What You’ll Need

• A Contactzilla account with an existing address book
• BusyContacts installed on macOS (10.13+)

Step One: Add Contactzilla Account in BusyContacts

The first step is to add your Contactzilla address book as a synced account in BusyContacts.

1. Open BusyContacts and click the ‘BusyContacts’ menu followed by ‘Settings’.
2. Select the accounts pane and click the + button in the bottom left.
3. From the pop-up that follows choose ‘Contactzilla’.
4. You’ll now see fields for Username and Password. Keep this window open. We will return once we have generated the login details from Contactzilla.

Step Two: Get CardDAV Credentials from Contactzilla

1. Login to Contactzilla and select the address book that you wish to synchronize with Busy Contacts. (e.g. ‘Shared staff contacts’).
   Tip 💡:If you haven't yet set up an address book, our Getting Started Guide walks you through setting up your team and adding your first address book.
2. Click on ‘Device Connections’. Create a CardDAV connection for this address book with these settings:
   • Connection Type: ‘Other’
   • Assign a team member: Assign the relevant Contactzilla team member.
   • Label Sync Method: Leave as default (‘As Group VCards’)
   • Access Type: Full Read/Write (allows 2-way sync)
   • Number of Device Connections: 1 (raise if syncing with more than 1 instance)
3. Click ‘Create’.
4. Click the ‘Setup’ button on the new connection and choose ‘View Setup Details’.
5. Copy the Username and Password shown.

Step Three: Authenticate the connection in Busy Contacts

The next step is adding the CardDAV credentials you just generated into the BusyContacts setup window you left open in Step One.

1. Return to BusyContacts (still showing the add‑account dialog) and paste the Username and Password you copied from Contactzilla into the relevant fields and click OK.
2. You will now see your Contactzilla address book alongside any other accounts you have setup.
3. A 2-way sync is now setup between Contactzilla and Busy Contacts. You can select individual or multiple contacts from any other address book and drag them into your Contactzilla address book and vice versa.