1. Using a web browser, navigate to https://mail.zimbraservice.com and log into the desired mailbox.
2. Select the Preferences tap.
3. Select, Import/Export.
4. Within the Import Section, select Browse and navigate to the .CSV file that you would like to import. Once selected, choose the Type of contacts you are importing. We recommend either selecting Auto-Detect or Account Contacts.
5. Select Import, located on the bottom right-hand corner of the section. You will receive a notification telling you the contact file was imported successfully.