In common with other (Excel) spreadsheet formats, CSV files are now "viewed" through the Google Docs Viewer, which they open when the "View" link is clicked (just below the attachment filename).
If you are using Gmail as your email client, you will be able to view the CSV file as a Google Spreadsheet.
If you use Gmail, you can still access Google Docs: Simply sign up for a free account at Google Docs.- Once you have signed up for a Google Docs account, open the email and click “Save” to download the email to your computer.
- Sign into Google Docs and select “Upload File” to locate your CSV file. You should now be able to view your file as a Google Spreadsheet.