Postbox provides full read and write integration with the Mac OS X Address Book, so users can now keep all of their contacts in one location.

Address Book Integration

By default, new cards will be created in the native Mac Address Book. When reading a message from someone not in your address book, click on the Contact in the message header envelope and click add contact from the Contact Panel. This contact will be added to your Mac Address Book. Click on the contact again and click edit to open the Mac Address book and edit the card.

Contact photos added to the Mac System Address Book will appear in Postbox as well.

Prevent Postbox from Matching Local Addresses

If you use a Directory Server and don't want Postbox to suggest matches from your local address book, go to Postbox | Preferences | Composition | Addressing and uncheck "Local Address Books."

Disabling the Mac Address Book

To turn off support for the Mac System Address Book, select Address Book, from the Window menu, and then select Use Mac OS X Address Book from the File menu.

Using Contacts Mountain Lion

Within Mountain Lion, permission must be given to Postbox to use your Mac Address Book, now called "Contacts."  If you are unable to access your Mac Address Book contacts within Postbox:

• Open System Preferences / Security & Privacy
• Within the panel on the left, scroll to the Contacts application and select it.
• Within the apps panel on the right, scroll to Postbox and make sure that it is selected.