Outlook Express
This page will explain how to export data from Outlook Express in CSV format.
1) Select [File] > [Export] > [Address Book...] from menu.

2) Select "Text File (Comma Separated Values)" and then click "Export".

3) Click "Browse" to select a file from your computer where you would like to save the exported file and then click "Next".

4) Check the fields you wish to export and then click "Finish".

5) You will get the message as shown below. Click "OK".
