Postbox Address Book


Postbox has a built-in Address Book which allows you to easily access and manage your contacts. In addition, it has the ability to integrate with the Mac Contacts App as well as LDAP servers.

To open the Postbox Address book, click the toolbar button, or go to Tools > Address Book (Windows) or Window > Address Book (macOS).

Please make sure that Postbox is authorized to use macOS Contacts by going to System Preferences > Security & Privacy > Privacy > Contacts and make sure that Postbox is selected.

Address Book Groups and Lists

When you open the Address Book for the first time, you'll see two or three groups in the sidebar:

  • Personal Address Book - Default group for Windows users.
  • macOS Contacts (Mac only) - Shows the macOS Address Book. (See also Using the macOS Contacts App.)
  • Collected Addresses - When your messages are downloaded, any address that you've sent messages to and received messages from will be added here. To turn off this feature, go to Preferences (Mac) or Options (Windows) > Composition > Addressing, and uncheck "Add outgoing email addresses..."

Lists (also known as Distribution Lists) are sub-collections of your Address Book Groups which allow you to easily and repeatedly send messages to multiple recipients. You can create lists within the Personal Address Book or Collected Addresses. Then, to populate the lists with the correct contacts, drag and drop them from the main collection to the specific list in the sidebar.

For macOS users, any changes you wish to make to Lists should be performed in the macOS Contacts app. Any changes will automatically be updated in Postbox.

Managing Contacts

Within the Address Book, you can create new contacts by clicking the New Card button in the toolbar, and fill in the information into the appropriate fields.

Alternatively, if you're viewing a message, you can add the sender to your Address Book by clicking the sender's name, and clicking add contact in the Contacts Card. If the sender is already in the Address Book, you can click edit... to make changes to the contact. 

To change how your contacts are displayed, go to View > Show Name As, and choose between "First, Last", "Last, First", or "Display Name". You can also change how they're sorted by going to the View | Sort By menu.


To build your Postbox Address Book, you can start by importing your address book databases from other clients. Postbox will accept .csf, .tab, .txt and LDAP files. Go to Tools > Import... to get started.

You can export your Postbox Address Book by using the export tool. Select the group or contact(s) that you wish to export, go to Tools > Export..., choose the export location, and decide between LDAP, Comma Separated or Tab Delimited file formats.


Note to our macOS users: The Postbox Address Book will provide you with an ability to connect to LDAP servers. However, Postbox cannot access LDAP servers setup in within the Mac Contacts App.

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