From Horde
- Navigate to your addresses.
- Click Import/Export.
- Select vCard as the export format and select the address book to export.
- Click Export and make a note of where you have saved the export file.
To Zimbra
- Click the Preferences tab.
- Click Import/export.
- Import > File and then click Browse.
- Choose the export file that you saved on your computer.
- Click Import.