Yahoo! Address Book
This page will explain how to export data from Yahoo! Address Book in CSV format.
1) Click "Contacts" in Yahoo Mail.

2) Click "Import/Export".

3) Scroll down to "Export" section and select "Export Now" for Microsoft Outlook.

4) Click "Save".

5) Select the folder and file in which you would like to save and click "Save".

6) When finished, you will see the window as shown below.
