outlook?
Basecamp Classic’s iCalendar feed for Milestones works with Microsoft Outlook 2007 and Outlook 2010 for Windows (but not previous versions, so make sure you’re using Outlook 2007+). The iCal feed can be found at the bottom of the Dashboard Overview. It’ll look like this:
Each project will also have it’s own iCal feed at the bottom of the project’s Calendar tab.
When you click on the link, it will automatically add it to your Outlook Calendar.
Outlook has not added support for iCal feeds in Outlook for Mac at this time.