Import / export contacts to WebMail is performed in the section "Contacts»:
When importing contacts from a CSV file, keep in mind that the data must be separated by commas and the correct column header names must be present in the first line. WebMail successfully imports CSV files generated by email clients like Thunderbird or Outlook... If the file does not have the correct headers, the data is not imported.
To export all contacts, click on the triangle next to the "Export"And select"Export all", Or on the button itself:
To export some contacts: