Some clients use contact groups to send e-mail correspondences. While you have to enable this feature in Outlook on Mac OS X, it is a pretty straightforward process.
Step-by-step Guide
Mac OS X
Step 1: Open the contacts pane by clicking the icon at the bottom right of the Outlook Window that looks like two people.
Notice that the "New Contact Group" button is grayed out.
Step 2: Make the "New Contact Group" button clickable.
As the image above indicates, the "New Contact Group" button is grayed out initially.
In the Apple Toolbar, click "Outlook" then "Preferences".
Select the "General" icon under "Personal Settings".
Step 3:
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