How to Use Webmail: Exporting Your Webmail Address Book
ClickContacts to open your address book.
The Import/Export window is displayed.
In the Export area, do the following:
Select the category from which you want to export your address book. (Note: If you've previously added contacts to your Webmail address book but never selected a category for any of these contacts, then all those contacts should be under Unfiled, which is the default. You can also selectAll if you're not sure.)
Select the file type of the file you're exporting from the File Type drop-down menu.
Mail Client
Address Book Format
Thunderbird
.LDIF (text-only format for displaying directory content)
.CSV (Comma Separated Values; a text-only format where each field/column is separated by a comma)
Microsoft Outlook
.CSV
Mac Mail
.LDIF
.CSV
ClickExport Now when you're ready to export your address book.